// ==UserScript==
// @namespace    undefined
// @version      1.0.0

// @name         外卖菜单转换
// @description  获取美团／饿了么／百度外卖菜单页并指定格式输出

// @run-at       document-end
// @include      *://waimai.meituan.com/restaurant/*
// @include      *://i.waimai.meituan.com/restaurant/*
// @include      *://waimai.baidu.com/waimai/shop/*
// @include      *://client.waimai.baidu.com/mobile/waimai*
// @include      *://h5.ele.me/shop/*
// @include      *://www.ele.me/shop/*

// @author       freeshine<shine_c@outlook.com>

// @copyright  2016
// @downloadURL none
// ==/UserScript==

/**
 * 美团外卖PC版
 */
function meituan() {
    const {
        btn,
        textarea
    } = createComponent('美团外卖菜单PC版');

    btn.addEventListener('click', getMeituanMenu.bind(this, btn, textarea), false)
}

function getMeituanMenu(btn, textarea) {
    let info = '';
    const category = document.querySelectorAll('.food-nav .category');
    for (let i = 0, categoryLength = category.length; i < categoryLength; i++) {
        const foodTypeName = category[i].querySelector('.title > span').textContent.trim();
        info += "#" + foodTypeName + "\n";

        const item = category[i].querySelectorAll('.pic-food');
        for (let j = 0, itemLength = item.length; j < itemLength; j++) {
            const foodName = item[j].querySelector('.np .name').getAttribute('title').trim();
            const foodPrice = item[j].querySelector('.labels .price .only').textContent.split('/')[0].substring(1).trim();
            info += assembleItem(foodName, foodPrice);
            info = info.replace('起', '');
        }
    }
    textarea.value = info;
}

/**
 * 美团外卖手机版
 */
function meituanMobile() {
    const {
        btn,
        textarea
    } = createComponent('美团外卖菜单手机版');

    btn.addEventListener('click', getMeituanMobileMenu.bind(this, btn, textarea), false)
}

function getMeituanMobileMenu(btn, textarea) {
    let info = '';
    const category = document.querySelectorAll('.foodlistwrap .foodlist');
    for (let i = 0, categoryLength = category.length; i < categoryLength; i++) {
        const foodTypeName = category[i].querySelector('.foodlist-label').textContent.trim();
        info += "#" + foodTypeName + "\n";

        const item = category[i].querySelectorAll('.fooditem');
        for (let j = 0, itemLength = item.length; j < itemLength; j++) {
            const foodName = item[j].getAttribute('data-foodname').trim();
            const foodPrice = item[j].getAttribute('data-price').trim();
            info += assembleItem(foodName, foodPrice);
        }
    }
    info = info.replace('APP下单优惠菜品', '折扣');
    textarea.value = info;
}

/**
 * 百度外卖PC版
 */
function baidu() {
    const {
        btn,
        textarea
    } = createComponent('百度外卖菜单PC版');

    btn.addEventListener('click', getBaiduMenu.bind(this, btn, textarea), false)
}

function getBaiduMenu(btn, textarea) {
    let info = '';
    const category = document.querySelectorAll('.menu-list .list-wrap');
    for (let i = 0, categoryLength = category.length; i < categoryLength; i++) {
        const foodTypeName = category[i].querySelector('.list-status .title').textContent.trim();
        info += "#" + foodTypeName + "\n";

        const item = category[i].querySelectorAll('.list-item');
        for (let j = 0, itemLength = item.length; j < itemLength; j++) {
            const foodName = item[j].querySelector('h3').getAttribute('data-title').trim();
            const foodPrice = item[j].querySelector('.m-price del') ? item[j].querySelector('.m-price del strong').textContent : item[j].querySelector('.m-price strong').textContent;
            info += assembleItem(foodName, foodPrice.substring(1).trim());
        }
    }
    textarea.value = info;
}

