/*
# 2024-09-16
# 京东比价
# 仅适用于京东App版本≤V12.4.3
# 脚本修改来源 https://raw.githubusercontent.com/githubdulong/Script/master/jd_price2.sgmodule

# 1. 修复比价接口
# 2. 之前只能QX，Surge，更换为Env,兼容Loon等，仅测试QX

[rewrite_local]
^https?:\/\/api\.m\.jd\.com/client\.action\?functionId=(wareBusiness|serverConfig|basicConfig) url script-response-body https://raw.githubusercontent.com/wf021325/qx/master/js/jd_price.js
[mitm]
hostname = api.m.jd.com
*/

const path1 = "serverConfig";
const path2 = "wareBusiness";
const path3 = "basicConfig";
const consolelog = false;
const url = $request.url;
const body = $response.body;
const $ = new Env("京东比价");

if (url.indexOf(path1) != -1) {
    let obj = JSON.parse(body);
    delete obj.serverConfig.httpdns;
    delete obj.serverConfig.dnsvip;
    delete obj.serverConfig.dnsvip_v6;
    $done({body: JSON.stringify(obj)});
}

if (url.indexOf(path3) != -1) {
    let obj = JSON.parse(body);
    let JDHttpToolKit = obj.data.JDHttpToolKit;
    if (JDHttpToolKit) {
        delete obj.data.JDHttpToolKit.httpdns;
        delete obj.data.JDHttpToolKit.dnsvipV6;
    }
    $done({body: JSON.stringify(obj)});
}

if (url.indexOf(path2) !== -1) {
    let obj = JSON.parse(body);
    if (Number(obj?.code) > 0 && Number(obj?.wait) > 0) {
        $.msg('灰灰提示，可能被风控，请勿频繁操作', '', obj?.tips);
        $done({body});
    }
    const floors = obj.floors;
    const commodity_info = floors[floors.length - 1];
    const shareUrl = commodity_info.data.property.shareUrl;

    request_history_price(shareUrl).then(data => {
        if (data) {
            const lowerword = adword_obj();
            lowerword.data.ad.textColor = "#fe0000";
            let bestIndex = floors.findIndex(element =>
                element.mId === lowerword.mId || element.sortId > lowerword.sortId
            );
            bestIndex = bestIndex === -1 ? floors.length : bestIndex;

            if (data.ok === 1 && data.single) {
                const lower = lowerMsgs(data.single);
                const detail = priceSummary(data);
                const tip = data.PriceRemark.Tip + "(仅供参考)";
                lowerword.data.ad.adword = `${lower} ${tip}\n${detail}`;
            } else if (data.ok === 0 && data.msg.length > 0) {
                lowerword.data.ad.adword = "慢慢买提示您：" + data?.msg;
            }
            floors.splice(bestIndex, 0, lowerword);
            $done({body: JSON.stringify(obj)});
        } else {
            $done({body});
        }
    }).catch(() => {
        $done({body});
    });
}

function lowerMsgs(single) {
    const lower = single.lowerPriceyh
    const timestamp = parseInt(single.lowerDateyh.match(/\d+/), 10);
    const lowerDate = $.time('yyyy-MM-dd', timestamp);
    const lowerMsg = "历史最低:¥" + String(lower) + `(${lowerDate}) `
    return lowerMsg
}

function priceSummary(data) {
    let summary = "";
    let listPriceDetail = data.PriceRemark.ListPriceDetail.slice(0, 4);
    let list = listPriceDetail.concat(historySummary(data.single));
    list.forEach(item => {
        const nameMap = {
            "双11价格": "双十一价格",
            "618价格": "六一八价格"
        };
        item.Name = nameMap[item.Name] || item.Name;
        Delimiter = '        ';
        summary += `\n${item.Name}${Delimiter}${item.Price}${Delimiter}${item.Date}${Delimiter}${item.Difference}`;
    });
    return summary;
}

function historySummary(single) {
    let currentPrice, lowest30, lowest90, lowest180, lowest360;
    const singleArray = JSON.parse(`[${single.jiagequshiyh}]`);
    const singleFormatted = singleArray.map(item => ({
        Date: item[0],
        Price: item[1],
        Name: item[2]
    }));
    let list = singleFormatted.reverse().slice(0, 360); // 取最近 360 天数据

    const createLowest = (name, price, date) => ({
        Name: name,
        Price: `¥${String(price)}`,
        Date: date,
        Difference: difference(currentPrice, price),
        price
    });
    list.forEach((item, index) => {
        const date = $.time('yyyy-MM-dd', item.Date)
        let price = item.Price;
        if (index === 0) {
            currentPrice = price;
            lowest30 = createLowest("三十天最低", price, date);
            lowest90 = createLowest("九十天最低", price, date);
            lowest180 = createLowest("一百八最低", price, date);
            lowest360 = createLowest("三百六最低", price, date);
        }
        const updateLowest = (lowest, days) => {
            if (index < days && price < lowest.price) {
                lowest.price = price;
                lowest.Price = `¥${String(price)}`;
                lowest.Date = date;
                lowest.Difference = difference(currentPrice, price);
            }
        };
        updateLowest(lowest30, 30);
        updateLowest(lowest90, 90);
        updateLowest(lowest180, 180);
        updateLowest(lowest360, 360);
    });
    return [lowest30, lowest90, lowest180, lowest360];
}

function difference(currentPrice, price, precision = 2) {
    const diff = (parseFloat(currentPrice) - parseFloat(price)).toFixed(precision);
    return diff == 0 ? "-" : `${diff > 0 ? "↑" : "↓"}${Math.abs(diff)}`;
}


function request_history_price(share_url) {
    return new Promise((resolve, reject) => {
        const options = {
            url: "https://apapia-history.manmanbuy.com/ChromeWidgetServices/WidgetServices.ashx",
            headers: {
                "Content-Type": "application/x-www-form-urlencoded; charset=utf-8",
                "User-Agent": "iPhone/CFNetwork/Darwin"
            },
            body: 'methodName=getHistoryTrend&p_url=' + encodeURIComponent(share_url)
        };
        $.post(options, (error, response, data) => {
            if (error) {
                consolelog && console.log("Error:\n" + error);
                reject(error);
            } else {
                consolelog && console.log("Data:\n" + data);
                resolve(JSON.parse(data));
            }
        });
    });
}

function adword_obj() {
    return {
        "bId": "eCustom_flo_199",
        "cf": {
            "bgc": "#ffffff",
            "spl": "empty"
        },
        "data": {
            "ad": {
                "adword": "",
                "textColor": "#8C8C8C",
                "color": "#f23030",
                "newALContent": true,
                "hasFold": true,
                "adLinkContent": "",
                "adLink": ""
            }
        },
        "mId": "bpAdword",
        "refId": "eAdword_0000000028",
        "sortId": 13,
        "overHeight": 0,
        "overlayToViewHeight": 0,
        "taroDegrade": false
    }
}

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