/**
 * YOHO-SDK
 *
 * 与原生 APP 交互的代码
 * 所有函数要做降级处理
 * 假如不是 YOHO App，在浏览器实现对应的功能
 * 浏览器不支持的功能，给出提示，控制台不能报错，不影响后续代码执行
 *
 * 希望能与 微信 JS-SDK 一样方便
 * http://git.yoho.cn/mobile/AppJSBridge/blob/master/AppH5Bridge.md
 * http://git.yoho.cn/mobile/appbridge    old、sick、ugly
 */
var $ = require('yoho-jquery');
var tip = require('./plugin/tip');
var cookie = require('yoho-cookie');

/* 空方法 */
var emptyFn = function() {};

/* 提示信息 */
var tipInfo = '暂不支持，请在YOHO!BUY应用中打开';

var qs = window.queryString;

var yoho, $appLink;

$appLink = $('#yoho-app-link');

if (!$appLink.length) {
    $('body').append('<a id="yoho-app-link" href="javascript:;" style="display:none !important;"></a>');
    $appLink = $('#yoho-app-link');
}

yoho = {
    /**
     * 判断是否是 APP
     */
    isApp: /YohoBuy/i.test(navigator.userAgent || '') || qs && qs.app_version,
    isiOS: /\(i[^;]+;( U;)? CPU.+Mac OS X/i.test(navigator.userAgent || ''),
    isAndroid: /Android/i.test(navigator.userAgent || ''),

    /**
     * JS 与 APP 共享的对象
     */
    data: window.yohoInterfaceData,

    /**
     * 判断是否是 登录
     */
    isLogin: function() {
        return cookie.get('_YOHOUID');
    },

    ready: function(callback) {
        if (this.isApp) {
            document.addEventListener('deviceready', callback);
        } else {
            return callback();
        }
    },

    /**
     * 调用APP原生方法
     * @param method 方法名称
     * @param args 传递给 APP 的参数 {"index":tab_index}
     * @param success 调用成功的回调方法
     * @param fail 调用失败的回调方法
     */
    invokeMethod: function(method, args, success, fail) {
        var appInterface = window.yohoInterface;

        if (this.isApp && appInterface) {
            appInterface.triggerEvent(success || emptyFn, fail || emptyFn, {
                method: method,
                arguments: args
            });
        } else {
            tip.show(tipInfo);
        }
    },

    /**
     * 原生调用 JS 方法
     * @param name 方法名
     * @param callback 回调
     */
    addNativeMethod: function(name, callback) {
        var appInterface = window.yohoInterface;

        // 延迟 500ms 注入
        setTimeout(function() {
            if (appInterface) {
                appInterface[name] = callback;
            }
        }, 500);
    },

    parseUrl: function(url) {
        var query = {},
            hashs,
            hash,
            i;

        url = (url || '').split('?');
        hashs = (url[1] || '').split('&');

        if (hashs && hashs.length) {
            for (i = 0; i < hashs.length; i++) {
                hash = hashs[i].split('=');
                query[hash[0]] = hash[1];
            }
        }

        return {
            path: url[0],
            query: query
        };
    },

    getUid: function() {
        if (yoho.isApp) {
            return qs.uid;
        }

        return window.getUid();
    },

    goLogin: function(refer, data) {
        var url;

        url = 'http://m.yohobuy.com/signin.html?refer=' + encodeURIComponent(refer);
        refer = yoho.parseUrl(refer || location.href);

        if (yoho.isApp) {
            url = url + '&openby:yohobuy=' + (data || JSON.stringify({
                action: 'go.weblogin',
                params: {
                    priority: 'N',
                    jumpurl: {
                        url: refer.path,
                        param: refer.query
                    }
                }
            }));
        }

        $appLink.attr('href', url);
        $appLink[0].click();
        return false;
    },

    goH5: function(link, data) {
        var url = link;

        if (!link) {
            return;
        }
        link = yoho.parseUrl(link || location.href);

        if (yoho.isApp) {
            url = url + '&openby:yohobuy=' + (data || JSON.stringify({
                action: 'go.h5',
                params: {
                    islogin: 'N',
                    type: 0,
                    updateflag: Date.now() + '',
                    url: link.path,
                    param: link.query
                }
            }));
        }

        $appLink.attr('href', url);
        $appLink[0].click();
        return false;
    },

    goHome: function() {
        var url = '//m.yohobuy.com/';

        if (yoho.isApp) {
            url = url + '?openby:yohobuy=' + JSON.stringify({
                action: 'go.home'
            });
        }
        $appLink.attr('href', url);
        $appLink[0].click();
        return false;
    }
};

module.exports = yoho;