/*
 * $Id: base64.js,v 2.15 2014/04/05 12:58:57 dankogai Exp dankogai $
 *
 *  Licensed under the MIT license.
 *    http://opensource.org/licenses/mit-license
 *
 *  References:
 *    http://en.wikipedia.org/wiki/Base64
 */

(function(global) {
    'use strict';
    // existing version for noConflict()
    var _Base64 = global.Base64;
    var version = "2.1.5";
    // if node.js, we use Buffer
    var buffer;
    if (typeof module !== 'undefined' && module.exports) {
        buffer = require('buffer').Buffer;
    }
    // constants
    var b64chars
        = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
    var b64tab = function(bin) {
        var t = {};
        for (var i = 0, l = bin.length; i < l; i++) t[bin.charAt(i)] = i;
        return t;
    }(b64chars);
    var fromCharCode = String.fromCharCode;
    // encoder stuff
    var cb_utob = function(c) {
        if (c.length < 2) {
            var cc = c.charCodeAt(0);
            return cc < 0x80 ? c
                : cc < 0x800 ? (fromCharCode(0xc0 | (cc >>> 6))
                                + fromCharCode(0x80 | (cc & 0x3f)))
                : (fromCharCode(0xe0 | ((cc >>> 12) & 0x0f))
                   + fromCharCode(0x80 | ((cc >>>  6) & 0x3f))
                   + fromCharCode(0x80 | ( cc         & 0x3f)));
        } else {
            var cc = 0x10000
                + (c.charCodeAt(0) - 0xD800) * 0x400
                + (c.charCodeAt(1) - 0xDC00);
            return (fromCharCode(0xf0 | ((cc >>> 18) & 0x07))
                    + fromCharCode(0x80 | ((cc >>> 12) & 0x3f))
                    + fromCharCode(0x80 | ((cc >>>  6) & 0x3f))
                    + fromCharCode(0x80 | ( cc         & 0x3f)));
        }
    };
    var re_utob = /[\uD800-\uDBFF][\uDC00-\uDFFFF]|[^\x00-\x7F]/g;
    var utob = function(u) {
        return u.replace(re_utob, cb_utob);
    };
    var cb_encode = function(ccc) {
        var padlen = [0, 2, 1][ccc.length % 3],
        ord = ccc.charCodeAt(0) << 16
            | ((ccc.length > 1 ? ccc.charCodeAt(1) : 0) << 8)
            | ((ccc.length > 2 ? ccc.charCodeAt(2) : 0)),
        chars = [
            b64chars.charAt( ord >>> 18),
            b64chars.charAt((ord >>> 12) & 63),
            padlen >= 2 ? '=' : b64chars.charAt((ord >>> 6) & 63),
            padlen >= 1 ? '=' : b64chars.charAt(ord & 63)
        ];
        return chars.join('');
    };
    var btoa = global.btoa ? function(b) {
        return global.btoa(b);
    } : function(b) {
        return b.replace(/[\s\S]{1,3}/g, cb_encode);
    };
    var _encode = buffer
        ? function (u) { return (new buffer(u)).toString('base64') } 
    : function (u) { return btoa(utob(u)) }
    ;
    var encode = function(u, urisafe) {
        return !urisafe 
            ? _encode(u)
            : _encode(u).replace(/[+\/]/g, function(m0) {
                return m0 == '+' ? '-' : '_';
            }).replace(/=/g, '');
    };
    var encodeURI = function(u) { return encode(u, true) };
    // decoder stuff
    var re_btou = new RegExp([
        '[\xC0-\xDF][\x80-\xBF]',
        '[\xE0-\xEF][\x80-\xBF]{2}',
        '[\xF0-\xF7][\x80-\xBF]{3}'
    ].join('|'), 'g');
    var cb_btou = function(cccc) {
        switch(cccc.length) {
        case 4:
            var cp = ((0x07 & cccc.charCodeAt(0)) << 18)
                |    ((0x3f & cccc.charCodeAt(1)) << 12)
                |    ((0x3f & cccc.charCodeAt(2)) <<  6)
                |     (0x3f & cccc.charCodeAt(3)),
            offset = cp - 0x10000;
            return (fromCharCode((offset  >>> 10) + 0xD800)
                    + fromCharCode((offset & 0x3FF) + 0xDC00));
        case 3:
            return fromCharCode(
                ((0x0f & cccc.charCodeAt(0)) << 12)
                    | ((0x3f & cccc.charCodeAt(1)) << 6)
                    |  (0x3f & cccc.charCodeAt(2))
            );
        default:
            return  fromCharCode(
                ((0x1f & cccc.charCodeAt(0)) << 6)
                    |  (0x3f & cccc.charCodeAt(1))
            );
        }
    };
    var btou = function(b) {
        return b.replace(re_btou, cb_btou);
    };
    var cb_decode = function(cccc) {
        var len = cccc.length,
        padlen = len % 4,
        n = (len > 0 ? b64tab[cccc.charAt(0)] << 18 : 0)
            | (len > 1 ? b64tab[cccc.charAt(1)] << 12 : 0)
            | (len > 2 ? b64tab[cccc.charAt(2)] <<  6 : 0)
            | (len > 3 ? b64tab[cccc.charAt(3)]       : 0),
        chars = [
            fromCharCode( n >>> 16),
            fromCharCode((n >>>  8) & 0xff),
            fromCharCode( n         & 0xff)
        ];
        chars.length -= [0, 0, 2, 1][padlen];
        return chars.join('');
    };
    var atob = global.atob ? function(a) {
        return global.atob(a);
    } : function(a){
        return a.replace(/[\s\S]{1,4}/g, cb_decode);
    };
    var _decode = buffer
        ? function(a) { return (new buffer(a, 'base64')).toString() }
    : function(a) { return btou(atob(a)) };
    var decode = function(a){
        return _decode(
            a.replace(/[-_]/g, function(m0) { return m0 == '-' ? '+' : '/' })
                .replace(/[^A-Za-z0-9\+\/]/g, '')
        );
    };
    var noConflict = function() {
        var Base64 = global.Base64;
        global.Base64 = _Base64;
        return Base64;
    };
    // export Base64
    global.Base64 = {
        VERSION: version,
        atob: atob,
        btoa: btoa,
        fromBase64: decode,
        toBase64: encode,
        utob: utob,
        encode: encode,
        encodeURI: encodeURI,
        btou: btou,
        decode: decode,
        noConflict: noConflict
    };
    // if ES5 is available, make Base64.extendString() available
    if (typeof Object.defineProperty === 'function') {
        var noEnum = function(v){
            return {value:v,enumerable:false,writable:true,configurable:true};
        };
        global.Base64.extendString = function () {
            Object.defineProperty(
                String.prototype, 'fromBase64', noEnum(function () {
                    return decode(this)
                }));
            Object.defineProperty(
                String.prototype, 'toBase64', noEnum(function (urisafe) {
                    return encode(this, urisafe)
                }));
            Object.defineProperty(
                String.prototype, 'toBase64URI', noEnum(function () {
                    return encode(this, true)
                }));
        };
    }
    // that's it!
})(this);

