package kongfz

import (
	"encoding/json"
	"errors"
	"io"
	"log"
	"net/http"
	"net/url"
	"strings"
	"time"
)

var TailTokens = []string{
	"28fe4cf37dd6b2fa74f349236eb99c5c3914ebe3",
	"4014640556b5b7c2181db662dea8775eb2c2469e",
	"44c59815ae2c21935a88887b77cc89f5e3bc1fc3",
	"69a0f30520e40fe617070d0688930366f544727f",
	"1967ba84f30723c259b0dac2bd5734e025316ef8",
	"39fade4d7167d94cef519d873362af1949990fde",
	"cdc7d73a44d0ef8ca84b6618dde283ebca694892",
	"8e93849cff58c83cca7227a6dc99abb56ac3d33f",
	"1fd05fc23e8403431b724d816a115b579c77d515",
	"b20b7d9728ceb5a4006104ef12d164e9438994e6",
	"a97ab57a40df46de2bf850ceb854e8bab282cd33",
}

// BookResponse 孔网数据返回格式
type BookResponse struct {
	Data struct {
		ISBN            string  `json:"isbn"`
		Title           string  `json:"title"`
		Author          string  `json:"author"`
		Publisher       string  `json:"publisher"`
		PublicationTime int64   `json:"publication_time"`
		Price           float64 `json:"price"`
		BookName        string  `json:"book_name"`
		FixPrice        string  `json:"fix_price"`
		BindingLayout   string  `json:"binding_layout"`
		BookPic         string  `json:"book_pic"`
		BookPicS        string  `json:"book_pic_s"`
	} `json:"data"`
	Success bool   `json:"success"`
	Error   string `json:"error"` // <- 新增
}

func GetBookImageByISBN(isbn, proxyType, username, password string) (*BookResponse, error) {
	baseURL := "http://103.236.81.185:8989/api/outGetImageByIsbn"
	client := &http.Client{Timeout: 10 * time.Second}

	for _, token := range TailTokens {
		params := url.Values{}
		params.Set("isbn", isbn)
		params.Set("token", token)
		params.Set("proxyType", proxyType)
		params.Set("username", username)
		params.Set("password", password)

		reqURL := baseURL + "?" + params.Encode()
		log.Println("[GetBookImageByISBN] 请求参数:", reqURL)

		req, err := http.NewRequest("GET", reqURL, nil)
		if err != nil {
			log.Println("[GetBookImageByISBN] 构建请求失败:", err)
			continue
		}

		resp, err := client.Do(req)
		if err != nil {
			log.Println("[GetBookImageByISBN] 请求失败:", err)
			continue
		}

		body, err := io.ReadAll(resp.Body)
		resp.Body.Close() // 立即关闭
		if err != nil {
			log.Println("[GetBookImageByISBN] 读取响应失败:", err)
			continue
		}

		log.Println("[GetBookImageByISBN] 响应:", string(body))

		var res BookResponse
		if err := json.Unmarshal(body, &res); err != nil {
			log.Println("[GetBookImageByISBN] 解析 JSON 失败:", err)
			continue
		}

		log.Printf("[GetBookImageByISBN] 解析后的 Success=%v, Error=%s", res.Success, res.Error)

		if res.Success {
			log.Println("[GetBookImageByISBN] 成功返回 BookResponse")
			return &res, nil
		} else if strings.Contains(res.Error, "请登录后再进行访问") {
			log.Println("[GetBookImageByISBN] Token 需要登录，尝试下一个 token")
			continue
		} else {
			log.Println("[GetBookImageByISBN] 其他错误，直接返回")
			return &res, errors.New(res.Error)
		}
	}

	return nil, errors.New("所有 token 均失效或接口不可用")
}

// 简单包含判断
func contains(s, substr string) bool {
	return strings.Contains(s, substr)
}