from __future__ import annotations

import asyncio
import time
from unittest.mock import AsyncMock, MagicMock, patch

import pytest

from yuxi.channels.models import ChannelMessage, ChannelIdentity, DeliveryResult


# ============================================================================
# Test: CommandRegistry (commands/framework.py)
# ============================================================================
class TestCommandRegistry:
    @pytest.fixture
    def registry(self):
        from yuxi.channels.adapters.qqbot.commands.framework import CommandRegistry

        return CommandRegistry()

    @pytest.fixture
    async def sample_handler(self):
        async def handler(ctx):
            from yuxi.channels.adapters.qqbot.commands.framework import CommandResult

            return CommandResult(success=True, message=f"Hello {ctx.command_name}")

        return handler

    @pytest.mark.asyncio
    async def test_register_and_dispatch(self, registry, sample_handler):
        registry.register("test", sample_handler, description="Test command", usage="/test")
        assert "test" in registry._commands

        from yuxi.channels.adapters.qqbot.commands.framework import CommandResult

        result = await registry.dispatch("test", [], "/test", MagicMock(), MagicMock())
        assert isinstance(result, CommandResult)
        assert result.success is True
        assert "Hello test" in result.message

    @pytest.mark.asyncio
    async def test_register_alias(self, registry, sample_handler):
        registry.register("greet", sample_handler, aliases=["hello", "hi"])
        assert "greet" in registry._commands
        assert "hello" in registry._commands
        assert "hi" in registry._commands

        result = await registry.dispatch("hello", [], "/hello", MagicMock(), MagicMock())
        assert result.success is True

    def test_unregister(self, registry, sample_handler):
        async def handler(ctx):
            pass

        registry.register("rm_test", handler, aliases=["rm_alias"])
        registry.unregister("rm_test")
        assert "rm_test" not in registry._commands
        assert "rm_alias" not in registry._commands

    def test_unregister_nonexistent(self, registry):
        registry.unregister("nonexistent")

    @pytest.mark.asyncio
    async def test_dispatch_unknown_command(self, registry):
        from yuxi.channels.adapters.qqbot.commands.framework import CommandResult

        result = await registry.dispatch("unknown", [], "/unknown", MagicMock(), MagicMock())
        assert isinstance(result, CommandResult)
        assert result.success is False
        assert "未知命令" in result.message

    @pytest.mark.asyncio
    async def test_dispatch_handler_exception(self, registry):
        async def failing_handler(ctx):
            raise ValueError("Test error")

        registry.register("fail", failing_handler)
        result = await registry.dispatch("fail", [], "/fail", MagicMock(), MagicMock())
        assert result.success is False
        assert "Test error" in result.message

    def test_resolve_command(self, registry):
        result = registry.resolve("/hello world")
        assert result == ("hello", ["world"])

    def test_resolve_command_no_args(self, registry):
        result = registry.resolve("/ping")
        assert result == ("ping", [])

    def test_resolve_non_command(self, registry):
        result = registry.resolve("hello")
        assert result is None

    def test_resolve_empty_content(self, registry):
        result = registry.resolve("/")
        assert result is None

    def test_resolve_only_slash(self, registry):
        result = registry.resolve("/")
        assert result is None

    def test_command_names(self, registry, sample_handler):
        registry.register("cmd1", sample_handler, aliases=["alias1"])
        registry.register("cmd2", sample_handler)

        names = registry.command_names
        assert "cmd1" in names
        assert "cmd2" in names
        assert "alias1" not in names or (names.count("cmd1") == 1)

    def test_register_default_args(self, registry, sample_handler):
        registry.register("simple", sample_handler)
        cmd = registry._commands["simple"]
        assert cmd.description == ""
        assert cmd.usage == ""
        assert cmd.aliases == []
        assert cmd.metadata == {}


# ============================================================================
# Test: Builtin Commands (commands/builtin.py)
# ============================================================================
class TestBuiltinCommands:
    @pytest.fixture
    def registry(self):
        from yuxi.channels.adapters.qqbot.commands.framework import CommandRegistry

        reg = CommandRegistry()
        from yuxi.channels.adapters.qqbot.commands.builtin import register_builtin_commands

        register_builtin_commands(reg)
        return reg

    @pytest.mark.asyncio
    async def test_ping(self, registry):
        msg = MagicMock(spec=ChannelMessage)
        msg.identity = MagicMock()
        msg.identity.channel_user_id = "user_001"

        result = await registry.dispatch("bot-ping", [], "/bot-ping", msg, MagicMock())
        assert result.success is True
        assert "Pong!" in result.message

    @pytest.mark.asyncio
    async def test_ping_alias(self, registry):
        result = await registry.dispatch("ping", [], "/ping", MagicMock(), MagicMock())
        assert result.success is True
        assert "Pong!" in result.message

    @pytest.mark.asyncio
    async def test_version(self, registry):
        adapter = MagicMock()
        adapter._plugin_version = "2.0.0"
        adapter._bot_info = {"id": "bot_123", "username": "TestBot"}

        result = await registry.dispatch("bot-version", [], "/bot-version", MagicMock(), adapter)
        assert result.success is True
        assert "2.0.0" in result.message

    @pytest.mark.asyncio
    async def test_version_no_bot_info(self, registry):
        adapter = MagicMock()
        adapter._plugin_version = "1.0.0"
        adapter._bot_info = None

        result = await registry.dispatch("bot-version", [], "/bot-version", MagicMock(), adapter)
        assert result.success is True
        assert "1.0.0" in result.message

