/**

 * 微信小程序组件/页面 WXSS 不支持本地 background-image，

 * 将 /static/images/ 背景图改为 <image> 标签，并清理 CSS。

 */

const fs = require('fs');

const path = require('path');



const root = path.join(__dirname, '..');



const COMPONENT_MAP = {

    MemberInfoStatusBar: 'member-info-status-bar.css',

    MemberInfoHeader: 'member-info-header.css',

    MemberInfoMemberCard: 'member-info-member-card.css',

    MemberInfoQuickActions: 'member-info-quick-actions.css',

    MemberInfoBookingList: 'member-info-booking-list.css',

    MemberInfoCheckInList: 'member-info-check-in-list.css',

    MemberInfoBodyReport: 'member-info-body-report.css',

    MemberInfoCouponPoints: 'member-info-coupon-points.css',

    MemberInfoReferral: 'member-info-referral.css',

    MemberInfoSettings: 'member-info-settings.css',

    MemberInfoLogout: 'member-info-logout.css'

};



const PAGE_MAP = {

    booking: ['booking-pixso.css'],

    memberCard: ['member-card-pixso.css'],

    userInfo: ['user-info-pixso.css']

};



function extractBgImages(css) {

    const map = new Map();

    const ruleRe = /^\.([a-zA-Z0-9_-]+)\s*\{([^}]*)\}/gm;

    let match;

    while ((match = ruleRe.exec(css)) !== null) {

        const className = match[1];

        const body = match[2];

        const urlMatch = body.match(/background-image:\s*url\(\/static\/images\/([^)]+)\)/);

        if (urlMatch) {

            map.set(className, `/static/images/${urlMatch[1]}`);

        }

    }

    return map;

}



function ensureImageDisplay(css, className) {

    const ruleRe = new RegExp(`(\\.${className.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}\\s*\\{)([^}]*)(\\})`);

    return css.replace(ruleRe, (full, head, body, tail) => {

        if (/display:\s*block/.test(body)) return full;

        return `${head}${body.trim()}\n    display: block;\n${tail}`;

    });

}



function getMode(className) {

    if (/avatar|banner|photo|card-preview|AC\d/i.test(className)) return 'aspectFill';

    return 'aspectFit';

}



function replaceViewWithImage(template, className, src) {

    const mode = getMode(className);

    const imageTag = `<image class="${className}" src="${src}" mode="${mode}" />`;

    const escaped = className.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');



    const patterns = [

        new RegExp(`<view\\s+class="${escaped}"\\s*></view>`, 'g'),

        new RegExp(`<view\\s+class="${escaped}"\\s*/>`, 'g'),

        new RegExp(`<view\\s+class="${escaped}"\\s*>\\s*</view>`, 'g'),

        new RegExp(`<view\\s+\\n\\s*class="${escaped}"\\s*\\n\\s*></view>`, 'g'),

        new RegExp(`<view\\s+\\n\\s*class="${escaped}"\\s*\\n\\s*/>`, 'g'),

        new RegExp(`<view\\s+[^>]*class="${escaped}"[^>]*>\\s*</view>`, 'g')

    ];



    let result = template;

    for (const re of patterns) {

        result = result.replace(re, imageTag);

    }

    return result;

}



function stripAllLocalBgFromCss(css) {

    let next = css;

    next = next.replace(/background-image:\s*url\(\/static\/images\/[^)]+\);/g, '');

    next = next.replace(/\n\s*background-size:\s*100%\s*100%;/g, '');

    next = next.replace(/\n\s*background-repeat:\s*no-repeat;/g, '');

    return next;

}



function convertPair(vuePath, cssPath) {

    if (!fs.existsSync(vuePath) || !fs.existsSync(cssPath)) return;



    let css = fs.readFileSync(cssPath, 'utf8');

    const hadLocalBg = /background-image:\s*url\(\/static\/images\//.test(css);

    if (!hadLocalBg) return;



    const bgMap = extractBgImages(css);

    let template = fs.readFileSync(vuePath, 'utf8');

    const templateMatch = template.match(/<template>([\s\S]*?)<\/template>/);

    if (!templateMatch) {

        css = stripAllLocalBgFromCss(css);

        fs.writeFileSync(cssPath, css, 'utf8');

        console.log('css-only (no template)', path.relative(root, cssPath));

        return;

    }



    let inner = templateMatch[1];

    let changed = false;



    for (const [className, src] of bgMap.entries()) {

        const before = inner;

        inner = replaceViewWithImage(inner, className, src);

        if (inner !== before) {

            changed = true;

            css = ensureImageDisplay(css, className);

        }

    }



    css = stripAllLocalBgFromCss(css);



    if (changed) {

        template = template.replace(templateMatch[1], inner);

        fs.writeFileSync(vuePath, template, 'utf8');

    }

    fs.writeFileSync(cssPath, css, 'utf8');

    console.log(

        changed ? 'converted' : 'css-only',

        path.relative(root, vuePath),

        `(${bgMap.size} rules stripped)`

    );

}



for (const [name, cssFile] of Object.entries(COMPONENT_MAP)) {

    convertPair(

        path.join(root, 'components/memberInfo', `${name}.vue`),

        path.join(root, 'common/style/memberInfo', cssFile)

    );

}



for (const [page, cssFiles] of Object.entries(PAGE_MAP)) {

    for (const cssFile of cssFiles) {

        convertPair(

            path.join(root, 'pages/memberInfo', `${page}.vue`),

            path.join(root, 'common/style/memberInfo/pages', cssFile)

        );

    }

}



console.log('done');