package repository

import (
	"context"
	"kontor-api-gin/internal/models"
	"log/slog"

	"gorm.io/gorm"
)

type AuthorRepository struct {
	db *gorm.DB
}

func NewAuthorRepository(db *gorm.DB) *AuthorRepository {
	repo := &AuthorRepository{db: db}
	return repo
}

func (repository *AuthorRepository) FindAll(context context.Context) ([]models.Author, error) {
	var authors []models.Author

	result := repository.db.Find(&authors)
	slog.Info("AuthorRepository#FindAll", "count", result.RowsAffected)

	return authors, nil
}

func (repository *AuthorRepository) Import(dtos models.AuthorDTOList) {
	slog.Info("AuthorRepository#Import")
	for index, dto := range dtos {
		slog.Info("importing", "index", index, "author", dto)
		model := dto.ConvertDTOToModel()
		existing_item := models.Author{ID: dto.ID}
		result_existing := repository.db.First(&existing_item)
		if result_existing.Error != nil {
			slog.Info("check existing id: not found - inserting")
			result := repository.db.Create(&model)
			if result.Error != nil {
				slog.Info("error during import", "error", result.Error.Error())
			}
		} else {
			slog.Info("check existing id: found - updating")
			result := repository.db.Save(&model)
			if result.Error != nil {
				slog.Info("error during updating", "error", result.Error.Error())
			}
		}
	}
}