<template>
  <div class="chat-container">
    <div class="chat">
      <div class="chat-header">
        <div class="header__left">
          <slot name="header-left"></slot>
          <div
            v-if="currentThread?.title && currentThread.title !== '新的对话'"
            class="conversation-title"
          >
            {{ currentThread.title }}
          </div>
        </div>
        <div class="header__right">
          <button
            v-if="showStateEntry"
            type="button"
            class="agent-nav-btn agent-state-btn state-entry-btn"
            :class="{ active: sideActive === 'state' }"
            title="查看状态"
            @click.stop="toggleStatePanel"
          >
            <SquareCheck size="18" class="nav-btn-icon" />
            <span class="hide-text">状态</span>
          </button>
          <slot
            name="header-right"
            :side-active="sideActive"
            :has-active-thread="!!currentChatId"
            :toggle-agent-panel="toggleAgentPanel"
          ></slot>
        </div>
      </div>

      <div
        ref="chatContentContainerRef"
        class="chat-content-container"
        :class="{
          'has-file-panel': sideActive === 'file',
          'has-state-panel': sideActive === 'state'
        }"
      >
        <!-- Main Chat Area -->
        <div class="chat-main" ref="chatMainRef">
          <div class="chat-box">
            <template v-for="row in conversationRows" :key="row.key">
              <div v-if="row.type === 'conversation'" class="conv-box">
                <template
                  v-for="(displayItem, itemIndex) in row.displayItems"
                  :key="displayItem.key"
                >
                  <AgentMessageComponent
                    v-if="displayItem.type === 'message'"
                    :message="displayItem.message"
                    :is-processing="isDisplayMessageProcessing(row.conv, displayItem)"
                    :show-refs="showMsgRefs(displayItem.message)"
                    :hide-tool-calls="true"
                    :mention="mentionConfig"
                    @retry="retryMessage(displayItem.message)"
                  >
                  </AgentMessageComponent>
                  <ToolCallsGroupComponent
                    v-else
                    :tool-calls="displayItem.toolCalls"
                    :is-active="isToolGroupActive(row.conv, itemIndex, row.displayItems)"
                  />
                </template>
                <AgentArtifactsCard
                  v-if="shouldShowArtifacts(row.conv)"
                  :artifacts="currentArtifacts"
                  :thread-id="currentChatId"
                  @saved="handleArtifactSaved"
                  @open-preview="openPanelPreview"
                />
                <!-- 显示对话最后一个消息使用的模型 -->
                <RefsComponent
                  v-if="shouldShowRefs(row.conv)"
                  :message="getLastMessage(row.conv)"
                  :show-refs="['model', 'copy', 'sources']"
                  :is-latest-message="false"
                  :sources="getConversationSources(row.conv)"
                />
              </div>
              <div v-else class="chat-inline-notice">
                <span>{{ row.notice.message }}</span>
              </div>
            </template>

            <!-- 生成中的加载状态 - 增强条件支持主聊天和resume流程 -->
            <div class="generating-status" v-if="isReplyLoading && conversations.length > 0">
              <div class="generating-indicator">
                <div class="loading-dots">
                  <div></div>
                  <div></div>
                  <div></div>
                </div>
                <span class="generating-text">正在生成回复...</span>
              </div>
            </div>
          </div>
          <div class="bottom" :class="{ 'start-screen': !conversations.length }">
            <!-- 人工审批弹窗 - 放在输入框上方 -->
            <HumanApprovalModal
              :visible="approvalState.showModal"
              :questions="approvalState.questions"
              @submit="handleQuestionSubmit"
              @cancel="handleQuestionCancel"
            />

            <div class="message-input-wrapper">
              <!-- 加载状态：加载消息 -->
              <div v-if="isLoadingMessages" class="chat-loading">
                <div class="loading-spinner"></div>
                <span>正在加载消息...</span>
              </div>

              <!-- 打招呼区域 - 在输入框上方 -->
              <div v-if="!conversations.length" class="chat-greeting-input">
                <h1>{{ randomGreeting }}</h1>
              </div>

              <AgentInputArea
                v-model="userInput"
                :is-loading="isProcessing"
                :disabled="!currentAgent"
                :send-button-disabled="isSendButtonDisabled"
                :mention="mentionConfig"
                :thread-id="currentChatId"
                :supports-file-upload="supportsFileUpload"
                :attachments="currentPendingThreadAttachments"
                @send="handleSendOrStop"
                @upload-attachment="handleAttachmentUpload"
                @remove-attachment="handleAttachmentRemove"
              >
                <template #actions-left-extra>
                  <slot name="input-actions-left" :has-active-thread="!!currentChatId"></slot>
                </template>
                <template #actions-right-extra>
                  <slot name="input-actions-right" :has-active-thread="!!currentChatId"></slot>
                </template>
              </AgentInputArea>

              <AttachmentTmpUploadModal
                v-model:open="attachmentUploadModalOpen"
                :thread-id="currentChatId"
                :ensure-thread="ensureAttachmentThread"
                @added="handleTmpAttachmentsAdded"
              />

              <div class="bottom-actions" v-if="conversations.length > 0">
                <p class="note">当前智能体：{{ currentThreadAgentName }}；请注意辨别内容的可靠性</p>
              </div>
            </div>
          </div>
        </div>

        <!-- Agent Panel Area -->

        <div
          class="side-panel side-panel--file"
          ref="panelWrapperRef"
          :class="{
            'is-visible': sideActive === 'file',
            'no-transition': isResizing
          }"
          :style="{
            flexBasis: sideActive === 'file' ? `${panelRatio * 100}%` : '0px'
          }"
        >
          <AgentPanel
            v-if="sideActive === 'file'"
            :agent-state="currentAgentState"
            :thread-id="currentChatId"
            :panel-ratio="panelRatio"
            :preview-tabs="agentPanelPreviewTabs"
            :active-preview-path="agentPanelActivePreviewPath"
            :view-mode="agentPanelViewMode"
            @refresh="handleAgentStateRefresh"
            @resize="handlePanelResize"
            @resizing="handleResizingChange"
            @open-preview="openPanelPreview"
            @activate-preview="activatePanelPreview"
            @close-preview-tab="closePanelPreviewTab"
            @close-preview-path="closePanelPreviewPath"
            @view-mode-change="setAgentPanelViewMode"
          />
        </div>

        <div
          class="side-panel side-panel--state"
          :class="{ 'is-visible': sideActive === 'state' }"
          :style="{
            flexBasis: sideActive === 'state' ? '340px' : '0px'
          }"
        >
          <div v-if="sideActive === 'state'" class="state-panel">
            <div class="side-panel__header state-panel-header">
              <span class="state-panel-title">状态</span>
              <div class="state-panel-header-actions">
                <span class="state-panel-summary">{{ stateSummaryLabel }}</span>
                <button
                  type="button"
                  class="state-refresh-btn"
                  title="刷新状态"
                  :disabled="isRefreshingState"
                  @click.stop="handleAgentStateRefresh()"
                >
                  <RefreshCw :size="14" :class="{ 'is-spinning': isRefreshingState }" />
                </button>
              </div>
            </div>

            <div class="state-panel-body">
              <section class="state-section">
                <div class="state-section-header">
                  <span class="state-section-title">待办</span>
                  <span v-if="totalTodoCount" class="state-section-meta">
                    {{ completedTodoCount }}/{{ totalTodoCount }} · {{ todoProgress }}%
                  </span>
                </div>
                <div v-if="currentTodos.length" class="todo-panel-list">
                  <div
                    v-for="(todo, index) in currentTodos"
                    :key="`${todo.content}-${index}`"
                    class="todo-item"
                  >
                    <div class="todo-item-icon" :class="todo.status || 'unknown'">
                      <CheckCircleOutlined v-if="todo.status === 'completed'" />
                      <SyncOutlined v-else-if="todo.status === 'in_progress'" spin />
                      <ClockCircleOutlined v-else-if="todo.status === 'pending'" />
                      <CloseCircleOutlined v-else-if="todo.status === 'cancelled'" />
                      <QuestionCircleOutlined v-else />
                    </div>
                    <div class="todo-item-body">
                      <span class="todo-item-text">{{ todo.content }}</span>
                    </div>
                  </div>
                </div>
                <div v-else class="state-section-empty">暂无待办</div>
              </section>

              <section class="state-section">
                <div class="state-section-header">
                  <span class="state-section-title">附件/文件</span>
                  <span class="state-section-meta">{{ currentStateFiles.length }}</span>
                </div>
                <div v-if="currentStateFiles.length" class="state-list">
                  <div v-for="file in currentStateFiles" :key="file.key" class="state-list-item">
                    <component
                      :is="file.icon"
                      class="state-list-item-icon"
                      :style="{ color: file.iconColor }"
                    />
                    <div class="state-list-item-body">
                      <div class="state-list-item-title">{{ file.name }}</div>
                      <div class="state-list-item-meta">{{ file.meta || file.path }}</div>
                    </div>
                  </div>
                </div>
                <div v-else class="state-section-empty">暂无附件或文件</div>
              </section>

              <section class="state-section">
                <div class="state-section-header">
                  <span class="state-section-title">产物</span>
                  <span class="state-section-meta">{{ currentArtifactFiles.length }}</span>
                </div>
                <div v-if="currentArtifactFiles.length" class="state-list">
                  <button
                    v-for="file in currentArtifactFiles"
                    :key="file.path"
                    type="button"
                    class="state-list-item state-list-item--button"
                    :title="`打开 ${file.name}`"
                    @click="openPanelPreview(file)"
                  >
                    <component
                      :is="file.icon"
                      class="state-list-item-icon"
                      :style="{ color: file.iconColor }"
                    />
                    <div class="state-list-item-body">
                      <div class="state-list-item-title">{{ file.name }}</div>
                      <div class="state-list-item-meta">{{ file.meta }}</div>
                    </div>
                  </button>
                </div>
                <div v-else class="state-section-empty">暂无产物</div>
              </section>

