User settings (#1337)

* user settings bruh

* remove development dump

* emit stuff

* i am so done

* Update ClientUserSettings.js

* modularize

* Update ClientUserSettings.js

* Update Constants.js

* Update ClientUserSettings.js

* Update RESTMethods.js

* Update ClientUserSettings.js

* <.<

src/structures/ClientUserSettings.js

@@ -0,0 +1,77 @@
+const Constants = require('../util/Constants');
+const Util = require('../util/Util');
+
+/**
+ * A wrapper around the ClientUser's settings
+ */
+class ClientUserSettings {
+  constructor(user, data) {
+    this.user = user;
+    this.patch(data);
+  }
+
+  /**
+   * Patch the data contained in this class with new partial data
+   * @param {Object} data Data to patch this with
+   */
+  patch(data) {
+    for (const key of Object.keys(Constants.UserSettingsMap)) {
+      const value = Constants.UserSettingsMap[key];
+      if (!data.hasOwnProperty(key)) continue;
+      if (typeof value === 'function') {
+        this[value.name] = value(data[key]);
+      } else {
+        this[value] = data[key];
+      }
+    }
+  }
+
+  /**
+   * Update a specific property of of user settings
+   * @param {string} name Name of property
+   * @param {value} value Value to patch
+   * @returns {Promise<Object>}
+   */
+  update(name, value) {
+    return this.user.client.rest.methods.patchUserSettings({ [name]: value });
+  }
+
+  /**
+   * @param {Guild} guild Guild to move
+   * @param {number} position Absolute or relative position
+   * @param {boolean} [relative=false] Whether to position relatively or absolutely
+   * @returns {Promise<Guild>}
+   */
+  setGuildPosition(guild, position, relative) {
+    const temp = Object.assign([], this.guildPositions);
+    Util.moveElementInArray(temp, guild.id, position, relative);
+    return this.update('guild_positions', temp).then(() => guild);
+  }
+
+  /**
+   * Add a guild to the list of restricted guilds
+   * @param {Guild} guild Guild to add
+   * @returns {Promise<Guild>}
+   */
+  addRestrictedGuild(guild) {
+    const temp = Object.assign([], this.restrictedGuilds);
+    if (temp.includes(guild.id)) return Promise.reject(new Error('Guild is already restricted'));
+    temp.push(guild.id);
+    return this.update('restricted_guilds', temp).then(() => guild);
+  }
+
+  /**
+   * Remove a guild from the list of restricted guilds
+   * @param {Guild} guild Guild to remove
+   * @returns {Promise<Guild>}
+   */
+  removeRestrictedGuild(guild) {
+    const temp = Object.assign([], this.restrictedGuilds);
+    const index = temp.indexOf(guild.id);
+    if (index < 0) return Promise.reject(new Error('Guild is not restricted'));
+    temp.splice(index, 1);
+    return this.update('restricted_guilds', temp).then(() => guild);
+  }
+}
+
+module.exports = ClientUserSettings;