package fqapi

import (
	"fanqie/internal/common"
	"fmt"
)

var categoryLandingLogger = common.NewLogger("category_landing", "INFO", "")

// HandleCategoryLanding 处理获取分类详情,分类详情短缓存 10 分钟
// selectedItems：新版分类标签自带的筛选项（selected_items，透传上游）
func HandleCategoryLanding(categoryID, offset, wordNumber, bookStatus, sortBy, selectedItems interface{}) (string, error) {
	return withCache(fmt.Sprintf("category_landing_%v_%v_%v_%v_%v_%v", categoryID, offset, wordNumber, bookStatus, sortBy, selectedItems), 600, func() (string, error) {
		return fetchCategoryLanding(categoryID, offset, wordNumber, bookStatus, sortBy, selectedItems)
	})
}

func fetchCategoryLanding(categoryID, offset, wordNumber, bookStatus, sortBy, selectedItems interface{}) (string, error) {
	// 参数转换
	categoryIDInt := ParseIntParam(categoryID, 0)
	offsetInt := ParseIntParam(offset, 0)
	wordNumberInt := ParseIntParam(wordNumber, 0)
	bookStatusInt := ParseIntParam(bookStatus, 0)
	sortByInt := ParseIntParam(sortBy, 0)
	selectedItemsStr := ParseStringParam(selectedItems, "")

	if categoryIDInt == 0 && selectedItemsStr == "" {
		return BuildErrorResponseWithCode(100144, "参数错误"), nil
	}

	params := []string{
		fmt.Sprintf("limit=%d", 20),
		fmt.Sprintf("offset=%d", offsetInt),
	}
	if categoryIDInt != 0 {
		params = append(params, fmt.Sprintf("category_id=%d", categoryIDInt))
	}
	if wordNumberInt != 0 {
		params = append(params, fmt.Sprintf("word_number=%d", wordNumberInt))
	}
	if bookStatusInt != 0 {
		params = append(params, fmt.Sprintf("book_status=%d", bookStatusInt))
	}
	if sortByInt != 0 {
		params = append(params, fmt.Sprintf("sort_by=%d", sortByInt))
	}
	// 新版分类标签：selected_items 由 front 页标签自带，需与其 from_front_page 配对透传
	if selectedItemsStr != "" {
		params = append(params,
			"selected_items="+selectedItemsStr,
			"selected_item_from_front_page="+selectedItemsStr,
			"source=front_category",
		)
	}

	reqURL := BuildURL(
		"https://reading.snssdk.com/reading/bookapi/new_category/landing/v/",
		params...,
	)

	resp, err := GorgonRequest(reqURL, map[string]interface{}{
		"method": "GET",
		"headers": map[string]string{
			"User-Agent": "com.dragon.read",
		},
	})

	if err != nil {
		categoryLandingLogger.Error(fmt.Sprintf("获取分类详情失败: %v", err))
		return BuildErrorResponse("请求失败"), err
	}

	respJSON, err := resp.JSON()
	if err != nil {
		return BuildErrorResponse("解析响应失败"), err
	}

	if code, ok := respJSON["code"].(float64); ok && code == 0 {
		return reencodeUnwrapped(resp.Text), nil
	}

	return BuildErrorResponse("获取失败"), nil
}