              <section class="state-section">
                <div class="state-section-header">
                  <span class="state-section-title">子智能体</span>
                  <span class="state-section-meta">{{ displaySubagentRuns.length }}</span>
                </div>
                <div v-if="displaySubagentRuns.length" class="state-list">
                  <div
                    v-for="(run, index) in displaySubagentRuns"
                    :key="run.id || `${run.subagent_type || 'subagent'}-${index}`"
                    class="state-list-item"
                    :class="{ 'is-clickable': run.child_thread_id }"
                    @click="run.child_thread_id && openSubagentThread(run)"
                  >
                    <img
                      v-if="getSubagentIconSrc(run)"
                      class="state-subagent-icon"
                      :src="getSubagentIconSrc(run)"
                      :alt="`${getSubagentRunName(run)}图标`"
                    />
                    <span v-else class="state-subagent-icon" aria-hidden="true"></span>
                    <div class="state-list-item-body">
                      <div class="state-list-item-title state-subagent-title">
                        <span>{{ getSubagentRunName(run) }}</span>
                        <CheckCircleOutlined
                          v-if="run.status === 'completed'"
                          class="state-subagent-status-icon state-subagent-completed-icon"
                        />
                        <CloseCircleOutlined
                          v-else-if="run.status === 'failed'"
                          class="state-subagent-status-icon state-subagent-failed-icon"
                        />
                        <SyncOutlined
                          v-else-if="run.status === 'running'"
                          spin
                          class="state-subagent-status-icon state-subagent-running-icon"
                        />
                      </div>
                      <div class="state-list-item-meta">
                        {{ run.description || getSubagentRunMeta(run) }}
                      </div>
                    </div>
                  </div>
                </div>
                <div v-else class="state-section-empty">暂无子智能体运行</div>
              </section>
            </div>
          </div>
        </div>
      </div>
    </div>

    <SubagentThreadModal
      v-model:open="subagentThreadModal.open"
      :child-thread-id="subagentThreadModal.childThreadId"
      :subagent-name="subagentThreadModal.subagentName"
    />
  </div>
</template>

<script setup>
import {
  ref,
  reactive,
  onMounted,
  watch,
  nextTick,
  computed,
  provide,
  onUnmounted,
  onActivated,
  onDeactivated
} from 'vue'
import { message } from 'ant-design-vue'
import { RefreshCw, SquareCheck } from 'lucide-vue-next'
import { getFileIcon, getFileIconColor, formatFileSize } from '@/utils/file_utils'
import { generatePixelAvatar } from '@/utils/pixelAvatar'
import {
  CheckCircleOutlined,
  ClockCircleOutlined,
  CloseCircleOutlined,
  QuestionCircleOutlined,
  SyncOutlined
} from '@ant-design/icons-vue'
import AgentInputArea from '@/components/AgentInputArea.vue'
import AgentMessageComponent from '@/components/AgentMessageComponent.vue'
import RefsComponent from '@/components/RefsComponent.vue'
import ToolCallsGroupComponent from '@/components/ToolCallsGroupComponent.vue'
import { handleChatError, handleValidationError } from '@/utils/errorHandler'
import { ScrollController } from '@/utils/scrollController'
import { AgentValidator } from '@/utils/agentValidator'
import { useAgentStore } from '@/stores/agent'
import { useChatThreadsStore } from '@/stores/chatThreads'
import { useChatUIStore } from '@/stores/chatUI'
import { useConfigStore } from '@/stores/config'
import { storeToRefs } from 'pinia'
import { MessageProcessor } from '@/utils/messageProcessor'
import { agentApi, threadApi } from '@/apis'
import HumanApprovalModal from '@/components/HumanApprovalModal.vue'
import { useApproval } from '@/composables/useApproval'
import { useAgentThreadState } from '@/composables/useAgentThreadState'
import { useAgentRunStream } from '@/composables/useAgentRunStream'
import { useAgentStreamHandler } from '@/composables/useAgentStreamHandler'
import { useStreamSmoother } from '@/composables/useStreamSmoother'
import { useAgentMentionConfig } from '@/composables/useAgentMentionConfig'
import AgentArtifactsCard from '@/components/AgentArtifactsCard.vue'
import AgentPanel from '@/components/AgentPanel.vue'
import AttachmentTmpUploadModal from '@/components/AttachmentTmpUploadModal.vue'
import SubagentThreadModal from '@/components/SubagentThreadModal.vue'
import { enrichTaskToolCalls, parseToolCallArgs } from '@/components/ToolCallingResult/toolRegistry'
import { getConversationDisplayItems } from '@/utils/messageGrouping'
import { makeChildThreadId } from '@/utils/subagentThread'

// ==================== PROPS & EMITS ====================
const props = defineProps({
  agentId: { type: String, default: '' },
  singleMode: { type: Boolean, default: true },
  sendDisabled: { type: Boolean, default: false }
})
const emit = defineEmits(['thread-change'])

// ==================== STORE MANAGEMENT ====================
const agentStore = useAgentStore()
const chatThreadsStore = useChatThreadsStore()
const chatUIStore = useChatUIStore()
const configStore = useConfigStore()
const { agents, selectedAgentId, agentConfig, configurableItems, availableKnowledgeBases } =
  storeToRefs(agentStore)
const { threads, currentThreadId, currentThread } = storeToRefs(chatThreadsStore)

// ==================== LOCAL CHAT & UI STATE ====================
const userInput = ref('')
const sendCooldownActive = ref(false)
let sendCooldownTimer = null
// 预设的打招呼文本
const greetingMessages = [
  '👋 您好，有什么可以帮您？',
  '👋 你好！有什么想聊的吗？',
  '👋 嘿，有什么我可以帮助你的？',
  '👋 欢迎！今天想讨论什么话题？',
  '👋 你好呀，随时为你服务！'
]

// 随机选择一个打招呼文本
const randomGreeting = greetingMessages[Math.floor(Math.random() * greetingMessages.length)]

// 业务状态（保留在组件本地）
const chatState = reactive({
  currentThreadId: null,
  // 以threadId为键的线程状态
  threadStates: {},
  // 流式期间记录 父 task 工具调用 id → 子智能体 child_thread_id（首次运行时前端无法推算该 id）
  subagentThreadByToolCall: {}
})
const recordSubagentThread = (toolCallId, childThreadId) => {
  if (!toolCallId || !childThreadId) return
  if (chatState.subagentThreadByToolCall[toolCallId] === childThreadId) return
  chatState.subagentThreadByToolCall[toolCallId] = childThreadId
}
const getSubagentThreadIdByToolCall = (toolCallId) =>
  (toolCallId && chatState.subagentThreadByToolCall[String(toolCallId)]) || ''
const setCurrentThreadId = (threadId) => {
  chatState.currentThreadId = threadId || null
  chatThreadsStore.setCurrentThreadId(threadId || null)
}
const streamSmoother = useStreamSmoother({
  getThreadState: (threadId) => chatState.threadStates[threadId] || null
})
const { getThreadState, resetOnGoingConv, stopThreadStream } = useAgentThreadState({
  chatState,
  getCurrentThreadId: () => chatState.currentThreadId,
  onStopThread: (threadId) => streamSmoother.flushThread(threadId),
  onBeforeResetThread: (threadId) => streamSmoother.resetThread(threadId),
  onBeforeCleanupThread: (threadId) => streamSmoother.resetThread(threadId)
})

// 组件级别的消息、附件与提示状态
const threadMessages = ref({})
const threadFilesMap = ref({})
const threadAttachmentsMap = ref({})
const attachmentUploadModalOpen = ref(false)
const isRefreshingState = ref(false)
const threadConfigNoticeMap = ref({})
const threadPendingConfigNoticeMap = ref({})
const threadConfigSnapshotMap = ref({})
const configNoticeSyncDepth = ref(0)
const configNoticeScrollVersion = ref(0)

// 本地 UI 状态（仅在本组件使用）
const localUIState = reactive({
  chatMainWidth: typeof window !== 'undefined' ? window.innerWidth : 0
})

// Agent Panel State
const sideActive = ref('')
const isResizing = ref(false)
const defaultPanelRatio = 0.3
const previewPanelRatio = 0.65
const minPanelRatio = 0.25
const maxPanelRatio = 0.75
const minChatMainWidth = 350
const panelRatio = ref(defaultPanelRatio) // 面板宽度比例 (0-1)
const agentPanelPreviewTabs = ref([])
const agentPanelActivePreviewPath = ref('')
const agentPanelViewMode = ref('tree')
const chatContentContainerRef = ref(null)
const panelWrapperRef = ref(null) // 直接操作 DOM
let resizeStartX = 0
let resizeStartWidth = 0
let panelContainerWidth = 0
let streamingStateRefreshTimer = null

const getPanelContainerWidth = () => {
  const container = chatContentContainerRef.value || panelWrapperRef.value?.parentElement
  return container?.clientWidth || (typeof window !== 'undefined' ? window.innerWidth : 0)
}

const getMaxPanelRatio = (containerWidth = getPanelContainerWidth()) => {
  if (!containerWidth) return maxPanelRatio
  return Math.max(
    minPanelRatio,
    Math.min(maxPanelRatio, (containerWidth - minChatMainWidth) / containerWidth)
  )
}

const clampPanelRatio = (ratio, containerWidth = getPanelContainerWidth()) => {
  return Math.max(minPanelRatio, Math.min(ratio, getMaxPanelRatio(containerWidth)))
}

const setPanelRatioForViewMode = () => {
  const hasPreview = Boolean(agentPanelActivePreviewPath.value)
  panelRatio.value = clampPanelRatio(hasPreview ? previewPanelRatio : defaultPanelRatio)
}

const showFilePanel = (mode = 'tree') => {
  sideActive.value = 'file'
  agentPanelViewMode.value =
    mode === 'preview' && agentPanelActivePreviewPath.value ? 'preview' : 'tree'
  setPanelRatioForViewMode()
}

const showFileTreePanel = () => {
  sideActive.value = 'file'
  agentPanelActivePreviewPath.value = ''
  agentPanelViewMode.value = 'tree'
  setPanelRatioForViewMode()
}

const getPanelFileName = (file) => {
  if (file?.name) return file.name
  if (file?.path) return String(file.path).split('/').pop() || String(file.path)
  return '未知文件'
}

const getArtifactMetaLabel = (path) => {
  const filename = getPanelFileName({ path })
  if (!filename.includes('.')) return '交付文件'
  const extension = filename.split('.').pop()
  return extension ? `交付文件 · ${extension.toUpperCase()}` : '交付文件'
}

const getSubagentRunName = (run) => {
  const subagentType = run?.subagent_type ? String(run.subagent_type) : ''
  return (
    run?.subagent_name || currentSubagentOptionBySlug.value.get(subagentType)?.name || '子智能体'
  )
}

const getSubagentAgent = (run) => {
  const subagentId = run?.subagent_type
  if (!subagentId) return null
  return agents.value.find((agent) => agent.id === subagentId || agent.slug === subagentId) || null
}

const getSubagentIconSrc = (run) => {
  const agent = getSubagentAgent(run)
  return agent?.icon || (run?.subagent_type ? generatePixelAvatar(run.subagent_type) : '')
}

