package database

import (
	"fmt"

	"git.tovijaeschke.xyz/tovi/JumboPetstore/models"
	"git.tovijaeschke.xyz/tovi/JumboPetstore/util"
	"gorm.io/gorm/clause"
)

func CreatePet(petData models.Pet) (models.Pet, error) {
	var (
		photoUrl string
		fileName string
		err      error
	)

	err = DB.Omit("PhotoUrlJson").Create(&petData).Error
	if err != nil {
		return petData, err
	}

	for _, photoUrl = range petData.PhotoUrlJson {
		fileName, err = util.DownloadFile(photoUrl)
		if err != nil {
			return petData, err
		}

		petData.PhotoUrls = append(petData.PhotoUrls, models.PetPhoto{
			PetId:    petData.Id,
			FileName: fileName,
		})
	}

	petData, err = UpdatePet(petData)
	if err != nil {
		return petData, err
	}

	return petData, err
}

func UpdatePet(petData models.Pet) (models.Pet, error) {
	var (
		photoUrl string
		err      error
	)

	err = DB.Model(&models.Pet{}).
		Where("id = ?", petData.Id).
		Omit("PhotoUrlJson").
		Updates(&petData).
		Error
	if err != nil {
		return petData, err
	}

	// Delete existing pet photos
	err = DB.Where("pet_id = ?", petData.ID).
		Delete(&models.PetPhoto{}).
		Error
	if err != nil {
		return petData, err
	}

	// Update pet photos from PUT data
	for _, photoUrl = range petData.PhotoUrlJson {
		err = DB.Create(&models.PetPhoto{
			PetId: petData.Id,
			Url:   photoUrl,
		}).Error
		if err != nil {
			return petData, err
		}
	}

	return petData, err
}

func GetPetById(id int) models.Pet {
	var (
		petData   models.Pet
		petPhoto  models.PetPhoto
		photoUrls []string
	)

	DB.Preload(clause.Associations).First(&petData, "id = ?", id)

	for _, petPhoto = range petData.PhotoUrls {
		photoUrls = append(photoUrls, "/images/"+petPhoto.FileName)
	}

	petData.PhotoUrlJson = photoUrls

	fmt.Println(petData)

	return petData
}

func DeletePet(petData models.Pet) {
	DB.Where("pet_id = ?", petData.Id).Delete(&petData.Categories)
	DB.Where("pet_id = ?", petData.Id).Delete(&petData.Tags)
	DB.Where("pet_id = ?", petData.Id).Delete(&petData.PhotoUrls)
	DB.Delete(&petData)
}

func GetPetsByStatus(status string) ([]models.Pet, error) {
	var (
		petDatas  []models.Pet
		petData   models.Pet
		petPhoto  models.PetPhoto
		photoUrls []string
		i         int
		err       error
	)

	err = DB.Where("status = ?", status).Find(&petDatas).Error
	if err != nil {
		return petDatas, err
	}

	for i, petData = range petDatas {
		err = DB.Where("pet_id = ?", petData.Id).Find(&petDatas[i].Tags).Error
		if err != nil {
			return petDatas, err
		}

		err = DB.Where("pet_id = ?", petData.Id).Find(&petDatas[i].PhotoUrls).Error
		if err != nil {
			return petDatas, err
		}

		for _, petPhoto = range petDatas[i].PhotoUrls {
			photoUrls = append(photoUrls, "/images/"+petPhoto.FileName)
		}

		petDatas[i].PhotoUrlJson = photoUrls
	}

	return petDatas, err
}

func AddPhotoToPet(id int, fileName string) error {
	var (
		petData models.Pet
		err     error
	)

	petData = GetPetById(id)

	petData.PhotoUrls = append(petData.PhotoUrls, models.PetPhoto{
		PetId:    id,
		FileName: fileName,
	})
	_, err = UpdatePet(petData)

	return err
}