package main

import (
	"fmt"
	"io"
	"log"
	"net/http"
	"os"
	"strconv"
	"strings"

	"github.com/PuerkitoBio/goquery"
)

// Βρες τον αριθμό των σελίδων
func getPageNumber(page string) int {
	lastPage := 0

	// Request the HTML page.
	res, err := http.Get(page)
	if err != nil {
		log.Fatal(err)
	}
	defer res.Body.Close()
	if res.StatusCode != 200 {
		log.Fatalf("status code error: %d %s", res.StatusCode, res.Status)
	}

	// Load the HTML document
	doc, err := goquery.NewDocumentFromReader(res.Body)
	if err != nil {
		log.Fatal(err)
	}

	doc.Find("body div.eg-container-outer div ul.pagination.pagination-lg.justify-content-center.flex-wrap.m-0.mx-3.pb-4").Each(func(i int, s *goquery.Selection) {
		s.Find("a").Each(func(i int, s *goquery.Selection) {
			link, ok := s.Attr("href")
			if ok {
				title := s.Text()
				if strings.Contains(title, "...") {
					sliceLink := strings.Split(link, "/")
					s := sliceLink[len(sliceLink)-2]
					// string to int
					lastPage, _ = strconv.Atoi(s)
				}
			}
		})
	})
	return lastPage
}

func ExampleScrape(page string) {
	// Request the HTML page.
	res, err := http.Get(page)
	if err != nil {
		log.Fatal(err)
	}
	defer res.Body.Close()
	if res.StatusCode != 200 {
		log.Fatalf("status code error: %d %s", res.StatusCode, res.Status)
	}

	// Load the HTML document
	doc, err := goquery.NewDocumentFromReader(res.Body)
	if err != nil {
		log.Fatal(err)
	}

	doc.Find("body div.eg-container-outer div.eg-container ul.eg-list").Each(func(i int, s *goquery.Selection) {
		s.Find("a").Each(func(i int, s *goquery.Selection) {
			link, ok := s.Attr("href")
			if ok {
				title := s.Text()

				fmt.Printf("%s [%s]\n", title, link)
			}
		})
	})
}

func GetDownloadLink(page string) {
	// Request the HTML page.
	res, err := http.Get(page)
	if err != nil {
		log.Fatal(err)
	}
	defer res.Body.Close()
	if res.StatusCode != 200 {
		log.Fatalf("status code error: %d %s", res.StatusCode, res.Status)
	}

	// Load the HTML document
	doc, err := goquery.NewDocumentFromReader(res.Body)
	if err != nil {
		log.Fatal(err)
	}

	doc.Find("body div.eg-container.pt-0.pt-sm-3 div.eg-expand.row div.col-md-12.col-lg-4.px-3.mb-3").Each(func(i int, s *goquery.Selection) {
		// test, _ := s.Find("div.col-md-12.col-lg-4.px-3.mb-3").Html()
		//fmt.Println(s.Html())
		action, err := s.Html()
		if err == nil {
			println("Works" + action)
			sliceLink := strings.Split(action, "=")
			println(sliceLink[1])
		}
	})
}

func downloadFile(filepath string, url string) (err error) {

	// Create the file
	out, err := os.Create(filepath)
	if err != nil {
		return err
	}
	defer out.Close()

	// Get the data
	resp, err := http.Get(url)
	if err != nil {
		return err
	}
	defer resp.Body.Close()

	// Writer the body to file
	_, err = io.Copy(out, resp.Body)
	if err != nil {
		return err
	}

	return nil
}

func main() {
	// page := "https://www.emulatorgames.net/roms/gameboy/"
	// var link string
	// lastpage := getPageNumber(page)
	// for i := 1; i <= lastpage; i++ {
	// 	if i == 1 {
	// 		link = "https://www.emulatorgames.net/roms/gameboy/"
	// 	} else {
	// 		link = fmt.Sprintf("%s%d/", page, i)
	// 	}
	// 	ExampleScrape(link)
	// }

	// Get the download link:

	GetDownloadLink("https://www.emulatorgames.net/roms/gameboy/gb-pachislot-hissyouhou-jr/")

	// Download
	// var filename string = "urls.zip"
	// var url1 string = "https://static.emulatorgames.net/roms/gameboy/Akumajou Dracula - Shikkokutaru Zensoukyoku (J) [S][!].zip"

	//downloadFile(filename, url1)
}