move everything into own nix files

webhook.nix

@@ -1,42 +1,14 @@
-{ pkgs }:
+{
+  writeShellApplication,
+  webhook,
+  pigeon-hooks
+}:
 
-let
-  hooks = pkgs.writeText "pigeon-hooks.json" (builtins.toJSON [{
-    id = "release";
-    execute-command = "{./pigeon.sh}";
-    include-command-output-in-response = false;
-    pass-arguments-to-command = [
-      { source = "payload"; name = "project.git_http_url"; }
-      { source = "payload"; name = "project.id"; }
-      { source = "payload"; name = "tag"; }
-      { source = "payload"; name = "commit.id"; }
-    ];
-    trigger-rule.and = [
-      {
-        match = {
-          type = "value";
-          parameter = { source = "header"; name = "X-Gitlab-Event"; };
-          value = "Release Hook";
-        };
-        match = {
-          type = "value";
-          parameter = { source = "payload"; name = "action"; };
-          value = "create";
-        };
-        match = {
-          type = "value";
-          parameter = { source = "header"; name = "X-Gitlab-Token"; };
-          value = "{{ getenv `PIGEON_GITLAB_TOKEN` | js }}";
-        };
-      }
-    ];
-  }]);
-in
-  pkgs.writeShellApplication {
-    name = "pigeon";
-    runtimeInputs = [ pkgs.webhook ];
-    text = ''
-      : ''${PIGEON_GITLAB_TOKEN:?}
-      exec webhook -hooks ${hooks} -template -port "''${PIGEON_PORT:-9000}" -verbose
-    '';
-  }
+writeShellApplication {
+  name = "pigeon-webhook";
+  runtimeInputs = [ webhook ];
+  text = ''
+    : "''${PIGEON_GITLAB_SECRET:?}"
+    exec webhook -hooks ${pigeon-hooks} -template -port "''${PIGEON_PORT:-3000}" -verbose
+  '';
+}