feat: migrate watchlist module to modular domain pattern

internal/watchlist/service/service.go

@@ -0,0 +1,67 @@
+package service
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"mal/integrations/jikan"
+	"mal/internal/db"
+	"mal/internal/domain"
+)
+
+type watchlistService struct {
+	repo  domain.WatchlistRepository
+	jikan *jikan.Client
+}
+
+func NewWatchlistService(repo domain.WatchlistRepository, jikan *jikan.Client) domain.WatchlistService {
+	return &watchlistService{repo: repo, jikan: jikan}
+}
+
+func (s *watchlistService) UpdateEntry(ctx context.Context, userID string, animeID int64, status string) error {
+	_, err := s.repo.GetAnime(ctx, animeID)
+	if err != nil {
+		anime, err := s.jikan.GetAnimeByID(ctx, int(animeID))
+		if err == nil {
+			_, _ = s.repo.UpsertAnime(ctx, db.UpsertAnimeParams{
+				ID:            int64(anime.MalID),
+				TitleOriginal: anime.Title,
+				TitleEnglish:  sql.NullString{String: anime.TitleEnglish, Valid: anime.TitleEnglish != ""},
+				TitleJapanese: sql.NullString{String: anime.TitleJapanese, Valid: anime.TitleJapanese != ""},
+				ImageUrl:      anime.ImageURL(),
+				Airing:        sql.NullBool{Bool: anime.Airing, Valid: true},
+			})
+		}
+	}
+
+	_, err = s.repo.UpsertWatchListEntry(ctx, db.UpsertWatchListEntryParams{
+		UserID:  userID,
+		AnimeID: animeID,
+		Status:  status,
+	})
+	return err
+}
+
+func (s *watchlistService) RemoveEntry(ctx context.Context, userID string, animeID int64) error {
+	return s.repo.DeleteWatchListEntry(ctx, db.DeleteWatchListEntryParams{
+		UserID:  userID,
+		AnimeID: animeID,
+	})
+}
+
+func (s *watchlistService) GetWatchlist(ctx context.Context, userID string) ([]domain.UserWatchListRow, error) {
+	return s.repo.GetUserWatchList(ctx, userID)
+}
+
+func (s *watchlistService) DeleteContinueWatching(ctx context.Context, userID string, animeID int64) error {
+	_ = s.repo.DeleteContinueWatchingEntry(ctx, db.DeleteContinueWatchingEntryParams{
+		UserID:  userID,
+		AnimeID: animeID,
+	})
+	return s.repo.SaveWatchProgress(ctx, db.SaveWatchProgressParams{
+		UserID:             userID,
+		AnimeID:            animeID,
+		CurrentEpisode:     sql.NullInt64{Valid: false},
+		CurrentTimeSeconds: 0,
+	})
+}