Well this doesnt work yet, and is likely not the correct way, this needs more thought put into it, probably a complete rewrite is advisable because bringing this into a shape where it could have multiple Providers is hard

internal/provider/asuratoon.go

@@ -0,0 +1,100 @@
+package provider
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"regexp"
+	"strconv"
+)
+
+type Asura struct{}
+
+func (a Asura) GetImageList(html string) (imageUrls []string, err error) {
+	reg, err := regexp.Compile(`<img decoding="async" class="ts-main-image " src="(.*?)"`)
+	if err != nil {
+		return nil, err
+	}
+	m := reg.FindAllStringSubmatch(html, -1)
+	l := len(m)
+	result := make([]string, l)
+	for i, match := range m {
+		result[i] = match[1]
+	}
+
+	return result, nil
+}
+
+func (a Asura) GetHtml(url string) (html string, err error) {
+	resp, err := http.Get(url)
+
+	// TODO: Testing for above 300 is dirty
+	if err != nil && resp.StatusCode > 300 {
+		return "", errors.New("could not get html")
+	}
+	defer func(Body io.ReadCloser) {
+		err := Body.Close()
+		if err != nil {
+			fmt.Printf("Could not close body because: %v\n", err)
+		}
+	}(resp.Body)
+
+	all, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", err
+	}
+	h := string(all)
+
+	return h, nil
+}
+
+func (a Asura) GetNext(html string) (url string, err error) {
+	//TODO implement me
+	return "#/next/", nil
+}
+
+func (a Asura) GetPrev(html string) (url string, err error) {
+	//TODO implement me
+	return "#/prev/", nil
+}
+
+func (a Asura) GetTitleAndChapter(url string) (title string, chapter string, err error) {
+	//TODO implement me
+	reg, err := regexp.Compile(`\d*-(.*?)-(\d*)/`)
+	if err != nil {
+		return "", "", err
+	}
+
+	matches := reg.FindAllStringSubmatch(url, -1)
+	if len(matches) <= 0 {
+		return "", "", errors.New("no title or chapter found")
+	}
+
+	return matches[0][1], matches[0][2], nil
+}
+
+func (a Asura) GetTitleIdAndChapterId(url string) (titleId int, chapterId int, err error) {
+	//TODO implement me
+	reg, err := regexp.Compile(`(\d*)-.*?-(\d*)/`)
+	if err != nil {
+		return 0, 0, err
+	}
+
+	matches := reg.FindAllStringSubmatch(url, -1)
+	if len(matches) <= 0 {
+		return 0, 0, errors.New("no title or chapter found")
+	}
+	t, err := strconv.Atoi(matches[0][1])
+	if err != nil {
+		return 0, 0, err
+	}
+	c, err := strconv.Atoi(matches[0][2])
+
+	return t, c, nil
+}
+
+func (a Asura) GetThumbnail(mangaId string) (thumbnailUrl string, err error) {
+	//TODO implement me
+	panic("implement me")
+}