package web_api

import (
	"context"
	"strconv"

	"git.itzana.me/strafesnet/maps-service/pkg/api"
	"git.itzana.me/strafesnet/maps-service/pkg/roblox"
)

// BatchAssetThumbnails handles batch fetching of asset thumbnails
func (svc *Service) BatchAssetThumbnails(ctx context.Context, req *api.BatchAssetThumbnailsReq) (*api.BatchAssetThumbnailsOK, error) {
	if len(req.AssetIds) == 0 {
		return &api.BatchAssetThumbnailsOK{
			Thumbnails: api.NewOptBatchAssetThumbnailsOKThumbnails(map[string]string{}),
		}, nil
	}

	// Convert size string to enum
	size := roblox.Size420x420
	if req.Size.IsSet() {
		sizeStr := req.Size.Value
		switch api.BatchAssetThumbnailsReqSize(sizeStr) {
		case api.BatchAssetThumbnailsReqSize150x150:
			size = roblox.Size150x150
		case api.BatchAssetThumbnailsReqSize768x432:
			size = roblox.Size768x432
		}
	}

	// Fetch thumbnails from service
	thumbnails, err := svc.inner.GetAssetThumbnails(ctx, req.AssetIds, size)
	if err != nil {
		return nil, err
	}

	// Convert map[uint64]string to map[string]string for JSON
	result := make(map[string]string, len(thumbnails))
	for assetID, url := range thumbnails {
		result[strconv.FormatUint(assetID, 10)] = url
	}

	return &api.BatchAssetThumbnailsOK{
		Thumbnails: api.NewOptBatchAssetThumbnailsOKThumbnails(result),
	}, nil
}

// GetAssetThumbnail handles single asset thumbnail fetch (with redirect)
func (svc *Service) GetAssetThumbnail(ctx context.Context, params api.GetAssetThumbnailParams) (*api.GetAssetThumbnailFound, error) {
	// Convert size string to enum
	size := roblox.Size420x420
	if params.Size.IsSet() {
		sizeStr := params.Size.Value
		switch api.GetAssetThumbnailSize(sizeStr) {
		case api.GetAssetThumbnailSize150x150:
			size = roblox.Size150x150
		case api.GetAssetThumbnailSize768x432:
			size = roblox.Size768x432
		}
	}

	// Fetch thumbnail
	thumbnailURL, err := svc.inner.GetSingleAssetThumbnail(ctx, params.AssetID, size)
	if err != nil {
		return nil, err
	}

	// Return redirect response
	return &api.GetAssetThumbnailFound{
		Location: api.NewOptString(thumbnailURL),
	}, nil
}

// BatchUserThumbnails handles batch fetching of user avatar thumbnails
func (svc *Service) BatchUserThumbnails(ctx context.Context, req *api.BatchUserThumbnailsReq) (*api.BatchUserThumbnailsOK, error) {
	if len(req.UserIds) == 0 {
		return &api.BatchUserThumbnailsOK{
			Thumbnails: api.NewOptBatchUserThumbnailsOKThumbnails(map[string]string{}),
		}, nil
	}

	// Convert size string to enum
	size := roblox.Size150x150
	if req.Size.IsSet() {
		sizeStr := req.Size.Value
		switch api.BatchUserThumbnailsReqSize(sizeStr) {
		case api.BatchUserThumbnailsReqSize420x420:
			size = roblox.Size420x420
		case api.BatchUserThumbnailsReqSize768x432:
			size = roblox.Size768x432
		}
	}

	// Fetch thumbnails from service
	thumbnails, err := svc.inner.GetUserAvatarThumbnails(ctx, req.UserIds, size)
	if err != nil {
		return nil, err
	}

	// Convert map[uint64]string to map[string]string for JSON
	result := make(map[string]string, len(thumbnails))
	for userID, url := range thumbnails {
		result[strconv.FormatUint(userID, 10)] = url
	}

	return &api.BatchUserThumbnailsOK{
		Thumbnails: api.NewOptBatchUserThumbnailsOKThumbnails(result),
	}, nil
}

// GetUserThumbnail handles single user avatar thumbnail fetch (with redirect)
func (svc *Service) GetUserThumbnail(ctx context.Context, params api.GetUserThumbnailParams) (*api.GetUserThumbnailFound, error) {
	// Convert size string to enum
	size := roblox.Size150x150
	if params.Size.IsSet() {
		sizeStr := params.Size.Value
		switch api.GetUserThumbnailSize(sizeStr) {
		case api.GetUserThumbnailSize420x420:
			size = roblox.Size420x420
		case api.GetUserThumbnailSize768x432:
			size = roblox.Size768x432
		}
	}

	// Fetch thumbnail
	thumbnailURL, err := svc.inner.GetSingleUserAvatarThumbnail(ctx, params.UserID, size)
	if err != nil {
		return nil, err
	}

	// Return redirect response
	return &api.GetUserThumbnailFound{
		Location: api.NewOptString(thumbnailURL),
	}, nil
}