Support .well-known on Dimension

config/default.yaml

@@ -85,6 +85,11 @@ stickers:
   # The sticker manager URL to promote
   managerUrl: "https://stickers.t2bot.io"
 
+# Settings for how Dimension is represented to the public
+dimension:
+  # This is where Dimension is accessible from clients. Be sure to set this
+  # to your own Dimension instance.
+  publicUrl: "https://dimension.example.org"
 
 # Settings for controlling how logging works
 logging:

src/api/matrix/MatrixWellknownService.ts

@@ -0,0 +1,42 @@
+import { GET, Path } from "typescript-rest";
+import { AutoWired } from "typescript-ioc/es6";
+import {URL} from "url";
+import config from "../../config";
+
+interface WellknownResponse {
+    "m.integrations_widget": {
+        url: string;
+        data: {
+            api_url: string;
+        };
+    };
+}
+
+/**
+ * Serving of the .well-known file
+ */
+@Path("/.well-known/matrix")
+@AutoWired
+export class MatrixWellknownService {
+
+    @GET
+    @Path("integrations")
+    public async getIntegrations(): Promise<WellknownResponse> {
+        const parsed = new URL(config.dimension.publicUrl);
+
+        parsed.pathname = '/riot';
+        const uiUrl = parsed.toString();
+
+        parsed.pathname = '/api/v1/scalar';
+        const apiUrl = parsed.toString();
+
+        return {
+            "m.integrations_widget": {
+                url: uiUrl,
+                data: {
+                    api_url: apiUrl,
+                },
+            },
+        };
+    }
+}

src/config.ts

@@ -32,6 +32,9 @@ export interface DimensionConfig {
         stickerBot: string;
         managerUrl: string;
     };
+    dimension: {
+        publicUrl: string;
+    };
     logging: LogConfig;
 }
 

webpack.config.js

@@ -147,6 +147,10 @@ module.exports = function () {
                 target: 'http://localhost:8184',
                 secure: false
             },
+            '/.well-known': {
+                target: 'http://localhost:8184',
+                secure: false
+            },
         }
     };