/**
 * 跨平台跳转测试: H5 / 微信小程序 / 鸿蒙元服务 / 华为快应用
 *
 * 覆盖目标:
 *   - getPlatform() 在 4 个环境下都识别正确
 *   - _safeEncodeForPlatform 在 4 个环境下都"主动 encode 一次"
 *   - _navigateTo 在 4 个环境下走对应的 API
 *   - diyRedirectTo 外部链接分支:
 *     - H5: location.href 直接跳
 *     - 微信/鸿蒙/快应用: 跳到 webview 容器
 *   - redirectTo tabBar 列表命中:
 *     - 微信/快应用: switchTab
 *     - 鸿蒙: reLaunch 兜底
 *     - H5: 走 location.href
 *
 * 跑法:
 *   node --test tests/cross-platform.test.js
 */

'use strict';

const test = require('node:test');
const assert = require('node:assert/strict');

// =============================================================
//  被测源码区块(与 common/js/util.js 保持同步)
// =============================================================

/**
 * 平台检测(简化版,覆盖 4 个目标平台)
 */
function detectPlatform(runtime) {
    // 1) 测试覆盖
    if (runtime && runtime.__platform) return runtime.__platform;

    // 2) 编译时变量(由 HBuilder/uniapp 注入)
    if (runtime && runtime.isH5) return 'h5';
    if (runtime && runtime.isMpWeixin) return 'mp-weixin';
    if (runtime && runtime.isMpHarmony) return 'mp-harmony';
    if (runtime && runtime.isQuickapp) return 'quickapp';

    // 3) 运行时: window + 无 uni → h5
    if (runtime && runtime.hasWindow && !runtime.hasUni) return 'h5';
    if (runtime && runtime.systemInfo) {
        const p = runtime.systemInfo.platform || '';
        if (/harmony|ohos/i.test(p)) return 'mp-harmony';
        if (runtime.systemInfo.mp) return 'mp-weixin';
        // 华为快应用(H5 嵌入快应用 Webview): systemInfo.platform 含 'quickapp' 或 'huawei'
        if (/quickapp|huawei/i.test(p)) return 'quickapp';
    }

    // 4) 兜底
    return 'h5';
}

function getPlatform(runtime) {
    return detectPlatform(runtime);
}

function shouldEncodeUrl() {
    return true; // 4 个平台都是
}

/**
 * 按平台的 safeEncode(简化版,跟真实 util.js 的 _safeEncodeForPlatform 同语义)
 */
function safeEncodeForPlatform(v, platform) {
    const s = typeof v === 'string' ? v : JSON.stringify(v);
    let once = s;
    try {
        if (/%[0-9a-fA-F]{2}/.test(s)) {
            once = decodeURIComponent(s);
        }
    } catch (e) {
        once = s;
    }
    // 4 个平台都主动 encode
    return encodeURIComponent(once);
}

/**
 * 跨平台跳转调度(简化版)
 */
function navigateToImpl({ to, mode, platform, uni, window }) {
    if (platform === 'h5') {
        if (!window || !window.location) {
            return { api: 'noop', reason: 'no window' };
        }
        if (mode === 'reLaunch' || mode === 'redirectTo') {
            window.location.replace(to);
        } else {
            window.location.href = to;
        }
        return { api: 'window.location', mode };
    }

    if (!uni) {
        return { api: 'noop', reason: 'no uni' };
    }

    let api = 'navigateTo';
    switch (mode) {
        case 'tabbar':
        case 'switchTab':
            // 鸿蒙元服务: switchTab 静默失败, 用 reLaunch 兜底
            if (platform === 'mp-harmony') {
                uni.reLaunch({ url: to });
                api = 'reLaunch';
            } else {
                uni.switchTab({ url: to });
                api = 'switchTab';
            }
            break;
        case 'redirectTo':
            uni.redirectTo({ url: to });
            api = 'redirectTo';
            break;
        case 'reLaunch':
            uni.reLaunch({ url: to });
            api = 'reLaunch';
            break;
        case 'navigateTo':
        default:
            uni.navigateTo({ url: to });
            api = 'navigateTo';
            break;
    }
    return { api, mode };
}

/**
 * diyRedirectTo 外部链接分支(简化版)
 */
function diyRedirectToExternalLink(link, ctx) {
    const { platform, uni, window } = ctx;
    // 简化:假设 link.wap_url 已是干净 URL
    const url = link.wap_url;
    if (platform === 'h5') {
        return navigateToImpl({ to: url, mode: 'navigateTo', platform, uni, window });
    }
    // 其他平台: 跳到 webview 容器,url 作为 src
    return navigateToImpl({
        to: '/pages_tool/webview/webview?src=' + safeEncodeForPlatform(url, platform),
        mode: 'navigateTo',
        platform, uni, window,
    });
}

// =============================================================
//  Mock 工具
// =============================================================
function createContext(platform) {
    const calls = { navigateTo: [], redirectTo: [], reLaunch: [], switchTab: [] };
    // 用真正的 location 对象,属性赋值会同步
    const locationObj = { href: '', _replaced: '' };
    locationObj.replace = function (u) { locationObj._replaced = u; locationObj.href = u; };
    const ctx = {
        platform,
        runtime: { __platform: platform },
        uni: {
            navigateTo(opts) { calls.navigateTo.push(opts); },
            redirectTo(opts) { calls.redirectTo.push(opts); },
            reLaunch(opts) { calls.reLaunch.push(opts); },
            switchTab(opts) { calls.switchTab.push(opts); },
        },
        window: {
            get location() { return locationObj; },
            getCurrentLocation() { return locationObj.href; },
        },
        calls,
    };
    return ctx;
}

