<?php

namespace App\Http\Controllers\Me;

use App\Enums\ChannelType;
use App\Http\Controllers\Controller;
use App\Models\Channel;
use App\Models\User;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Http\Response;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Str;
use Illuminate\Validation\ValidationException;

class ChannelsController extends Controller
{
    public function index(Request $request): JsonResponse
    {
        /** @var User $user */
        $user = $request->attributes->get('user');

        return response()->json(['channels' => $user->channels()->orderBy('id')->get()->map(self::present(...))->values()]);
    }

    public function store(Request $request): JsonResponse
    {
        /** @var User $user */
        $user = $request->attributes->get('user');

        $data = $request->validate([
            'type' => ['required', 'in:webhook'],
            'config' => ['required', 'array'],
            'config.deliver_url' => ['required', 'url'],
            'config.presence_url' => ['required', 'url'],
        ], ['type.in' => 'Через API добавляется только webhook; Telegram подключается через /start.']);

        $channel = $user->channels()->create([
            'type' => ChannelType::Webhook,
            'config' => ['deliver_url' => $data['config']['deliver_url'], 'presence_url' => $data['config']['presence_url']],
            'enabled' => true,
        ]);

        return response()->json(self::present($channel), 201);
    }

    public function destroy(Request $request, int $channel): Response
    {
        /** @var User $user */
        $user = $request->attributes->get('user');
        $model = $user->channels()->whereKey($channel)->firstOrFail();
        if ($model->type === ChannelType::Web) {
            throw ValidationException::withMessages(['channel' => 'Веб-канал удалить нельзя']);
        }
        $model->delete();

        return response()->noContent();
    }

    public function telegramLink(Request $request): JsonResponse
    {
        /** @var User $user */
        $user = $request->attributes->get('user');
        $code = Str::upper(Str::random(6));
        Cache::put("tg:link:{$code}", $user->id, 900);

        return response()->json([
            'code' => $code,
            'bot_url' => 'https://t.me/'.config('hado.telegram.username').'?start='.$code,
        ]);
    }

    /** @return array<string,mixed> */
    public static function present(Channel $channel): array
    {
        return [
            'id' => $channel->id,
            'type' => $channel->type->value,
            'config' => $channel->config,
            'enabled' => $channel->enabled,
        ];
    }
}