<?php

declare(strict_types=1);

namespace App\Services\Cron;

use App\Services\TomTool\Telegram\Slave as TeleSlave;

/**
 * 定时获取 Umami 统计信息并发送至 Telegram 机器人
 */
final class ReportUmami
{
    private string $baseUrl;
    private string $username;
    private string $password;

    public function __construct()
    {
        $this->baseUrl  = (string) "https://".config('path.url_umami_base');
        $this->username = (string) config('key.umami_user');
        $this->password = (string) config('key.umami_pass');
    }

    /**
     * 定时任务入口方法
     */
    public function handle(): void
    {
        try {
            // 1. 获取 API 认证 Token
            $token = $this->getAuthToken();

            if (!$token) {
                TeleSlave::log()->enableDetail(false)->send("⚠️ [Umami 报表失败]: 无法获取 Auth Token，请检查账号密码。");
                return;
            }

            // 2. 获取网站列表
            $websites = $this->getWebsites($token);
            if (empty($websites)) {
                TeleSlave::log()->enableDetail(false)->send("ℹ️ [Umami 报表]: 数据库中未找到任何网站。");
                return;
            }

            // 3. 统计过去 24 小时的数据
            $endAt = (int) (microtime(true) * 1000); // 当前时间戳 (毫秒)
            $startAt = $endAt - (24 * 3600 * 1000);   // 24小时前的时间戳 (毫秒)

            foreach ($websites as $site) {
                
                $siteId   = $site['id'] ?? '';
                $siteName = $site['name'] ?? '未命名站点';
                $domain   = $site['domain'] ?? '';

                if (!$siteId) {
                    continue;
                }

                // 获取单个网站的统计指标
                $stats = $this->getWebsiteStats($token, $siteId, $startAt, $endAt);

                if ($stats) {
                    // 对齐结构：直接获取 int 值
                    $pageviews = $stats['pageviews'] ?? 0;
                    $pageviewsPrev = $stats['comparison']['pageviews'] ?? 0;
                    $visitors  = $stats['visitors'] ?? 0;
                    $visits    = $stats['visits'] ?? 0;
                    $bounces   = $stats['bounces'] ?? 0;

                    // 计算跳出率
                    $bounceRate = $visits > 0 ? round(($bounces / $visits) * 100, 1) : 0;

                    $msg = "\n\n======= 📊 访客统计：{$domain} ===================";
                    $msg .= "\n- 今日：{$pageviews}";
                    $msg .= "\n- 昨日：{$pageviewsPrev}";
                    
                }
            }

            // 4. 发送日志至 Telegram
            TeleSlave::log()->enableDetail(false)->send($msg);

        } catch (\Throwable $e) {
            TeleSlave::log()->enableDetail(false)->send("❌ [Umami 报表异常]: " . $e->getMessage());
        }
    }

    /**
     * 1. 登录 Umami 获取 JWT Token
     */
    private function getAuthToken(): ?string
    {
        $response = $this->curlRequest('POST', '/api/auth/login', [
            'username' => $this->username,
            'password' => $this->password,
        ]);

        return $response['token'] ?? null;
    }

    /**
     * 2. 获取网站列表
     */
    private function getWebsites(string $token): array
    {
        $response = $this->curlRequest('GET', '/api/websites', [], $token);

        // Umami 2.x API 网站列表格式通常包含在 data 字段中
        if (isset($response['data']) && is_array($response['data'])) {
            return $response['data'];
        }

        return is_array($response) ? $response : [];
    }

    /**
     * 3. 获取指定网站的统计数据
     */
    private function getWebsiteStats(string $token, string $siteId, int $startAt, int $endAt): ?array
    {
        $endpoint = sprintf('/api/websites/%s/stats?startAt=%d&endAt=%d', $siteId, $startAt, $endAt);
        return $this->curlRequest('GET', $endpoint, [], $token);
    }

    /**
     * 通用 cURL 请求工具方法
     */
    private function curlRequest(string $method, string $path, array $data = [], ?string $token = null): ?array
    {
        $ch = curl_init(rtrim($this->baseUrl, '/') . $path);

        $headers = [
            'Content-Type: application/json',
            'Accept: application/json',
        ];

        if ($token) {
            $headers[] = 'Authorization: Bearer ' . $token;
        }

        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_TIMEOUT, 10);

        if ($method === 'POST') {
            curl_setopt($ch, CURLOPT_POST, true);
            curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
        }

        $result = curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);

        if ($httpCode >= 200 && $httpCode < 300 && $result) {
            return json_decode($result, true);
        }

        return null;
    }
}