feat(gmail): add reply to email action

packages/backend/src/apps/gmail/actions/index.js

@@ -1,3 +1,4 @@
+import replyToEmail from './reply-to-email/index.js';
 import sendEmail from './send-email/index.js';
 
-export default [sendEmail];
+export default [replyToEmail, sendEmail];

packages/backend/src/apps/gmail/actions/reply-to-email/index.js

@@ -0,0 +1,228 @@
+import defineAction from '../../../../helpers/define-action.js';
+
+export default defineAction({
+  name: 'Reply to email',
+  key: 'replyToEmail',
+  description: 'Respond to an email.',
+  arguments: [
+    {
+      label: 'Thread',
+      key: 'threadId',
+      type: 'dropdown',
+      required: false,
+      description: '',
+      variables: true,
+      source: {
+        type: 'query',
+        name: 'getDynamicData',
+        arguments: [
+          {
+            name: 'key',
+            value: 'listThreads',
+          },
+        ],
+      },
+    },
+    {
+      label: 'TOs',
+      key: 'tos',
+      type: 'dynamic',
+      required: false,
+      description: 'Who will receive this email?',
+      fields: [
+        {
+          label: 'To',
+          key: 'to',
+          type: 'string',
+          required: false,
+          variables: true,
+        },
+      ],
+    },
+    {
+      label: 'CCs',
+      key: 'ccs',
+      type: 'dynamic',
+      required: false,
+      description:
+        'Who else needs to be included in the CC field of this email?',
+      fields: [
+        {
+          label: 'CC',
+          key: 'cc',
+          type: 'string',
+          required: false,
+          variables: true,
+        },
+      ],
+    },
+    {
+      label: 'BCCs',
+      key: 'bccs',
+      type: 'dynamic',
+      required: false,
+      description:
+        'Who else needs to be included in the BCC field of this email?',
+      fields: [
+        {
+          label: 'BCC',
+          key: 'bcc',
+          type: 'string',
+          required: false,
+          variables: true,
+        },
+      ],
+    },
+    {
+      label: 'From',
+      key: 'from',
+      type: 'dropdown',
+      required: false,
+      description:
+        'Choose an email address or alias from your Gmail Account. This defaults to the primary email address.',
+      variables: true,
+      source: {
+        type: 'query',
+        name: 'getDynamicData',
+        arguments: [
+          {
+            name: 'key',
+            value: 'listEmails',
+          },
+        ],
+      },
+    },
+    {
+      label: 'From Name',
+      key: 'fromName',
+      type: 'string',
+      required: false,
+      description: '',
+      variables: true,
+    },
+    {
+      label: 'Reply To',
+      key: 'replyTo',
+      type: 'string',
+      required: false,
+      description: 'Specify a single reply address other than your own.',
+      variables: true,
+    },
+    {
+      label: 'Body Type',
+      key: 'bodyType',
+      type: 'dropdown',
+      required: false,
+      description: '',
+      variables: true,
+      options: [
+        {
+          label: 'plain',
+          value: 'plain',
+        },
+        {
+          label: 'html',
+          value: 'html',
+        },
+      ],
+    },
+    {
+      label: 'Body',
+      key: 'emailBody',
+      type: 'string',
+      required: true,
+      description: '',
+      variables: true,
+    },
+    {
+      label: 'Label',
+      key: 'labelId',
+      type: 'dropdown',
+      required: false,
+      description: '',
+      variables: true,
+      source: {
+        type: 'query',
+        name: 'getDynamicData',
+        arguments: [
+          {
+            name: 'key',
+            value: 'listLabels',
+          },
+        ],
+      },
+    },
+  ],
+
+  async run($) {
+    const {
+      tos,
+      ccs,
+      bccs,
+      from,
+      fromName,
+      replyTo,
+      threadId,
+      bodyType,
+      emailBody,
+      labelId,
+    } = $.step.parameters;
+    const userId = $.auth.data.userId;
+
+    const allTos = tos?.map((entry) => entry.to);
+    const allCcs = ccs?.map((entry) => entry.cc);
+    const allBccs = bccs?.map((entry) => entry.bcc);
+    const contentType =
+      bodyType === 'html'
+        ? 'text/html; charset="UTF-8"'
+        : 'text/plain; charset="UTF-8"';
+
+    const email =
+      'From: ' +
+      fromName +
+      ' <' +
+      from +
+      '>' +
+      '\r\n' +
+      'In-Reply-To: ' +
+      threadId +
+      '\r\n' +
+      'References: ' +
+      threadId +
+      '\r\n' +
+      'Reply-To: ' +
+      replyTo +
+      '\r\n' +
+      'To: ' +
+      allTos.join(',') +
+      '\r\n' +
+      'Cc: ' +
+      allCcs.join(',') +
+      '\r\n' +
+      'Bcc: ' +
+      allBccs.join(',') +
+      '\r\n' +
+      'Content-Type: ' +
+      contentType +
+      '\r\n' +
+      '\r\n' +
+      emailBody;
+
+    const base64EncodedEmailBody = Buffer.from(email).toString('base64');
+
+    const body = {
+      threadId: threadId,
+      labelIds: [labelId],
+      raw: base64EncodedEmailBody,
+    };
+
+    const { data } = await $.http.post(
+      `/gmail/v1/users/${userId}/messages/send`,
+      body
+    );
+
+    $.setActionItem({
+      raw: data,
+    });
+  },
+});

packages/backend/src/apps/gmail/dynamic-data/index.js

@@ -1,5 +1,6 @@
 import listEmails from './list-emails/index.js';
 import listLabels from './list-labels/index.js';
 import listSignatures from './list-signatures/index.js';
+import listThreads from './list-threads/index.js';
 
-export default [listEmails, listLabels, listSignatures];
+export default [listEmails, listLabels, listSignatures, listThreads];

packages/backend/src/apps/gmail/dynamic-data/list-threads/index.js

@@ -0,0 +1,31 @@
+export default {
+  name: 'List threads',
+  key: 'listThreads',
+
+  async run($) {
+    const threads = {
+      data: [],
+    };
+    const userId = $.auth.data.userId;
+
+    const { data } = await $.http.get(`/gmail/v1/users/${userId}/threads`);
+
+    if (data.threads) {
+      for (const thread of data.threads) {
+        const { data: threadData } = await $.http.get(
+          `/gmail/v1/users/${userId}/threads/${thread.id}`
+        );
+        const subject = threadData.messages[0].payload.headers.find(
+          (header) => header.name === 'Subject'
+        );
+
+        threads.data.push({
+          value: thread.id,
+          name: subject?.value,
+        });
+      }
+    }
+
+    return threads;
+  },
+};

packages/docs/pages/apps/gmail/actions.md

@@ -1,6 +1,8 @@
 ---
 favicon: /favicons/gmail.svg
 items:
+  - name: Reply to email
+    desc: Respond to an email.
   - name: Send email
     desc: Send a new email message.
 ---