package main

import(
	"log"
	"net/http"
	"github.com/PuerkitoBio/goquery"
	"strconv"
	"strings"
)
type chapter struct{
	verses []string 
}

type book struct{
	chapters []chapter
}

func fetchChapter(book, searchedChapter, version string) (chapter, error){

	url := "https://www.biblegateway.com/passage/?search=" + book + "%20" + searchedChapter +"&version=" + version

	res, err := http.Get(url)
	if err != nil {
		log.Printf("can’t get %s : %v\n", url, err)
		return chapter{}, err
	}

	defer res.Body.Close()
	if res.StatusCode != http.StatusOK {
		log.Printf("error code %v: %v\n", res.StatusCode, res.Status)
		return chapter{}, err
	}

	doc, err := goquery.NewDocumentFromReader(res.Body)
	if err != nil {
		log.Printf("error reading the http response: %v\n", err)
		return chapter{},  err
	}

	chapterText := chapter{}
	replacer := strings.NewReplacer(
				"L'Éternel", "YAHWEH",
				"l'Éternel", "YAHWEH",
				"Éternel", "YAHWEH",
			)

	 doc.Find(".verse > span").Each(func(i int, s *goquery.Selection){
	/**********************************************************************************/
	/**** verses are marked by an .verse class. Inside the text is in a span and  *****/
	/****    begin either by the chapter number (first verse), or by the verse    *****/
	/****    (the other verses). With that the code is straight forward.          *****/
	/**********************************************************************************/
		rawText := s.Text()
		verse:= ""
		if i == 0 {
			verse, _ = strings.CutPrefix(rawText, searchedChapter )
		}else{

			verse, _ = strings.CutPrefix(rawText, strconv.Itoa(i+1))
		}
		verse = replacer.Replace(verse)
		chapterText.verses = append(chapterText.verses, strings.TrimSpace(verse))
	})

	return  chapterText, nil
}

/*
func fecthBook (book, version string,  chapterNumbers int) book, error{
	failedChapter := 0
	bookChapters := book{}

	for i:= 1 ; i > chapterNumbers ; i++{
		verses, err := fetchChapter(book, strconv.Itoa(i), version)
		if err != nil {
			failedChapter++
			log.Printf("%s", err)
			continue
		}
		book.chapters = append(book, 

}
*/