WIP Introduce Channel class

This is a breaking change, introducing a new Channel class to hold the
channel meta information, and functions to open either the last
DailyArchive, or one for a specified date.

src/chat-messages.js

@@ -199,55 +199,45 @@ const ChatMessages = function (privateClient, publicClient) {
   publicClient.declareType("daily-archive-meta", "https://kosmos.org/ns/v2/chat-channel-meta", archiveMetaSchema);
 
   /**
-   * A daily archive stores chat messages by calendar day.
+   * A chat channel
    *
    * @class
    */
-  class DailyArchive {
+  class Channel {
     /**
      * @param {object} options
      * @param {object} options.service
      * @param {string} options.service.protocol - Type of chat service/protocol (e.g. "IRC", "XMPP", "Campfire", "Slack")
      * @param {string} options.service.domain   - Domain of the chat service (e.g. "irc.libera.chat", "kosmos.chat")
-     * @param {string} options.channelName      - Name of room/channel (e.g. "#kosmos")
+     * @param {string} options.name             - Name of room/channel (e.g. "#kosmos")
-     * @param {string} [options.channelType]    - Type of channel ("room" or "person")
+     * @param {string} [options.type]           - Type of channel ("room" or "person")
-     * @param {date} options.date               - Date of archive day
-     * @param {boolean} [options.isPublic]      - Store logs in public folder (defaults to false)
-     * @param {string} [options.previous]       - Date of previous log file as `YYYY/MM/DD`. Looked up automatically when not given
-     * @param {string} [options.next]           - Date of next log file as `YYYY/MM/DD`. looked up automatically when not given
      *
      * @example
-     * // IRC archive:
+     * // IRC channel:
-     * const archive = new chatMessages.DailyArchive({
+     * const channel = new remoteStorage.chatMessages.Channel({
      *   service: {
      *     protocol: 'IRC',
      *     domain: 'irc.libera.chat',
      *   },
-     *   channelName: '#kosmos-dev',
+     *   name: '#kosmos-dev',
-     *   channelType: 'room',
+     *   type: 'room'
-     *   date: new Date(),
-     *   isPublic: true
      * });
      *
-     * // XMPP archive:
+     * // XMPP channel:
-     * const archive = new chatMessages.DailyArchive({
+     * const channel = new remoteStorage.chatMessages.Channel({
      *   service: {
      *     protocol: 'XMPP',
      *     domain: 'kosmos.chat',
      *   },
-     *   channelName: 'kosmos-dev',
+     *   name: 'kosmos-dev',
-     *   channelType: 'room',
+     *   type: 'room'
-     *   date: new Date(),
-     *   isPublic: false
      * });
-     *
      */
     constructor (options) {
       //
       // Defaults
       //
-      options.isPublic    = options.isPublic    || false;
+      options.type = options.type || "room";
-      options.channelType = options.channelType || "room";
 
       //
       // Validate options
@@ -258,16 +248,10 @@ const ChatMessages = function (privateClient, publicClient) {
       if (typeof options.service !== "object" ||
           typeof options.service.protocol !== "string" ||
           typeof options.service.domain !== "string") {
-        throw "service must be an object containing at least service \"protocol\" and \"domain\"";
+        throw "options.service must be an object containing at least service \"protocol\" and \"domain\"";
       }
-      if (typeof options.channelName !== "string") {
+      if (typeof options.name !== "string") {
-        throw "channelName must be a string";
+        throw "options.name must be a string";
-      }
-      if (!(options.date instanceof Date)) {
-        throw "date must be a date object";
-      }
-      if (typeof options.isPublic !== "boolean") {
-        throw "isPublic must be a boolean value";
       }
 
       /**
@@ -278,14 +262,130 @@ const ChatMessages = function (privateClient, publicClient) {
       this.service = options.service;
 
       /**
-       * @property {string} channelName - Name of channel (e.g. "#kosmos")
+       * @property {string} name - Name of channel (e.g. "#kosmos")
        */
-      this.channelName = options.channelName;
+      this.name = options.name;
 
