feat(mattermost): add matterbridge integration to mattermost module

modules/nixos/server/web-apps/mattermost/default.nix

@@ -21,6 +21,7 @@ mkWebApp {
     (mkDir cfg.dataDir)
   ];
   extraOptions = {
+    teamName = mkStrOption;
     configDir = mkStrOption // {
       default = "/etc/mattermost";
     };
@@ -49,6 +50,38 @@ mkWebApp {
       host = "0.0.0.0";
       siteUrl = "https://${cfg.domain}";
     };
+    services.matterbridge = {
+      enable = true;
+      inherit (upstreamCfg) user group;
+      configPath = config.sops.templates."matterbridge-conf".path;
+    };
+    sops.secrets."matterbridge/mattermost-password" = { };
+    sops.templates."matterbridge-conf" = {
+      owner = upstreamCfg.user;
+      content = # toml
+        ''
+          [[gateway]]
+          name="gateway1"
+          enable=true
+
+          [[gateway.inout]]
+          account="mattermost.${config.hostname}"
+          channel="matterbridge"
+
+          [mattermost.${config.hostname}]
+          Server="${cfg.domain}"
+          Team="${cfg.teamName}"
+          Login="matterbridge"
+          Password="${config.sops.placeholder."matterbridge/mattermost-password"}"
+          RemoteNickFormat="[{PROTOCOL}] <{NICK}> "
+          PrefixMessagesWithNick=true
+          PreserveThreading=true
+        '';
+    };
+    services.nginx.virtualHosts.${cfg.domain}.locations."~ /api/v[0-9]+/(users/)?websocket$" = {
+      proxyPass = "http://${config.hostname}:${toString cfg.port}";
+      proxyWebsockets = true;
+    };
     services.postgresql = {
       ensureDatabases = singleton upstreamCfg.database.name;
       ensureUsers = singleton {

secrets/secrets.yaml

@@ -17,6 +17,8 @@ librechat:
     creds_iv: ENC[AES256_GCM,data:fbBD9RsuEHwDETwiYtAS9kBxgTy6zubrxHWpcuoEsR0=,iv:uZcwIfDPPn4XUf8IZkI29VH9CiKvEOlWuUaWgSjl1Kc=,tag:qbgiQU7bWSFjoGEwoptCpg==,type:str]
     jwt_secret: ENC[AES256_GCM,data:ZhDNIXrCaRWWfrlPxpBfnmeUluW0z72KGpQv9mGyf1kCCnfx3V2lPMm6QS6biajC+4oPVfgwqcXc4Lvs8OqU9g==,iv:1Ecj8fh+M5kw8cmVD96U6QgE7fNy9cbQV9v2Q305puc=,tag:U1ZglGWdTH1TGfcIIORMHQ==,type:str]
     jwt_refresh_secret: ENC[AES256_GCM,data:/4X6h51oRRaOg7UZ/zUcS1L8QyFnhsTYrz8D6R3ZP/tFAEMO/IfYJHHQQ8UtgKjAEwIVYcpIco8lUDhm06folw==,iv:02/LgoiMZ6MzBSd+JAi+iuF3dzqsVyqX6gQfWPY8sIc=,tag:5VrCh7ZKNJD3ynjcyQpVyg==,type:str]
+matterbridge:
+    mattermost-password: ENC[AES256_GCM,data:sMk4M2gADl1iPA7XEH1/D3sw,iv:YnTYTo0NVJVLtS/uhaodoCuyDqJf6IKCojKFljKSFCE=,tag:8vEK0RyxopiPUcML6hwqpg==,type:str]
 sops:
     age:
         - recipient: age12l33pas8eptwjc7ewux3d8snyzfzwz0tn9qg5kw8le79fswmjgjqdjgyy6
@@ -28,7 +30,7 @@ sops:
             WXFKbjNMWDF0LzNyekJJMGFva2diemcKQTc8ODuK6IWqRhulHiCF92aU+3p23riY
             M94Nzh+VT6QTFOgb3J7bBJMLhRH/fkQb6L6ia2n9QrVXFyYYMJ0oBw==
             -----END AGE ENCRYPTED FILE-----
-    lastmodified: "2025-06-17T02:15:21Z"
-    mac: ENC[AES256_GCM,data:rFjFrXeRo5sMGQBR1UjLhJOGs0K/GVhKjhrbnyDq5JiUZRKnDns5JJfhBTwCZXcFXg8shDgj6P+vox+4Tl8PhadWV+s9OZVulvGGahZF39Msb7au7p+S77xVFw35QSB/d9LLEncO2WRyIm8tds18eJ8z3PBvGoad3DGcuLkYdlU=,iv:lUItY1Drr2e1rWLUw8JwdA42UVF1KZL+YMXZRSBIWtU=,tag:esr6v/lkHPcSkY/CP4g88Q==,type:str]
+    lastmodified: "2025-06-17T19:11:07Z"
+    mac: ENC[AES256_GCM,data:EVDPzk2P284ULwMx/hCQeP4eehIiqx5OxhNDc17KhjRv19iPUjzhX7/SQy+r34ZfiKSFnB2W3zmhl6JtGqme10v4xZDT+D5wBLrYU7h4ylht65iDo0Eaw38TNLXPNqfNlKWqTcpgvMpez26CdL/7v3bUKU0aLYX0HkVxl2CQt5g=,iv:gujsDVgpH7RajOliQxL7Unkm24Xqp7BEeYtUMyXq2oc=,tag:KdKXPJ4cF2myFe4vJ1/YnQ==,type:str]
     unencrypted_suffix: _unencrypted
     version: 3.10.2