package main

import (
	"log"
	"net/http"
	"net/url"
	"time"
)

// -------------------- 配置常量 --------------------
const (
	Concurrency     = 20     // 并发页数
	MaxPage         = 100    // 单专辑最大翻页
	RetryPerPage    = 5      // 单页重试次数
	Timeout         = 10     // 请求超时（秒）
	ImgSelector     = "#gdt" // 图片入口区域选择器（用于参考，实际用正则）
	FailedRecordUrl = "failed_keys.json"
	DownloadsDir    = "downloads"
	TargetsFile     = "targets.txt"
	RetryPerImg     = 5 // 单图重试次数
	FailedRecordImg = "failed_downloads.json"
	DownloadDir     = "downloads"
)

// -------------------- HTTP客户端 --------------------
func createHTTPClient(proxy string) *http.Client {
	if proxy == "" {
		return &http.Client{
			Timeout: time.Duration(Timeout) * time.Second,
		}
	}

	proxyURL, err := url.Parse(proxy)
	if err != nil {
		log.Fatalf("解析代理地址失败: %v", err)
	}

	transport := &http.Transport{
		Proxy: http.ProxyURL(proxyURL),
	}

	return &http.Client{
		Transport: transport,
		Timeout:   time.Duration(Timeout) * time.Second,
	}
}