    @pytest.mark.asyncio
    async def test_help_with_registry(self, registry):
        adapter = MagicMock()
        adapter._command_registry = registry

        result = await registry.dispatch("bot-help", [], "/bot-help", MagicMock(), adapter)
        assert result.success is True
        assert "可用命令" in result.message

    @pytest.mark.asyncio
    async def test_help_no_registry(self, registry):
        adapter = MagicMock()
        adapter._command_registry = None

        result = await registry.dispatch("bot-help", [], "/bot-help", MagicMock(), adapter)
        assert result.success is True
        assert "未初始化" in result.message

    @pytest.mark.asyncio
    async def test_status(self, registry):
        adapter = MagicMock()
        adapter.status = "running"
        adapter._reconnect_manager = None
        adapter._circuit_breaker = None

        result = await registry.dispatch("bot-status", [], "/bot-status", MagicMock(), adapter)
        assert result.success is True
        assert "running" in result.message

    @pytest.mark.asyncio
    async def test_clearlogs(self, registry):
        adapter = MagicMock()
        adapter._known_users = None
        adapter._group_buffer = None

        result = await registry.dispatch("bot-clearlogs", [], "/bot-clearlogs", MagicMock(), adapter)
        assert result.success is True


# ============================================================================
# Test: Streaming Command (commands/streaming_cmd.py)
# ============================================================================
class TestStreamingCommand:
    @pytest.fixture
    def registry(self):
        from yuxi.channels.adapters.qqbot.commands.framework import CommandRegistry

        reg = CommandRegistry()
        from yuxi.channels.adapters.qqbot.commands.streaming_cmd import register_streaming_command

        register_streaming_command(reg)
        return reg

    @pytest.mark.asyncio
    async def test_streaming_no_args(self, registry):
        adapter = MagicMock()
        adapter.config = {"streaming_mode": "block"}

        result = await registry.dispatch("bot-streaming", [], "/bot-streaming", MagicMock(), adapter)
        assert result.success is True
        assert "block" in result.message

    @pytest.mark.asyncio
    async def test_streaming_status(self, registry):
        adapter = MagicMock()
        adapter.config = {"streaming_mode": "off"}

        result = await registry.dispatch("bot-streaming", ["status"], "/bot-streaming status", MagicMock(), adapter)
        assert result.success is True
        assert "off" in result.message

    @pytest.mark.asyncio
    async def test_streaming_on(self, registry):
        adapter = MagicMock()
        adapter.config = {"streaming_mode": "off"}
        adapter.write_config = MagicMock()

        result = await registry.dispatch("bot-streaming", ["on"], "/bot-streaming on", MagicMock(), adapter)
        assert result.success is True
        assert adapter.config["streaming_mode"] == "block"

    @pytest.mark.asyncio
    async def test_streaming_off(self, registry):
        adapter = MagicMock()
        adapter.config = {"streaming_mode": "block"}
        adapter.write_config = MagicMock()

        result = await registry.dispatch("bot-streaming", ["off"], "/bot-streaming off", MagicMock(), adapter)
        assert result.success is True
        assert adapter.config["streaming_mode"] == "off"

    @pytest.mark.asyncio
    async def test_streaming_invalid(self, registry):
        adapter = MagicMock()
        adapter.config = {"streaming_mode": "off"}

        result = await registry.dispatch("bot-streaming", ["invalid"], "/bot-streaming invalid", MagicMock(), adapter)
        assert result.success is False

    @pytest.mark.asyncio
    async def test_streaming_block_keyword(self, registry):
        adapter = MagicMock()
        adapter.config = {"streaming_mode": "off"}
        adapter.write_config = MagicMock()

        result = await registry.dispatch("bot-streaming", ["block"], "/bot-streaming block", MagicMock(), adapter)
        assert result.success is True
        assert adapter.config["streaming_mode"] == "block"

    @pytest.mark.asyncio
    async def test_persist_config_write_error_handled(self, registry):
        adapter = MagicMock()
        adapter.config = {"streaming_mode": "off"}

        def failing_write(key, value):
            raise OSError("Write failed")

        adapter.write_config = failing_write

        result = await registry.dispatch("bot-streaming", ["on"], "/bot-streaming on", MagicMock(), adapter)
        assert result.success is True


# ============================================================================
# Test: MessageSeqManager (send.py)
# ============================================================================
class TestMessageSeqManager:
    @pytest.fixture
    def seq(self):
        from yuxi.channels.adapters.qqbot.send import MessageSeqManager

        return MessageSeqManager()

    @pytest.mark.asyncio
    async def test_acquire_active_increments(self, seq):
        s1 = await seq.acquire_active()
        s2 = await seq.acquire_active()
        assert s2 == s1 + 1

    @pytest.mark.asyncio
    async def test_acquire_passive_decrements(self, seq):
        s1 = await seq.acquire_passive()
        s2 = await seq.acquire_passive()
        assert s2 == s1 - 1

    @pytest.mark.asyncio
    async def test_active_seq_wraps_at_max(self, seq):
        seq._active_seq = seq.MAX_SEQ
        s = await seq.acquire_active()
        assert s == seq.MAX_SEQ
        s2 = await seq.acquire_active()
        assert s2 == 1