       /**
-       * @property {string} channelType - Type of channel ("room" or "person")
+       * @property {string} type - Type of channel ("room" or "person")
        */
-      this.channelType = options.channelType;
+      this.type = options.type;
+
+      /**
+       * @property {string} path - Base directory path of the channel archives
+       */
+      if (this.type === "room") {
+        // Normal chatroom
+        const name = this.name.replace(/#/,'');
+        this.path = `${this.service.domain}/channels/${name}`;
+      } else {
+        // User direct messages
+        this.path = `${this.service.domain}/users/${this.name}`;
+      }
+
+      /**
+       * @property {string} metaPath - Path of the channel's metadata document
+       */
+      this.metaPath = `${this.path}/meta`;
+    }
+
+    /*
+     * Returns the last stored DailyArchive, or a new one for the current day.
+     *
+     * @param {object} options
+     * @param {boolean} [options.public] - Public or private archive. Defaults to 'false'.
+     *
+     * @returns {Promise}
+     */
+    async openLastDailyArchive (options={}) {
+      const client = options.public ? publicClient : privateClient;
+      const meta = await client.getObject(this.metaPath);
+
+      if (meta && meta.last) {
+        return new DailyArchive({
+          channel: this,
+          date: new Date(meta.last.replace(/\//g,'-')),
+          isPublic: options.public
+        });
+      } else {
+        return new DailyArchive({
+          channel: this,
+          date: new Date(),
+          isPublic: options.public
+        });
+      }
+    }
+
+    /*
+     * Returns a DailyArchive for the given date
+     *
+     * @param {object} options
+     * @param {date} options.date        - Date of archive day
+     * @param {boolean} [options.public] - Public or private archive. Defaults to 'false'.
+     *
+     * @returns {Promise}
+     */
+    openDailyArchive (options={}) {
+      if (!(options.date instanceof Date)) {
+        throw 'options.date must be a date object';
+      }
+
+      return new DailyArchive({
+        channel: this,
+        date: options.date,
+        isPublic: options.public
+      });
+    }
+  }
+
+  /**
+   * A daily archive stores chat messages by calendar day.
+   *
+   * @class
+   */
+  class DailyArchive {
+    /**
+     * @param {object} options
+     * @param {string} options.channel     - A Channel instance
+     * @param {date} options.date          - Date of archive day
+     * @param {boolean} [options.isPublic] - Store logs in public folder (defaults to false)
+     * @param {string} [options.previous]  - Date of previous log file as `YYYY/MM/DD`. Looked up automatically when not given
+     * @param {string} [options.next]      - Date of next log file as `YYYY/MM/DD`. Looked up automatically when not given
+     *
+     * @example
+     * const channel = new remoteStorage.chatMessages.Channel({ ...options })
+     * const archive = new chatMessages.DailyArchive({
+     *   channel: channel,
+     *   date: new Date(),
+     *   isPublic: true
+     * });
+     */
+    constructor (options) {
+      //
+      // Defaults
+      //
+      options.isPublic = options.isPublic || false;
+
+      //
+      // Validate options
+      //
+      if (typeof options !== "object") {
+        throw "options must be an object";
+      }
+      if (!(options.channel instanceof Channel)) {
+        throw "options.channel must be a Channel object";
+      }
+      if (!(options.date instanceof Date)) {
+        throw "options.date must be a date object";
+      }
+      if (typeof options.isPublic !== "boolean") {
+        throw "options.isPublic must be a boolean value";
+      }
+
+      /**
+       * @property {Channel} channel - A Channel instance
+       */
+      this.channel = options.channel;
 
       /**
        * @property {string} date - Gregorian calendar date of the archive's content
@@ -310,27 +410,15 @@ const ChatMessages = function (privateClient, publicClient) {
        */
       this.dateId = this.parsedDate.year+'/'+this.parsedDate.month+'/'+this.parsedDate.day;
 