const getSubagentRunMeta = (run) => {
  const artifacts = Array.isArray(run?.artifacts) ? run.artifacts.length : 0
  return artifacts ? `${artifacts} 个产物` : run?.id || ''
}

const normalizePanelPath = (path) => String(path || '').replace(/\/+$/, '')

const isSameOrChildPanelPath = (path, targetPath) => {
  const normalizedPath = normalizePanelPath(path)
  const normalizedTargetPath = normalizePanelPath(targetPath)
  if (!normalizedPath || !normalizedTargetPath) return false
  return (
    normalizedPath === normalizedTargetPath || normalizedPath.startsWith(`${normalizedTargetPath}/`)
  )
}

const resetAgentPanelState = () => {
  sideActive.value = ''
  panelRatio.value = defaultPanelRatio
  agentPanelPreviewTabs.value = []
  agentPanelActivePreviewPath.value = ''
  agentPanelViewMode.value = 'tree'
}

const setAgentPanelViewMode = (mode) => {
  agentPanelViewMode.value =
    mode === 'preview' && agentPanelActivePreviewPath.value ? 'preview' : 'tree'
  setPanelRatioForViewMode()
}

const activatePanelPreview = (path) => {
  if (!path) return
  agentPanelActivePreviewPath.value = path
  showFilePanel('preview')
}

const openPanelPreview = (file, keepTreeOpen = false) => {
  if (!file?.path) return

  const tab = {
    ...file,
    path: String(file.path),
    name: getPanelFileName(file)
  }
  const existingIndex = agentPanelPreviewTabs.value.findIndex((item) => item.path === tab.path)

  if (existingIndex >= 0) {
    agentPanelPreviewTabs.value = agentPanelPreviewTabs.value.map((item, index) =>
      index === existingIndex ? { ...item, ...tab } : item
    )
  } else {
    agentPanelPreviewTabs.value = [...agentPanelPreviewTabs.value, tab]
  }

  agentPanelActivePreviewPath.value = tab.path
  showFilePanel(keepTreeOpen ? 'tree' : 'preview')
}

const closePanelPreviewTab = (path) => {
  if (!path) return

  const closingIndex = agentPanelPreviewTabs.value.findIndex((item) => item.path === path)
  const nextTabs = agentPanelPreviewTabs.value.filter((item) => item.path !== path)
  agentPanelPreviewTabs.value = nextTabs

  if (agentPanelActivePreviewPath.value !== path) return

  const nextActiveTab = nextTabs[Math.min(closingIndex, nextTabs.length - 1)]
  agentPanelActivePreviewPath.value = nextActiveTab?.path || ''
  agentPanelViewMode.value = nextActiveTab ? 'preview' : 'tree'
  setPanelRatioForViewMode()
}

const closePanelPreviewPath = (targetPath) => {
  if (!targetPath) return

  const nextTabs = agentPanelPreviewTabs.value.filter(
    (item) => !isSameOrChildPanelPath(item.path, targetPath)
  )
  const shouldCloseActive = isSameOrChildPanelPath(agentPanelActivePreviewPath.value, targetPath)
  agentPanelPreviewTabs.value = nextTabs

  if (!shouldCloseActive) return

  const nextActiveTab = nextTabs[0]
  agentPanelActivePreviewPath.value = nextActiveTab?.path || ''
  agentPanelViewMode.value = nextActiveTab ? 'preview' : 'tree'
  setPanelRatioForViewMode()
}

// ==================== COMPUTED PROPERTIES ====================
const currentAgentId = computed(() => {
  if (props.singleMode) {
    return props.agentId || selectedAgentId.value || agents.value[0]?.id || ''
  }
  return selectedAgentId.value
})

const currentAgentName = computed(() => {
  const agent = currentAgent.value
  return agent ? agent.name : '智能体'
})

const currentAgent = computed(() => {
  if (!currentAgentId.value || !agents.value || !agents.value.length) return null
  return agents.value.find((a) => a.id === currentAgentId.value) || null
})
const currentChatId = computed(() => currentThreadId.value)

const currentThreadAgentName = computed(() => {
  const threadAgentId = currentThread.value?.agent_id
  if (threadAgentId && agents.value?.length) {
    const threadAgent = agents.value.find((agent) => agent.id === threadAgentId)
    if (threadAgent?.name) {
      return threadAgent.name
    }
  }
  return currentAgentName.value
})
// 检查当前智能体是否支持文件上传
const supportsFileUpload = computed(() => {
  if (!currentAgent.value) return false
  const capabilities = currentAgent.value.capabilities || []
  return capabilities.includes('file_upload')
})

const supportsFiles = computed(() => {
  if (!currentAgent.value) return false
  const capabilities = currentAgent.value.capabilities || []
  return capabilities.includes('files')
})

// AgentState 相关计算属性
const currentAgentState = computed(() => {
  return currentChatId.value ? getThreadState(currentChatId.value)?.agentState || null : null
})
const currentThreadAttachments = computed(() => {
  if (!currentChatId.value) return []
  return threadAttachmentsMap.value[currentChatId.value] || []
})
const currentPendingThreadAttachments = computed(() =>
  currentThreadAttachments.value.filter((attachment) => !attachment?.request_id)
)
const currentArtifacts = computed(() => {
  const artifacts = currentAgentState.value?.artifacts
  return Array.isArray(artifacts) ? artifacts : []
})
const currentArtifactFiles = computed(() =>
  currentArtifacts.value
    .map((path) => String(path || '').trim())
    .filter(Boolean)
    .map((path) => ({
      path,
      name: getPanelFileName({ path }),
      meta: getArtifactMetaLabel(path),
      icon: getFileIcon(path),
      iconColor: getFileIconColor(path)
    }))
)
const currentTodos = computed(() => {
  const todos = currentAgentState.value?.todos
  return Array.isArray(todos) ? todos : []
})
const currentSubagentRuns = computed(() => {
  const runs = currentAgentState.value?.subagent_runs
  return Array.isArray(runs) ? runs : []
})
const currentSubagentRunById = computed(() => {
  const runById = new Map()
  currentSubagentRuns.value.forEach((run) => {
    if (run?.id) runById.set(String(run.id), run)
  })
  return runById
})
const currentSubagentRunByThreadId = computed(() => {
  const runByThreadId = new Map()
  currentSubagentRuns.value.forEach((run) => {
    if (run?.child_thread_id) runByThreadId.set(String(run.child_thread_id), run)
  })
  return runByThreadId
})
const currentSubagentOptionBySlug = computed(() => {
  const optionBySlug = new Map()
  mentionConfig.value.subagents.forEach((subagent) => {
    if (subagent?.slug) optionBySlug.set(String(subagent.slug), subagent)
  })
  return optionBySlug
})

const subagentThreadModal = reactive({
  open: false,
  childThreadId: '',
  subagentName: ''
})
const openSubagentThread = (run) => {
  if (!run?.child_thread_id) return
  subagentThreadModal.childThreadId = String(run.child_thread_id)
  subagentThreadModal.subagentName = getSubagentRunName(run)
  subagentThreadModal.open = true
}
const currentStateFiles = computed(() => {
  const files = []
  const seenPaths = new Set()
  const pushFile = (entry, fallbackName = '文件') => {
    const path = String(entry?.path || entry?.file_path || entry?.file_name || entry?.name || '')
    if (!path || seenPaths.has(path)) return
    seenPaths.add(path)
    const name = entry?.file_name || entry?.name || getPanelFileName({ path }) || fallbackName
    const sizeLabel = formatFileSize(entry?.file_size ?? entry?.size)
    const status = entry?.status || ''
    files.push({
      key: path,
      path,
      name,
      meta: [status, sizeLabel === '-' ? '' : sizeLabel, path].filter(Boolean).join(' · '),
      icon: getFileIcon(name || path),
      iconColor: getFileIconColor(name || path)
    })
  }

  const rawFiles = currentAgentState.value?.files || {}
  if (typeof rawFiles === 'object' && !Array.isArray(rawFiles)) {
    Object.entries(rawFiles).forEach(([path, fileData]) => pushFile({ path, ...fileData }))
  }
  currentThreadAttachments.value.forEach((attachment) => pushFile(attachment, '附件'))

  return files
})
const totalTodoCount = computed(() => currentTodos.value.length)
const completedTodoCount = computed(
  () => currentTodos.value.filter((todo) => todo?.status === 'completed').length
)
const showStateEntry = computed(() => Boolean(currentChatId.value))
const todoProgress = computed(() => {
  if (!totalTodoCount.value) return 0
  return Math.round((completedTodoCount.value / totalTodoCount.value) * 100)
})
const stateSummaryLabel = computed(() => {
  const total =
    totalTodoCount.value +
    currentStateFiles.value.length +
    currentArtifactFiles.value.length +
    displaySubagentRuns.value.length
  return total ? `${total} 项` : '暂无内容'
})

const { mentionConfig } = useAgentMentionConfig({
  currentAgentState,
  currentThreadAttachments,
  configurableItems,
  agentConfig
})

const currentThreadMessages = computed(() => threadMessages.value[currentChatId.value] || [])
const currentThreadHasHistory = computed(() => currentThreadMessages.value.length > 0)
const currentThreadConfigNotice = computed(() => {
  if (!currentChatId.value) return null
  return threadConfigNoticeMap.value[currentChatId.value] || null
})

const shouldSuppressRefsForApproval = () =>
  approvalState.showModal ||
  Boolean(
    approvalState.threadId &&
    chatState.currentThreadId === approvalState.threadId &&
    isProcessing.value
  )

// 计算是否显示Refs组件的条件
const shouldShowRefs = computed(() => {
  return (conv) => {
    return getLastMessage(conv) && conv.status !== 'streaming' && !shouldSuppressRefsForApproval()
  }
})

const shouldShowArtifacts = computed(() => {
  return (conv) => {
    if (!currentArtifacts.value.length || conv.status === 'streaming') return false
    const latestConv = conversations.value[conversations.value.length - 1]
    return latestConv === conv
  }
})

// 当前线程状态的computed属性
const currentThreadState = computed(() => {
  return getThreadState(currentChatId.value)
})

const getThreadOngoingMessages = (threadId) => {
  const threadState = getThreadState(threadId)
  if (!threadState || !threadState.onGoingConv) return []

  const msgs = Object.values(threadState.onGoingConv.msgChunks)
    .map(MessageProcessor.mergeMessageChunk)
    .filter(Boolean)
  return msgs.length > 0
    ? MessageProcessor.convertToolResultToMessages(msgs).filter((msg) => msg.type !== 'tool')
    : []
}

const onGoingConvMessages = computed(() => getThreadOngoingMessages(currentChatId.value))

