/**
 * 逛详情页
 * @author: chenfeng<feng.chen@yoho.cn>
 * @date: 2016/09/07
 */
'use strict';
const helpers = global.yoho.helpers;
const mRoot = '../models';
const infoModel = require(`${mRoot}/info`);
const stringProcess = require(`${global.utils}/string-process`);
const guangProcess = require(`${global.utils}/guang-process`);
const productDetailModel = require('../../product/models/detail');
const headerModel = require('../../../doraemon/models/header'); // 头部model
const channels = {
    boys: 1,
    girl: 2,
    kids: 3,
    lifestyle: 4
};

/**
 * [生成逛资讯内容]
 * @param  {[array]}  articleContent [迭代内容]
 * @param  {Boolean} isApp          [是否在app]
 * @param  {[Boolean]}  gender         [性别]
 */
const _pageArticleContent = (articleContent, isApp, gender) => {
    let contents = [];

    return new Promise((resolve) => {
        let joinContentFunc = (i, len) => {

            if (i < len) {
                let build = {};
                let art = articleContent[i];

                // 文字
                if (art.text && art.text.data && art.text.data.text) {
                    build.text = art.text.data.text;
                    contents.push(build);
                    joinContentFunc(++i, len);
                } else if (art.singleImage) { // 单张图
                    build.bigImage = helpers.image(art.singleImage.data[0].src, 640, 640);
                    contents.push(build);
                    joinContentFunc(++i, len);

                } else if (art.smallPic && art.smallPic.data) {
                    let imgs = art.smallPic.data;

                    build.smallImage = [{
                        src: helpers.image(imgs[0].src, 315, 420)
                    }, {
                        src: helpers.image(imgs[1].src, 315, 420)
                    }
                    ];
                    contents.push(build);
                    joinContentFunc(++i, len);

                } else if (art.weixinPublic) {
                    build.weixinPublic = art.weixinPublic;
                    contents.push(build);
                    joinContentFunc(++i, len);
                } else if (art.goods && art.goods.data) { // 相关推荐
                    let reco = [],
                        skns = [],
                        arr = [];

                    // 遍历取得SKN
                    art.goods.data.forEach(goods => {
                        skns.push(goods.id);
                        arr[goods.id] = goods.src;
                    });

                    // 通过SKN获取商品信息
                    productDetailModel.productInfoBySkns(skns).then((product) => {
                        if (product && product.data) {
                            if (product.data.product_list) {
                                let d = [];

                                for (let o = 0; o < product.data.product_list.length; o++) {
                                    let goods = product.data.product_list[o];

                                     // 最多显示4个
                                    if (o > 3) {
                                        break;
                                    }
                                    d.push(guangProcess.formatProduct(goods, false, true, true, 235, 314, isApp, true, gender));
                                }
                                d.forEach(p => {
                                    if (arr[p.id]) {
                                        p.thumb = helpers.image(arr[p.id], 235, 314);
                                        reco.push(p);
                                    }
                                });
                            }

                             // 多个商品
                            if (product.data.product_list.length && (product.data.product_list.length > 1)) {
                                build.relatedReco = reco;
                            } else if (product.data.product_list.length === 1) { // 单个商品
                                build.relatedReco = reco[0];
                            }
                        }

                        contents.push(build);
                        joinContentFunc(++i, len);
                    });
                } else if (art.goodsGroup && art.goodsGroup.data) { // 悬停浮动商品
                    let callArtGoodGroup = (ii, len2) => {
                        if (ii < len2) {
                            let goods = art.goodsGroup.data[ii];
                            let good = {
                                thumb: helpers.image(goods.cover.cover, 235, 314),
                                type: guangProcess.getProductIcon(goods.cover.maxSortId),
                                goods: []
                            };
                            let skns = [];
                            let arr = [];

                            goods.list.forEach((mini) => {
                                skns.push(mini.id);
                                arr[mini.id] = mini.src;
                            });

                            // 通过SKN获取商品信息
                            productDetailModel.productInfoBySkns(skns).then((product) => {
                                if (product && product.data && product.data.product_list) {
                                    let g = [];

                                    product.data.product_list.forEach(_ => {
                                        g.push(guangProcess.formatProduct(_, false, true, true, 235, 314, isApp, gender));
                                    });
                                    g.forEach(p => {
                                        if (arr[p.id]) {
                                            p.thumb = helpers.image(arr[p.id], 235, 314);
                                            good.goods.push(p);
                                        }
                                    });
                                    if (!build.collocation) {
                                        build.collocation = [];
                                    }
                                    build.collocation.push(good);
                                }
                                callArtGoodGroup(++ii, len2);
                            });
                        } else {
                            contents.push(build);
                            joinContentFunc(++i, len);
                        }
                    };

                    callArtGoodGroup(0, art.goodsGroup.data.length);
                } else if (art.link) { // 更多商品链接
                    build.moreLink = art.link.data[0].url;
                    contents.push(build);
                    joinContentFunc(++i, len);
                } else {
                    joinContentFunc(++i, len);
                }
            } else {
                resolve(contents);
            }
        };

        joinContentFunc(0, articleContent.length);
    });
};

