UPDATE: Add raster tiles

internal/controllers/rasterTileController.go

@@ -0,0 +1,113 @@
+package controllers
+
+import (
+	"context"
+	"fmt"
+	"history-api/internal/dtos/response"
+	"history-api/internal/services"
+	"strconv"
+	"time"
+
+	"github.com/gofiber/fiber/v3"
+)
+
+type RasterTileController struct {
+	service services.RasterTileService
+}
+
+func NewRasterTileController(svc services.RasterTileService) *RasterTileController {
+	return &RasterTileController{service: svc}
+}
+
+// GetMetadata godoc
+// @Summary Get raster tile metadata
+// @Description Retrieve map metadata
+// @Tags Tile
+// @Accept json
+// @Produce json
+// @Success 200 {object} response.CommonResponse
+// @Failure 500 {object} response.CommonResponse
+// @Router /raster-tiles/metadata [get]
+func (h *RasterTileController) GetMetadata(c fiber.Ctx) error {
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	res, err := h.service.GetMetadata(ctx)
+	if err != nil {
+		return c.Status(fiber.StatusInternalServerError).JSON(response.CommonResponse{
+			Status:  false,
+			Message: err.Error(),
+		})
+	}
+
+	return c.Status(fiber.StatusOK).JSON(response.CommonResponse{
+		Status: true,
+		Data:   res,
+	})
+}
+
+// GetTile godoc
+// @Summary Get a map raster tile
+// @Description Fetch vector or raster map tile data by Z, X, Y coordinates
+// @Tags Tile
+// @Produce application/octet-stream
+// @Param z path int true "Zoom level (0-22)"
+// @Param x path int true "X coordinate"
+// @Param y path int true "Y coordinate"
+// @Success 200 {file} byte
+// @Failure 400 {object} response.CommonResponse
+// @Failure 500 {object} response.CommonResponse
+// @Router /raster-tiles/{z}/{x}/{y} [get]
+func (h *RasterTileController) GetTile(c fiber.Ctx) error {
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	z, x, y, err := h.parseTileParams(c)
+	if err != nil {
+		return c.Status(fiber.StatusBadRequest).JSON(response.CommonResponse{
+			Status:  false,
+			Message: err.Error(),
+		})
+	}
+
+	data, headers, err := h.service.GetTile(ctx, z, x, y)
+	if err != nil {
+		return c.Status(fiber.StatusInternalServerError).JSON(response.CommonResponse{
+			Status:  false,
+			Message: err.Error(),
+		})
+	}
+
+	for k, v := range headers {
+		c.Set(k, v)
+	}
+
+	return c.Status(fiber.StatusOK).Send(data)
+}
+
+func (h *RasterTileController) parseTileParams(c fiber.Ctx) (int, int, int, error) {
+	z, err := strconv.Atoi(c.Params("z"))
+	if err != nil {
+		return 0, 0, 0, fmt.Errorf("invalid z")
+	}
+
+	x, err := strconv.Atoi(c.Params("x"))
+	if err != nil {
+		return 0, 0, 0, fmt.Errorf("invalid x")
+	}
+
+	y, err := strconv.Atoi(c.Params("y"))
+	if err != nil {
+		return 0, 0, 0, fmt.Errorf("invalid y")
+	}
+
+	if z < 0 || x < 0 || y < 0 {
+		return 0, 0, 0, fmt.Errorf("coordinates must be positive")
+	}
+
+	if z > 22 {
+		return 0, 0, 0, fmt.Errorf("zoom level too large")
+	}
+
+	return z, x, y, nil
+}

