feat(discord): add send message to channel action

packages/backend/src/apps/discord/actions/index.ts

@@ -1 +1,5 @@
-export default [];
+import sendMessageToChannel from "./send-message-to-channel";
+
+export default [
+  sendMessageToChannel
+];

packages/backend/src/apps/discord/actions/send-message-to-channel/index.ts

@@ -0,0 +1,58 @@
+import defineAction from '../../../../helpers/define-action';
+
+export default defineAction({
+  name: 'Send a message to channel',
+  key: 'sendMessageToChannel',
+  description: 'Send a message to a specific channel you specify.',
+  substeps: [
+    {
+      key: 'chooseConnection',
+      name: 'Choose connection',
+    },
+    {
+      key: 'chooseAction',
+      name: 'Set up action',
+      arguments: [
+        {
+          label: 'Channel',
+          key: 'channel',
+          type: 'dropdown' as const,
+          required: true,
+          description: 'Pick a channel to send the message to.',
+          variables: false,
+          source: {
+            type: 'query',
+            name: 'getData',
+            arguments: [
+              {
+                name: 'key',
+                value: 'listChannels',
+              },
+            ],
+          },
+        },
+        {
+          label: 'Message text',
+          key: 'message',
+          type: 'string' as const,
+          required: true,
+          description: 'The content of your new message.',
+          variables: true,
+        }
+      ],
+    },
+    {
+      key: 'testStep',
+      name: 'Test action',
+    },
+  ],
+
+  async run($) {
+    const data = {
+      content: $.step.parameters.message as string,
+    };
+    const response = await $.http?.post(`/channels/${$.step.parameters.channel}/messages`, data);
+
+    $.setActionItem({ raw: response.data });
+  },
+});