<?php

use App\Services\TelegramChannelService;
use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Schema;

return new class extends Migration {
    public function up(): void
    {
        if (!Schema::hasTable('telegram_channels')) {
            Schema::create('telegram_channels', function (Blueprint $table) {
                $table->id();
                $table->string('name', 255);
                $table->string('target', 64)->unique();
                $table->string('telegram_chat_id', 24)->nullable()->unique();
                $table->boolean('enabled');
                $table->json('message');
                $table->timestamps();
            });
        }

        if (!Schema::hasTable('telegram_channel_settings')) {
            Schema::create('telegram_channel_settings', function (Blueprint $table) {
                $table->unsignedTinyInteger('id')->primary();
                $table->unsignedBigInteger('default_channel_id')->nullable();
            });
        }

        DB::transaction(function () {
            $settings = DB::table('telegram_channel_settings');
            if ($settings->where('id', 1)->exists()) {
                return;
            }

            $defaultId = null;
            $legacy = Schema::hasTable('config') ? DB::table('config')->where('field', 'channel_message')->value('val') : null;
            $channel = TelegramChannelService::legacyChannel(json_decode($legacy ?? '', true));
            if ($channel !== null) {
                $defaultId = DB::table('telegram_channels')->insertGetId($channel + ['created_at' => now(), 'updated_at' => now()]);
            }
            $settings->insert(['id' => 1, 'default_channel_id' => $defaultId]);
        });
    }

    public function down(): void
    {
        Schema::dropIfExists('telegram_channel_settings');
        Schema::dropIfExists('telegram_channels');
    }
};