    @pytest.mark.asyncio
    async def test_passive_seq_wraps_at_max(self, seq):
        seq._passive_seq = seq.MAX_SEQ
        s = await seq.acquire_passive()
        assert s == seq.MAX_SEQ
        s2 = await seq.acquire_passive()
        assert s2 == seq.MAX_SEQ - 1

    def test_reset(self, seq):
        seq._active_seq = 100
        seq._passive_seq = -50
        seq.reset()
        assert seq._active_seq == 1
        assert seq._passive_seq == 0

    def test_snapshot(self, seq):
        seq._active_seq = 42
        seq._passive_seq = -7
        snap = seq.snapshot()
        assert snap["active_seq"] == 42
        assert snap["passive_seq"] == -7

    def test_restore(self, seq):
        seq.restore({"active_seq": 99, "passive_seq": -3})
        assert seq._active_seq == 99
        assert seq._passive_seq == -3
        assert seq.next_seq == 99


# ============================================================================
# Test: resolve_send_url (send.py)
# ============================================================================
class TestResolveSendUrl:
    def test_group_chat_prefix(self):
        from yuxi.channels.adapters.qqbot.send import resolve_send_url

        url = resolve_send_url("https://api.sgroup.qq.com", "group_test_group")
        assert "groups" in url
        assert "test_group" in url

    def test_dm_chat_prefix(self):
        from yuxi.channels.adapters.qqbot.send import resolve_send_url

        url = resolve_send_url("https://api.sgroup.qq.com", "dm_test_user")
        assert "users" in url
        assert "test_user" in url

    def test_channel_id(self):
        from yuxi.channels.adapters.qqbot.send import resolve_send_url

        url = resolve_send_url("https://api.sgroup.qq.com", "channel_123")
        assert "channels" in url
        assert "channel_123" in url

    def test_empty_chat_id(self):
        from yuxi.channels.adapters.qqbot.send import resolve_send_url

        url = resolve_send_url("https://api.sgroup.qq.com", "")
        assert "@me" in url


# ============================================================================
# Test: render_reply_payload (send.py)
# ============================================================================
class TestRenderReplyPayload:
    def test_basic_payload(self):
        from yuxi.channels.adapters.qqbot.send import render_reply_payload

        payload = render_reply_payload("Hello", msg_type=0)
        assert payload["content"] == "Hello"
        assert payload["msg_type"] == 0

    def test_with_msg_id(self):
        from yuxi.channels.adapters.qqbot.send import render_reply_payload

        payload = render_reply_payload("Hello", msg_type=0, msg_id="msg_001")
        assert payload["msg_id"] == "msg_001"

    def test_chunked_payload(self):
        from yuxi.channels.adapters.qqbot.send import render_reply_payload

        payload = render_reply_payload(
            "Hello", msg_type=0, chunk_index=0, total_chunks=3
        )
        assert payload["chunk_index"] == 0
        assert payload["total_chunks"] == 3

    def test_single_chunk_no_chunk_fields(self):
        from yuxi.channels.adapters.qqbot.send import render_reply_payload

        payload = render_reply_payload("Hello", msg_type=0)
        assert "chunk_index" not in payload
        assert "total_chunks" not in payload


# ============================================================================
# Test: Payload Builders (format.py)
# ============================================================================
class TestBuildTextPayload:
    def test_basic_text(self):
        from yuxi.channels.adapters.qqbot.format import build_text_payload

        resp = MagicMock()
        resp.content = "Hello"
        resp.identity = MagicMock()
        resp.identity.channel_chat_id = "dm_user"
        resp.reply_to_message_id = ""

        payload = build_text_payload(resp)
        assert payload["content"] == "Hello"
        assert payload["msg_type"] == 0

    def test_group_chat(self):
        from yuxi.channels.adapters.qqbot.format import build_text_payload

        resp = MagicMock()
        resp.content = "Hi"
        resp.identity = MagicMock()
        resp.identity.channel_chat_id = "group_abc"
        resp.reply_to_message_id = ""

        payload = build_text_payload(resp)
        assert payload["group_openid"] == "abc"

    def test_with_reply(self):
        from yuxi.channels.adapters.qqbot.format import build_text_payload

        resp = MagicMock()
        resp.content = "Re: Hello"
        resp.identity = MagicMock()
        resp.identity.channel_chat_id = "dm_user"
        resp.reply_to_message_id = "msg_007"

        payload = build_text_payload(resp)
        assert payload["msg_id"] == "msg_007"

    def test_truncation(self):
        from yuxi.channels.adapters.qqbot.format import build_text_payload, TEXT_CONTENT_LIMIT

        long_text = "x" * (TEXT_CONTENT_LIMIT + 100)
        resp = MagicMock()
        resp.content = long_text
        resp.identity = MagicMock()
        resp.identity.channel_chat_id = "dm_user"
        resp.reply_to_message_id = ""

        payload = build_text_payload(resp)
        assert len(payload["content"]) == TEXT_CONTENT_LIMIT


class TestBuildMarkdownPayload:
    def test_markdown_content(self):
        from yuxi.channels.adapters.qqbot.format import build_markdown_payload

        resp = MagicMock()
        resp.content = "**bold**"
        resp.metadata = {}

        payload = build_markdown_payload(resp)
        assert payload["msg_type"] == 2
        assert payload["markdown"]["content"] == "**bold**"

    def test_markdown_template(self):
        from yuxi.channels.adapters.qqbot.format import build_markdown_payload

        resp = MagicMock()
        resp.content = "Content here"
        resp.metadata = {"markdown_template_id": "tpl_001", "title": "My Title"}

        payload = build_markdown_payload(resp)
        assert payload["msg_type"] == 2
        assert payload["markdown"]["template_id"] == "tpl_001"
        params = payload["markdown"]["params"]
        assert any(p["key"] == "title" for p in params)
        assert any(p["key"] == "content" for p in params)


class TestBuildArkPayload:
    def test_ark_payload(self):
        from yuxi.channels.adapters.qqbot.format import build_ark_payload

