package projects

import (
	"context"
	"fmt"
	"github.com/eko/gocache/cache"
	"go.uber.org/zap"
)

type Service struct {
	projectsRepository Repository
	logger             *zap.Logger
	cache              *cache.MetricCache
}

func NewService(logger *zap.Logger, projectsRepository Repository, cache *cache.MetricCache) *Service {
	return &Service{
		logger:             logger,
		projectsRepository: projectsRepository,
		cache:              cache}
}

func (s *Service) CreateProject(ctx context.Context, userId int, name string) (int, error) {
	s.logger.Debug("creating project",
		zap.String("name", name),
		zap.Int("creatorId", userId))

	projectId, err := s.projectsRepository.Create(ctx, NewCreateProject(name, userId))
	if err != nil {
		s.logger.Warn(err.Error())
		return -1, err
	}

	_ = s.cache.Delete(fmt.Sprintf("projects_userId_%d", userId))

	return projectId, nil
}

func (s *Service) Get(ctx context.Context, userId int) ([]*Project, error) {
	s.logger.Debug("getting projects",
		zap.Int("userId", userId))

	loadFunc := func(key interface{}) (interface{}, error) {
		s.logger.Debug("getting projects from repository",
			zap.Int("userId", userId))
		return s.projectsRepository.GetForMemberId(ctx, userId)
	}

	cacheEntry := cache.NewLoadable(
		loadFunc,
		s.cache)

	entry, err := cacheEntry.Get(fmt.Sprintf("projects_userId_%d", userId))
	if err != nil {
		return nil, err
	}

	return entry.([]*Project), nil
}