// 供深层 TaskTool 读取子线程实时轨迹 / 首次运行时定位 child_thread_id
provide('getThreadOngoingMessages', getThreadOngoingMessages)
provide('getSubagentThreadIdByToolCall', getSubagentThreadIdByToolCall)

// 解析父级 ongoing 里的全部 task 工具调用（按消息顺序），统一供面板与状态判定使用。
// 注意：ongoing 期间 task 的工具结果不流式（只有 message_delta/tool_call 事件），因此这里的
// hasResult 在流式阶段恒为 false，状态判定不能依赖它。
const ongoingTaskCalls = computed(() => {
  const calls = []
  onGoingConvMessages.value.forEach((message, messageIndex) => {
    if (message?.type !== 'ai' || !Array.isArray(message.tool_calls)) return
    message.tool_calls.forEach((toolCall) => {
      const name = toolCall?.name || toolCall?.function?.name
      if (name !== 'task') return
      const id = toolCall?.id ? String(toolCall.id) : ''
      if (!id) return
      const args = parseToolCallArgs(toolCall)
      calls.push({
        id,
        messageIndex,
        hasResult: Boolean(toolCall.tool_call_result || toolCall.result),
        subagentType: args.subagent_type || '',
        description: args.description || '',
        childThreadId: args.thread_id ? String(args.thread_id) : getSubagentThreadIdByToolCall(id)
      })
    })
  })
  return calls
})

// 当前活跃（真正在执行）的 task 调用 = 最后一条「含未完成 task 调用」的 AI 消息中的那些调用。
// steer 顺序进行 → 只有最后一条消息的调用在执行；并行 → 同一条消息的多个调用都在执行。
// 用消息顺序判定，不依赖异步推算的 child_thread_id，避免首次运行哈希未就绪导致的状态错乱。
const activeSubagentToolCallIds = computed(() => {
  const pending = ongoingTaskCalls.value.filter((call) => !call.hasResult)
  if (!pending.length) return new Set()
  const lastMessageIndex = pending[pending.length - 1].messageIndex
  return new Set(
    pending.filter((call) => call.messageIndex === lastMessageIndex).map((call) => call.id)
  )
})
provide('activeSubagentToolCallIds', activeSubagentToolCallIds)

// agent_state.subagent_runs 仅在 task 返回（完成态）时写入；面板的运行中条目只取「活跃」调用，
// 避免已完成的 steer 历史调用在面板里重复成额外条目。
const runningSubagentRunsFromStream = computed(() => {
  const activeIds = activeSubagentToolCallIds.value
  return ongoingTaskCalls.value
    .filter((call) => activeIds.has(call.id))
    .map((call) => {
      const option = call.subagentType
        ? currentSubagentOptionBySlug.value.get(call.subagentType)
        : null
      return {
        id: call.id,
        subagent_type: call.subagentType,
        subagent_name: option?.name || call.subagentType || '子智能体',
        description: call.description,
        child_thread_id: call.childThreadId || '',
        status: 'running'
      }
    })
})

// 与后端 merge_subagent_runs 一致：按 child_thread_id / id 合并，运行中条目覆盖同一线程的完成态，
// 保证每个子线程恒为一行并反映当前状态（含续跑/steer）。
const displaySubagentRuns = computed(() => {
  const merged = currentSubagentRuns.value.map((run) => ({ ...run }))
  const childIndex = new Map()
  const idIndex = new Map()
  merged.forEach((run, index) => {
    if (run.child_thread_id) childIndex.set(String(run.child_thread_id), index)
    if (run.id) idIndex.set(String(run.id), index)
  })
  runningSubagentRunsFromStream.value.forEach((run) => {
    let position
    if (run.child_thread_id && childIndex.has(run.child_thread_id)) {
      position = childIndex.get(run.child_thread_id)
    } else if (idIndex.has(run.id)) {
      position = idIndex.get(run.id)
    }
    if (position === undefined) {
      position = merged.length
      merged.push(run)
    } else {
      merged[position] = { ...merged[position], ...run }
    }
    if (run.child_thread_id) childIndex.set(run.child_thread_id, position)
    idIndex.set(run.id, position)
  })
  return merged
})

// 首次运行的子智能体：前端按后端同样的哈希推算 child_thread_id，缓存到映射里供面板/轨迹定位。
watch(
  onGoingConvMessages,
  (messages) => {
    const parentThreadId = currentChatId.value
    if (!parentThreadId) return
    messages.forEach((message) => {
      if (message?.type !== 'ai' || !Array.isArray(message.tool_calls)) return
      message.tool_calls.forEach((toolCall) => {
        const name = toolCall?.name || toolCall?.function?.name
        if (name !== 'task') return
        if (toolCall.tool_call_result || toolCall.result) return
        const id = toolCall?.id ? String(toolCall.id) : ''
        if (!id || chatState.subagentThreadByToolCall[id]) return
        const args = parseToolCallArgs(toolCall)
        if (args.thread_id || !args.subagent_type) return
        makeChildThreadId(parentThreadId, String(args.subagent_type), id).then((childThreadId) => {
          recordSubagentThread(id, childThreadId)
        })
      })
    })
  },
  { deep: true }
)

const historyConversations = computed(() => {
  return MessageProcessor.convertServerHistoryToMessages(currentThreadMessages.value)
})

const conversations = computed(() => {
  const historyConvs = historyConversations.value
  const mergedOngoingMessages = stripDuplicatedOngoingHumanMessage(
    historyConvs,
    onGoingConvMessages.value
  )

  // 如果有进行中的消息且线程状态显示正在流式处理，添加进行中的对话
  if (mergedOngoingMessages.length > 0) {
    const onGoingConv = {
      messages: mergedOngoingMessages,
      status: 'streaming'
    }
    return [...historyConvs, onGoingConv]
  }
  return historyConvs
})

const conversationRows = computed(() => {
  const rows = conversations.value.map((conv, index) => ({
    type: 'conversation',
    key: conv.status === 'streaming' ? 'ongoing-conversation' : `history-${index}`,
    conv,
    displayItems: getDisplayItems(conv)
  }))

  if (currentThreadConfigNotice.value) {
    const insertAfterCount = Math.max(
      0,
      Math.min(
        Number(currentThreadConfigNotice.value.insertAfterConversationCount) || 0,
        rows.length
      )
    )
    rows.splice(insertAfterCount, 0, {
      type: 'notice',
      key: currentThreadConfigNotice.value.id,
      notice: currentThreadConfigNotice.value
    })
  }

  return rows
})

const isLoadingMessages = computed(() => chatUIStore.isLoadingMessages)
const isStreaming = computed(() => {
  const threadState = currentThreadState.value
  return threadState ? threadState.isStreaming : false
})
const shouldRefreshStateWhileStreaming = computed(
  () => Boolean(currentChatId.value) && isStreaming.value && sideActive.value === 'state'
)
const isProcessing = computed(() => isStreaming.value)
const isReplyLoading = computed(() => {
  const threadState = currentThreadState.value
  return Boolean(threadState?.replyLoadingVisible)
})
const isSendButtonDisabled = computed(() => {
  return (
    sendCooldownActive.value ||
    (props.sendDisabled && !isProcessing.value) ||
    ((!userInput.value || !currentAgent.value) && !isProcessing.value)
  )
})

const startSendCooldown = () => {
  sendCooldownActive.value = true
  if (sendCooldownTimer) {
    clearTimeout(sendCooldownTimer)
  }
  sendCooldownTimer = setTimeout(() => {
    sendCooldownActive.value = false
    sendCooldownTimer = null
  }, 2000)
}

const createClientRequestId = () => {
  if (typeof crypto !== 'undefined' && typeof crypto.randomUUID === 'function') {
    return crypto.randomUUID()
  }
  return `req-${Date.now()}-${Math.random().toString(36).slice(2, 10)}`
}

const buildOptimisticHumanMessage = ({
  requestId,
  text,
  imageContent = null,
  attachments = []
}) => {
  const message = {
    id: requestId,
    role: 'user',
    type: 'human',
    content: text,
    message_type: imageContent ? 'multimodal_image' : 'text',
    extra_metadata: {
      request_id: requestId,
      attachments
    }
  }

  if (imageContent) {
    message.image_content = imageContent
  }

  return message
}

const getMessageRequestId = (message) => {
  if (!message || typeof message !== 'object') return null

  const metadataRequestId = message.extra_metadata?.request_id
  if (typeof metadataRequestId === 'string' && metadataRequestId.trim()) {
    return metadataRequestId.trim()
  }

  if (message.type === 'human' && typeof message.id === 'string' && message.id.trim()) {
    return message.id.trim()
  }

  return null
}

// 历史消息已落库时，ongoing 里仍会保留当前轮的本地 user message；
// 切回线程后按 request_id 去掉这条重复消息，只保留仍在流式更新的部分。
const stripDuplicatedOngoingHumanMessage = (historyConvs, ongoingMessages) => {
  if (!Array.isArray(historyConvs) || !historyConvs.length || !Array.isArray(ongoingMessages)) {
    return ongoingMessages
  }

  const firstOngoingMessage = ongoingMessages[0]
  if (!firstOngoingMessage || firstOngoingMessage.type !== 'human') {
    return ongoingMessages
  }

  const lastHistoryConv = historyConvs[historyConvs.length - 1]
  const historyMessages = Array.isArray(lastHistoryConv?.messages) ? lastHistoryConv.messages : []
  const lastHistoryHuman = historyMessages.find((message) => message?.type === 'human')
  if (!lastHistoryHuman) {
    return ongoingMessages
  }

  const historyRequestId = getMessageRequestId(lastHistoryHuman)
  const ongoingRequestId = getMessageRequestId(firstOngoingMessage)
  if (!historyRequestId || !ongoingRequestId || historyRequestId !== ongoingRequestId) {
    return ongoingMessages
  }

  return ongoingMessages.slice(1)
}

// 发送 runs 前先在前端插入一条用户消息，避免等待 worker 轮询后消息才出现。
const insertOptimisticHumanMessage = (
  threadState,
  { requestId, text, imageContent = null, attachments = [] }
) => {
  if (!threadState || !requestId) return
  threadState.pendingRequestId = requestId
  threadState.replyLoadingVisible = false
  threadState.onGoingConv.msgChunks[requestId] = [
    buildOptimisticHumanMessage({ requestId, text, imageContent, attachments })
  ]
}

const markAttachmentsRequestId = (threadId, attachments, requestId) => {
  if (!threadId || !attachments.length) return null
  const previousAttachments = threadAttachmentsMap.value[threadId] || []
  const fileIds = new Set(attachments.map((attachment) => attachment.file_id).filter(Boolean))
  threadAttachmentsMap.value[threadId] = previousAttachments.map((attachment) =>
    fileIds.has(attachment.file_id) ? { ...attachment, request_id: requestId } : attachment
  )
  return previousAttachments
}

const rollbackAttachments = (threadId, previousAttachments) => {
  if (!threadId || !Array.isArray(previousAttachments)) return
  threadAttachmentsMap.value[threadId] = previousAttachments
}

const CONFIG_CHANGE_NOTICE_MESSAGE =
  '在运行过程中切换或修改配置可能会影响最终效果，建议新建一个对话。'

const withConfigNoticeSync = async (task) => {
  configNoticeSyncDepth.value += 1
  try {
    return await task()
  } finally {
    configNoticeSyncDepth.value = Math.max(0, configNoticeSyncDepth.value - 1)
  }
}

const buildThreadConfigSnapshot = () => {
  return {
    agentId: currentAgentId.value || '',
    configJson: JSON.stringify(agentConfig.value || {})
  }
}

const syncThreadConfigSnapshot = (threadId, options = {}) => {
  if (!threadId) return

  const { overwrite = true } = options
  if (!overwrite && threadConfigSnapshotMap.value[threadId]) return
  if (threadPendingConfigNoticeMap.value[threadId]) return

