Added the default newsletter (#14468)

refs https://github.com/TryGhost/Team/issues/1473

- Added the default newsletter
- We use the title to populate the newsletter same, slug and sender name
- We use the description to populate the newsletter description
- We use the global design settings to populate the corresponding newsletter design settings

Co-authored-by: Matt Hanley <git@matthanley.co.uk>

core/server/data/migrations/versions/4.46/2022-04-13-13-00-add-default-newsletter.js

@@ -0,0 +1,83 @@
+const ObjectId = require('bson-objectid');
+const logging = require('@tryghost/logging');
+const startsWith = require('lodash/startsWith');
+const {createTransactionalMigration} = require('../../utils');
+
+// This uses the default settings from core/server/data/schema/default-settings/default-settings.json
+const newsletter = {
+    id: (new ObjectId()).toHexString(),
+    name: 'Ghost',
+    description: '',
+    slug: 'default-newsletter',
+    sender_name: null,
+    sender_email: null,
+    sender_reply_to: 'newsletter',
+    status: 'active',
+    visibility: 'members',
+    subscribe_on_signup: true,
+    sort_order: 0,
+    body_font_category: 'sans_serif',
+    footer_content: '',
+    header_image: null,
+    show_badge: true,
+    show_feature_image: true,
+    show_header_icon: true,
+    show_header_title: true,
+    show_header_name: false,
+    title_alignment: 'center',
+    title_font_category: 'sans_serif'
+};
+
+module.exports = createTransactionalMigration(
+    async function up(knex) {
+        // Make sure the newsletter table is empty
+        const newsletters = await knex('newsletters').count('*', {as: 'total'});
+
+        if (newsletters[0].total !== 0) {
+            logging.info('Skipping adding the default newsletter - There is already at least one newsletter');
+            return;
+        }
+
+        // Get all settings in one query
+        const settings = await knex('settings')
+            .whereIn('key', [
+                'title',
+                'description',
+                'newsletter_body_font_category',
+                'newsletter_footer_content',
+                'newsletter_header_image',
+                'newsletter_show_badge',
+                'newsletter_show_feature_image',
+                'newsletter_show_header_icon',
+                'newsletter_show_header_title',
+                'newsletter_title_alignment',
+                'newsletter_title_font_category'
+            ])
+            .select(['key', 'value']);
+
+        // eslint-disable-next-line no-restricted-syntax
+        for (let {key, value} of settings) {
+            // Use site title for the newsletter name
+            if (key === 'title') {
+                key = 'name';
+            }
+            // Settings have a `newsletter_` prefix which isn't present on the newsletters table
+            if (startsWith(key, 'newsletter_')) {
+                key = key.slice(11);
+            }
+            if (typeof newsletter[key] === 'boolean') {
+                newsletter[key] = value === 'true';
+            } else {
+                newsletter[key] = value;
+            }
+        }
+
+        logging.info('Adding the default newsletter');
+        await knex('newsletters').insert(newsletter);
+    },
+    async function down() {
+        // Noop because we don't want to reset the default newsletter values
+        logging.info(`Skipping newsletter design settings backfill rollback - not needed`);
+        return Promise.resolve();
+    }
+);