        resp = MagicMock()
        resp.content = ""
        resp.metadata = {"ark_template_id": "ark_001", "ark_data": {"key1": "val1"}}

        payload = build_ark_payload(resp)
        assert payload["msg_type"] == 3
        assert payload["ark"]["template_id"] == "ark_001"


class TestBuildEmbedPayload:
    def test_embed_payload(self):
        from yuxi.channels.adapters.qqbot.format import build_embed_payload

        resp = MagicMock()
        resp.content = "Description text"
        resp.metadata = {"embed": {"title": "Embed Title", "prompt": "Click here"}}

        payload = build_embed_payload(resp)
        assert payload["msg_type"] == 4
        assert payload["embed"]["title"] == "Embed Title"
        assert payload["embed"]["description"] == "Description text"


class TestBuildImagePayload:
    def test_image_payload(self):
        from yuxi.channels.adapters.qqbot.format import build_image_payload

        resp = MagicMock()
        resp.content = "Image caption"
        resp.identity = MagicMock()
        resp.identity.channel_chat_id = "dm_user"

        payload = build_image_payload(resp, "file_123")
        assert payload["msg_type"] == 1
        assert payload["file_image"] == "file_123"
        assert payload["content"] == "Image caption"


class TestBuildMediaGenericPayload:
    def test_media_generic_payload(self):
        from yuxi.channels.adapters.qqbot.format import build_media_generic_payload

        resp = MagicMock()
        resp.content = "Media caption"
        resp.identity = MagicMock()
        resp.identity.channel_chat_id = "dm_user"

        payload = build_media_generic_payload(resp, "file_abc", msg_type=7)
        assert payload["msg_type"] == 7
        assert payload["media"]["file_info"] == "file_abc"


# ============================================================================
# Test: MarkdownChunker (format.py)
# ============================================================================
class TestMarkdownChunker:
    @pytest.fixture
    def chunker(self):
        from yuxi.channels.adapters.qqbot.format import MarkdownChunker

        return MarkdownChunker(max_chars=500, chunk_overlap=50)

    def test_short_text_no_chunk(self):
        from yuxi.channels.adapters.qqbot.format import MarkdownChunker

        chunker = MarkdownChunker()
        chunks = chunker.chunk("Hello world")
        assert len(chunks) == 1
        assert chunks[0] == "Hello world"

    def test_long_text_splits(self, chunker):
        text = "Paragraph one.\n\nParagraph two.\n\nParagraph three."
        chunks = chunker.chunk(text)
        assert isinstance(chunks, list)
        assert len(chunks) >= 1

    def test_code_block_preserved(self):
        from yuxi.channels.adapters.qqbot.format import MarkdownChunker

        chunker = MarkdownChunker(max_chars=4096)
        text = "Normal text.\n\n```python\nprint('hello')\n```\n\nMore text."
        chunks = chunker.chunk(text)
        combined = "".join(chunks)
        assert "```python" in combined

    def test_force_split_large(self, chunker):
        long_text = "A" * 1000
        chunks = chunker.chunk(long_text)
        assert len(chunks) > 1

    def test_empty_text(self, chunker):
        chunks = chunker.chunk("")
        assert len(chunks) == 1
        assert chunks[0] == ""

    def test_markdown_headers_split(self, chunker):
        text = "# Header 1\nContent under header 1.\n\n## Header 2\nContent under header 2."
        chunks = chunker.chunk(text)
        assert len(chunks) >= 1


# ============================================================================
# Test: MessageCache (message_cache.py)
# ============================================================================
class TestMessageCache:
    @pytest.fixture
    def cache(self):
        from yuxi.channels.adapters.qqbot.message_cache import MessageCache

        return MessageCache(max_messages=10, ttl_s=3600.0)

    def test_record_sent(self, cache):
        result = DeliveryResult(success=True, message_id="msg_001")
        msg = cache.record_sent(result, "chat_001", "Hello")
        assert msg is not None
        assert msg.message_id == "msg_001"
        assert msg.status == "sent"

    def test_record_sent_failure(self, cache):
        result = DeliveryResult(success=False, message_id="msg_002", error="Network error")
        msg = cache.record_sent(result, "chat_001", "Hello")
        assert msg.status == "failed"
        assert msg.error == "Network error"

    def test_record_sent_no_message_id(self, cache):
        result = DeliveryResult(success=True, message_id="")
        msg = cache.record_sent(result, "chat_001", "Hello")
        assert msg is None

    def test_get_message(self, cache):
        result = DeliveryResult(success=True, message_id="msg_003")
        cache.record_sent(result, "chat_001", "Test")
        msg = cache.get("msg_003")
        assert msg is not None
        assert msg.chat_id == "chat_001"

    def test_get_nonexistent(self, cache):
        msg = cache.get("nonexistent")
        assert msg is None

    def test_get_by_chat(self, cache):
        result1 = DeliveryResult(success=True, message_id="msg_a")
        cache.record_sent(result1, "chat_001", "A")
        result2 = DeliveryResult(success=True, message_id="msg_b")
        cache.record_sent(result2, "chat_001", "B")

        msgs = cache.get_by_chat("chat_001")
        assert len(msgs) == 2

    def test_record_update(self, cache):
        result = DeliveryResult(success=True, message_id="msg_004")
        cache.record_sent(result, "chat_001", "Original")
        updated = cache.record_update("msg_004", "Updated")
        assert updated is not None
        assert updated.content == "Updated"
        assert updated.update_count == 1

    def test_record_update_nonexistent(self, cache):
        updated = cache.record_update("no_such_id", "Content")
        assert updated is None

