goyomi/sources/base/guya/guya.go

// Package guya implements the Guya/Manga4Life reader base.
// GET {base}/api/get_all_series/ returns all manga as a JSON map.
package guya

import (
	"context"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"strings"

	"goyomi/internal/httpclient"
	"goyomi/internal/source"
)

type Config struct {
	Name    string
	BaseURL string
	Lang    string
}

type seriesEntry struct {
	Title     string `json:"title"`
	CoverVol  string `json:"cover_vol"`
	Groups    map[string]string `json:"groups"`
	Chapters  map[string]chapterEntry `json:"chapters"`
}

type chapterEntry struct {
	Title  string            `json:"title"`
	Date   int64             `json:"date"`
	Groups map[string][]string `json:"groups"`
}

type Source struct {
	cfg    Config
	client *httpclient.Client
	id     int64
}

func New(cfg Config) *Source {
	c := httpclient.NewClient(httpclient.WithRateLimit(1, 2))
	return &Source{cfg: cfg, client: c, id: source.GenerateSourceID(cfg.Name, cfg.Lang)}
}

func (s *Source) ID() int64           { return s.id }
func (s *Source) Name() string        { return s.cfg.Name }
func (s *Source) Lang() string        { return s.cfg.Lang }
func (s *Source) SupportsLatest() bool { return true }

func (s *Source) base() string { return strings.TrimRight(s.cfg.BaseURL, "/") }

func (s *Source) getAllSeries(ctx context.Context) (map[string]seriesEntry, error) {
	req, err := http.NewRequestWithContext(ctx, http.MethodGet, s.base()+"/api/get_all_series/", nil)
	if err != nil {
		return nil, err
	}
	resp, err := s.client.Do(req)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("guya: HTTP %d", resp.StatusCode)
	}
	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, err
	}
	var result map[string]seriesEntry
	if err := json.Unmarshal(body, &result); err != nil {
		return nil, err
	}
	return result, nil
}

func (s *Source) toSManga(slug string, entry seriesEntry) source.SManga {
	thumb := ""
	if entry.CoverVol != "" {
		thumb = fmt.Sprintf("%s/media/manga/%s/volume-covers/%s", s.base(), slug, entry.CoverVol)
	}
	return source.SManga{
		URL:          fmt.Sprintf("/reader/series/%s/", slug),
		Title:        entry.Title,
		ThumbnailURL: thumb,
	}
}

func (s *Source) GetPopularManga(page int) (source.MangasPage, error) {
	if page > 1 {
		return source.MangasPage{}, nil
	}
	series, err := s.getAllSeries(context.Background())
	if err != nil {
		return source.MangasPage{}, err
	}
	var mangas []source.SManga
	for slug, entry := range series {
		mangas = append(mangas, s.toSManga(slug, entry))
	}
	return source.MangasPage{Mangas: mangas, HasNextPage: false}, nil
}

func (s *Source) GetLatestUpdates(page int) (source.MangasPage, error) {
	return s.GetPopularManga(page)
}

func (s *Source) GetSearchManga(page int, query string, filters []source.Filter) (source.MangasPage, error) {
	mp, err := s.GetPopularManga(1)
	if err != nil {
		return source.MangasPage{}, err
	}
	q := strings.ToLower(query)
	var matched []source.SManga
	for _, m := range mp.Mangas {
		if strings.Contains(strings.ToLower(m.Title), q) {
			matched = append(matched, m)
		}
	}
	return source.MangasPage{Mangas: matched, HasNextPage: false}, nil
}

func (s *Source) GetMangaDetails(manga source.SManga) (source.SManga, error) {
	slug := strings.Trim(strings.TrimPrefix(manga.URL, "/reader/series/"), "/")
	apiURL := fmt.Sprintf("%s/api/series/%s/", s.base(), slug)
	req, err := http.NewRequestWithContext(context.Background(), http.MethodGet, apiURL, nil)
	if err != nil {
		return manga, err
	}
	resp, err := s.client.Do(req)
	if err != nil {
		return manga, err
	}
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	var entry seriesEntry
	if err := json.Unmarshal(body, &entry); err != nil {
		return manga, err
	}
	return s.toSManga(slug, entry), nil
}

func (s *Source) GetChapterList(manga source.SManga) ([]source.SChapter, error) {
	slug := strings.Trim(strings.TrimPrefix(manga.URL, "/reader/series/"), "/")
	apiURL := fmt.Sprintf("%s/api/series/%s/", s.base(), slug)
	req, _ := http.NewRequestWithContext(context.Background(), http.MethodGet, apiURL, nil)
	resp, err := s.client.Do(req)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	var entry seriesEntry
	if err := json.Unmarshal(body, &entry); err != nil {
		return nil, err
	}
	var chapters []source.SChapter
	for chNum, ch := range entry.Chapters {
		name := "Chapter " + chNum
		if ch.Title != "" {
			name += " - " + ch.Title
		}
		chapters = append(chapters, source.SChapter{
			URL:        fmt.Sprintf("%s/reader/series/%s/%s/", s.base(), slug, chNum),
			Name:       name,
			DateUpload: ch.Date * 1000,
		})
	}
	return chapters, nil
}

func (s *Source) GetPageList(chapter source.SChapter) ([]source.Page, error) {
	// Pages are served as images at known paths; minimal impl returns empty
	return nil, nil
}

func (s *Source) GetImageURL(page source.Page) (string, error) { return page.ImageURL, nil }
func (s *Source) GetFilterList() []source.Filter               { return nil }