feat(slack): send direct message

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

@@ -1,5 +1,6 @@
 import findMessage from './find-message';
 import findUserByEmail from './find-user-by-email';
 import sendMessageToChannel from './send-a-message-to-channel';
+import sendDirectMessage from './send-a-direct-message';
 
-export default [findMessage, findUserByEmail, sendMessageToChannel];
+export default [findMessage, findUserByEmail, sendMessageToChannel, sendDirectMessage];

packages/backend/src/apps/slack/actions/send-a-direct-message/index.ts

@@ -0,0 +1,76 @@
+import defineAction from '../../../../helpers/define-action';
+import postMessage from './post-message';
+
+export default defineAction({
+  name: 'Send a direct message',
+  key: 'sendDirectMessage',
+  description: 'Sends a direct message to a user or yourself from the Slackbot.',
+  arguments: [
+    {
+      label: 'To username',
+      key: 'toUsername',
+      type: 'dropdown' as const,
+      required: true,
+      description: 'Pick a user to send the message to.',
+      variables: false,
+      source: {
+        type: 'query',
+        name: 'getDynamicData',
+        arguments: [
+          {
+            name: 'key',
+            value: 'listUsers',
+          },
+        ],
+      },
+    },
+    {
+      label: 'Message text',
+      key: 'message',
+      type: 'string' as const,
+      required: true,
+      description: 'The content of your new message.',
+      variables: true,
+    },
+    {
+      label: 'Send as a bot?',
+      key: 'sendAsBot',
+      type: 'dropdown' as const,
+      required: false,
+      value: false,
+      description:
+        'If you choose no, this message will appear to come from you. Direct messages are always sent by bots.',
+      variables: false,
+      options: [
+        {
+          label: 'Yes',
+          value: true,
+        },
+        {
+          label: 'No',
+          value: false,
+        },
+      ],
+      additionalFields: {
+        type: 'query',
+        name: 'getDynamicFields',
+        arguments: [
+          {
+            name: 'key',
+            value: 'listFieldsAfterSendAsBot',
+          },
+          {
+            name: 'parameters.sendAsBot',
+            value: '{parameters.sendAsBot}',
+          },
+        ],
+      },
+    },
+  ],
+
+  async run($) {
+    const message = await postMessage($);
+
+    return message;
+  },
+});

packages/backend/src/apps/slack/actions/send-a-direct-message/post-message.ts

@@ -0,0 +1,55 @@
+import { IGlobalVariable } from '@automatisch/types';
+import { URL } from 'url';
+
+type TData = {
+  channel: string;
+  text: string;
+  username?: string;
+  icon_url?: string;
+  icon_emoji?: string;
+};
+
+const postMessage = async ($: IGlobalVariable) => {
+  const { parameters } = $.step;
+  const toUsername = parameters.toUsername as string;
+  const text = parameters.message as string;
+  const sendAsBot = parameters.sendAsBot as boolean;
+  const botName = parameters.botName as string;
+  const botIcon = parameters.botIcon as string;
+
+  const data: TData = {
+    channel: toUsername,
+    text,
+  };
+
+  if (sendAsBot) {
+    data.username = botName;
+    try {
+      // challenging the input to check if it is a URL!
+      new URL(botIcon);
+      data.icon_url = botIcon;
+    } catch {
+      data.icon_emoji = botIcon;
+    }
+  }
+
+  const customConfig = {
+    sendAsBot,
+  };
+
+  const response = await $.http.post('/chat.postMessage', data, {
+    additionalProperties: customConfig,
+  });
+
+  if (response.data.ok === false) {
+    throw new Error(JSON.stringify(response.data));
+  }
+
+  const message = {
+    raw: response?.data,
+  };
+
+  $.setActionItem(message);
+};
+
+export default postMessage;