support showing geolocation on map

pkg/api/map_image_proxies.go

@@ -0,0 +1,41 @@
+package api
+
+import (
+	"fmt"
+	"net/http"
+	"net/http/httputil"
+	"net/url"
+
+	"github.com/mayswind/ezbookkeeping/pkg/core"
+	"github.com/mayswind/ezbookkeeping/pkg/errs"
+)
+
+const openStreetMapTileImageUrlFormat = "https://tile.openstreetmap.org/%s/%s/%s" // https://tile.openstreetmap.org/{z}/{x}/{y}.png
+
+// MapImageProxy represents map image proxy
+type MapImageProxy struct {
+}
+
+// Initialize a map image proxy singleton instance
+var (
+	MapImages = &MapImageProxy{}
+)
+
+// OpenStreetMapTileImageProxyHandler returns open street map tile image
+func (p *MapImageProxy) OpenStreetMapTileImageProxyHandler(c *core.Context) (*httputil.ReverseProxy, *errs.Error) {
+	director := func(req *http.Request) {
+		zoomLevel := c.Param("zoomLevel")
+		coordinateX := c.Param("coordinateX")
+		fileName := c.Param("fileName")
+
+		imageRawUrl := fmt.Sprintf(openStreetMapTileImageUrlFormat, zoomLevel, coordinateX, fileName)
+		imageUrl, _ := url.Parse(imageRawUrl)
+
+		req.Header.Del("Authorization")
+		req.URL = imageUrl
+		req.RequestURI = req.URL.RequestURI()
+		req.Host = imageUrl.Host
+	}
+
+	return &httputil.ReverseProxy{Director: director}, nil
+}

pkg/core/handler.go

@@ -1,6 +1,10 @@
 package core
 
-import "github.com/mayswind/ezbookkeeping/pkg/errs"
+import (
+	"net/http/httputil"
+
+	"github.com/mayswind/ezbookkeeping/pkg/errs"
+)
 
 // MiddlewareHandlerFunc represents the middleware handler function
 type MiddlewareHandlerFunc func(*Context)
@@ -10,3 +14,6 @@ type ApiHandlerFunc func(*Context) (interface{}, *errs.Error)
 
 // DataHandlerFunc represents the handler function that returns byte array
 type DataHandlerFunc func(*Context) ([]byte, string, *errs.Error)
+
+// ProxyHandlerFunc represents the reverse proxy handler function
+type ProxyHandlerFunc func(*Context) (*httputil.ReverseProxy, *errs.Error)

pkg/middlewares/authorization.go

@@ -37,6 +37,21 @@ func JWTAuthorization(c *core.Context) {
 	c.Next()
 }
 
+// JWTAuthorizationByQueryString verifies whether current request is valid by jwt token
+func JWTAuthorizationByQueryString(c *core.Context) {
+	token, exists := c.GetQuery(tokenQueryStringParam)
+
+	if !exists {
+		log.WarnfWithRequestId(c, "[authorization.JWTAuthorizationByQueryString] no token provided")
+		utils.PrintJsonErrorResult(c, errs.ErrUnauthorizedAccess)
+		return
+	}
+
+	c.Request.Header.Set("Authorization", token)
+
+	JWTAuthorization(c)
+}
+
 // JWTTwoFactorAuthorization verifies whether current request is valid by 2fa passcode
 func JWTTwoFactorAuthorization(c *core.Context) {
 	claims, err := getTokenClaims(c)