zonble
diff --git a/‎src/api/ChartFetcher.js‎
Lines changed: 45 additions & 0 deletions b/‎src/api/ChartFetcher.js‎
Lines changed: 45 additions & 0 deletions
diff --git a/‎test/apitest.js‎
Lines changed: 14 additions & 0 deletions b/‎test/apitest.js‎
Lines changed: 14 additions & 0 deletions
@@ -11,6 +11,11 @@ export default class ChartFetcher extends Fetcher {
      */
     constructor(http, territory = 'TW') {
         super(http, territory = 'TW')
+
+        /**
+         * @ignore
+         */
+        this.playlist_id = undefined
     }
 
     /**
@@ -25,4 +30,44 @@ export default class ChartFetcher extends Fetcher {
             territory: this.territory
         })
     }
+
+    /**
+     * Init the chart fetcher.
+     *
+     * @param {string} playlist_id - The playlist ID.
+     * @return {ChartFetcher}
+     * @see https://docs-en.kkbox.codes/v1.1/reference#charts-playlist_id
+     */
+    setPlaylistID(playlist_id) {
+        this.playlist_id = playlist_id        
+        return this
+    }
+
+    /**
+     * Fetch playlist of the chart you set.
+     *
+     * @return {Promise}
+     * @example api.chartFetcher.setPlaylistID('4mJSYXvueA8t0odsny').fetchMetadata()
+     * @see https://docs-en.kkbox.codes/v1.1/reference#charts-playlist_id
+     */
+    fetchMetadata() {
+        return this.http.get(ENDPOINT + this.playlist_id, {territory: this.territory})
+    }
+
+    /**
+     * Fetch tracks of the playlist with the chart fetcher you init. Result will be paged.
+     *
+     * @param {number} [limit] - The size of one page.
+     * @param {number} [offset] - The offset index for first element.
+     * @return {Promise}
+     * @example api.chartFetcher.setPlaylistID('4mJSYXvueA8t0odsny').fetchTracks()
+     * @see https://docs-en.kkbox.codes/v1.1/reference#charts-playlist_id-tracks
+     */
+    fetchTracks(limit = undefined, offset = undefined) {
+        return this.http.get(ENDPOINT + this.playlist_id + '/tracks', {
+            territory: this.territory,
+            limit: limit,
+            offset: offset
+        })
+    }
 }
@@ -358,6 +358,20 @@ describe('Api Begin to Test', () => {
                                 })
                             })
                         })
+
+                        describe('#fetchMetadata()', () => {
+                            it('should succeed', (done) => {
+                                chartFetcher.setPlaylistID('4mJSYXvueA8t0odsny').fetchMetadata()
+                                    .then(response => response.status.should.be.exactly(200), reject => should.not.exists(reject))
+                            })
+                        })
+
+                        describe('#fetchTracks()', () => {
+                            it('should succeed', (done) => {
+                                chartFetcher.setPlaylistID('4mJSYXvueA8t0odsny').fetchTracks()
+                                    .then(response => response.status.should.be.exactly(200), reject => should.not.exists(reject))
+                            })
+                        })
                     })
 
                     describe('New Release Category', () => {