chore(guilds): migration to rearrange fields

migrations/20170928_redesign_guilds.js

@@ -0,0 +1,97 @@
+var migrationName = '20170928_redesign_guilds.js';
+
+/*
+ * Copy Guild Leader messages to end of Guild descriptions
+ * Copy Guild logos to beginning of Guild descriptions
+ */
+
+var monk = require('monk');
+var connectionString = 'mongodb://localhost:27017/habitrpg?auto_reconnect=true'; // FOR TEST DATABASE
+var dbGroups = monk(connectionString).get('groups', { castIds: false });
+
+function processGroups(lastId) {
+  // specify a query to limit the affected groups (empty for all groups):
+  var query = {
+  };
+
+  var fields = {
+    'description': 1,
+    'logo': 1,
+    'leaderMessage': 1,
+  }
+
+  if (lastId) {
+    query._id = {
+      $gt: lastId
+    }
+  }
+
+  return dbGroups.find(query, {
+    fields: fields,
+    sort: {_id: 1},
+    limit: 250,
+  })
+  .then(updateGroups)
+  .catch(function (err) {
+    console.log(err);
+    return exiting(1, 'ERROR! ' + err);
+  });
+}
+
+var progressCount = 1000;
+var count = 0;
+
+function updateGroups (groups) {
+  if (!groups || groups.length === 0) {
+    console.warn('All appropriate groups found and modified.');
+    displayData();
+    return;
+  }
+
+  var groupPromises = groups.map(updateGroup);
+  var lastGroup = groups[groups.length - 1];
+
+  return Promise.all(groupPromises)
+  .then(function () {
+    processGroups(lastGroup._id);
+  });
+}
+
+function updateGroup (group) {
+  count++;
+
+  var description = group.description;
+
+  if (group.logo) {
+    description = '![Guild Logo](' + group.logo + ')\n\n \n\n' + description;
+  }
+
+  if (group.leaderMessage) {
+    description = description + '\n\n \n\n' + group.leaderMessage;
+  }
+
+  var set = {
+    description: description,
+  };
+
+  if (count % progressCount == 0) console.warn(count + ' ' + group._id);
+
+  return dbGroups.update({_id: group._id}, {$set:set});
+}
+
+function displayData() {
+  console.warn('\n' + count + ' groups processed\n');
+  return exiting(0);
+}
+
+function exiting(code, msg) {
+  code = code || 0; // 0 = success
+  if (code && !msg) { msg = 'ERROR!'; }
+  if (msg) {
+    if (code) { console.error(msg); }
+    else      { console.log(  msg); }
+  }
+  process.exit(code);
+}
+
+module.exports = processGroups;