    def test_max_messages_eviction(self, cache):
        for i in range(15):
            result = DeliveryResult(success=True, message_id=f"msg_{i:03d}")
            cache.record_sent(result, "chat_001", f"Content {i}")
        snapshot = cache.snapshot
        assert snapshot["total"] <= 10

    def test_cleanup_expired(self, cache):
        result = DeliveryResult(success=True, message_id="msg_old")
        msg = cache.record_sent(result, "chat_001", "Old")
        if msg:
            msg.sent_at = time.time() - 7200

        count = cache.cleanup_expired()
        assert count >= 0

    def test_clear(self, cache):
        result = DeliveryResult(success=True, message_id="msg_001")
        cache.record_sent(result, "chat_001", "Test")
        count = cache.clear()
        assert count == 1
        assert cache.snapshot["total"] == 0

    def test_snapshot(self, cache):
        result = DeliveryResult(success=True, message_id="msg_001")
        cache.record_sent(result, "chat_001", "Test")
        snap = cache.snapshot
        assert "total" in snap
        assert "max" in snap
        assert "recent" in snap

    def test_content_truncation(self, cache):
        long_content = "x" * 1000
        result = DeliveryResult(success=True, message_id="msg_long")
        msg = cache.record_sent(result, "chat_001", long_content)
        assert len(msg.content) == 500


# ============================================================================
# Test: MessageQueue (message_queue.py)
# ============================================================================
class TestMessageQueue:
    @pytest.fixture
    def make_msg(self):
        def _make(user_id="user_001", chat_id="dm_user", content="Hello"):
            msg = MagicMock(spec=ChannelMessage)
            msg.identity = MagicMock()
            msg.identity.channel_user_id = user_id
            msg.identity.channel_chat_id = chat_id
            msg.content = content
            return msg

        return _make

    @pytest.fixture
    def queue(self):
        from yuxi.channels.adapters.qqbot.message_queue import MessageQueue

        return MessageQueue(global_limit=10, per_user_limit=5, per_group_limit=5)

    @pytest.mark.asyncio
    async def test_enqueue_dequeue(self, queue, make_msg):
        msg = make_msg()
        result = await queue.enqueue(msg)
        assert result is True
        assert queue.size == 1

        dequeued = await queue.dequeue()
        assert dequeued is msg
        assert queue.size == 0

    @pytest.mark.asyncio
    async def test_per_user_limit(self, queue, make_msg):
        queue._per_user_limit = 2
        for _ in range(3):
            await queue.enqueue(make_msg(user_id="user_001"))
        assert queue.size <= 2

    @pytest.mark.asyncio
    async def test_per_group_limit(self, queue, make_msg):
        queue._per_group_limit = 2
        for _ in range(3):
            await queue.enqueue(make_msg(chat_id="group_abc"))
        assert queue.size <= 2

    @pytest.mark.asyncio
    async def test_acquire_release(self, queue):
        result = await queue.acquire()
        assert result is True
        queue.release()

    @pytest.mark.asyncio
    async def test_acquire_semaphore(self, queue):
        queue._max_concurrency = 1
        assert await queue.acquire() is True

    @pytest.mark.asyncio
    async def test_release_no_acquire(self, queue):
        queue.release()

    @pytest.mark.asyncio
    async def test_drain(self, queue, make_msg):
        await queue.enqueue(make_msg())
        await queue.enqueue(make_msg())
        msgs = await queue.drain()
        assert len(msgs) == 2
        assert queue.size == 0

    @pytest.mark.asyncio
    async def test_task_done(self, queue, make_msg):
        await queue.enqueue(make_msg())
        await queue.dequeue()
        queue.task_done()

    @pytest.mark.asyncio
    async def test_snapshot(self, queue, make_msg):
        await queue.enqueue(make_msg())
        snap = queue.snapshot
        assert snap["queue_size"] == 1
        assert "per_user_counts" in snap
        assert "per_group_counts" in snap

    @pytest.mark.asyncio
    async def test_global_limit_overwrite(self, queue, make_msg):
        queue._global_limit = 2
        for i in range(4):
            await queue.enqueue(make_msg(user_id=f"user_{i:03d}"))
        assert queue.size <= 2

    @pytest.mark.asyncio
    async def test_group_limit_only_group_chats(self, queue, make_msg):
        queue._per_group_limit = 3
        await queue.enqueue(make_msg(chat_id="dm_user"))
        await queue.enqueue(make_msg(chat_id="channel_123"))
        assert queue.size == 2


# ============================================================================
# Test: TokenBucket (rate_limiter.py)
# ============================================================================
class TestTokenBucket:
    @pytest.fixture
    def bucket(self):
        from yuxi.channels.adapters.qqbot.rate_limiter import TokenBucket

        return TokenBucket(rate=100.0, burst=10)

    @pytest.mark.asyncio
    async def test_initial_tokens(self, bucket):
        assert bucket._tokens == 10.0

    async def test_try_acquire_sufficient(self, bucket):
        assert bucket.try_acquire(5.0) is True
        assert bucket._tokens <= 5.0

    def test_try_acquire_insufficient(self, bucket):
        assert bucket.try_acquire(20.0) is False

    @pytest.mark.asyncio
    async def test_acquire_waits(self, bucket):
        bucket._tokens = 0
        bucket.rate = 1000.0

        async def add_tokens():
            await asyncio.sleep(0.05)
            bucket._tokens = 5.0

        asyncio.create_task(add_tokens())
        await bucket.acquire(1.0)