  // 线程切换时先记录当前 UI 的配置快照，避免同步 thread 绑定配置时误报。
  threadConfigSnapshotMap.value = {
    ...threadConfigSnapshotMap.value,
    [threadId]: buildThreadConfigSnapshot()
  }
}

const upsertThreadConfigNotice = (threadId, insertAfterConversationCount) => {
  if (!threadId) return

  const existingNotice = threadConfigNoticeMap.value[threadId]
  const nextNotice = {
    id: existingNotice?.id || `config-change-notice-${threadId}`,
    message: existingNotice?.message || CONFIG_CHANGE_NOTICE_MESSAGE,
    insertAfterConversationCount
  }
  const shouldScroll =
    !existingNotice || existingNotice.insertAfterConversationCount !== insertAfterConversationCount

  threadConfigNoticeMap.value = {
    ...threadConfigNoticeMap.value,
    [threadId]: nextNotice
  }

  if (threadPendingConfigNoticeMap.value[threadId]) {
    const nextPendingNotices = { ...threadPendingConfigNoticeMap.value }
    delete nextPendingNotices[threadId]
    threadPendingConfigNoticeMap.value = nextPendingNotices
  }

  if (shouldScroll) {
    configNoticeScrollVersion.value += 1
  }
}

const queuePendingThreadConfigNotice = (threadId) => {
  if (!threadId) return
  threadPendingConfigNoticeMap.value = {
    ...threadPendingConfigNoticeMap.value,
    [threadId]: {
      id: `config-change-notice-${threadId}`,
      message: CONFIG_CHANGE_NOTICE_MESSAGE
    }
  }
}

const flushPendingThreadConfigNotice = (threadId) => {
  if (
    !threadId ||
    !currentThreadHasHistory.value ||
    !threadPendingConfigNoticeMap.value[threadId]
  ) {
    return
  }

  upsertThreadConfigNotice(threadId, conversations.value.length)
}

const maybeInsertThreadConfigNotice = () => {
  const threadId = currentChatId.value
  if (!threadId || configNoticeSyncDepth.value > 0) {
    return
  }

  const previousSnapshot = threadConfigSnapshotMap.value[threadId]
  const currentSnapshot = buildThreadConfigSnapshot()

  if (!previousSnapshot) {
    threadConfigSnapshotMap.value = {
      ...threadConfigSnapshotMap.value,
      [threadId]: currentSnapshot
    }
    return
  }

  if (
    previousSnapshot.agentId === currentSnapshot.agentId &&
    previousSnapshot.configJson === currentSnapshot.configJson
  ) {
    return
  }

  if (currentThreadHasHistory.value) {
    upsertThreadConfigNotice(threadId, conversations.value.length)
  } else if (chatUIStore.isLoadingMessages) {
    // 历史线程仍在加载时先挂起提示，避免消息返回后把变更误当成新的基线。
    queuePendingThreadConfigNotice(threadId)
  } else {
    return
  }

  threadConfigSnapshotMap.value = {
    ...threadConfigSnapshotMap.value,
    [threadId]: currentSnapshot
  }
}

// ==================== SCROLL & RESIZE HANDLING ====================
const scrollController = new ScrollController('.chat-main')
const chatMainRef = ref(null)
let chatMainResizeObserver = null
// 初始化延迟标志，避免首次挂载时 ResizeObserver 立即触发导致侧边栏意外关闭
let isResizeObserverReady = false
let resizeObserverReadyTimer = null

const armResizeObserver = () => {
  if (resizeObserverReadyTimer) {
    clearTimeout(resizeObserverReadyTimer)
  }

  isResizeObserverReady = false
  // keep-alive 切页回来时等布局稳定后再恢复宽度判断，避免隐藏态宽度污染侧边栏状态。
  resizeObserverReadyTimer = setTimeout(() => {
    isResizeObserverReady = true
  }, 50)
}

const stopChatMainResizeObserver = () => {
  if (resizeObserverReadyTimer) {
    clearTimeout(resizeObserverReadyTimer)
    resizeObserverReadyTimer = null
  }

  isResizeObserverReady = false

  if (chatMainResizeObserver) {
    chatMainResizeObserver.disconnect()
    chatMainResizeObserver = null
  }
}

const stopStreamingStateRefresh = () => {
  if (streamingStateRefreshTimer) {
    clearInterval(streamingStateRefreshTimer)
    streamingStateRefreshTimer = null
  }
}

const startStreamingStateRefresh = () => {
  stopStreamingStateRefresh()
  streamingStateRefreshTimer = setInterval(() => {
    if (!shouldRefreshStateWhileStreaming.value) return
    void handleAgentStateRefresh()
  }, 5000)
}

const startChatMainResizeObserver = () => {
  if (!window.ResizeObserver || !chatMainRef.value || chatMainResizeObserver) {
    return
  }

  localUIState.chatMainWidth = chatMainRef.value.clientWidth || window.innerWidth
  chatMainResizeObserver = new ResizeObserver((entries) => {
    // 初始化期间跳过检查，等待 layout 稳定
    if (!isResizeObserverReady) return

    for (const entry of entries) {
      const width = entry.contentRect.width
      if (!width) continue

      localUIState.chatMainWidth = width
    }
  })
  chatMainResizeObserver.observe(chatMainRef.value)
  armResizeObserver()
}

onMounted(() => {
  nextTick(() => {
    const chatMainContainer = document.querySelector('.chat-main')
    if (chatMainContainer) {
      chatMainContainer.addEventListener('scroll', scrollController.handleScroll, { passive: true })
    }

    startChatMainResizeObserver()
  })
})

onActivated(() => {
  nextTick(() => {
    startChatMainResizeObserver()
  })
})

onDeactivated(() => {
  stopChatMainResizeObserver()
  stopStreamingStateRefresh()
})

onUnmounted(() => {
  scrollController.cleanup()
  stopChatMainResizeObserver()
  stopStreamingStateRefresh()
  if (sendCooldownTimer) {
    clearTimeout(sendCooldownTimer)
    sendCooldownTimer = null
  }
  // 清理所有线程状态
  resetOnGoingConv()
})

// ==================== 线程管理方法 ====================
// 获取当前智能体的线程列表
const fetchThreads = async (agentId = null) => {
  const targetAgentId = props.singleMode ? agentId || currentAgentId.value : agentId
  if (props.singleMode && !targetAgentId) return

  await chatThreadsStore.loadThreads(targetAgentId)
}

// 创建新线程
const createThread = async (agentId, title = '新的对话') => {
  if (!agentId) return null

  try {
    const thread = await chatThreadsStore.createThread(agentId, title)
    if (thread) {
      threadMessages.value[thread.id] = []
      threadFilesMap.value[thread.id] = []
      threadAttachmentsMap.value[thread.id] = []
    }
    return thread
  } catch (error) {
    console.error('Failed to create thread:', error)
    handleChatError(error, 'create')
    throw error
  }
}

// 获取线程消息
const fetchThreadMessages = async ({ agentId, threadId, delay = 0 }) => {
  if (!threadId || !agentId) return

  // 如果指定了延迟，等待指定时间（用于确保后端数据库事务提交）
  if (delay > 0) {
    await new Promise((resolve) => setTimeout(resolve, delay))
  }

  try {
    const response = await agentApi.getAgentHistory(threadId)
    threadMessages.value[threadId] = response.history || []
  } catch (error) {
    handleChatError(error, 'load')
    throw error
  }
}

const fetchThreadFiles = async (threadId) => {
  if (!threadId) return
  try {
    const response = await threadApi.listThreadFiles(threadId, '/home/gem/user-data', false)
    const entries = Array.isArray(response?.files) ? response.files : []
    threadFilesMap.value[threadId] = entries
  } catch (error) {
    console.warn('Failed to fetch thread files:', error)
    threadFilesMap.value[threadId] = []
  }
}

const fetchThreadAttachments = async (threadId) => {
  if (!threadId) return
  try {
    const response = await threadApi.getThreadAttachments(threadId)
    threadAttachmentsMap.value[threadId] = Array.isArray(response?.attachments)
      ? response.attachments
      : []
  } catch (error) {
    console.warn('Failed to fetch thread attachments:', error)
    threadAttachmentsMap.value[threadId] = []
  }
}

const refreshThreadFilesAndAttachments = async (threadId) => {
  if (!threadId) return
  await Promise.all([fetchThreadFiles(threadId), fetchThreadAttachments(threadId)])
}

const handleArtifactSaved = async () => {
  if (!currentChatId.value) return
  await refreshThreadFilesAndAttachments(currentChatId.value)
  showFileTreePanel()
}

const fetchAgentState = async (agentId, threadId) => {
  if (!threadId) return
  try {
    const res = await agentApi.getAgentState(threadId)
    const targetState = getThreadState(threadId)
    if (!targetState) return
    targetState.agentState = res.agent_state || null
  } catch {
    // agent state is optional UI state
  }
}

const ensureActiveThread = async (title = '新的对话') => {
  if (currentChatId.value) return currentChatId.value
  try {
    const newThread = await createThread(currentAgentId.value, title || '新的对话')
    if (newThread) {
      setCurrentThreadId(newThread.id)
      return newThread.id
    }
  } catch {
    // createThread 已处理错误提示
  }
  return null
}

const handleAttachmentUpload = async () => {
  if (
    !AgentValidator.validateAgentIdWithError(
      currentAgentId.value,
      '上传附件',
      handleValidationError
    )
  )
    return

  attachmentUploadModalOpen.value = true
}

const ensureAttachmentThread = async () => {
  if (currentChatId.value) return currentChatId.value
  return await ensureActiveThread('新的对话')
}

const handleTmpAttachmentsAdded = async () => {
  const threadId = currentChatId.value
  if (!threadId) return

  await Promise.all([
    fetchAgentState(currentAgentId.value, threadId),
    refreshThreadFilesAndAttachments(threadId)
  ])
  showFileTreePanel()
}

const handleAttachmentRemove = async (attachment) => {
  const threadId = currentChatId.value
  const fileId = attachment?.file_id
  if (!threadId || !fileId) return

  const previousAttachments = threadAttachmentsMap.value[threadId] || []
  threadAttachmentsMap.value[threadId] = previousAttachments.filter(
    (item) => item.file_id !== fileId
  )

  try {
    await threadApi.deleteThreadAttachment(threadId, fileId)
    await Promise.all([
      fetchAgentState(currentAgentId.value, threadId),
      refreshThreadFilesAndAttachments(threadId)
    ])
  } catch (error) {
    threadAttachmentsMap.value[threadId] = previousAttachments
    handleChatError(error, 'delete')
  }
}

