package main

import (
	"fmt"
	"net/http"
	"net/url"
	"strconv"
	"strings"
	"time"

	"github.com/PuerkitoBio/goquery"
)

func PerformBingImageSearch(query, safe, lang string, page int) ([]ImageSearchResult, time.Duration, error) {
	startTime := time.Now()

	// Build the search URL
	searchURL := buildBingSearchURL(query, page)

	// Make the HTTP request
	resp, err := http.Get(searchURL)
	if err != nil {
		return nil, 0, fmt.Errorf("making request: %v", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		return nil, 0, fmt.Errorf("unexpected status code: %d", resp.StatusCode)
	}

	// Parse the HTML document
	doc, err := goquery.NewDocumentFromReader(resp.Body)
	if err != nil {
		return nil, 0, fmt.Errorf("loading HTML document: %v", err)
	}

	// Extract data using goquery
	var results []ImageSearchResult
	doc.Find(".imgpt").Each(func(i int, s *goquery.Selection) {
		imgTag := s.Find("img")
		imgSrc, exists := imgTag.Attr("src")
		if !exists {
			return
		}

		title, _ := imgTag.Attr("alt")

		// Extract width and height if available
		width, _ := strconv.Atoi(imgTag.AttrOr("width", "0"))
		height, _ := strconv.Atoi(imgTag.AttrOr("height", "0"))

		// Extract the original image URL from the `mediaurl` parameter in the link
		pageLink, exists := s.Find("a.iusc").Attr("href")
		mediaURL := ""
		if exists {
			if u, err := url.Parse(pageLink); err == nil {
				if mediaURLParam := u.Query().Get("mediaurl"); mediaURLParam != "" {
					mediaURL, _ = url.QueryUnescape(mediaURLParam)
				}
			}
		}

		results = append(results, ImageSearchResult{
			Thumbnail:  imgSrc,
			Title:      strings.TrimSpace(title),
			Media:      imgSrc,
			Width:      width,
			Height:     height,
			Source:     mediaURL, // Original image URL
			ThumbProxy: imgSrc,
		})
	})

	duration := time.Since(startTime)

	// Check if the number of results is one or less
	if len(results) <= 1 {
		return nil, duration, fmt.Errorf("no images found")
	}

	return results, duration, nil
}

func buildBingSearchURL(query string, page int) string {
	baseURL := "https://www.bing.com/images/search"
	params := url.Values{}
	params.Add("q", query)
	params.Add("first", fmt.Sprintf("%d", (page-1)*35+1)) // Pagination, but increasing it doesn't seem to make a difference
	params.Add("count", "35")
	params.Add("form", "HDRSC2")
	return baseURL + "?" + params.Encode()
}

// func main() {
// 	results, duration, err := PerformBingImageSearch("kittens", "false", "en", 1)
// 	if err != nil {
// 		fmt.Println("Error:", err)
// 		return
// 	}

// 	fmt.Printf("Search took: %v\n", duration)
// 	fmt.Printf("Total results: %d\n", len(results))
// 	for _, result := range results {
// 		fmt.Printf("Title: %s\nThumbnail: %s\nWidth: %d\nHeight: %d\nThumbProxy: %s\nSource (Original Image URL): %s\n\n",
// 			result.Title, result.Thumbnail, result.Width, result.Height, result.ThumbProxy, result.Source)
// 	}
// }