<?php
/*
 * Copyright (c) 2025, Антон Аксенов
 * This file is part of m3u.su project
 * MIT License: https://git.axenov.dev/IPTV/web/src/branch/master/LICENSE
 */

declare(strict_types=1);

namespace App\Controllers;

use App\Core\Bot;
use App\Core\Kernel;
use App\Core\StatisticsService;
use App\Exceptions\PlaylistNotFoundException;
use chillerlan\QRCode\QRCode;
use chillerlan\QRCode\QROptions;
use Exception;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;

/**
 * Контроллер методов API
 */
class ApiController extends BasicController
{
    /**
     * Возвращает информацию о плейлисте
     *
     * @param ServerRequestInterface $request
     * @param ResponseInterface $response
     * @return ResponseInterface
     * @throws Exception
     */
    public function getOne(ServerRequestInterface $request, ResponseInterface $response): ResponseInterface
    {
        try {
            $code = $request->getAttributes()['code'] ?? null;
            empty($code) && throw new PlaylistNotFoundException('');

            $playlist = ini()->playlist($code);
            if ($playlist['isOnline'] === true) {
                unset($playlist['content']);
            }
            return $this->responseJson($response, 200, $playlist);
        } catch (PlaylistNotFoundException $e) {
            return $this->responseJsonError($response, 404, $e);
        }
    }

    /**
     * Возвращает информацию о каналов плейлиста
     *
     * @param ServerRequestInterface $request
     * @param ResponseInterface $response
     * @return ResponseInterface
     * @throws Exception
     */
    public function makeQrCode(ServerRequestInterface $request, ResponseInterface $response): ResponseInterface
    {
        $ini = ini()->load();
        $code = $request->getAttribute('code');
        $codes = array_keys($ini);
        if (!in_array($code, $codes, true)) {
            return $response->withStatus(404);
        }

        $filePath = cache_path("qr-codes/$code.jpg");
        if (file_exists($filePath)) {
            $raw = file_get_contents($filePath);
        } else {
            $options = new QROptions([
                'version' => 5,
                'outputType' => QRCode::OUTPUT_IMAGE_JPG,
                'eccLevel' => QRCode::ECC_L,
            ]);
            $data = config('app.mirror_url') ? mirror_url("$code.m3u") : base_url("$code.m3u");
            $raw = new QRCode($options)->render($data, $filePath);
            $raw = base64_decode(str_replace('data:image/jpg;base64,', '', $raw));
        }

        $mime = mime_content_type($filePath);
        $response->getBody()->write($raw);
        return $response->withStatus(200)
            ->withHeader('Content-Type', $mime);
    }

    /**
     * Возвращает информацию о плейлисте
     *
     * @param ServerRequestInterface $request
     * @param ResponseInterface $response
     * @return ResponseInterface
     * @throws Exception
     */
    public function version(ServerRequestInterface $request, ResponseInterface $response): ResponseInterface
    {
        return $this->responseJson($response, 200, [
            'web' => Kernel::VERSION,
            'php' => PHP_VERSION,
            'keydb' => redis()->info('server')['redis_version'],
            'checker' => 'todo',
        ]);
    }

    /**
     * Возвращает информацию о плейлисте
     *
     * @param ServerRequestInterface $request
     * @param ResponseInterface $response
     * @return ResponseInterface
     * @throws Exception
     */
    public function health(ServerRequestInterface $request, ResponseInterface $response): ResponseInterface
    {
        function getSize(string $directory): int
        {
            $size = 0;
            foreach (glob($directory . '/*') as $path){
                is_file($path) && $size += filesize($path);
                is_dir($path) && $size += getSize($path);
            }
            return $size;
        }

        $tgBotInfo = config('bot.token') ? new Bot()->api->getMe() : null;
        $redisInfoServer = redis()->info('server'); // General information about the Redis server
        $redisInfoClients = redis()->info('clients'); // Client connections section
        $redisInfoMemory = redis()->info('memory'); // Memory consumption related information
        $redisInfoPers = redis()->info('persistence'); // RDB and AOF related information
        $redisInfoStats = redis()->info('stats'); // General statistics
        $redisInfoCpu = redis()->info('cpu'); // CPU consumption statistics
        $redisInfoCmd = redis()->info('commandstats'); // Redis command statistics
        $redisInfoKeysp = redis()->info('keyspace'); // Database related statistics
        $redisInfoErr = redis()->info('errorstats'); // Redis error statistics

        $health = [
            'fileCache' => [
                'tv-logos' => [
                    'sizeB' => $size = getSize(cache_path('tv-logos')),
                    'sizeMiB' => round($size / 1024 / 1024, 3),
                    'count' => count(glob(cache_path('tv-logos') . '/*')),
                ],
                'qr-codes' => [
                    'sizeB' => $size = getSize(cache_path('qr-codes')),
                    'sizeMiB' => round($size / 1024 / 1024, 3),
                    'count' => count(glob(cache_path('qr-codes') . '/*')),
                ],
            ],
            'telegram' => [
                'id' => $tgBotInfo->getId(),
                'first_name' => $tgBotInfo->getFirstName(),
                'username' => $tgBotInfo->getUsername(),
            ],
            'redis' => [
                'isConnected' => redis()->isConnected(),
                'info' => [
                    'server' => [
                        'uptime_in_seconds' => $redisInfoServer['uptime_in_seconds'],
                        'uptime_in_days' => $redisInfoServer['uptime_in_days'],
                    ],
                    'clients' => ['connected_clients' => $redisInfoClients['connected_clients']],
                    'memory' => $redisInfoMemory,
                    'persistence' => $redisInfoPers,
                    'stats' => $redisInfoStats,
                    'cpu' => $redisInfoCpu,
                    'commandstats' => $redisInfoCmd,
                    'keyspace' => $redisInfoKeysp,
                    'errorstats' => $redisInfoErr,
                ],
            ],
        ];

        return $this->responseJson($response, 200, $health);
    }

    /**
     * Возвращает информацию о плейлисте
     *
     * @param ServerRequestInterface $request
     * @param ResponseInterface $response
     * @return ResponseInterface
     * @throws Exception
     */
    public function stats(ServerRequestInterface $request, ResponseInterface $response): ResponseInterface
    {
        return $this->responseJson($response, 200, new StatisticsService()->get());
    }
}