    @pytest.mark.asyncio
    async def test_refill(self, bucket):
        bucket._tokens = 0
        bucket.rate = 100.0
        await asyncio.sleep(0.02)
        bucket._refill()
        assert bucket._tokens > 0

    def test_empty_bucket_with_zero_rate(self, bucket):
        bucket._tokens = 0
        bucket.rate = 0.0
        assert bucket.try_acquire(1.0) is False


# ============================================================================
# Test: RouteRateLimiter (rate_limiter.py)
# ============================================================================
class TestRouteRateLimiter:
    @pytest.fixture
    def limiter(self):
        from yuxi.channels.adapters.qqbot.rate_limiter import RouteRateLimiter

        return RouteRateLimiter()

    def test_try_acquire_default(self, limiter):
        assert limiter.try_acquire("default", 1.0) is True

    def test_try_acquire_unknown_route(self, limiter):
        assert limiter.try_acquire("unknown_route", 1.0) is True

    @pytest.mark.asyncio
    async def test_acquire_default(self, limiter):
        await limiter.acquire("default", 1.0)

    def test_get_stats(self, limiter):
        limiter.try_acquire("send_message", 1.0)
        stats = limiter.get_stats()
        assert "send_message" in stats

    def test_custom_defaults(self):
        from yuxi.channels.adapters.qqbot.rate_limiter import RouteRateLimiter

        limiter = RouteRateLimiter(defaults={"custom": (100.0, 10), "default": (10.0, 20)})
        result = limiter.try_acquire("custom", 1.0)
        assert result is True

    def test_default_route(self):
        from yuxi.channels.adapters.qqbot.rate_limiter import RouteRateLimiter

        limiter = RouteRateLimiter()
        result = limiter.try_acquire("send_message", 1.0)
        assert result is True


# ============================================================================
# Test: RetryTask & MessageRetryQueue (retry_queue.py)
# ============================================================================
class TestRetryTask:
    def test_retry_task_creation(self):
        from yuxi.channels.adapters.qqbot.retry_queue import RetryTask

        task = RetryTask(
            task_id="t_001",
            chat_id="chat_001",
            payload={"content": "Hello"},
            max_attempts=3,
        )
        assert task.task_id == "t_001"
        assert task.attempt == 0
        assert task.max_attempts == 3


class TestMessageRetryQueue:
    @pytest.fixture
    def retry_queue(self):
        from yuxi.channels.adapters.qqbot.retry_queue import MessageRetryQueue

        return MessageRetryQueue(max_concurrent=2, poll_interval=0.01)

    @pytest.fixture
    def make_task(self):
        from yuxi.channels.adapters.qqbot.retry_queue import RetryTask

        def _make(task_id="t_001", chat_id="chat_001", max_attempts=3):
            return RetryTask(
                task_id=task_id,
                chat_id=chat_id,
                payload={"content": "Hello"},
                max_attempts=max_attempts,
                base_delay=0.01,
                max_delay=0.1,
            )

        return _make

    @pytest.mark.asyncio
    async def test_enqueue(self, retry_queue, make_task):
        task = make_task()
        await retry_queue.enqueue(task)
        assert retry_queue.pending_count == 1

    @pytest.mark.asyncio
    async def test_enqueue_duplicate_id(self, retry_queue, make_task):
        task = make_task(task_id="dup_001")
        await retry_queue.enqueue(task)
        retry_queue._active_tasks.add("dup_001")
        await retry_queue.enqueue(make_task(task_id="dup_001"))
        assert retry_queue.pending_count == 1

    @pytest.mark.asyncio
    async def test_start_stop(self, retry_queue):
        await retry_queue.start()
        assert retry_queue._running is True
        await retry_queue.stop()
        assert retry_queue._running is False

    @pytest.mark.asyncio
    async def test_start_twice(self, retry_queue):
        await retry_queue.start()
        await retry_queue.start()
        assert retry_queue._running is True
        await retry_queue.stop()

    @pytest.mark.asyncio
    async def test_worker_processes_task(self, retry_queue, make_task):
        call_count = 0

        async def send_cb(chat_id, payload):
            nonlocal call_count
            call_count += 1
            return True

        retry_queue.set_send_callback(send_cb)
        task = make_task()
        task.next_retry_at = 0
        await retry_queue.enqueue(task)
        await retry_queue.start()
        await asyncio.sleep(0.05)
        await retry_queue.stop()
        assert call_count >= 1

    @pytest.mark.asyncio
    async def test_dead_letter_on_exhausted(self, retry_queue, make_task):
        async def send_cb(chat_id, payload):
            return False

        retry_queue.set_send_callback(send_cb)
        task = make_task(task_id="exhaust_001", max_attempts=1)
        task.next_retry_at = 0
        await retry_queue.enqueue(task)
        await retry_queue.start()
        await asyncio.sleep(0.1)
        await retry_queue.stop()
        assert retry_queue.dead_count >= 1

    @pytest.mark.asyncio
    async def test_clear_dead_letter(self, retry_queue, make_task):
        task = make_task(task_id="dead_001")
        retry_queue._dead_letter.append(task)
        count = retry_queue.clear_dead_letter()
        assert count == 1
        assert retry_queue.dead_count == 0

    @pytest.mark.asyncio
    async def test_get_dead_letter_tasks(self, retry_queue, make_task):
        task = make_task()
        retry_queue._dead_letter.append(task)
        tasks = retry_queue.get_dead_letter_tasks()
        assert len(tasks) == 1

    @pytest.mark.asyncio
    async def test_no_send_callback(self, retry_queue, make_task):
        task = make_task()
        task.next_retry_at = 0
        await retry_queue.enqueue(task)
        await retry_queue.start()
        await asyncio.sleep(0.05)
        await retry_queue.stop()

