refactor: split modules and harden scraping workflows

internal/repository/library_repository.go

@@ -0,0 +1,44 @@
+package repository
+
+import (
+	"context"
+	"errors"
+
+	"gorm.io/gorm"
+
+	"github.com/ShukeBta/MediaStationGo/internal/model"
+)
+
+// LibraryRepository persists model.Library records.
+type LibraryRepository struct{ db *gorm.DB }
+
+// Create persists a new library row.
+func (r *LibraryRepository) Create(ctx context.Context, l *model.Library) error {
+	return r.db.WithContext(ctx).Create(l).Error
+}
+
+// List returns all enabled+disabled libraries.
+func (r *LibraryRepository) List(ctx context.Context) ([]model.Library, error) {
+	var ls []model.Library
+	err := r.db.WithContext(ctx).Order("created_at asc").Find(&ls).Error
+	return ls, err
+}
+
+// FindByID returns the library, or (nil, nil) when missing.
+func (r *LibraryRepository) FindByID(ctx context.Context, id string) (*model.Library, error) {
+	var l model.Library
+	err := r.db.WithContext(ctx).Where("id = ?", id).First(&l).Error
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, err
+	}
+	return &l, nil
+}
+
+// Delete removes a library and (soft) cascades to its media via repository
+// callers; we do not run CASCADE here to keep this method narrow.
+func (r *LibraryRepository) Delete(ctx context.Context, id string) error {
+	return r.db.WithContext(ctx).Delete(&model.Library{}, "id = ?", id).Error
+}