Separate UI (#1299)

* Add custom_ui_location to serve UI from filesystem

pkg/api/server.go

@@ -234,9 +234,21 @@ func Start() {
 		})
 	}
 
+	customUILocation := c.GetCustomUILocation()
+
 	// Serve the web app
 	r.HandleFunc("/*", func(w http.ResponseWriter, r *http.Request) {
 		ext := path.Ext(r.URL.Path)
+
+		if customUILocation != "" {
+			if r.URL.Path == "index.html" || ext == "" {
+				r.URL.Path = "/"
+			}
+
+			http.FileServer(http.Dir(customUILocation)).ServeHTTP(w, r)
+			return
+		}
+
 		if ext == ".html" || ext == "" {
 			data, _ := uiBox.Find("index.html")
 			_, _ = w.Write(data)

pkg/manager/config/config.go

@@ -106,6 +106,10 @@ const Language = "language"
 // this should be manually configured only
 const CustomServedFolders = "custom_served_folders"
 
+// UI directory. Overrides to serve the UI from a specific location
+// rather than use the embedded UI.
+const CustomUILocation = "custom_ui_location"
+
 // Interface options
 const MenuItems = "menu_items"
 
@@ -523,6 +527,10 @@ func (i *Instance) GetCustomServedFolders() URLMap {
 	return viper.GetStringMapString(CustomServedFolders)
 }
 
+func (i *Instance) GetCustomUILocation() string {
+	return viper.GetString(CustomUILocation)
+}
+
 // Interface options
 func (i *Instance) GetMenuItems() []string {
 	if viper.IsSet(MenuItems) {

ui/v2.5/src/components/Changelog/versions/v070.md

@@ -1,4 +1,5 @@
 ### ✨ New Features
+* Support serving UI from specific directory location.
 * Added details, death date, hair color, and weight to Performers.
 * Added details to Studios.
 * Added [perceptual dupe checker](/settings?tab=duplicates).

ui/v2.5/src/docs/en/Configuration.md

@@ -115,4 +115,20 @@ These options are typically not exposed in the UI and must be changed manually i
 
 | Field | Remarks |
 |-------|---------|
+| `custom_served_folders` | A map of URLs to file system folders. See below. |
+| `custom_ui_location` | The file system folder where the UI files will be served from, instead of using the embedded UI. Empty to disable. Stash must be restarted to take effect. |
 | `max_upload_size` | Maximum file upload size for import files. Defaults to 1GB. |
+
+### Custom served folders
+
+Custom served folders are served when the server handles a request with the `/custom` URL prefix. The following is an example configuration:
+
+```
+custom_served_folders:
+  /: D:\stash\static
+  /foo: D:\bar
+```
+
+With the above configuration, a request for `/custom/foo/bar.png` would serve `D:\bar\bar.png`. 
+
+The `/` entry matches anything that is not otherwise mapped by the other entries. For example, `/custom/baz/xyz.png` would serve `D:\stash\static\baz\xyz.png`.