Add signal notifications & apps

Signed-off-by: Hadi <[email protected]>

server-modules/signal-cli-rest-api.nix

@@ -0,0 +1,30 @@
+{lib, ...}: let
+  port = 8080;
+in {
+  options.services.signal-cli-rest-api.url = lib.mkOption {
+    type = lib.types.str;
+    readOnly = true;
+    default = "http://127.0.0.1:${toString port}";
+    description = "URL of the local signal-cli-rest-api instance.";
+  };
+
+  config = {
+    virtualisation.docker.enable = true;
+
+    systemd.tmpfiles.rules = ["d /var/lib/signal-cli-rest-api 0750 root root -"];
+
+    virtualisation.oci-containers = {
+      backend = "docker";
+      containers.signal-cli-rest-api = {
+        image = "bbernhard/signal-cli-rest-api:0.98";
+        # json-rpc keeps one persistent signal-cli daemon instead of spawning
+        # a fresh process per API call; native mode serializes calls behind a
+        # file lock and each spawn takes ~40s, causing timeouts under any
+        # concurrent access (e.g. Home Assistant retries).
+        environment.MODE = "json-rpc";
+        ports = ["127.0.0.1:${toString port}:8080"];
+        volumes = ["/var/lib/signal-cli-rest-api:/home/.local/share/signal-cli"];
+      };
+    };
+  };
+}