PLT-2600/PLT-2770 Added Get Public Link modal and added new API for public file links (#2892)

* Switched public file links to use a GetLinkModal

* Separated getFile and the new getPublicFile api calls

model/client.go

@@ -993,12 +993,19 @@ func (c *Client) GetFileInfo(url string) (*Result, *AppError) {
 	}
 }
 
-func (c *Client) GetPublicLink(data map[string]string) (*Result, *AppError) {
-	if r, err := c.DoApiPost(c.GetTeamRoute()+"/files/get_public_link", MapToJson(data)); err != nil {
+func (c *Client) GetPublicLink(filename string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/files/get_public_link", MapToJson(map[string]string{"filename": filename})); err != nil {
 		return nil, err
 	} else {
+		var link string
+		if body, err := ioutil.ReadAll(r.Body); err == nil {
+			link = string(body)
+		} else {
+			// all the other Client methods return an empty string on invalid json, so we can too
+		}
+
 		return &Result{r.Header.Get(HEADER_REQUEST_ID),
-			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+			r.Header.Get(HEADER_ETAG_SERVER), link}, nil
 	}
 }