    @pytest.mark.asyncio
    async def test_send_callback_raises(self, retry_queue, make_task):
        async def raising_cb(chat_id, payload):
            raise RuntimeError("Send failed")

        retry_queue.set_send_callback(raising_cb)
        task = make_task()
        task.next_retry_at = 0
        await retry_queue.enqueue(task)
        await retry_queue.start()
        await asyncio.sleep(0.05)
        await retry_queue.stop()


# ============================================================================
# Test: Media Tags (media_tags.py)
# ============================================================================
class TestParseMediaTags:
    def test_parse_qqmedia_image(self):
        from yuxi.channels.adapters.qqbot.media_tags import parse_media_tags

        result = parse_media_tags("Check this: <qqmedia:image:file_123>")
        assert len(result.media_items) == 1
        assert result.media_items[0].media_type == "image"
        assert result.media_items[0].reference == "file_123"

    def test_parse_qqmedia_voice(self):
        from yuxi.channels.adapters.qqbot.media_tags import parse_media_tags

        result = parse_media_tags("<qqmedia:voice:audio_456>")
        assert result.media_items[0].media_type == "voice"
        assert result.media_items[0].reference == "audio_456"

    def test_parse_qqimg(self):
        from yuxi.channels.adapters.qqbot.media_tags import parse_media_tags

        result = parse_media_tags("<qqimg:https://example.com/img.png>")
        assert result.media_items[0].media_type == "image"
        assert result.media_items[0].is_url is True

    def test_parse_qqvideo(self):
        from yuxi.channels.adapters.qqbot.media_tags import parse_media_tags

        result = parse_media_tags("<qqvideo:https://example.com/vid.mp4>")
        assert result.media_items[0].media_type == "video"
        assert result.media_items[0].is_url is True

    def test_parse_multiple_media(self):
        from yuxi.channels.adapters.qqbot.media_tags import parse_media_tags

        result = parse_media_tags(
            "<qqmedia:image:f1> text <qqmedia:video:f2>"
        )
        assert len(result.media_items) == 2

    def test_clean_text_from_tags(self):
        from yuxi.channels.adapters.qqbot.media_tags import parse_media_tags

        result = parse_media_tags("Hello <qqmedia:image:f1> World")
        assert "Hello" in result.text
        assert "World" in result.text
        assert "<qqmedia" not in result.text

    def test_has_media_tags_positive(self):
        from yuxi.channels.adapters.qqbot.media_tags import has_media_tags

        assert has_media_tags("<qqmedia:image:file_123>") is True

    def test_has_media_tags_negative(self):
        from yuxi.channels.adapters.qqbot.media_tags import has_media_tags

        assert has_media_tags("Plain text") is False

    def test_has_media_tags_empty(self):
        from yuxi.channels.adapters.qqbot.media_tags import has_media_tags

        assert has_media_tags("") is False

    def test_parsed_content_has_media(self):
        from yuxi.channels.adapters.qqbot.media_tags import ParsedContent, InlineMedia

        pc = ParsedContent(text="", media_items=[])
        assert pc.has_media is False

        pc.media_items.append(InlineMedia(media_type="image", reference="f1"))
        assert pc.has_media is True


class TestParseSizeTag:
    def test_parse_size_tag(self):
        from yuxi.channels.adapters.qqbot.media_tags import parse_size_tag

        result = parse_size_tag("<qqsize:1000>Some content</qqsize>", default_limit=2000)
        assert result.text == "Some content"
        assert result.size_limit == 1000

    def test_parse_size_tag_no_tag(self):
        from yuxi.channels.adapters.qqbot.media_tags import parse_size_tag

        result = parse_size_tag("Plain text", default_limit=2000)
        assert result.text == "Plain text"
        assert result.size_limit == 2000


class TestBuildMediaTag:
    def test_build_media_tag_image_url(self):
        from yuxi.channels.adapters.qqbot.media_tags import build_media_tag

        tag = build_media_tag("image", "https://example.com/img.png", is_url=True)
        assert tag == "<qqimg:https://example.com/img.png>"

    def test_build_media_tag_video_url(self):
        from yuxi.channels.adapters.qqbot.media_tags import build_media_tag

        tag = build_media_tag("video", "https://example.com/vid.mp4", is_url=True)
        assert tag == "<qqvideo:https://example.com/vid.mp4>"

    def test_build_media_tag_file(self):
        from yuxi.channels.adapters.qqbot.media_tags import build_media_tag

        tag = build_media_tag("file", "file_123", is_url=False)
        assert tag == "<qqmedia:file:file_123>"

    def test_build_media_tags_list(self):
        from yuxi.channels.adapters.qqbot.media_tags import build_media_tags, InlineMedia

        items = [
            InlineMedia(media_type="image", reference="f1"),
            InlineMedia(media_type="voice", reference="v1"),
        ]
        tags = build_media_tags(items)
        assert "<qqmedia:image:f1>" in tags
        assert "<qqmedia:voice:v1>" in tags


class TestEmbedMediaInText:
    def test_embed_media(self):
        from yuxi.channels.adapters.qqbot.media_tags import embed_media_in_text, InlineMedia

        items = [InlineMedia(media_type="image", reference="f1")]
        result = embed_media_in_text("Hello", items)
        assert "Hello" in result
        assert "<qqmedia" in result

    def test_embed_no_media(self):
        from yuxi.channels.adapters.qqbot.media_tags import embed_media_in_text

        result = embed_media_in_text("Hello", [])
        assert result == "Hello"