if (this['Meteor']) {
    Base64 = global.Base64; // for normal export in Meteor.js
}

; (function (root) {
    // body...

    var videoajax = function (argument) {
        // body...
        var host = '/';

        this._setHost=function(hoststr) {
            host = hoststr;
        };
        this._getHost = function(){
            return host;
        }
    };

    $.extend(videoajax.prototype,{
        /**
         * 设置主域名
         * @param hosts {String} default: '/' 主域名字符串
         */
        setHost :function(hosts){
            this._setHost(hosts);
        },
        //user_id,course_id,lesson_id，break_point
        /**
         * 播放退出时间点
         * @param data {dataObject} 向后台传递的数据对象，应该包含 
         *          user_id {Number} 用户ID
         *          course_id {Number} 课程ID
         *          lesson_id {Number} 课时ID
         *          break_point {Number} 断点
         *@param callback {Function} 回调方法
         */
        quitBreakPoint:function(data,callback){
            var paramfiled = ["user_id","course_id","lesson_id","break_point"];
            var dataStr = verfiyData(paramfiled,data);
            getDate(this._getHost()+'index.php?m=zzplatform&c=userview&a=addBreakPoint',{
                userViewPoint:dataStr
            },function(data){
                    isFunction(callback) ? callback(data.code == 200,data) : '';
                }
            );
        },
        /**
         * user_id:123,course_id:23,lesson_id:3
         *播放历史记录
         * @param data {dataObject} 向后台传递的数据对象，应该包含 
         *          user_id {Number} 用户ID
         *          course_id {Number} 课程ID
         *          lesson_id {Number} 课时ID
         *@param callback {Function} 回调方法
         */
        getBreakPoint:function(data,callback){
            var paramfiled = ["user_id","course_id","lesson_id"];
            var dataStr = verfiyData(paramfiled,data);
            getDate(this._getHost()+'index.php?m=zzplatform&c=userview&a=userbreakpoint',{
                userCourseInfo:dataStr
            },function(data){
                    isFunction(callback) ? callback(data.code == 200,data) : '';
                    // isFunction(callback) ? callback(data) : '';
                }
            );
        },
        /**
         *用户答题答案
         * @param data {dataObject} 向后台传递的数据对象，应该包含 
         *          user_id {Number} 用户ID
         *          course_id {Number} 课程ID
         *          lesson_id {Number} 课时ID
         *          question_order {Number} 问题序号
         *          answer {String} 问题
         *@param callback {Function} 回调方法
         */
        getUserAnswer:function(data,callback){
            var paramfiled = ["user_id","lesson_id","course_id","question_order","answer"];
            var dataStr = verfiyData(paramfiled,data);
            getDate(this._getHost()+'index.php?m=zzplatform&c=userview&a=addUserAnswer',{
                userAnswerInfo:dataStr
            },function(data){
                    isFunction(callback) ? callback(data.code == 200,data) : '';
                }
            );

