package handlers

import (
	"fanqie/internal/fqapi"
	"fmt"
	"net/http"
	"strconv"
	"strings"
)

// HandleMangaImageProxy 处理漫画图片代理请求
func HandleMangaImageProxy(w http.ResponseWriter, r *http.Request) {
	// 从URL路径提取参数: /manga/image/{itemID}/{index}
	path := strings.TrimPrefix(r.URL.Path, "/manga/image/")
	parts := strings.Split(path, "/")

	if len(parts) != 2 {
		http.Error(w, "Invalid URL format. Expected: /manga/image/{itemID}/{index}", http.StatusBadRequest)
		return
	}

	itemID := parts[0]
	index, err := strconv.Atoi(parts[1])
	if err != nil {
		http.Error(w, "Invalid index parameter", http.StatusBadRequest)
		return
	}

	// 获取解密后的图片数据
	imageData, mimeType, err := fqapi.HandleMangaImageProxy(itemID, index)
	if err != nil {
		http.Error(w, fmt.Sprintf("Failed to get image: %s", err.Error()), http.StatusInternalServerError)
		return
	}

	// 设置响应头
	w.Header().Set("Content-Type", mimeType)
	w.Header().Set("Cache-Control", "public, max-age=3600") // 缓存1小时
	w.Header().Set("Content-Length", strconv.Itoa(len(imageData)))

	// 返回图片数据
	w.Write(imageData)
}