import os

from yuxi.channel.extensions.alexa.types import AlexaAccount


class AlexaConfig:

    ENV_MAP = {
        "application_id": "ALEXA_APPLICATION_ID",
        "skill_id": "ALEXA_SKILL_ID",
        "oauth_client_id": "ALEXA_OAUTH_CLIENT_ID",
        "oauth_client_secret": "ALEXA_OAUTH_CLIENT_SECRET",
        "oauth_introspect_url": "ALEXA_OAUTH_INTROSPECT_URL",
        "dm_policy": "ALEXA_DM_POLICY",
        "account_linking_enabled": "ALEXA_ACCOUNT_LINKING_ENABLED",
        "ssm_l_enabled": "ALEXA_SSML_ENABLED",
        "progressive_response_enabled": "ALEXA_PROGRESSIVE_RESPONSE",
        "proactive_events_enabled": "ALEXA_PROACTIVE_EVENTS_ENABLED",
        "reminders_enabled": "ALEXA_REMINDERS_ENABLED",
        "max_response_chars": "ALEXA_MAX_RESPONSE_CHARS",
        "session_persistence_enabled": "ALEXA_SESSION_PERSISTENCE",
        "session_timeout_seconds": "ALEXA_SESSION_TIMEOUT",
    }

    def list_account_ids(self, config: dict | None = None) -> list[str]:
        if self._resolve_application_id():
            return ["default"]
        return []

    def resolve_account(self, account_id: str = "default") -> AlexaAccount:
        return AlexaAccount(
            account_id=account_id,
            application_id=self._resolve_application_id() or "",
            skill_id=self._env_or_config("skill_id") or "",
            account_linking_enabled=self._env_or_config("account_linking_enabled") == "true",
            oauth_client_id=self._env_or_config("oauth_client_id") or "",
            oauth_client_secret=self._env_or_config("oauth_client_secret") or "",
            oauth_introspect_url=self._env_or_config("oauth_introspect_url") or "",
            dm_policy=self._env_or_config("dm_policy") or "open",
            ssm_l_enabled=self._env_or_config("ssm_l_enabled") != "false",
            progressive_response_enabled=self._env_or_config("progressive_response_enabled") == "true",
            progressive_response_timeout_ms=self._env_int("progressive_response_timeout_ms", 5500),
            proactive_events_enabled=self._env_or_config("proactive_events_enabled") == "true",
            reminders_enabled=self._env_or_config("reminders_enabled") == "true",
            max_response_chars=self._env_int("max_response_chars", 1000),
            session_persistence_enabled=self._env_or_config("session_persistence_enabled") == "true",
            session_timeout_seconds=self._env_int("session_timeout_seconds", 30),
        )

    def is_configured(self, account: dict | None = None) -> bool:
        return bool(self._resolve_application_id())

    def _resolve_application_id(self) -> str | None:
        return self._env_or_config("application_id")

    def _env_or_config(self, key: str) -> str | None:
        env_key = self.ENV_MAP.get(key, "")
        if env_key:
            val = os.getenv(env_key)
            if val:
                return val
        return None

    def _env_int(self, key: str, default: int) -> int:
        val = self._env_or_config(key)
        if val:
            try:
                return int(val)
            except ValueError:
                pass
        return default

    def config_schema(self) -> dict:
        return {
            "$schema": "https://json-schema.org/draft-07/schema#",
            "type": "object",
            "title": "Alexa 渠道配置",
            "properties": {
                "application_id": {
                    "type": "string",
                    "title": "Skill Application ID",
                    "description": "Alexa Developer Console 中的 Skill Application ID (amzn1.ask.skill.*)",
                },
                "skill_id": {
                    "type": "string",
                    "title": "Skill ID",
                    "description": "用于 Skill ID 验证、Proactive Events/Reminders API 的 Skill ID",
                },
                "account_linking_enabled": {
                    "type": "boolean",
                    "title": "启用 Account Linking",
                    "default": False,
                    "description": "是否强制要求 Alexa 用户通过 OAuth 2.0 绑定 ForcePilot 账号",
                },
                "oauth_client_id": {
                    "type": "string",
                    "title": "OAuth Client ID",
                    "description": "在 ForcePilot 后台创建的 OAuth Client ID",
                },
                "oauth_client_secret": {
                    "type": "string",
                    "title": "OAuth Client Secret",
                    "x-ui-password": True,
                    "description": "OAuth Client Secret",
                },
                "oauth_introspect_url": {
                    "type": "string",
                    "title": "OAuth Introspect URL",
                    "description": "外部 OAuth Token 验证端点 URL，留空则使用 JWT 本地验证",
                },
                "dm_policy": {
                    "type": "string",
                    "enum": ["open", "pairing", "allowlist", "disabled"],
                    "default": "open",
                    "title": "DM 策略",
                },
                "progressive_response_enabled": {
                    "type": "boolean",
                    "title": "启用渐进式响应",
                    "default": False,
                    "description": "在 LLM 处理期间先发送'正在查询…'的中间语音",
                },
                "proactive_events_enabled": {
                    "type": "boolean",
                    "title": "启用主动推送通知",
                    "default": False,
                    "description": "允许 ForcePilot 主动推送通知到 Alexa 设备",
                },
                "reminders_enabled": {
                    "type": "boolean",
                    "title": "启用提醒功能",
                    "default": False,
                    "description": "允许为用户创建定时提醒",
                },
                "max_response_chars": {
                    "type": "integer",
                    "title": "最大回复字符数",
                    "default": 1000,
                    "minimum": 100,
                    "maximum": 8000,
                    "description": "单次 SSML 语音响应最大字符数",
                },
                "session_timeout_seconds": {
                    "type": "integer",
                    "title": "Session 超时时间（秒）",
                    "default": 30,
                    "minimum": 10,
                    "maximum": 300,
                },
            },
            "required": ["application_id"],
        }