"""Microsoft Teams 双重命令授权门控。

DM + Group allowlist 双重检查，确保命令仅在授权范围内执行。
支持 resolveDualTextControlCommandGate 双重命令门控。
"""

from __future__ import annotations

from typing import Any

from yuxi.utils.logging_config import logger


class CommandGate:
    def __init__(self, config: dict[str, Any] | None = None):
        config = config or {}
        self._dm_allowed_commands: set[str] = set(config.get("dm_allowed_commands", []))
        self._group_allowed_commands: set[str] = set(config.get("group_allowed_commands", []))
        self._admin_user_ids: set[str] = set(config.get("admin_user_ids", []))
        self._dm_blocked_commands: set[str] = set(config.get("dm_blocked_commands", []))
        self._group_blocked_commands: set[str] = set(config.get("group_blocked_commands", []))
        self._command_enabled: bool = config.get("command_enabled", True)

    def is_command_authorized(
        self,
        command: str,
        chat_type: str,
        user_id: str = "",
    ) -> bool:
        normalized = command.lower().strip("/")

        if not self._command_enabled:
            return False

        if chat_type == "direct":
            if normalized in self._dm_blocked_commands:
                return False
            if self._dm_allowed_commands:
                return normalized in self._dm_allowed_commands
            return True

        if chat_type in ("group", "channel"):
            if normalized in self._group_blocked_commands:
                return False
            if self._group_allowed_commands:
                return normalized in self._group_allowed_commands
            return True

        return True

    def is_admin(self, user_id: str) -> bool:
        if not self._admin_user_ids:
            return False
        return user_id in self._admin_user_ids

    def resolve_command_gate(
        self,
        config: dict[str, Any] | None,
        command: str,
        chat_type: str,
        user_id: str = "",
    ) -> bool:
        if config:
            team_gate = CommandGate(config)
            if team_gate._dm_allowed_commands or team_gate._group_allowed_commands:
                return team_gate.is_command_authorized(command, chat_type, user_id)
        return self.is_command_authorized(command, chat_type, user_id)

    def resolve_dual_text_control_command_gate(
        self,
        dm_config: dict[str, Any] | None,
        group_config: dict[str, Any] | None,
        command: str,
        chat_type: str,
        user_id: str = "",
    ) -> bool:
        """DM + Group 双重命令门控。

        分别解析 DM 和 Group 配置，执行双重检查。
        按 (chat_type, command) 维度组合授权结果：
        - DM 聊天使用 dm_config 回退到 self
        - Group/Channel 聊天使用 group_config 回退到 self
        """
        normalized = command.lower().strip("/")

        dm_gate = CommandGate(dm_config) if dm_config else self
        group_gate = CommandGate(group_config) if group_config else self

        if chat_type == "direct":
            result = dm_gate._check_command(normalized, "direct")
            if not result:
                logger.debug(f"MSTeams: DM command '{command}' denied by dual gate")
            return result

        if chat_type in ("group", "channel"):
            result = group_gate._check_command(normalized, "group")
            if not result:
                logger.debug(f"MSTeams: Group command '{command}' denied by dual gate")
            return result

        return True

    def _check_command(self, normalized_cmd: str, context: str) -> bool:
        """内部命令检查逻辑，供 resolveDualTextControlCommandGate 使用。"""
        if not self._command_enabled:
            return False

        if context == "direct":
            if normalized_cmd in self._dm_blocked_commands:
                return False
            if self._dm_allowed_commands:
                return normalized_cmd in self._dm_allowed_commands
        elif context in ("group",):
            if normalized_cmd in self._group_blocked_commands:
                return False
            if self._group_allowed_commands:
                return normalized_cmd in self._group_allowed_commands

        return True


resolve_dual_text_control_command_gate = CommandGate.resolve_dual_text_control_command_gate