/**
 * [处理品牌数据]
 * @param  {[array]} getBrand [品牌原数据]
 */
const _relatedBrand = (getBrand) => {
    let relatedBrand = getBrand;

    relatedBrand.forEach(brand => {
        brand.thumb = brand.thumb.replace('http://', '//');
    });
    return relatedBrand;
};

/**
 * [处理标签数据]
 * @param  {[array]} tags [标签原数据]
 * @param  {[Boolean]} isApp [是否app]
 */
const _relatedTag = (tags, isApp) => {
    let relatedTag = [];

    tags.forEach(value => {
        if (!isApp) {
            value.url = helpers.urlFormat('/tags/index', {
                query: value.name
            }, 'guang');
        }
        relatedTag.push(value);
    });
    return relatedTag;
};

/**
 * [处理相关文章数据]
 * @param  {[array]} getOtherArticle [相关文章原数据]
 * @param  {[Boolean]} isApp [是否app]
 */
const _relatedInfo = (getOtherArticle, isApp) => {
    let relatedInfo = [];

    getOtherArticle.forEach(value => {
        if (!isApp) {
            value.url = helpers.urlFormat('/info/index', {
                id: value.id
            }, 'guang');
        }
        value.thumb = helpers.image(value.thumb, 279, 175);
        relatedInfo.push(value);
    });
    return relatedInfo;
};

/**
 * [处理分享内容]
 * @param  {[int]} id [资讯id]
 * @param  {[array]} getArticle [资讯内容]
 */
const _shareInfo = (id, getArticle) => {
    let shareInfo = {};

    shareInfo.shareLink = helpers.urlFormat('/info/index', {
        id: id
    }, 'guang');
    shareInfo.shareTitle = getArticle.article_title;
    shareInfo.shareDesc = getArticle.article_summary;
    if (getArticle.cover_image_type === 1) {
        shareInfo.shareImg = helpers.image(getArticle.cover_image, 640, 640);
    } else {
        shareInfo.shareImg = helpers.image(getArticle.cover_image, 640, 320);
    }
    return shareInfo;
};

/**
 * [逛资讯详情页]
 */
const index = (req, res, next) => {
    let id = req.query.id || req.params.id,
        gender = req.query.gender || req.cookies._Channel && channels[req.cookies._Channel] || 1,
        isApp = req.query.app_version || req.query.appVersion || false, // 标识是不是APP访问的
        parameter = {},
        title = '逛';

        // pagecache 前端做
        // userAgent = req.get('User-Agent'),
        // isWeixin = userAgent.includes('MicroMessenger'); // 标识是否是微信访问

    // 判断参数是否有效, 无效会跳转到错误页面
    if (!stringProcess.isNumeric(id)) {
        res.json({ code: 400, message: '非法请求', data: '' });
        return;
    }
    parameter = {
        pageHeader: headerModel.setNav({
            navTitle: title
        })
    };

    // WAP上设置头部导航 pagecache
    // if (!isApp && !isWeixin) {
    //     parameter = {
    //         pageHeader: headerModel.setNav({
    //             navTitle: title
    //         })
    //     };
    // }

    // 获取详情内容信息, 异常则跳到错误页面
    return infoModel.packageData(id, isApp).then(detail => {
        let data = {
            guangDetail: true,
            guang: {}
        };

        if (detail.code !== 400) {
            if (!detail.getArticle) {
                // TODO 跳转到逛首页
                return;
            }

            // 作者信息数据
            if (detail && detail.getAuthor && (typeof detail.getAuthor.name !== 'undefined')) {
                data.guang.author = {
                    avatar: detail.getAuthor.avatar.replace('http://', '//'),
                    name: detail.getAuthor.name,
                    intro: detail.getAuthor.author_desc
                };

                // guang双头部的问题 20160601
                // 正确的URL
                data.guang.author.url = helpers.https(`${detail.getAuthor.url}&openby:yohobuy={"action":"go.h5","params":{"param":{},"share":"","id":${detail.getAuthor.author_id},"type":0,"islogin":"N","url":"${detail.getAuthor.url}"}}`);

                // 错误的URL
                // data.guang.author.url = helpers.https(`${detail.getAuthor.url}&openby:yohobuy={"action":"go.h5","params":{"param":{"id":"${detail.getAuthor.author_id}"},"share":"","id":${detail.getAuthor.author_id},"type":0,"islogin":"N","url":"${helpers.urlFormat('/author/index', {}, 'guang')}"}}`);
            }
            let guang = data.guang;

            guang.detail = {
                title: detail.getArticle.article_title,
                publishTime: detail.getArticle.publishTime,
                pageView: detail.getArticle.pageViews,
                content: []
            };


            if (detail.getArticleContent) {
                // 生成内容部分
                return _pageArticleContent(detail.getArticleContent, isApp, gender).then((contents) => {
                    guang.detail.content = contents;

