conversation2.js

class Conversation {
    
    //...
    
    //Intent user_data
    actionUserData() {
        if (this.dialogflowApp.isPermissionGranted()) {
            const userName = this.dialogflowApp.getUserName();
            if (userName) {
                this.userManager.saveAssistantUserName(this._getCurrentUserId(), userName);
                const deviceLocation = this.dialogflowApp.getDeviceLocation();
                if (deviceLocation) {
                    return this._setupUserTimezoneAndFinish(deviceLocation);
                } else {
                    return this._askForUserPreciseLocation(userName.givenName)
                }
            } else {
                this._finishWithUnexpectedProblems();
            }
        } else {
            this._finishWithPermissionsDenied();
        }

        return Promise.resolve(true);
    }
    
     _setupUserTimezoneAndFinish(deviceLocation) {
        const timezone = this.timeManager.getTimeZoneFromCoordinates(deviceLocation.coordinates);
        return this.timeManager.saveAssistantUserTimezone(this._getCurrentUserId(), timezone).then(() => {
            this.dialogflowApp.tell(Str.SETTINGS_UPDATE);
        });
    }

    _askForUserPreciseLocation(userName) {
        const permission = this.dialogflowApp.SupportedPermissions.DEVICE_PRECISE_LOCATION;
        return this.timeManager.getPlatformTime().then(platformTime => {
            this.dialogflowApp.askForPermission(
                util.format(Str.PERMISSIONS_ASK_FOR_LOCATION, userName, platformTime),
                permission
            );
        })
    }

    _finishWithUnexpectedProblems() {
        this.dialogflowApp.tell(Str.PERMISSIONS_UNEXPECTED_ISSUES);
    }

    _finishWithPermissionsDenied() {
        this.dialogflowApp.tell(Str.PERMISSIONS_DENIED);
    }
    //...
}