/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
*/

/**
 * This class provides access to the device camera.
 *
 * @constructor
 */
Camera = function() {
    this.options = null;
};

/**
 * Format of image that returned from getPicture.
 *
 * Example: navigator.camera.getPicture(success, fail,
 *              { quality: 80,
 *                destinationType: Camera.DestinationType.DATA_URL,
 *                sourceType: Camera.PictureSourceType.PHOTOLIBRARY})
 */
Camera.DestinationType = {
    DATA_URL: 0,                // Return base64 encoded string
    FILE_URI: 1                 // Return file URI
};
Camera.prototype.DestinationType = Camera.DestinationType;

/**
 * Source to getPicture from.
 *
 * Example: navigator.camera.getPicture(success, fail,
 *              { quality: 80,
 *                destinationType: Camera.DestinationType.DATA_URL,
 *                sourceType: Camera.PictureSourceType.PHOTOLIBRARY})
 */
Camera.PictureSourceType = {    // Ignored on Blackberry
    PHOTOLIBRARY : 0,           // Choose image from picture library 
    CAMERA : 1,                 // Take picture from camera
    SAVEDPHOTOALBUM : 2         // Choose image from picture library 
};
Camera.prototype.PictureSourceType = Camera.PictureSourceType;

/**
 * Gets a picture from source defined by "options.sourceType", and returns the
 * image as defined by the "options.destinationType" option.

 * The defaults are sourceType=CAMERA and destinationType=DATA_URL.
 *
 * @param {Function} successCallback
 * @param {Function} errorCallback
 * @param {Object} options
 */
Camera.prototype.getPicture = function(successCallback, errorCallback, options) {

    // successCallback required
    if (typeof successCallback != "function") {
        console.log("Camera Error: successCallback is not a function");
        return;
    }

    // errorCallback optional
    if (errorCallback && (typeof errorCallback != "function")) {
        console.log("Camera Error: errorCallback is not a function");
        return;
    }

    this.options = options;
    var quality = 80;
    if (options.quality) {
        quality = this.options.quality;
    }
    var destinationType = Camera.DestinationType.DATA_URL;
    if (this.options.destinationType) {
        destinationType = this.options.destinationType;
    }
    var sourceType = Camera.PictureSourceType.CAMERA;
    if (typeof this.options.sourceType == "number") {
        sourceType = this.options.sourceType;
    }
    Cordova.exec(successCallback, errorCallback, "org.apache.cordova.Camera", "getPicture", [quality, destinationType, sourceType]);
};

Cordova.addConstructor(function() {
	if (typeof navigator.camera == "undefined") navigator.camera = new Camera();
});