// ==================== 审批功能管理 ====================
const { approvalState, processApprovalInStream } = useApproval({
  getThreadState,
  fetchThreadMessages
})

const { handleStreamChunk } = useAgentStreamHandler({
  getThreadState,
  processApprovalInStream,
  currentAgentId,
  supportsFiles,
  streamSmoother
})
const { startRunStream, resumeActiveRunForThread, stopRunStreamSubscription } = useAgentRunStream({
  getThreadState,
  currentAgentId,
  handleStreamChunk,
  fetchThreadMessages,
  fetchAgentState,
  resetOnGoingConv,
  onScrollToBottom: () => scrollController.scrollToBottom(),
  streamSmoother
})

// ==================== CHAT ACTIONS ====================
// 获取第一个非置顶的对话
const getFirstNonPinnedChat = (chatList) => {
  if (!chatList || chatList.length === 0) return null
  return chatList.find((chat) => !chat.is_pinned) || chatList[0]
}

const selectChat = async (chatId) => {
  const targetChat = threads.value.find((chat) => chat.id === chatId) || null
  const targetAgentId = targetChat?.agent_id || currentAgentId.value
  const previousThreadId = chatState.currentThreadId

  if (!targetAgentId) {
    handleValidationError('选择对话失败：缺少智能体信息')
    return
  }

  if (!AgentValidator.validateAgentIdWithError(targetAgentId, '选择对话', handleValidationError))
    return

  // 中断之前线程的流式输出（如果存在）
  if (previousThreadId && previousThreadId !== chatId) {
    stopThreadStream(previousThreadId)
    // run 模式下仅断开 SSE 订阅，不取消后台运行任务
    stopRunStreamSubscription(previousThreadId)
  }

  if (previousThreadId !== chatId) {
    resetAgentPanelState()
  }

  try {
    await withConfigNoticeSync(async () => {
      // 先更新当前线程，确保底部智能体名称与选中项即时同步。
      setCurrentThreadId(chatId)

      if (
        !props.singleMode &&
        targetChat?.agent_id &&
        targetChat.agent_id !== currentAgentId.value
      ) {
        await agentStore.selectAgent(targetChat.agent_id)
      }

      syncThreadConfigSnapshot(chatId)
    })
  } catch (error) {
    setCurrentThreadId(previousThreadId)
    handleChatError(error, 'load')
    return
  }

  chatUIStore.isLoadingMessages = true
  try {
    await fetchThreadMessages({ agentId: targetAgentId, threadId: chatId })
  } catch (error) {
    handleChatError(error, 'load')
  } finally {
    chatUIStore.isLoadingMessages = false
  }

  await nextTick()
  scrollController.scrollToBottomStaticForce()
  // await fetchAgentState(targetAgentId, chatId)
  await handleAgentStateRefresh(chatId)
  syncThreadConfigSnapshot(chatId, { overwrite: false })
  await resumeActiveRunForThread(chatId)
}

const selectThreadFromRoute = async (threadId) => {
  if (!agentStore.isInitialized) {
    await initAll()
  }

  if (!threadId) {
    const previousThreadId = chatState.currentThreadId
    if (previousThreadId) {
      stopThreadStream(previousThreadId)
      stopRunStreamSubscription(previousThreadId)
    }
    resetAgentPanelState()
    setCurrentThreadId(null)
    return true
  }

  if (chatState.currentThreadId === threadId) {
    return true
  }

  if (!threads.value.length || !threads.value.find((thread) => thread.id === threadId)) {
    await loadChatsList()
  }

  const targetThread = threads.value.find((thread) => thread.id === threadId)
  if (!targetThread) {
    return false
  }

  await selectChat(threadId)
  return true
}

const handleSendMessage = async ({ image } = {}) => {
  const text = userInput.value.trim()
  const imageContent = image?.imageContent || null
  if (
    (!text && !image) ||
    !currentAgent.value ||
    isProcessing.value ||
    sendCooldownActive.value ||
    props.sendDisabled
  )
    return

  // 发送后进入短暂冷却，防止连续触发停止
  startSendCooldown()

  let threadId = currentChatId.value
  if (!threadId) {
    threadId = await ensureActiveThread(text)
    if (!threadId) {
      message.error('创建对话失败，请重试')
      return
    }
  }

  userInput.value = ''

  await nextTick()
  scrollController.scrollToBottom(true)

  const threadState = getThreadState(threadId)
  if (!threadState) return

  const pendingAttachments = [...currentPendingThreadAttachments.value]
  const pendingAttachmentFileIds = pendingAttachments
    .map((attachment) => attachment.file_id)
    .filter(Boolean)

  if ((threadMessages.value[threadId] || []).length === 0) {
    const autoTitle = text.replace(/\s+/g, ' ').trim().slice(0, 2000)
    if (autoTitle) {
      void (async () => {
        try {
          const generatedTitle = await agentApi.generateTitle(
            autoTitle,
            configStore.config?.fast_model
          )
          if (generatedTitle) {
            const finalTitle = generatedTitle.slice(0, 30).replace(/\s+/g, ' ').trim()
            if (finalTitle) {
              void chatThreadsStore.updateThread(threadId, finalTitle).catch(() => {})
            }
          }
        } catch (e) {
          console.error('Title generation failed:', e)
          void chatThreadsStore.updateThread(threadId, autoTitle.slice(0, 30)).catch(() => {})
        }
      })()
    }
  }

  resetOnGoingConv(threadId)
  const requestId = createClientRequestId()
  const previousAttachments = markAttachmentsRequestId(threadId, pendingAttachments, requestId)
  insertOptimisticHumanMessage(threadState, {
    requestId,
    text,
    imageContent,
    attachments: pendingAttachments.map((attachment) => ({
      ...attachment,
      request_id: requestId
    }))
  })
  threadState.isStreaming = true

  try {
    const runResp = await agentApi.createAgentRun({
      query: text,
      agent_id: currentAgentId.value,
      thread_id: threadId,
      meta: {
        request_id: requestId,
        attachment_file_ids: pendingAttachmentFileIds
      },
      image_content: imageContent
    })
    const runId = runResp?.run_id
    if (!runId) {
      throw new Error('创建 run 失败：缺少 run_id')
    }
    await startRunStream(threadId, runId, 0)
  } catch (error) {
    threadState.isStreaming = false
    threadState.replyLoadingVisible = false
    threadState.pendingRequestId = null
    rollbackAttachments(threadId, previousAttachments)
    resetOnGoingConv(threadId)
    handleChatError(error, 'send')
  }
}

// 发送或中断
const handleSendOrStop = async (payload) => {
  if (sendCooldownActive.value) {
    return
  }

  const threadId = currentChatId.value
  const threadState = getThreadState(threadId)
  if (isProcessing.value && threadState?.activeRunId) {
    try {
      await agentApi.cancelAgentRun(threadState.activeRunId)
      message.info('已发送取消请求')
    } catch (error) {
      handleChatError(error, 'stop')
    }
    return
  }
  if (props.sendDisabled) return
  await handleSendMessage(payload)
}

// ==================== 人工审批处理 ====================
const handleApprovalWithStream = async (answer) => {
  const threadId = approvalState.threadId
  if (!threadId) {
    message.error('无效的提问请求')
    approvalState.showModal = false
    return
  }

  const threadState = getThreadState(threadId)
  if (!threadState) {
    message.error('无法找到对应的对话线程')
    approvalState.showModal = false
    return
  }

  if (!approvalState.parentRunId) {
    message.error('无法找到需要恢复的运行任务')
    approvalState.showModal = false
    return
  }

  try {
    approvalState.showModal = false
    threadState.isStreaming = true
    resetOnGoingConv(threadId)
    const resumeRequestId = createClientRequestId()
    const runResp = await agentApi.createAgentRun({
      query: null,
      agent_id: currentAgentId.value,
      thread_id: threadId,
      meta: { request_id: resumeRequestId },
      resume: answer,
      parent_run_id: approvalState.parentRunId,
      resume_request_id: resumeRequestId
    })
    const runId = runResp?.run_id
    if (!runId) {
      throw new Error('创建 resume run 失败：缺少 run_id')
    }
    await startRunStream(threadId, runId, '0-0')
  } catch (error) {
    threadState.isStreaming = false
    threadState.replyLoadingVisible = false
    handleChatError(error, 'resume')
  }
}

const handleQuestionSubmit = (answer) => {
  handleApprovalWithStream(answer)
}

const handleQuestionCancel = () => {
  handleApprovalWithStream('reject')
}

const buildExportPayload = () => {
  const agentId = currentAgentId.value
  let agentDescription = ''
  if (agentId && agents.value && agents.value.length > 0) {
    const agent = agents.value.find((a) => a.id === agentId)
    agentDescription = agent ? agent.description || '' : ''
  }

  const payload = {
    chatTitle: currentThread.value?.title || '新对话',
    agentName: currentAgentName.value || currentAgent.value?.name || '智能助手',
    agentDescription: agentDescription || currentAgent.value?.description || '',
    messages: conversations.value ? JSON.parse(JSON.stringify(conversations.value)) : [],
    onGoingMessages: onGoingConvMessages.value
      ? JSON.parse(JSON.stringify(onGoingConvMessages.value))
      : []
  }

  return payload
}

defineExpose({
  getExportPayload: buildExportPayload,
  selectThreadFromRoute
})