        },
        /**
         *播放结束
         * @param data {dataObject} 向后台传递的数据对象，应该包含 
         *          order {Number} 排序ID
         *          co {Number} 课时ID
         *@param callback {Function} 回调方法
         */
        finishCourse:function(data,callback){
            var paramfiled = ["order","co","process"];
            var dataStr = verfiyData(paramfiled,data);
            getDate(this._getHost()+'index.php?m=user&c=learnrecord&a=playcount',data,function(data){
                    isFunction(callback) ? callback(data.code == 200,data) : '';
                    // isFunction(callback) ? callback(data) : '';
                }
            );
        },
        /**
         *课程进度获取
         * @param data {dataObject} 向后台传递的数据对象，应该包含 
         *          order {Number} 排序ID
         *          co {Number} 课时ID
         *@param callback {Function} 回调方法
         *   注回调使用的参数,值类似为: {"status":true,"data":{"process":"91"}}
         *                        或: {"status":false,"data":'参数丢失'}
         *                        其中status为true为调用正常, 如果有值则data返回json形式的进度, 没有值则返回[]
         *                        status为false时, data保存的是错误提示
         */
        getfinishCourse:function(data,callback){
            var paramfiled = ["order","co"];
            var dataStr = verfiyData(paramfiled,data);
            getDate(this._getHost()+'index.php?m=user&c=learnrecord&a=getuserlessionprocess',data,function(data){
                    isFunction(callback) ? callback(data) : '';
                    // isFunction(callback) ? callback(data) : '';
                }
            );
        },
        /**
         *解码加密的breakpoint
         * @pparam basecode {String} 要解码的字符串
         */
        fromBaseCode : function(basecode){
            return getBreakPoint(basecode);
        },
        /**
         *通过key值和课时值获取自定的数据
         * @param data {dataObject} 向后台传递的数据对象，应该包含 
         *          lessonId {Number} 课时ID
         *          order {Number} 排序ID
         *@param callback {Function} 回调方法
         */
        getUserDefineInfo :function(data,callback){
            var paramfiled = ["lessonId","order"];
            var dataStr = verfiyData(paramfiled,data);
            getDate(this._getHost()+'index.php?m=zzplatform&c=userview&a=getUserDefineInfo',{
            	defineDate:dataStr
            },function(data){
                isFunction(callback) ? callback(data) : '';
            });
        },
        /**
         *通过key值和课时值及用户ID获取自定的数据
         * @param data {dataObject} 向后台传递的数据对象，应该包含 
         *          lessonId {Number} 课时ID
         *          order {Number} 排序ID
         *@param callback {Function} 回调方法
         */
        getUserDefineInfoByUser :function(data,callback){
            var paramfiled = ["lessonId","order"];
            var dataStr = verfiyData(paramfiled,data);
            getDate(this._getHost()+'index.php?m=zzplatform&c=userview&a=getUserDefineInfoByUser',{
                defineUserDate:dataStr
            },function(data){
                isFunction(callback) ? callback(data) : '';
            });
        },
        /**
         *增加自定数据
         * @param data {dataObject} 向后台传递的数据对象，应该包含 
         *          lessonId {Number} 课时ID
         *          key {string} 键值ID
         *          content {string} 字内容
         *@param callback {Function} 回调方法
         */
        addUserDefine:function(data,callback){
            var paramfiled = ["lessonId","key","content"];
            var dataStr = verfiyData(paramfiled,data);
            getDate(this._getHost()+'index.php?m=zzplatform&c=userview&a=addUserDefine',{
                addDefineDate:dataStr
            },function(data){
                isFunction(callback) ? callback(data) : '';
            });
        }
    })
    
    var getDate = function(url,data,callback){
        $.get(url,data,function(data){
            callback(data);
        },'json')
    };

    var isFunction = function(fn){
        if(typeof fn === 'function')return true;
        return false;
    }
    var verfiyData = function(field,data){
        var arr=[];
        console.log(field);
        console.log('<br/>');
        console.log(data);
        for(var i in field){
        	
            if(!data[field[i]]){
                throw new Error('data is error');
            }
            arr.push(field[i]+':'+data[field[i]]);
        }
        if(root.JSON){
            return JSON.stringify(data);
        }else{
            return '{'+arr.join(',')+'}';
        }

    }

    var getBreakPoint = function (base64point) {
        var newbc = base64point.split('').reverse().join('');
        return Base64.fromBase64(newbc);
    }

    root.videoAjax = function(){
        return new videoajax();
    }
}(this));