/// <reference path="../../includes.ts"/>

module Configs{
	export function removeElementByValue(array:Array<any> ,value:any, key?:string ){
		if(key){
			for(var i=0; i<array.length; i++){
				if(array[i][key] === value){
					array.splice(i ,1);
					break;
				}
			}
		}else{
			for(var i=0 ; i<array.length; i++){
				if(array[i] === value){
					array.splice(i ,1);
					break;
				}
			}
		}
	}

	export function removeElementsByValue(array: Array<any>, elements:Array<any>){
		angular.forEach(elements, (element) =>{
			removeElementByValue(array, element.value, element.key);
		});
	}

	/**
		对象的深拷贝
	*/

	export function deepCopy(object) {
		var n,i;
	    if (object instanceof Array) {
	        n = [];
	        for (i = 0; i < object.length; ++i) {
	            n[i] = deepCopy(object[i]);
	        }
	        return n;

	    } else if (object instanceof Object) {
	        n = {}
	        for (i in object) {
	            n[i] = deepCopy(object[i]);
	        }
	        return n;
	    } else {
	        return object;
	    }
	}

	export function downloadFile($scope, $http, url, fn?){
		$http.get(url, { responseType: 'arraybuffer'})
          .success( function(data, status, headers) {          
          	if(angular.isFunction(fn))
          		fn();
            var octetStreamMime = 'application/octet-stream';
            var success = false;
            // Get the headers
            headers = headers();            
            // Get the filename from the x-filename header or default to "服务列表"
            var filename = "服务文件";
            var params = headers['content-disposition'].split(";");            
            for(var i = 0; i< params.length; i++){
            	if(params[i].indexOf("filename") != -1){
            		var tmp = params[i].split("=");
            		if(tmp.length == 2)
            			filename = tmp[1].replace(new RegExp("\"", "gm"),"");
            	}
            }
            
            // Determine the content type from the header or default to "application/octet-stream"
            var contentType = headers['content-type'] || octetStreamMime;
            try{
               	// Try using msSaveBlob if supported
                console.log("Trying saveBlob method ...");
                var blob = new Blob([data], { type: contentType });
                  	if(navigator.msSaveBlob)
                      	navigator.msSaveBlob(blob, filename);
                  	else {
                      	// Try using other saveBlob implementations, if available
                      	var saveBlob = navigator["webkitSaveBlob"] || navigator["mozSaveBlob"] || navigator["saveBlob"];
                      	if(saveBlob === undefined) throw "Not supported";
                      	saveBlob(blob, filename);
                  	}
                    console.log("saveBlob succeeded");
                    success = true;
              	} catch(ex){
                  	console.log("saveBlob method failed with the following exception:");
                  	console.log(ex);
              	}
              	if(!success){
                	// Get the blob url creator
                	var urlCreator = window.URL || window["webkitURL"] || window["mozURL"] || window["msURL"];
              	if(urlCreator){
                	// Try to use a download link
                var link = document.createElement('a');
                if('download' in link){
                  // Try to simulate a click
                  	try{
	                    // Prepare a blob URL
	                    console.log("Trying download link method with simulated click ...");
	                    var blob = new Blob([data], { type: contentType });
	                    var url = urlCreator.createObjectURL(blob);
	                    link.setAttribute('href', url);
	                    // Set the download attribute (Supported in Chrome 14+ / Firefox 20+)
	                    link.setAttribute("download", filename);
	                    // Simulate clicking the download link
	                    var event = document.createEvent('MouseEvents');
	                    event.initMouseEvent('click', true, true, window, 1, 0, 0, 0, 0, false, false, false, false, 0, null);
	                    link.dispatchEvent(event);
	                    console.log("Download link method with simulated click succeeded");
	                    success = true;
                  	}catch(ex) {
                     	console.log("Download link method with simulated click failed with the following exception:");
                      	console.log(ex);
                    }
                }
                if(!success){
                  // Fallback to window.location method
                  	try{
	                    // Prepare a blob URL
	                    // Use application/octet-stream when using window.location to force download
	                    console.log("Trying download link method with window.location ...");
	                    var blob = new Blob([data], { type: octetStreamMime });
	                    var url = urlCreator.createObjectURL(blob);
	                    window.location = url;
	                    console.log("Download link method with window.location succeeded");
	                    success = true;
                  	}catch(ex){
                      	console.log("Download link method with window.location failed with the following exception:");
                      	console.log(ex);
                  	}
                }
              }
            }
            if(!success){
              	// Fallback to window.open method
             	console.log("No methods worked for saving the arraybuffer, using last resort window.open");
              	window.open('_blank', '');
              	Configs.customAlert("提示", "文件下载失败", '',null, 0, "error");
            }
        }).error(function(data, status) {
            console.log("Request failed with status: " + status);
            // Optionally write the error out to scope
            fn();
            Configs.customAlert("提示", "文件下载失败", '',null, 0, "error");
            $scope.errorDetails = "Request failed with status: " + status;
        });
	  }
}