const handleAgentStateRefresh = async (threadId = null) => {
  if (!currentAgentId.value) return
  const chatId = threadId || currentChatId.value
  if (!chatId) return
  isRefreshingState.value = true
  try {
    await Promise.all([
      fetchAgentState(currentAgentId.value, chatId),
      refreshThreadFilesAndAttachments(chatId)
    ])
  } finally {
    isRefreshingState.value = false
  }
}

const toggleStatePanel = async () => {
  const nextOpen = sideActive.value !== 'state'
  sideActive.value = nextOpen ? 'state' : ''
  if (nextOpen && currentChatId.value && !currentAgentState.value) {
    await handleAgentStateRefresh()
  }
}

const toggleAgentPanel = async () => {
  const nextOpen = sideActive.value !== 'file'

  if (!nextOpen) {
    sideActive.value = ''
    return
  }

  showFileTreePanel()
  await handleAgentStateRefresh()
}

// 处理面板宽度调整（使用比例）
// 向右拖动(deltaX > 0)让面板变窄，向左拖动(deltaX < 0)让面板变宽
const handlePanelResize = (clientX) => {
  if (!panelWrapperRef.value) return

  if (!panelContainerWidth) {
    panelContainerWidth = getPanelContainerWidth()
  }

  const deltaX = clientX - resizeStartX
  const rawWidth = resizeStartWidth - deltaX
  const minWidth = minPanelRatio * panelContainerWidth
  const maxWidth = getMaxPanelRatio(panelContainerWidth) * panelContainerWidth
  const nextWidth = Math.max(minWidth, Math.min(rawWidth, maxWidth))

  panelWrapperRef.value.style.setProperty('flex', `0 0 ${nextWidth}px`, 'important')

  if (nextWidth !== rawWidth) {
    resizeStartX = clientX
    resizeStartWidth = nextWidth
  }
}

// 拖拽状态变化时，同步最终状态到 Vue 响应式数据
const handleResizingChange = (isResizingState, clientX = 0) => {
  isResizing.value = isResizingState

  if (isResizingState && panelWrapperRef.value) {
    resizeStartX = clientX
    resizeStartWidth = panelWrapperRef.value.offsetWidth
    if (!panelContainerWidth) {
      panelContainerWidth = getPanelContainerWidth()
    }
    return
  }

  if (!isResizingState && panelWrapperRef.value && panelContainerWidth) {
    const finalWidth = panelWrapperRef.value.offsetWidth
    panelRatio.value = clampPanelRatio(finalWidth / panelContainerWidth, panelContainerWidth)
    panelWrapperRef.value.style.removeProperty('flex')
    resizeStartX = 0
    resizeStartWidth = 0
    panelContainerWidth = 0 // 重置，供下次使用
  }
}

// ==================== HELPER FUNCTIONS ====================
const getMessageToolCalls = (message) => {
  return enrichTaskToolCalls(message?.tool_calls, {
    subagentRunById: currentSubagentRunById.value,
    subagentRunByThreadId: currentSubagentRunByThreadId.value,
    subagentOptionBySlug: currentSubagentOptionBySlug.value
  })
}

const getDisplayItems = (conv) =>
  getConversationDisplayItems(conv, { enrichToolCalls: getMessageToolCalls })

const isDisplayMessageProcessing = (conv, displayItem) => {
  return (
    displayItem?.type === 'message' &&
    isReplyLoading.value &&
    conv?.status === 'streaming' &&
    displayItem.sourceIndex === conv.messages.length - 1
  )
}

const isToolGroupActive = (conv, itemIndex, displayItems) => {
  return (
    isReplyLoading.value && conv?.status === 'streaming' && itemIndex === displayItems.length - 1
  )
}

const getLastMessage = (conv) => {
  if (!conv?.messages?.length) return null
  for (let i = conv.messages.length - 1; i >= 0; i--) {
    if (conv.messages[i].type === 'ai') return conv.messages[i]
  }
  return null
}

const showMsgRefs = (msg) => {
  if (shouldSuppressRefsForApproval()) {
    return false
  }

  // 只有真正完成的消息才显示 refs
  if (msg.isLast && msg.status === 'finished') {
    return ['copy', 'sources']
  }
  return false
}

const getConversationSources = (conv) => {
  return MessageProcessor.extractSourcesFromConversation(conv, availableKnowledgeBases.value)
}

// ==================== LIFECYCLE & WATCHERS ====================
const loadChatsList = async () => {
  const agentId = props.singleMode ? currentAgentId.value : null
  if (props.singleMode && !agentId) {
    console.warn('No agent selected, cannot load chats list')
    threads.value = []
    resetAgentPanelState()
    setCurrentThreadId(null)
    threadFilesMap.value = {}
    threadAttachmentsMap.value = {}
    return
  }

  try {
    await fetchThreads(agentId)
    if (props.singleMode && currentAgentId.value !== agentId) return

    // 如果当前线程不在线程列表中，清空当前线程
    if (
      chatState.currentThreadId &&
      !threads.value.find((t) => t.id === chatState.currentThreadId)
    ) {
      setCurrentThreadId(null)
    }

    // singleMode 保持旧行为：自动选择首个可用对话
    if (props.singleMode && threads.value.length > 0 && !chatState.currentThreadId) {
      await selectChat(getFirstNonPinnedChat(threads.value).id)
    }
  } catch (error) {
    handleChatError(error, 'load')
  }
}

const initAll = async () => {
  try {
    if (!agentStore.isInitialized) {
      await agentStore.initialize()
    }
  } catch (error) {
    handleChatError(error, 'load')
  }
}

onMounted(async () => {
  await initAll()
  scrollController.enableAutoScroll()
})

watch(showStateEntry, (visible) => {
  if (!visible && sideActive.value === 'state') {
    sideActive.value = ''
  }
})

watch(
  shouldRefreshStateWhileStreaming,
  (shouldRefresh) => {
    if (shouldRefresh) {
      void handleAgentStateRefresh()
      startStreamingStateRefresh()
    } else {
      stopStreamingStateRefresh()
    }
  },
  { immediate: true }
)

watch(
  currentAgentId,
  async (newAgentId, oldAgentId) => {
    if (!props.singleMode) {
      if (oldAgentId === undefined) {
        await loadChatsList()
      }
      return
    }

    if (newAgentId !== oldAgentId) {
      // 清理当前线程状态
      setCurrentThreadId(null)
      threadMessages.value = {}
      threadFilesMap.value = {}
      threadAttachmentsMap.value = {}
      resetAgentPanelState()
      // 清理所有线程状态
      resetOnGoingConv()

      if (newAgentId) {
        await loadChatsList()
      } else {
        threads.value = []
      }
    }
  },
  { immediate: true }
)

watch(
  currentThreadMessages,
  () => {
    if (currentThreadHasHistory.value) {
      flushPendingThreadConfigNotice(currentChatId.value)
      syncThreadConfigSnapshot(currentChatId.value, { overwrite: false })
    }
  },
  { deep: false }
)

watch(currentAgentId, (newAgentId, oldAgentId) => {
  if (oldAgentId === undefined || newAgentId === oldAgentId) return
  maybeInsertThreadConfigNotice()
})

watch(
  () => JSON.stringify(agentConfig.value || {}),
  (newConfigJson, oldConfigJson) => {
    if (oldConfigJson === undefined || newConfigJson === oldConfigJson) return
    maybeInsertThreadConfigNotice()
  }
)

watch(
  conversations,
  () => {
    if (isProcessing.value) {
      scrollController.scrollToBottom()
    }
  },
  { deep: true, flush: 'post' }
)

watch(
  configNoticeScrollVersion,
  () => {
    if (!currentChatId.value) return
    scrollController.scrollToBottom(true)
  },
  { flush: 'post' }
)

watch(currentChatId, (threadId, oldThreadId) => {
  if (threadId === oldThreadId) return
  emit('thread-change', threadId || '')
})
</script>

<style lang="less" scoped>
@import '@/assets/css/main.css';
@import '@/assets/css/animations.less';

.chat-container {
  display: flex;
  width: 100%;
  height: 100%;
  position: relative;
}

.chat {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden; /* Changed from overflow-x: hidden to overflow: hidden */
  position: relative;
  box-sizing: border-box;
  transition: all 0.3s ease;

  .chat-header {
    user-select: none;
    z-index: 10;
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 8px;
    flex-shrink: 0; /* Prevent header from shrinking */

    .header__left,
    .header__right {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .switch-icon {
      color: var(--gray-500);
      transition: all 0.2s ease;
    }

    .agent-nav-btn:hover .switch-icon {
      color: var(--main-500);
    }

    .conversation-title {
      font-size: 15px;
      font-weight: 400;
      color: var(--text-primary);
      max-width: 200px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      margin-left: 8px;
    }
  }
}

.chat-content-container {
  flex: 1;
  display: flex;
  flex-direction: row;
  overflow: hidden;
  position: relative;
  width: 100%;
  contain: layout;
}

.chat-main {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  overflow-y: auto; /* Scroll is here now */
  position: relative;
  transition:
    flex-basis 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  min-width: 0; /* Prevent flex item from overflowing */

  scrollbar-width: none;
}

.side-panel {
  flex: 0 0 auto;
  overflow: hidden;
  background: var(--gray-0);
  border: 1px solid var(--gray-150);
  border-radius: 16px;
  box-shadow:
    0 16px 40px var(--shadow-1),
    0 2px 10px var(--shadow-0);
  z-index: 20;
  margin: 0 8px 8px;
  margin-left: -16px;
  min-width: 0;
  opacity: 0;
  transform: translateX(10px);
  will-change: flex-basis;
  transition:
    flex-basis 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.side-panel.is-visible {
  opacity: 1;
  transform: translateX(0);
  margin-left: 0;
}

.side-panel.no-transition {
  transition: none !important;
}

.side-panel--file {
  align-self: stretch;
  height: auto;
}

.side-panel--file.is-visible {
  min-width: 320px;
}

.side-panel--state {
  align-self: flex-start;
  height: auto;
  max-height: calc(100% - 8px);
  max-width: min(340px, calc(100vw - 24px));
  box-shadow: 0 4px 16px var(--shadow-0);
  overflow: auto;
}

.side-panel--state.is-visible {
  min-width: 300px;
}

.state-panel {
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--gray-0);
}

.chat-greeting-input {
  padding: 24px 0;
  text-align: center;

  h1 {
    font-size: 1.4rem;
    color: var(--gray-1000);
    margin: 0;
  }
}

.agent-segment-wrapper {
  width: fit-content;
  max-width: 100%;
  margin: 0 auto 18px;
  overflow-x: auto;
  scrollbar-width: none;

