bicep/matrix: add module for adding stuff to well-known

hosts/bicep/services/matrix/default.nix

@@ -8,6 +8,7 @@
     ./element.nix
     ./coturn.nix
     ./mjolnir.nix
+    ./well-known.nix
 
     # ./discord.nix
     ./out-of-your-element.nix

hosts/bicep/services/matrix/element.nix

@@ -2,6 +2,13 @@
 let
   synapse-cfg = config.services.matrix-synapse-next;
 in {
+  services.pvv-matrix-well-known.client = {
+    "m.homeserver" = {
+      base_url = "https://matrix.pvv.ntnu.no";
+      server_name = "pvv.ntnu.no";
+    };
+  };
+
   services.nginx.virtualHosts."chat.pvv.ntnu.no" = {
     enableACME = true;
     forceSSL = true;

hosts/bicep/services/matrix/synapse.nix

@@ -132,21 +132,12 @@ in {
 
   services.redis.servers."".enable = true;
 
+  services.pvv-matrix-well-known.server."m.server" = "matrix.pvv.ntnu.no:443";
+
   services.nginx.virtualHosts."matrix.pvv.ntnu.no" = lib.mkMerge [
   {
     kTLS = true;
   }
-  {
-    locations."/.well-known/matrix/server" = {
-      return = ''
-        200 '{"m.server": "matrix.pvv.ntnu.no:443"}'
-      '';
-      extraConfig = ''
-        default_type application/json;
-        add_header Access-Control-Allow-Origin *;
-      '';
-    };
-  }
   {
     locations."/_synapse/admin" = {
       proxyPass = "http://$synapse_backend";

hosts/bicep/services/matrix/well-known.nix

@@ -0,0 +1,44 @@
+{ config, pkgs, lib, ... }:
+let
+  cfg = config.services.pvv-matrix-well-known;
+  format = pkgs.formats.json { };
+  matrixDomain = "matrix.pvv.ntnu.no";
+in
+{
+  options.services.pvv-matrix-well-known = {
+    client = lib.mkOption {
+      type = lib.types.submodule { freeformType = format.type; };
+      default = { };
+      example = {
+        "m.homeserver".base_url = "https://${matrixDomain}/";
+      };
+    };
+
+    server = lib.mkOption {
+      type = lib.types.submodule { freeformType = format.type; };
+      default = { };
+      example = {
+        "m.server" = "https://${matrixDomain}/";
+      };
+    };
+  };
+
+  config = {
+    services.nginx.virtualHosts.${matrixDomain} = {
+      locations."= /.well-known/matrix/client" = lib.mkIf (cfg.client != { }) {
+        alias = format.generate "nginx-well-known-matrix-server.json" cfg.client;
+        extraConfig = ''
+          default_type application/json;
+          add_header Access-Control-Allow-Origin *;
+        '';
+      };
+      locations."= /.well-known/matrix/server" = lib.mkIf (cfg.server != { }) {
+        alias = format.generate "nginx-well-known-matrix-server.json" cfg.server;
+        extraConfig = ''
+          default_type application/json;
+          add_header Access-Control-Allow-Origin *;
+        '';
+      };
+    };
+  };
+}