package fake

import (
	"encoding/json"
	"errors"
	uuid "github.com/satori/go.uuid"
	"hamster-tycoon/storage/dao"
	"hamster-tycoon/storage/model"
	"hamster-tycoon/utils"
)

const (
	cacheKeyHamsters = "hamsters"
)

func (db *DatabaseFake) saveHamsters(hamsters []*model.Hamster) {
	data := make([]interface{}, 0)
	for _, v := range hamsters {
		data = append(data, v)
	}
	db.save(cacheKeyHamsters, data)
}

func (db *DatabaseFake) loadHamsters() []*model.Hamster {
	hamsters := make([]*model.Hamster, 0)
	b, err := db.Cache.Get(cacheKeyHamsters)
	if err != nil {
		return hamsters
	}
	err = json.Unmarshal(b, &hamsters)
	if err != nil {
		utils.GetLogger().WithError(err).Error("Error while unmarshal fake users")
	}
	return hamsters
}

func (db *DatabaseFake) GetAllHamsters(gameID, cageID string) ([]*model.Hamster, error) {
	hamsters := db.loadHamsters()
	var hamsterFound []*model.Hamster
	for _, g := range hamsters {
		if g.Cage.ID == cageID && g.Cage.Game.ID == gameID {
			hamsterFound = append(hamsterFound, g)
		}
	}
	return hamsterFound, nil
}

func (db *DatabaseFake) GetHamsterByID(hamsterID, gameID, cageID string) (*model.Hamster, error) {
	hamsters := db.loadHamsters()
	for _, g := range hamsters {
		if g.ID == hamsterID && g.Cage.ID == cageID && g.Cage.Game.ID == gameID {
			return g, nil
		}
	}
	return nil, dao.NewDAOError(dao.ErrTypeNotFound, errors.New("hamster not found"))
}

func (db *DatabaseFake) CreateHamster(hamster *model.Hamster) error {
	hamster.ID = uuid.NewV4().String()

	hamsters := db.loadHamsters()
	hamsters = append(hamsters, hamster)
	db.saveHamsters(hamsters)
	return nil
}

func (db *DatabaseFake) DeleteHamster(string) error {
	return nil
}

func (db *DatabaseFake) UpdateHamster(*model.Hamster) error {
	return nil
}