var pickSuccess,//加载成功后回调
	len = 0,//上传图片个数
	f = [],//图片路径
	n = 0;//控制循环加载变量
// 弹出选择照片方式
function showActionSheet(num) {
	plus.nativeUI.actionSheet({
			cancel: "取消",
			buttons: [{
				title: "从相册选择"
			}, {
				title: "拍照"
			}]
		},
		function(event) {
			if (event.index == 1) {
				getGallery(num);
			} else if (event.index == 2) {
				getCamera();
			}
		}
	);
};
//获取相册
function getGallery(num) {
	plus.gallery.pick(function(e) { //scb：SuccessCallBack
    	len = e.files.length;
    	f = e.files;
    	n= 0;
    	loadImg();
	}, function(ecb) { //ecb：ErrorCallBack
	}, {
		filename: "_doc/gallery/",
		filter: "image",
		multiple:true,
		maximum:num||9,
		system:false,
		onmaxed:function(){
            plus.nativeUI.alert('最多只能选择9张图片');
        }
	});
}
//加载多张图片
function loadImg() {
	Promise.all([handlePickSucc(f[n])]).then(function (res) {
		n++;
		if (res[0].status == 200) {
			if(pickSuccess && $.isFunction(pickSuccess)) {
				pickSuccess(res[0].urlSucc);
			}
			if (n < len) {
				loadImg();
			}
		} else {
			mui.toast(res[0].msg);	
		}
	});
}
//图片压缩
function handlePickSucc(srcUrl) {
	return new Promise(function (resolve, reject) {
		var lastIdx = srcUrl.lastIndexOf("/"),
			imgName = srcUrl;
		if(lastIdx>-1) {
			imgName = srcUrl.slice(lastIdx+1);
		}
		plus.zip.compressImage({
			src: srcUrl,
			dst: "_doc/compressImg/"+imgName,
			quality: 20,
			overwrite: true
		}, function(succ) {
			var urlSucc = succ.target;
			resolve({
				status: 200,
				urlSucc: urlSucc
			});
		}, function(err) {
			resolve({
				status: -1,
				msg: "压缩失败:  " + err.message
			});
		});
	});

}

//加载拍照图片
function loadCameraPic(fileUrl) {
	Promise.all([handlePickSucc(fileUrl)]).then(function (res) {
		if (res[0].status == 200) {
			if(pickSuccess && $.isFunction(pickSuccess)) {
				pickSuccess(res[0].urlSucc);
			}
		} else {
			mui.toast(res[0].msg);	
		}
	});
}
// 调用系统摄像头
function getCamera() {
	var cmr = plus.camera.getCamera();
	cmr.captureImage(function(path) {
		/**
		 * 拍照成功后，图片本保存在本地，这时候我们需要调用本地文件
		 * http://www.html5plus.org/doc/zh_cn/io.html#plus.io.resolveLocalFileSystemURL
		 */
		plus.io.resolveLocalFileSystemURL(path, function(entry) {
			/*
			 * 将获取目录路径转换为本地路径URL地址
			 * http://www.html5plus.org/doc/zh_cn/io.html#plus.io.DirectoryEntry.toLocalURL
			 */
			var fileUrl = entry.toLocalURL();
			loadCameraPic(fileUrl);
		});
	}, function(error) {
		if(error.code==11 && error.message == "null") {
			plus.nativeUI.toast("您尚未授权拍照权限，无法使用拍照功能。");
		}
		// mui.toast(error.message)
	}, {
		filename: "_doc/camera/",
		index: 1 //ios指定主摄像头
	});
}

window.getAutoRecCompressImageLocalPath = function(cb,num) {
	pickSuccess = cb;
	showActionSheet(num);
}