# ============================================================================
# Test: InboundPipeline (inbound_pipeline.py)
# ============================================================================
class TestPipelineContext:
    def test_pipeline_context_creation(self):
        from yuxi.channels.adapters.qqbot.inbound_pipeline import PipelineContext

        ctx = PipelineContext()
        assert ctx.stopped is False

    def test_stop_sets_reason(self):
        from yuxi.channels.adapters.qqbot.inbound_pipeline import PipelineContext

        ctx = PipelineContext()
        ctx.stop("security_block")
        assert ctx.stopped is True

    def test_stop_only_once_effective(self):
        from yuxi.channels.adapters.qqbot.inbound_pipeline import PipelineContext

        ctx = PipelineContext()
        ctx.stop("first")
        ctx.stop("second")
        assert ctx.stopped is True

    def test_debug_summary(self):
        from yuxi.channels.adapters.qqbot.inbound_pipeline import PipelineContext

        ctx = PipelineContext()
        ctx.stop("test_reason")
        summary = ctx.debug_summary()
        assert isinstance(summary, str)


# ============================================================================
# Test: KnownUserTracker edge cases (more thorough)
# ============================================================================
class TestKnownUserTrackerEdgeCases:
    @pytest.fixture
    def tmp_persist_dir(self, tmp_path):
        return str(tmp_path)

    def test_get_recent_users_returns_max_n(self, tmp_persist_dir):
        from yuxi.channels.adapters.qqbot.known_users import KnownUserTracker

        tracker = KnownUserTracker("test_app", persist_dir=tmp_persist_dir, max_users=10)
        for i in range(20):
            tracker.record(f"user_{i:03d}", f"Name_{i}")
        recent = tracker.get_recent_users(5)
        assert len(recent) <= 5

    def test_clear_resets_properties(self, tmp_persist_dir):
        from yuxi.channels.adapters.qqbot.known_users import KnownUserTracker

        tracker = KnownUserTracker("test_app", persist_dir=tmp_persist_dir)
        tracker.record("user_a", "Alice")
        tracker.clear()
        assert tracker.count == 0
        assert tracker.is_known("user_a") is False


# ============================================================================
# Test: ConfigHints (config_hints.py)
# ============================================================================
class TestConfigHints:
    def test_import_config_hints(self):
        from yuxi.channels.adapters.qqbot import config_hints

        assert config_hints is not None

    def test_get_config_hints(self):
        from yuxi.channels.adapters.qqbot.config_hints import get_config_hints

        hints = get_config_hints()
        assert isinstance(hints, list)
        assert len(hints) > 0


# ============================================================================
# Test: Constants (constants.py)
# ============================================================================
class TestConstants:
    def test_chat_prefixes(self):
        from yuxi.channels.adapters.qqbot.constants import GROUP_CHAT_PREFIX, DM_CHAT_PREFIX

        assert GROUP_CHAT_PREFIX.startswith("group_")
        assert DM_CHAT_PREFIX.startswith("dm_")

    def test_message_limits(self):
        from yuxi.channels.adapters.qqbot.format import (
            TEXT_CONTENT_LIMIT,
            MARKDOWN_CONTENT_LIMIT,
        )

        assert TEXT_CONTENT_LIMIT > 0
        assert MARKDOWN_CONTENT_LIMIT > 0

    def test_qqbot_events(self):
        from yuxi.channels.adapters.qqbot.constants import EventType

        assert hasattr(EventType, "AT_MESSAGE_CREATE")
        assert hasattr(EventType, "DIRECT_MESSAGE_CREATE")
        assert hasattr(EventType, "MESSAGE_CREATE")


# ============================================================================
# Test: Send with retry edge cases (send.py)
# ============================================================================
class TestSendWithRetryEdgeCases:
    @pytest.mark.asyncio
    async def test_resolve_send_url_dm_starts_with(self):
        from yuxi.channels.adapters.qqbot.send import resolve_send_url

        url = resolve_send_url("https://api.sgroup.qq.com", "dm_user_123")
        assert "users" in url

    @pytest.mark.asyncio
    async def test_resolve_send_url_group_starts_with(self):
        from yuxi.channels.adapters.qqbot.send import resolve_send_url

        url = resolve_send_url("https://api.sgroup.qq.com", "group_test")
        assert "groups" in url

    @pytest.mark.asyncio
    async def test_resolve_send_url_channel(self):
        from yuxi.channels.adapters.qqbot.send import resolve_send_url

        url = resolve_send_url("https://api.sgroup.qq.com", "ch_abc")
        assert "channels" in url


# ============================================================================
# Test: SessionStore additional (session_store.py)
# ============================================================================
class TestSessionStoreAdditional:
    @pytest.fixture
    def tmp_dir(self, tmp_path):
        return str(tmp_path)

    def test_create_session_store(self, tmp_dir):
        from yuxi.channels.adapters.qqbot.session_store import SessionStore

        store = SessionStore("app_test", store_dir=tmp_dir)
        assert store is not None


# ============================================================================
# Test: Reference types (ref/types.py)
# ============================================================================
class TestRefTypes:
    def test_ref_item(self):
        from yuxi.channels.adapters.qqbot.ref.types import RefItem, RefCategory

        ref = RefItem(
            ref_id="ref_001",
            category=RefCategory.MSG,
            value="Hello world",
            label="msg_001",
            chat_id="chat_001",
            user_id="user_001",
        )
        assert ref.category == RefCategory.MSG
        assert ref.label == "msg_001"

    def test_ref_index_create(self):
        from yuxi.channels.adapters.qqbot.ref.store import RefIndex

        idx = RefIndex()
        assert idx is not None