from __future__ import annotations

from dataclasses import dataclass, field
from typing import Any


@dataclass
class SetupAdapterRequest:
    channel_id: str
    user_id: str = ""
    config: dict[str, Any] = field(default_factory=dict)
    commands: list[str] = field(default_factory=list)

    @property
    def is_dm(self) -> bool:
        return self.channel_id.startswith("D")


@dataclass
class SetupAdapterResponse:
    text: str = ""
    blocks: list[dict[str, Any]] = field(default_factory=list)
    replace_original: bool = False
    delete_original: bool = False
    ephemeral: bool = True


def handle_setup_command(
    request: SetupAdapterRequest,
) -> SetupAdapterResponse:
    if "wizard" in request.commands or "setup" in request.commands:
        return _render_wizard_response(request)
    if "status" in request.commands:
        return _render_status_response(request)
    if "help" in request.commands:
        return _render_help_response(request)
    return _render_help_response(request)


def _render_wizard_response(request: SetupAdapterRequest) -> SetupAdapterResponse:
    return SetupAdapterResponse(
        text="*Slack Setup Wizard*\n\n"
        "Let's set up your Slack bot integration.\n\n"
        "1. *Bot Token* - Ensure `SLACK_BOT_TOKEN` is set in your environment\n"
        "2. *App Token* - For Socket Mode, set `SLACK_APP_TOKEN`\n"
        "3. *Events* - Subscribe to `message.channels`, `message.im` events\n"
        "4. *Scopes* - Ensure `chat:write`, `channels:history` scopes are added\n\n"
        "Use `/yuxi status` to check current configuration.",
        ephemeral=True,
    )


def _render_status_response(request: SetupAdapterRequest) -> SetupAdapterResponse:
    import os

    token_ok = bool(os.environ.get("SLACK_BOT_TOKEN", "") or request.config.get("token", ""))
    app_token_ok = bool(os.environ.get("SLACK_APP_TOKEN", "") or request.config.get("app_token", ""))
    security = request.config.get("security", {}) or {}
    pairing_enabled = bool(security.get("pairing", {}).get("enabled"))

    text = "*Slack Configuration Status*\n\n"
    text += f"Bot Token: {'✅' if token_ok else '❌'}\n"
    text += f"App Token: {'✅' if app_token_ok else '❌'}\n"
    text += f"Pairing: {'✅ Enabled' if pairing_enabled else '⚠️ Disabled'}\n"
    text += f"Config Keys: {len(request.config)} items\n"

    return SetupAdapterResponse(text=text, ephemeral=True)


def _render_help_response(request: SetupAdapterRequest) -> SetupAdapterResponse:
    return SetupAdapterResponse(
        text="*Slack Setup Help*\n\n"
        "Available commands:\n"
        "• `/yuxi setup` - Start setup wizard\n"
        "• `/yuxi status` - View current configuration\n"
        "• `/yuxi help` - Show this help\n\n"
        "Configuration is managed via `config.yaml` or environment variables.",
        ephemeral=True,
    )