chore: add cache for resource

server/resource.go

@@ -3,6 +3,7 @@ package server
 import (
 	"encoding/json"
 	"fmt"
+	"html"
 	"io"
 	"net/http"
 	"strconv"
@@ -168,3 +169,32 @@ func (s *Server) registerResourceRoutes(g *echo.Group) {
 		return c.JSON(http.StatusOK, true)
 	})
 }
+
+func (s *Server) registerResourcePublicRoutes(g *echo.Group) {
+	g.GET("/r/:resourceId/:filename", func(c echo.Context) error {
+		ctx := c.Request().Context()
+		resourceID, err := strconv.Atoi(c.Param("resourceId"))
+		if err != nil {
+			return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("ID is not a number: %s", c.Param("resourceId"))).SetInternal(err)
+		}
+
+		filename := html.UnescapeString(c.Param("filename"))
+		resourceFind := &api.ResourceFind{
+			ID:       &resourceID,
+			Filename: &filename,
+		}
+		resource, err := s.Store.FindResource(ctx, resourceFind)
+		if err != nil {
+			return echo.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Failed to fetch resource ID: %v", resourceID)).SetInternal(err)
+		}
+
+		c.Response().Writer.WriteHeader(http.StatusOK)
+		c.Response().Writer.Header().Set("Content-Type", resource.Type)
+		c.Response().Header().Set(echo.HeaderCacheControl, "max-age=31536000, immutable")
+		if _, err := c.Response().Writer.Write(resource.Blob); err != nil {
+			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to write response").SetInternal(err)
+		}
+
+		return nil
+	})
+}