                    // 相关品牌
                    if (detail.getBrand && detail.getBrand.length) {
                        guang.relatedBrand = _relatedBrand(detail.getBrand);
                    }

                    // 相关标签
                    if (detail.getArticle.tags && detail.getArticle.tags.length) {
                        guang.relatedTag = _relatedTag(detail.getArticle.tags, isApp);
                    }

                    // 相关文章
                    if (detail.getOtherArticle && detail.getOtherArticle.length) {
                        guang.relatedInfo = _relatedInfo(detail.getOtherArticle, isApp);
                    }

                    // 分享参数
                    if (detail.getArticle.cover_image) {
                        let shareInfo = _shareInfo(id, detail.getArticle);
                        Object.assign(guang, shareInfo);
                        data.title = detail.getArticle.article_title + ' | Yoho!Buy有货 | 潮流购物逛不停';
                        data.title_more = true;
                        data.description = detail.getArticle.article_summary;
                        data.description_more = true;
                    }

                    // 标识有微信分享
                    data.hasWxShare = true;
                    res.render('info/index', Object.assign({
                        page: 'info-index',
                        title: '逛',
                        gender: gender,
                        wechatShare: true
                    }, data, parameter));
                });
            } else {
                next();
                return;
            }

        }
    }).catch(next);
};

/**
 * [逛mini内容页]
 */
const mini = (req, res, next) => {
    let id = req.query.id,
        gender = req.query.gender || req.cookies._Channel && channels[req.cookies._Channel] || 1,
        isApp = req.query.app_version || req.query.appVersion || false; // 标识是不是APP访问的

    // 判断参数是否有效, 无效会跳转到错误页面
    if (!stringProcess.isNumeric(id)) {
        res.json({ code: 400, message: '非法请求', data: '' });
        return;
    }

    // 获取详情内容信息, 异常则跳到错误页面
    return infoModel.packageData(id, isApp).then(detail => {
        let data = {
            guangEzine: true,
            guang: {}
        };

        if (detail.code !== 400) {
            if (!detail.getArticle) {
                // TODO 跳转到逛首页
                return;
            }
            let guang = data.guang;

            guang.detail = {
                title: detail.getArticle.article_title,
                publishTime: detail.getArticle.publishTime,
                pageView: detail.getArticle.pageViews,
                content: []
            };


            if (detail.getArticleContent) {
                // 生成内容部分
                return _pageArticleContent(detail.getArticleContent, isApp, gender).then((contents) => {
                    guang.detail.content = contents;

                    // 相关品牌
                    if (detail.getBrand && detail.getBrand.length) {
                        guang.relatedBrand = _relatedBrand(detail.getBrand);
                    }

                    // 分享参数
                    if (detail.getArticle.cover_image) {
                        let shareInfo = _shareInfo(id, detail.getArticle);

                        Object.assign(guang, shareInfo);
                    }

                    // 标识有微信分享
                    data.hasWxShare = true;
                    res.render('info/index', Object.assign({
                        page: 'info-index',
                        title: '逛',
                        gender: gender,
                        wechatShare: true
                    }, data));
                });
            } else {
                next();
                return;
            }

        }
    }).catch(next);
};

/**
 * [提供给YOHO资讯站调用的接口]
 */
const foryoho = (req, res, next) => {
    let id = req.query.id,
        gender = req.query.gender || req.cookies._Channel && channels[req.cookies._Channel] || 1,
        isApp = req.query.app_version || req.query.appVersion || false; // 标识是不是APP访问的

    // 判断参数是否有效, 无效会跳转到错误页面
    if (!stringProcess.isNumeric(id)) {
        res.json({ code: 400, message: '非法请求', data: '' });
        return;
    }

    // 获取详情内容信息, 异常则跳到错误页面
    return infoModel.packageData(id, isApp).then(detail => {
        let data = {};

        if (detail.code !== 400) {
            if (!detail.getArticle) {
                // TODO 跳转到逛首页
                return;
            }
            data.brand = detail.getBrand;

            if (detail.getArticleContent) {
                // 生成内容部分
                return _pageArticleContent(detail.getArticleContent, isApp, gender).then((contents) => {
                    data.content = contents;

                    // 内容中的相关推荐和悬浮商品移到data层级
                    let relatedRecoIndex = data.content.findIndex((cont) => {
                        return typeof cont.relatedReco !== 'undefined';
                    });

                    let collocationIndex = data.content.findIndex((cont) => {
                        return typeof cont.collocation !== 'undefined';
                    });

                    if (relatedRecoIndex > 0) {
                        data.goods = data.content[relatedRecoIndex].relatedReco;
                        data.content.splice(relatedRecoIndex, 1);
                    }
                    if (collocationIndex > 0) {
                        data.group = data.content[collocationIndex].collocation;
                        data.content.splice(collocationIndex, 1);
                    }
                    res.json(data);
                });
            } else {
                next();
                return;
            }

        }
    }).catch(next);
};

module.exports = {
    index,
    mini,
    foryoho
};