package repositories

import (
	"context"
	"errors"
	"gorm.io/gorm"
	"tercul/internal/models"
)

// SourceRepository defines CRUD methods specific to Source.
type SourceRepository interface {
	BaseRepository[models.Source]
	ListByWorkID(ctx context.Context, workID uint) ([]models.Source, error)
	FindByURL(ctx context.Context, url string) (*models.Source, error)
}

type sourceRepository struct {
	BaseRepository[models.Source]
	db *gorm.DB
}

// NewSourceRepository creates a new SourceRepository.
func NewSourceRepository(db *gorm.DB) SourceRepository {
	return &sourceRepository{
		BaseRepository: NewBaseRepositoryImpl[models.Source](db),
		db:             db,
	}
}

// ListByWorkID finds sources by work ID
func (r *sourceRepository) ListByWorkID(ctx context.Context, workID uint) ([]models.Source, error) {
	var sources []models.Source
	if err := r.db.WithContext(ctx).Joins("JOIN work_sources ON work_sources.source_id = sources.id").
		Where("work_sources.work_id = ?", workID).
		Find(&sources).Error; err != nil {
		return nil, err
	}
	return sources, nil
}

// FindByURL finds a source by URL
func (r *sourceRepository) FindByURL(ctx context.Context, url string) (*models.Source, error) {
	var source models.Source
	if err := r.db.WithContext(ctx).Where("url = ?", url).First(&source).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, ErrEntityNotFound
		}
		return nil, err
	}
	return &source, nil
}