feat(open/close): adds isOpen, open and close methods

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ngx-freshchat",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "repository": {
     "type": "git",
     "url": "https://github.com/beyondsanity/ngx-freshchat"

projects/ngx-freshchat-lib/package.json

@@ -1,6 +1,6 @@
 {
   "name": "ngx-freshchat",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "peerDependencies": {
     "@angular/common": "^6.0.0-rc.0 || ^6.0.0 || ^7.0.0 || ^8.0.0",
     "@angular/core": "^6.0.0-rc.0 || ^6.0.0 || ^7.0.0 || ^8.0.0"

projects/ngx-freshchat-lib/src/lib/ngx-freshchat-lib.service.ts

@@ -6,6 +6,9 @@ import { first, flatMap } from 'rxjs/operators';
 interface FCWidget {
   init;
   user;
+  isOpen;
+  open;
+  close;
   track;
   setTags;
   setLocale;
@@ -127,6 +130,33 @@ export class NgxFreshChatService {
     });
   }
 
+  /**
+   * Checks whether the Freshchat Widget is open.
+   * @author beyondsanity
+   */
+  isOpen(): boolean {
+    return this.getWidget().isOpen();
+  }
+
+  /**
+   * Opens the Freshchat Widget.
+   *
+   * @param payload Optional - parameters including channel id or name.
+   * The replyText parameter can be used to set up custom text in the text area of the widget.
+   * @author beyondsanity
+   */
+  open(payload: { name?: string, channelId?: string, replyText?: string }): void {
+    this.getWidget().open(payload);
+  }
+
+  /**
+   * Closes the Freshchat Widget.
+   * @author beyondsanity
+   */
+  close(): void {
+    this.getWidget().close();
+  }
+
   /**
    * Tracks an event against the current user.
    * @param eventName The event name to track.