-      /**
-       * @property {string} channelPath - Base directory path of the channel archives
-       */
-      if (this.channelType === "room") {
-        // Normal chatroom
-        const channelName = this.channelName.replace(/#/,'');
-        this.channelPath = `${this.service.domain}/channels/${channelName}`;
-      } else {
-        // User direct messages
-        this.channelPath = `${this.service.domain}/users/${this.channelName}`;
-      }
-
       /**
        * @property {string} path - Path of the archive document
        */
-      this.path = `${this.channelPath}/${this.dateId}`;
+      this.path = `${this.channel.path}/${this.dateId}`;
 
       /**
        * @property {string} metaPath - Path of the channel's metadata document
        */
-      this.metaPath = `${this.channelPath}/meta`;
+      this.metaPath = `${this.channel.path}/meta`;
 
       /**
        * @property {object} client - Public or private remoteStorgage.js BaseClient
@@ -359,7 +447,7 @@ const ChatMessages = function (privateClient, publicClient) {
      * @returns {Promise}
      */
     addMessage (message) {
-      if (this.isPublic && !this.channelName.match(/^#/)) {
+      if (this.isPublic && !this.channel.name.match(/^#/)) {
         return Promise.resolve(false);
       }
 
@@ -384,7 +472,7 @@ const ChatMessages = function (privateClient, publicClient) {
      * @returns {Promise}
      */
     addMessages (messages, overwrite) {
-      if (this.isPublic && !this.channelName.match(/^#/)) {
+      if (this.isPublic && !this.channel.name.match(/^#/)) {
         return Promise.resolve(false);
       }
 
@@ -489,14 +577,14 @@ const ChatMessages = function (privateClient, publicClient) {
      * @private
      */
     _buildArchiveObject () {
-      const roomName = this.channelName.replace(/#/,'');
+      const roomName = this.channel.name.replace(/#/,'');
 
       const archive = {
-        "@id": "chat-messages/"+this.service.domain+"/channels/"+roomName+"/",
+        "@id": "chat-messages/"+this.channel.service.domain+"/channels/"+roomName+"/",
         "@type": "ChatChannel",
-        "service": this.service,
+        "service": this.channel.service,
-        "name": this.channelName,
+        "name": this.channel.name,
-        "type": this.channelType,
+        "type": this.channel.type,
         "today": {
           "@id": this.dateId,
           "@type": "ChatLog",
@@ -505,10 +593,10 @@ const ChatMessages = function (privateClient, publicClient) {
         }
       };
 
-      switch (this.service.protocol) {
+      switch (this.channel.service.protocol) {
         case 'IRC':
-          if (!this.channelName.match(/^#/)) {
+          if (!this.channel.name.match(/^#/)) {
-            archive["@id"] = "chat-messages/"+this.service.domain+"/users/"+this.channelName+"/";
+            archive["@id"] = "chat-messages/"+this.channel.service.domain+"/users/"+this.channel.name+"/";
           }
           break;
         case 'XMPP':
@@ -630,10 +718,10 @@ const ChatMessages = function (privateClient, publicClient) {
       // When creating a new meta doc, we need to find the oldest archive,
       // because older versions of the module did not write a meta doc.
       const first = await this._findFirstArchive();
-      const roomName = this.channelName.replace(/#/,'');
+      const roomName = this.channel.name.replace(/#/,'');
 
       const meta = {
-        '@id': `chat-messages/${this.service.domain}/channels/${roomName}/meta`,
+        '@id': `chat-messages/${this.channel.service.domain}/channels/${roomName}/meta`,
         '@type': 'ChatChannelMeta',
         first: first,
         last: this.dateId // TODO might have to search for last?
@@ -677,6 +765,8 @@ const ChatMessages = function (privateClient, publicClient) {
         console.warn('[chat-messages] Error trying to store object', error);
         return error;
       });
+
+      // TODO await this.client.startSync();
     }
   };