  &::-webkit-scrollbar {
    display: none;
  }

  :deep(.ant-segmented) {
    width: auto;
    max-width: 100%;
    white-space: nowrap;
    background: var(--gray-50);
    border: 1px solid var(--gray-150);
    border-radius: 10px;
  }

  :deep(.ant-segmented-group) {
    width: auto;
    display: inline-flex;
  }

  :deep(.ant-segmented-item) {
    flex: 0 0 auto;
    min-width: 0;
  }

  :deep(.ant-segmented-item-label) {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}

.agent-switcher-wrapper {
  display: flex;
  justify-content: center;
  margin: 0 auto 18px;
}

.agent-switcher-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  max-width: 100%;
  padding: 4px 12px;
  border: 1px solid var(--gray-150);
  border-radius: 8px;
  background: var(--gray-0);
  color: var(--gray-900);
  cursor: pointer;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease;

  &:hover {
    background: var(--gray-0);
    border-color: var(--gray-200);
  }
}

.agent-switcher-icon,
.agent-switcher-chevron {
  flex-shrink: 0;
  color: var(--gray-600);
}

.agent-switcher-text {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

:deep(.agent-switcher-menu) {
  min-width: 220px;
}

:deep(.agent-switcher-menu-item) {
  display: flex;
  align-items: center;
  gap: 8px;
}

:deep(.agent-switcher-menu-icon) {
  flex-shrink: 0;
  color: var(--gray-600);
}

:deep(.agent-switcher-menu-text) {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

:deep(.agent-switcher-menu-badge) {
  flex-shrink: 0;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--main-30);
  color: var(--main-700);
  font-size: 12px;
}

.chat-loading {
  padding: 0 50px;
  text-align: center;
  position: absolute;
  top: 20%;
  width: 100%;
  z-index: 9;
  animation: slideInUp 0.5s ease-out;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;

  span {
    color: var(--gray-700);
    font-size: 14px;
  }

  .loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-200);
    border-top-color: var(--main-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
  }
}

.chat-box {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  flex-grow: 1;
  padding: 1rem var(--page-padding);
  padding-right: 30px;
  display: flex;
  flex-direction: column;
}

.conv-box {
  display: flex;
  flex-direction: column;
}

.chat-inline-notice {
  display: flex;
  justify-content: center;
  padding: 6px 16px 12px;
  color: var(--gray-500);
  font-size: 12px;
  line-height: 1.6;
  text-align: center;
}

.bottom {
  position: sticky;
  bottom: 0;
  width: 100%;
  margin: 0 auto;
  padding: 4px 1rem 0 1rem;
  z-index: 1000;

  .message-input-wrapper {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;

    .bottom-actions {
      display: flex;
      justify-content: center;
      align-items: center;
      width: 100%;
      background: var(--gray-0);
    }

    .note {
      font-size: small;
      color: var(--gray-300);
      margin: 4px 0;
      user-select: none;
    }
  }

  &.start-screen {
    position: absolute;
    top: 45%;
    left: 50%;
    transform: translate(-50%, -50%);
    bottom: auto;
    max-width: 800px;
    width: 90%;
    background: transparent;
    padding: 0;
    border-top: none;
    z-index: 100; /* Ensure it's above other elements */
  }
}

.loading-dots {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
}

.loading-dots div {
  width: 6px;
  height: 6px;
  background: linear-gradient(135deg, var(--main-color), var(--main-700));
  border-radius: 50%;
  animation: dotPulse 1.4s infinite ease-in-out both;
}

.loading-dots div:nth-child(1) {
  animation-delay: -0.32s;
}

.loading-dots div:nth-child(2) {
  animation-delay: -0.16s;
}

.loading-dots div:nth-child(3) {
  animation-delay: 0s;
}

.generating-status {
  display: flex;
  justify-content: flex-start;
  padding: 1rem 0;
  animation: fadeInUp 0.4s ease-out;
  transition: all 0.2s;
}

.generating-indicator {
  display: flex;
  align-items: center;
  padding: 0.75rem 0rem;

  .generating-text {
    margin-left: 12px;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.025em;
    /* 恢复灰色调：深灰 -> 亮灰(高光) -> 深灰 */
    background: linear-gradient(
      90deg,
      var(--gray-700) 0%,
      var(--gray-700) 40%,
      var(--gray-300) 45%,
      var(--gray-200) 50%,
      var(--gray-300) 55%,
      var(--gray-700) 60%,
      var(--gray-700) 100%
    );
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: waveFlash 2s linear infinite;
  }
}

@keyframes waveFlash {
  0% {
    background-position: 200% center;
  }
  100% {
    background-position: -200% center;
  }
}

@media (max-width: 1024px) {
  .chat-content-container.has-file-panel .chat-main,
  .chat-content-container.has-state-panel .chat-main {
    min-width: 350px;
  }

  .side-panel--file.is-visible,
  .side-panel--state.is-visible {
    max-width: calc(100% - 350px);
  }
}

@media (max-width: 768px) {
  .chat-content-container.has-file-panel .chat-main,
  .chat-content-container.has-state-panel .chat-main {
    min-width: 0;
  }

  .side-panel--file.is-visible {
    min-width: 280px;
    max-width: 80%;
  }

  .side-panel--state.is-visible {
    min-width: 260px;
    max-width: 80%;
  }

  .agent-segment-wrapper {
    margin-bottom: 8px;

    :deep(.ant-segmented-item-label) {
      font-size: 12px;
    }
  }

  .agent-switcher-wrapper {
    margin-bottom: 8px;
  }

  .agent-switcher-btn {
    width: 100%;
    justify-content: center;
  }

  .chat-header {
    .header__left {
      .text {
        display: none;
      }
    }
  }
}

// 智能体选择器的图标对齐
.agent-segment-wrapper {
  :deep(.ant-segmented-item-label) {
    display: flex;
    align-items: center;
    gap: 6px;
  }

  :deep(.agent-option-label) {
    display: flex;
    align-items: center;
    gap: 6px;
  }

  :deep(.agent-option-icon) {
    flex-shrink: 0;
    color: var(--gray-600);
  }
}
</style>

<style lang="less">
.agent-nav-btn {
  display: flex;
  gap: 6px;
  padding: 6px 8px;
  height: 32px;
  justify-content: center;
  align-items: center;
  border-radius: 6px;
  color: var(--gray-900);
  cursor: pointer;
  width: auto;
  font-size: 15px;
  transition: background-color 0.3s;
  border: none;
  background: transparent;

  &:hover:not(.is-disabled) {
    background-color: var(--gray-100);
  }

  &.is-disabled {
    cursor: not-allowed;
    opacity: 0.7;
    pointer-events: none;
  }

  .nav-btn-icon {
    height: 18px;
  }

  .loading-icon {
    animation: spin 1s linear infinite;
  }
}

.side-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 44px;
  padding: 4px 12px;
  background: var(--gray-25);
  border-bottom: 1px solid var(--gray-100);
  flex-shrink: 0;
}

.state-entry-btn.active {
  color: var(--main-700);
  background-color: var(--main-20);
}

.state-panel-header {
  padding: 10px 14px;
}

.state-panel-header-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.state-refresh-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 0;
  border: none;
  border-radius: 6px;
  color: var(--gray-500);
  background: transparent;
  cursor: pointer;

  &:hover:not(:disabled) {
    color: var(--main-700);
    background: var(--gray-100);
  }

  &:disabled {
    cursor: not-allowed;
    opacity: 0.6;
  }

  .is-spinning {
    animation: spin 1s linear infinite;
  }
}

.state-panel-title {
  min-width: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-900);
}

.state-panel-summary,
.state-section-meta {
  flex-shrink: 0;
  font-size: 12px;
  color: var(--gray-500);
}

.state-panel-body {
  flex: 1;
  min-height: 0;
  padding: 12px 14px 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: auto;
}

.state-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.state-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.state-section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-800);
}

.state-section-empty {
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--gray-25);
  color: var(--gray-500);
  font-size: 13px;
}

.todo-panel-list {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.todo-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 9px 0;
  border-bottom: 1px solid var(--gray-100);
}

.todo-item:last-child {
  border-bottom: none;
}

.todo-item-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: var(--gray-50);
  color: var(--gray-500);

  &.completed {
    background: var(--color-success-10);
    color: var(--color-success-700);
  }

  &.in_progress {
    background: var(--color-info-10);
    color: var(--color-info-700);
  }

  &.pending {
    background: var(--color-warning-10);
    color: var(--color-warning-700);
  }

  &.cancelled {
    background: var(--color-error-10);
    color: var(--color-error-700);
  }
}

.todo-item-body {
  min-width: 0;
}

.todo-item-text {
  font-size: 14px;
  line-height: 1.5;
  color: var(--gray-800);
  word-break: break-word;
}

.state-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.state-list-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  border: 1px solid var(--gray-100);
  border-radius: 10px;
  background: var(--gray-25);
  color: inherit;
  text-align: left;
}

.state-list-item--button {
  cursor: pointer;
}

.state-list-item--button:hover,
.state-list-item.is-clickable:hover {
  border-color: var(--main-200);
  background: var(--gray-0);
}

.state-list-item.is-clickable {
  cursor: pointer;
}

.state-list-item-icon {
  flex-shrink: 0;
  font-size: 17px;
}

.state-list-item-body {
  min-width: 0;
  flex: 1;
}

.state-list-item-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-900);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.state-list-item-meta {
  margin-top: 2px;
  font-size: 12px;
  line-height: 1.3;
  color: var(--gray-500);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.state-subagent-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border: 1px solid var(--gray-150);
  border-radius: 7px;
  background: var(--gray-0);
  object-fit: cover;
}

.state-subagent-title {
  display: flex;
  align-items: center;
  gap: 6px;
}

.state-subagent-title span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.state-subagent-status-icon {
  flex-shrink: 0;
  font-size: 13px;
}

.state-subagent-completed-icon {
  color: var(--color-success-700);
}

.state-subagent-failed-icon {
  color: var(--color-error-700);
}

.state-subagent-running-icon {
  color: var(--color-info-700);
}

.hide-text {
  display: none;
}

@media (min-width: 769px) {
  .hide-text {
    display: inline;
  }
}

/* AgentState 按钮有内容时的样式 */
.agent-nav-btn.agent-state-btn.has-content:hover:not(.is-disabled) {
  color: var(--gray-900);
  background-color: var(--gray-100);
}

.agent-nav-btn.agent-state-btn.active {
  color: var(--gray-900);
  background-color: var(--gray-100);
}
</style>
