init

internal/services/tileService.go

@@ -0,0 +1,57 @@
+package services
+
+import (
+	"context"
+	"history-api/internal/repositories"
+
+	"github.com/gofiber/fiber/v3"
+)
+
+type TileService interface {
+	GetMetadata(ctx context.Context) (map[string]string, error)
+	GetTile(ctx context.Context, z, x, y int) ([]byte, map[string]string, error)
+}
+
+type tileService struct {
+	tileRepo repositories.TileRepository
+}
+
+func NewTileService(
+	TileRepo repositories.TileRepository,
+) TileService {
+	return &tileService{
+		tileRepo: TileRepo,
+	}
+}
+
+func (t *tileService) GetMetadata(ctx context.Context) (map[string]string, error) {
+	metaData, err := t.tileRepo.GetMetadata(ctx)
+	if err != nil {
+		return nil, fiber.NewError(fiber.StatusInternalServerError, err.Error())
+	}
+	return metaData, nil
+}
+
+
+func (t *tileService) GetTile(ctx context.Context, z, x, y int) ([]byte, map[string]string, error) {
+	contentType := make(map[string]string)
+
+	data, format, isPBF, err := t.tileRepo.GetTile(ctx, z, x, y)
+	if err != nil {
+		return nil, contentType, fiber.NewError(fiber.StatusInternalServerError, err.Error())
+	}
+	contentType["Content-Type"] = "image/png"
+	if format == "jpg" {
+		contentType["Content-Type"] = "image/jpeg"
+	}
+	if format == "pbf" {
+		contentType["Content-Type"] = "application/x-protobuf"
+	}
+
+	if isPBF {
+		contentType["Content-Encoding"] = "gzip"
+	}
+
+	return data, contentType, nil
+
+}