<?php

namespace App\Services;

use Illuminate\Support\Facades\File;
use Illuminate\Support\Facades\Log;
use RuntimeException;
use Symfony\Component\Process\Process;

class ChannelProjectService
{
    /**
     * Run tools/new_project.py to materialize public/web/{channelId}/.
     * Domains come from config (系统设置 / env); script rebuilds sync only when domains changed.
     */
    public function generate(string $channelId): void
    {
        $channelId = strtolower(trim($channelId));
        if (! preg_match('/^[a-z0-9]{32}$/', $channelId)) {
            throw new RuntimeException('Invalid channel id');
        }

        $domains = array_values(array_filter(config('coruna.channel_domains', [])));
        if ($domains === []) {
            throw new RuntimeException('投放域名未配置（系统设置 → 投放域名）');
        }

        $labRoot = dirname(base_path()); // coruna-lab/
        $script = $labRoot.'/tools/new_project.py';
        if (! is_file($script)) {
            throw new RuntimeException('new_project.py not found');
        }

        $joined = implode(',', $domains);
        $cmd = [
            'python3',
            $script,
            '--channel-id',
            $channelId,
            '--deployment-domains',
            $joined,
            '--reporting-domains',
            $joined,
        ];

        $process = new Process($cmd, $labRoot);
        $process->setTimeout(600);
        $process->run();

        if (! $process->isSuccessful()) {
            Log::error('new_project failed', [
                'channel_id' => $channelId,
                'out' => $process->getOutput(),
                'err' => $process->getErrorOutput(),
            ]);
            $this->deleteWebTree($channelId);
            throw new RuntimeException(
                '生成渠道资源失败: '.trim($process->getErrorOutput() ?: $process->getOutput() ?: 'unknown')
            );
        }
    }

    public function deleteWebTree(string $channelId): void
    {
        $channelId = strtolower(trim($channelId));
        if (! preg_match('/^[a-z0-9]{32}$/', $channelId)) {
            return;
        }
        $dir = public_path('web/'.$channelId);
        if (is_dir($dir)) {
            File::deleteDirectory($dir);
        }
    }
}