feat(slack): add find user by email action

packages/backend/src/apps/slack/actions/find-user-by-email/index.ts

@@ -0,0 +1,30 @@
+import defineAction from '../../../../helpers/define-action';
+
+export default defineAction({
+  name: 'Find user by email',
+  key: 'findUserByEmail',
+  description: 'Finds a user by email.',
+  arguments: [
+    {
+      label: 'Email',
+      key: 'email',
+      type: 'string' as const,
+      required: true,
+      variables: true,
+    },
+  ],
+
+  async run($) {
+    const params = {
+      email: $.step.parameters.email as string,
+    };
+
+    const { data } = await $.http.get('/users.lookupByEmail', {
+      params
+    });
+
+    if (data.ok) {
+      $.setActionItem({ raw: data.user });
+    }
+  },
+});

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

@@ -1,4 +1,5 @@
 import findMessage from './find-message';
+import findUserByEmail from './find-user-by-email';
 import sendMessageToChannel from './send-a-message-to-channel';
 
-export default [findMessage, sendMessageToChannel];
+export default [findMessage, findUserByEmail, sendMessageToChannel];