/**
 * 百度外卖手机版
 */
function baiduMobile() {
    const {
        btn,
        textarea
    } = createComponent('百度外卖菜单手机版');

    btn.addEventListener('click', getBaiduMobileMenu.bind(this, btn, textarea), false)
}

function getBaiduMobileMenu(btn, textarea) {
    let info = '';
    const category = document.querySelectorAll('#shopmenu-category .list-item a');
    const categoryGroup = document.querySelectorAll('#shopmenu-list .listgroup')

    for (let i = 0, categoryLength = category.length; i < categoryLength; i++) {

        const foodTypeName = category[i].textContent.trim();
        info += "#" + foodTypeName + "\n";

        const item = categoryGroup[i].querySelectorAll('.list-item');
        for (let j = 0, itemLength = item.length; j < itemLength; j++) {
            const foodName = item[j].querySelector('.title').textContent.trim();
            const foodPrice = item[j].querySelector('.price').textContent.substring(1).trim();
            info += assembleItem(foodName, foodPrice);
        }
    }
    textarea.value = info;
}

/**
 * 饿了么PC版
 */
function eleme() {
    const {
        btn,
        textarea
    } = createComponent('饿了么菜单PC版');

    btn.addEventListener('click', getElemeMenu.bind(this, btn, textarea), false)
}

function getElemeMenu(btn, textarea) {
    let info = '';
    const category = document.querySelectorAll('.shopmenu-main .shopmenu-list');
    for (let i = 0, categoryLength = category.length; i < categoryLength; i++) {
        const foodTypeName = category[i].querySelector('.shopmenu-title').textContent.split(' ')[0].trim();
        info += "#" + foodTypeName + "\n";

        const item = category[i].querySelectorAll('.shopmenu-food');
        for (let j = 0, itemLength = item.length; j < itemLength; j++) {
            const foodName = item[j].querySelector('.shopmenu-food-name').textContent.trim();
            const foodPrice = item[j].querySelector('.shopmenu-food-price').textContent.trim();
            info += assembleItem(foodName, foodPrice);
        }
    }
    textarea.value = info;
}

/**
 * 饿了么手机版
 */
function elemeMobile() {
    const {
        btn,
        textarea
    } = createComponent('饿了么菜单手机版');

    btn.addEventListener('click', getElemeMobileMenu.bind(this, btn, textarea), false)
}

function getElemeMobileMenu(btn, textarea) {
    let info = '';
    const category = document.querySelectorAll('.menu-list dl');
    for (let i = 0, categoryLength = category.length; i < categoryLength; i++) {
        const foodTypeName = category[i].querySelector('dt strong').textContent.trim();
        info += "#" + foodTypeName + "\n";

        const item = category[i].querySelectorAll('dd');
        for (let j = 0, itemLength = item.length; j < itemLength; j++) {
            const foodName = item[j].querySelector('.foodtitle span').textContent.trim();
            const foodPrice = item[j].querySelector('.foodprice .foodprice-origin') ? item[j].querySelector('.foodprice .foodprice-origin').textContent.trim() : item[j].querySelector('.foodprice span').textContent.trim();
            info += assembleItem(foodName, foodPrice);
        }
    }
    textarea.value = info;
}

/**
 * 创建页面组件
 */
function createComponent(btnName) {
    console.info(btnName);
    const body = document.body;
    const btn = document.createElement('button');
    btn.style.cssText = "position:fixed;z-index:9999;left:0;bottom:400px;background:#fff;width:120px;height:40px;";
    btn.innerHTML = btnName;
    body.appendChild(btn);

    const textarea = document.createElement('textarea');
    textarea.style.cssText = "position:fixed;z-index:9999;left:0;bottom:0px;height:380px;";
    body.appendChild(textarea);
    return {
        btn,
        textarea
    };
}

/**
 * 按格式 组装name price
 */
function assembleItem(name, price) {
    return name + ' ' + price + '\n';
}

function init() {
    if (location.host === 'i.waimai.meituan.com') {
        meituanMobile();
    } else if (location.host === 'waimai.meituan.com') {
        meituan();
    } else if (location.host === 'client.waimai.baidu.com') {
        baiduMobile();
    } else if (location.host === 'waimai.baidu.com') {
        baidu();
    } else if (location.host === 'h5.ele.me') {
        elemeMobile();
    } else if (location.host === 'www.ele.me') {
        eleme();
    }
}

init();