internal/repositories/rasterTileRepository.go

@@ -0,0 +1,99 @@
+package repositories
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"history-api/pkg/cache"
+	"history-api/pkg/constants"
+	"time"
+)
+
+type RasterTileRepository interface {
+	GetMetadata(ctx context.Context) (map[string]string, error)
+	GetTile(ctx context.Context, z, x, y int) ([]byte, string, error)
+}
+
+type rasterTileRepository struct {
+	db *sql.DB
+	c  cache.Cache
+}
+
+func NewRasterTileRepository(db *sql.DB, c cache.Cache) RasterTileRepository {
+	return &rasterTileRepository{
+		db: db,
+		c:  c,
+	}
+}
+
+func (r *rasterTileRepository) GetMetadata(ctx context.Context) (map[string]string, error) {
+	cacheId := "rasterTile:metadata"
+
+	var cached map[string]string
+	err := r.c.Get(ctx, cacheId, &cached)
+	if err == nil {
+		return cached, nil
+	}
+
+	rows, err := r.db.QueryContext(ctx, "SELECT name, value FROM metadata")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	metadata := make(map[string]string)
+
+	for rows.Next() {
+		var name, value string
+		if err := rows.Scan(&name, &value); err != nil {
+			return nil, err
+		}
+		metadata[name] = value
+	}
+
+	_ = r.c.Set(ctx, cacheId, metadata, constants.NormalCacheDuration)
+
+	return metadata, nil
+}
+
+func (r *rasterTileRepository) GetTile(ctx context.Context, z, x, y int) ([]byte, string, error) {
+	if z < 0 || x < 0 || y < 0 {
+		return nil, "", fmt.Errorf("invalid tile coordinates")
+	}
+
+	// cache key
+	cacheId := fmt.Sprintf("rasterTile:%d:%d:%d", z, x, y)
+
+	var cached []byte
+	err := r.c.Get(ctx, cacheId, &cached)
+	if err == nil {
+		meta, _ := r.GetMetadata(ctx)
+		return cached, meta["format"], nil
+	}
+
+	// XYZ -> TMS
+	tmsY := (1 << z) - 1 - y
+
+	var tileData []byte
+
+	err = r.db.QueryRowContext(ctx, `
+        SELECT tile_data
+        FROM tiles
+        WHERE zoom_level = ?
+          AND tile_column = ?
+          AND tile_row = ?
+    `, z, x, tmsY).Scan(&tileData)
+
+	if err != nil {
+		return nil, "", err
+	}
+
+	meta, err := r.GetMetadata(ctx)
+	if err != nil {
+		return nil, "", err
+	}
+
+	_ = r.c.Set(ctx, cacheId, tileData, 5*time.Minute)
+
+	return tileData, meta["format"], nil
+}

internal/repositories/tileRepository.go

@@ -27,7 +27,7 @@ func NewTileRepository(db *sql.DB, c cache.Cache) TileRepository {
 }
 
 func (r *tileRepository) GetMetadata(ctx context.Context) (map[string]string, error) {
-	cacheId := "mbtiles:metadata"
+	cacheId := "tile:metadata"
 
 	var cached map[string]string
 	err := r.c.Get(ctx, cacheId, &cached)

internal/routes/rasterTileRoute.go

@@ -0,0 +1,13 @@
+package routes
+
+import (
+	"history-api/internal/controllers"
+
+	"github.com/gofiber/fiber/v3"
+)
+
+func RasterTileRoutes(app *fiber.App, controller *controllers.RasterTileController) {
+	route := app.Group("/raster-tiles")
+	route.Get("/metadata", controller.GetMetadata)
+	route.Get("/:z/:x/:y", controller.GetTile)
+}

internal/services/rasterTileService.go

@@ -0,0 +1,57 @@
+package services
+
+import (
+	"context"
+	"history-api/internal/repositories"
+
+	"github.com/gofiber/fiber/v3"
+)
+
+type RasterTileService interface {
+	GetMetadata(ctx context.Context) (map[string]string, error)
+	GetTile(ctx context.Context, z, x, y int) ([]byte, map[string]string, error)
+}
+
+type rasterTileService struct {
+	tileRepo repositories.RasterTileRepository
+}
+
+func NewRasterTileService(
+	TileRepo repositories.RasterTileRepository,
+) RasterTileService {
+	return &rasterTileService{
+		tileRepo: TileRepo,
+	}
+}
+
+func (t *rasterTileService) 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 *rasterTileService) GetTile(ctx context.Context, z, x, y int) ([]byte, map[string]string, error) {
+	contentType := make(map[string]string)
+
+	data, format, err := t.tileRepo.GetTile(ctx, z, x, y)
+	if err != nil {
+		return nil, contentType, fiber.NewError(fiber.StatusInternalServerError, err.Error())
+	}
+	
+	switch format {
+	case "png":
+		contentType["Content-Type"] = "image/png"
+	case "jpg", "jpeg":
+		contentType["Content-Type"] = "image/jpeg"
+	case "webp":
+		contentType["Content-Type"] = "image/webp"
+	default:
+		contentType["Content-Type"] = "application/octet-stream"
+	}
+
+	return data, contentType, nil
+
+}

internal/services/tileService.go

@@ -40,12 +40,15 @@ func (t *tileService) GetTile(ctx context.Context, z, x, y int) ([]byte, map[str
 	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" {
+	switch format {
+	case "pbf":
 		contentType["Content-Type"] = "application/x-protobuf"
+	case "png":
+		contentType["Content-Type"] = "image/png"
+	case "jpg", "jpeg":
+		contentType["Content-Type"] = "image/jpeg"
+	default:
+		contentType["Content-Type"] = "application/octet-stream"
 	}
 
 	if isPBF {