var base64 = base64 || (function () {
	var base64Map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".split('');
	var base64DeMap = !function () {
		var result = {};
		$.each(base64Map, function (i, e) {
			result[e] = i;
		});
		return result;
	}();

	var target = {};
	target.encode = function (data) {
		var buf = [];
		var map = base64Map;
		var n = data.length; //总字节数 
		var val; //中间值 
		var i = 0;

		/* 
		* 3字节 ==> val ==> 4字符 
		*/
		while (i < n) {
			val = (data[i] << 16) |
			(data[i + 1] << 8) |
			(data[i + 2]);

			buf.push(map[val >> 18],
				map[val >> 12 & 63],
				map[val >> 6 & 63],
				map[val & 63]);
			i += 3;
		}

		if (n % 3 == 1) //凑两个"=" 
			buf.pop(), buf.pop(), buf.push('=', '=');
		else //凑一个"=" 
			buf.pop(), buf.push('=');

		return buf.join('');
	};
	target.decode = function (str) {
		var buf = [];
		var arr = str.split('');
		var map = base64DeMap;
		var n = arr.length; //总字符数 
		var val; //中间值 
		var i = 0;

		/* 
		* 长度异常 
		*/
		if (n % 4)
			return null;

		/* 
		* 4字符 ==> val ==> 3字节 
		*/
		while (i < n) {
			val = (map[arr[i]] << 18) |
				(map[arr[i + 1]] << 12) |
				(map[arr[i + 2]] << 6) |
				(map[arr[i + 3]]);

			buf.push(val >> 16,
				val >> 8 & 0xFF,
				val & 0xFF);
			i += 4;
		}

		/* 
		* 凑字字符"="个数 
		*/
		while (arr[--n] == '=')
			buf.pop();

		return buf;
	};
	target.encodeArrayBuffer = function (arrayBuffer) {
		/// <summary>将ArrayBuffer转换为Base64字符串</summary>
		var dv = new DataView(arrayBuffer);
		var length = dv.byteLength;
		var data = [];
		for (var i = 0; i < length; i++) {
			data.push(dv.getUint8(i));
		}
		return base64.encode(data);
	};
	target.toObjectUrl = function (base64str, type) {
		/// <summary>获得指定base64字符串的对象链接格式</summary>
		return "data:" + type + ";base64," + base64str;
	};

	return target;
})();

$(function () {
	var enableDirectAccess = false;
	var directAccessCounter = 0;

	//监听ajax事件
	document.addEventListener("ajaxproxy", function (e) {
		var detail = e.detail;
		var data = detail.data;
		var handle = {
			success: null,
			status: null,
			statusText: null,
			url: data.url,
			text: null,
			model: null,
			request: data,
			index: detail.index
		};

		//set header
		data.headers = data.headers || {};
		if (data.headers) {
			var nheader = {};
			$.each(data.headers, function (k, v) {
				nheader["Fish-" + k] = v;
			});
			data.headers = nheader;
		}
		if (data.refer)
			data.headers["Fish-Referer"] = data.refer;
		data.headers["Fish-User-Agent"] = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)";
		data.headers["Fish-Origin"] = /(https?:\/\/[^\/]+\/)/i.exec(data.url)[1];
		if (!data.headers["Fish-Referer"])
			data.headers["Fish-Referer"] = null;

		if (!enableDirectAccess || data.url.indexOf("leftTicket/query") === -1 || (directAccessCounter++) % 3 === 0) {
			$.ajax(data).done(function (result, status, xhr) {
				handle.success = true;
				handle.status = xhr.status;
				handle.statusText = xhr.statusText;
				handle.text = xhr.responseText;
				handle.model = result;
				handle.headers = xhr.getAllResponseHeaders();

				notifyAjaxComplete(handle);
			}).fail(function (xhr) {
				handle.success = false;
				handle.status = xhr.status;
				handle.statusText = xhr.statusText || "";
				handle.text = xhr.responseText || "";
				handle.model = null;
				handle.headers = xhr.getAllResponseHeaders();

				notifyAjaxComplete(handle);
			});
		} else {
			chrome.runtime.sendMessage({ action: "directAccess", data: data }, function(args) {
				(function(success, status, statusText, text, headers, model) {
					handle.success = success;
					handle.status = status;
					handle.statusText = statusText || "";
					handle.text = text || "";
					handle.model = model;
					handle.headers = headers;

					notifyAjaxComplete(handle);
				}).apply(this, args);
			});
		}
		e.preventDefault && e.preventDefault();
		e.stopPropagation && e.stopPropagation();
	});

	var notifyAjaxComplete = function (key) {
		var e = new CustomEvent("ajaxproxyfinished", { detail: key });
		document.dispatchEvent(e);
	};

	document.addEventListener("ajaxLoadVerifyCode", function (e) {
		var ctx = e.detail;

		var xhr = new XMLHttpRequest();
		xhr.open("GET", ctx.url, true);
		xhr.onreadystatechange = function () {
			if (xhr.readyState == 4) {
				if (xhr.status != 200) {
					document.dispatchEvent(new CustomEvent("ajaxproxyfinished", {
						detail: {
							url: null,
							success: false,
							index: ctx.index,
							headers: xhr.getAllResponseHeaders()
						}
					}));
				} else {
					var imgUrl = base64.toObjectUrl(base64.encodeArrayBuffer(xhr.response), "image/jpeg");
					document.dispatchEvent(new CustomEvent("ajaxproxyfinished", {
						detail: {
							url: imgUrl,
							success: true,
							index: ctx.index,
							headers: xhr.getAllResponseHeaders()
						}
					}));
				}
			}
		};
		xhr.responseType = "arraybuffer";
		xhr.setRequestHeader("Fish-Referer", ctx.refer);
		xhr.setRequestHeader("Fish-User-Agent", "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)");
		xhr.setRequestHeader("Fish-Origin", /(https?:\/\/[^\/]+\/)/.exec(ctx.url)[1]);
		if (ctx.headers) {
			$.each(ctx.headers, function (k, v) {
				xhr.setRequestHeader("Fish-" + k, v);
			});
		}
		xhr.send(ctx.data || null);

		e.preventDefault && e.preventDefault();
		e.stopPropagation && e.stopPropagation();
	});

	document.body.dataset["targetExtensionId"] = chrome.runtime.id;
	document.body.dataset["targetExtensionVersion"] = chrome.runtime.getManifest().version;
	document.body.dataset["mobileSupportInitialized"] = 1;
	chrome.runtime.sendMessage({ action: "getBv" }, function (m) {
		document.body.dataset["browserVersion"] = m.bv;
		document.dispatchEvent(new CustomEvent("mobileSupportInitialized"));
	});
	chrome.runtime.sendMessage({ action: "servervalid" }, function (vm) {
		console.log("liebao detected: " + vm.valid);
		if (!vm.valid)
			return;

		chrome.runtime.sendMessage({ action: "getServerStatus" }, function (m) {
			enableDirectAccess = m.enableDirectAccess;
			console.log("direct access: " + enableDirectAccess);
		});
	});
});