package discovery

import (
	"context"
	"furtuna-be/config"

	"furtuna-be/internal/entity"
	"furtuna-be/internal/repository"
)

const (
	defaultLatitude  = -6.2088
	defaultLongitude = 106.8456
	radius           = 10000
)

type DiscoveryService struct {
	repo repository.SiteRepository
	cfg  config.Discovery
}

func NewDiscoveryService(repo repository.SiteRepository, cfg config.Discovery) *DiscoveryService {
	return &DiscoveryService{
		repo: repo,
		cfg:  cfg,
	}
}

func (s *DiscoveryService) Home(ctx context.Context, search *entity.DiscoverySearch) (*entity.DiscoverySearchResp, error) {
	if search.Lat == 0 || search.Long == 0 {
		search.Lat = defaultLatitude
		search.Long = defaultLongitude
	}

	siteProducts, err := s.repo.GetNearestSites(ctx, search.Lat, search.Long, radius)
	if err != nil {
		return nil, err
	}
	exploreDestinations := []entity.ExploreDestination{}
	for _, exploreDestination := range s.cfg.ExploreDestinations {
		exploreDestinations = append(exploreDestinations, entity.ExploreDestination{
			Name:     exploreDestination.Name,
			ImageURL: exploreDestination.ImageURL,
		})
	}

	exploreRegions := []entity.ExploreRegion{}
	for _, exploreRegion := range s.cfg.ExploreRegions {
		exploreRegions = append(exploreRegions, entity.ExploreRegion{
			Name: exploreRegion.Name,
		})
	}

	mustVisits := []entity.MustVisit{}

	for _, siteProduct := range siteProducts {
		mustVisits = append(mustVisits, entity.MustVisit{
			Name:     siteProduct.SiteName,
			Price:    siteProduct.ProductPrice,
			Region:   siteProduct.Region,
			SiteID:   siteProduct.SiteID,
			ImageURL: siteProduct.Image,
		})
	}

	response := &entity.DiscoverySearchResp{
		ExploreRegions:      exploreRegions,
		ExploreDestinations: exploreDestinations,
		MustVisit:           mustVisits,
	}

	return response, nil
}

func (s *DiscoveryService) Search(ctx context.Context, search *entity.DiscoverySearch) (*entity.DiscoverySearchResp, int64, error) {
	if search.Lat == 0 || search.Long == 0 {
		search.Lat = defaultLatitude
		search.Long = defaultLongitude
		search.Radius = radius
	}

	siteProducts, total, err := s.repo.SearchSites(ctx, search)
	if err != nil {
		return nil, 0, err
	}
	exploreDestinations := []entity.ExploreDestination{}
	for _, exploreDestination := range s.cfg.ExploreDestinations {
		exploreDestinations = append(exploreDestinations, entity.ExploreDestination{
			Name:     exploreDestination.Name,
			ImageURL: exploreDestination.ImageURL,
		})
	}

	exploreRegions := []entity.ExploreRegion{}
	for _, exploreRegion := range s.cfg.ExploreRegions {
		exploreRegions = append(exploreRegions, entity.ExploreRegion{
			Name: exploreRegion.Name,
		})
	}

	mustVisits := []entity.MustVisit{}

	for _, siteProduct := range siteProducts {
		mustVisits = append(mustVisits, entity.MustVisit{
			Name:     siteProduct.SiteName,
			Price:    siteProduct.ProductPrice,
			Region:   siteProduct.Region,
			SiteID:   siteProduct.SiteID,
			ImageURL: siteProduct.Image,
			Regency:  siteProduct.Regency,
		})
	}

	response := &entity.DiscoverySearchResp{
		ExploreRegions:      exploreRegions,
		ExploreDestinations: exploreDestinations,
		MustVisit:           mustVisits,
	}

	return response, total, nil
}