// =============================================================
//  1. 平台检测
// =============================================================
test('getPlatform: 4 个平台都识别正确', () => {
    assert.equal(getPlatform({ __platform: 'h5' }), 'h5');
    assert.equal(getPlatform({ __platform: 'mp-weixin' }), 'mp-weixin');
    assert.equal(getPlatform({ __platform: 'mp-harmony' }), 'mp-harmony');
    assert.equal(getPlatform({ __platform: 'quickapp' }), 'quickapp');
});

test('getPlatform: 编译时变量也能识别', () => {
    assert.equal(getPlatform({ isH5: true }), 'h5');
    assert.equal(getPlatform({ isMpWeixin: true }), 'mp-weixin');
    assert.equal(getPlatform({ isMpHarmony: true }), 'mp-harmony');
    assert.equal(getPlatform({ isQuickapp: true }), 'quickapp');
});

test('getPlatform: 运行时特征(鸿蒙/微信)识别', () => {
    // 鸿蒙: systemInfo.platform 含 harmony
    assert.equal(getPlatform({
        systemInfo: { platform: 'harmonyos' }
    }), 'mp-harmony');
    assert.equal(getPlatform({
        systemInfo: { platform: 'ohos' }
    }), 'mp-harmony');
    // 微信: systemInfo.mp === true
    assert.equal(getPlatform({
        systemInfo: { mp: true, platform: 'devtools' }
    }), 'mp-weixin');
});

test('getPlatform: 有 window 没 uni → h5', () => {
    assert.equal(getPlatform({ hasWindow: true, hasUni: false }), 'h5');
});

test('getPlatform: 兜底 h5', () => {
    assert.equal(getPlatform({}), 'h5');
    assert.equal(getPlatform(null), 'h5');
    assert.equal(getPlatform(undefined), 'h5');
});

test('getPlatform: 华为快应用 = H5 嵌入快应用 Webview,通过 systemInfo.platform 识别', () => {
    // 快应用底层是 H5 浏览器语义,但 uni 全局可用
    // 识别方式: systemInfo.platform 含 'quickapp' 或 'huawei'
    assert.equal(getPlatform({
        systemInfo: { platform: 'quickapp' }
    }), 'quickapp');
    assert.equal(getPlatform({
        systemInfo: { platform: 'huawei' }
    }), 'quickapp');
    assert.equal(getPlatform({
        systemInfo: { platform: 'HarmonyOS' }   // 鸿蒙
    }), 'mp-harmony');
    // systemInfo 是 devtools 字符串(不是 quickapp/huawei/harmony),回退到 h5
    // (因为没有 mp 标志,也没明确平台)
    assert.equal(getPlatform({
        systemInfo: { platform: 'devtools' }
    }), 'h5');
});

// =============================================================
//  2. shouldEncodeUrl
// =============================================================
test('shouldEncodeUrl: 4 个平台都为 true', () => {
    // 关键事实: 4 个平台都需要 JS 侧主动 encode
    // (历史误以为"非 H5 不需要",实测微信/鸿蒙/快应用都不二次 encode)
    for (const p of ['h5', 'mp-weixin', 'mp-harmony', 'quickapp']) {
        assert.equal(shouldEncodeUrl(), true, `${p} 平台应该 encode`);
    }
});

// =============================================================
//  3. safeEncode 跨平台一致性
// =============================================================
test('safeEncode: 4 个平台对普通字符串 encode 行为一致', () => {
    for (const p of ['h5', 'mp-weixin', 'mp-harmony', 'quickapp']) {
        const r1 = safeEncodeForPlatform('hello', p);
        assert.equal(r1, 'hello', `${p} 普通字符串不变`);
        const r2 = safeEncodeForPlatform('`表单`', p);
        assert.equal(r2, '%60%E8%A1%A8%E5%8D%95%60', `${p} 反引号应被 encode`);
        const r3 = safeEncodeForPlatform('a&b', p);
        assert.equal(r3, 'a%26b', `${p} & 应被 encode`);
    }
});

test('safeEncode: 4 个平台对已编码字符串不双编码', () => {
    // 上游已经 encode 过一次的入参(防御)
    for (const p of ['h5', 'mp-weixin', 'mp-harmony', 'quickapp']) {
        const r = safeEncodeForPlatform('%E8%A1%A8', p);  // '表' 已编码
        assert.equal(r, '%E8%A1%A8', `${p} decode roundtrip + re-encode 不应双编码`);
    }
});

test('safeEncode: src 内嵌 URL 的 & 在 4 个平台都被 encode(防微信丢参数)', () => {
    const src = 'https://host.com/x?a=1&b=2&c=3';
    for (const p of ['h5', 'mp-weixin', 'mp-harmony', 'quickapp']) {
        const r = safeEncodeForPlatform(src, p);
        // & 必须变 %26
        assert.ok(!r.includes('&'), `${p} src 不应含裸 &: ${r}`);
        assert.ok(r.includes('%26'), `${p} src 应含 %26: ${r}`);
    }
});

// =============================================================
//  4. _navigateTo 跨平台调度
// =============================================================
test('_navigateTo: H5 用 window.location', () => {
    const ctx = createContext('h5');
    const r = navigateToImpl({ to: '/pages/detail', mode: 'navigateTo', ...ctx });
    assert.equal(r.api, 'window.location');
    assert.equal(ctx.window.getCurrentLocation(), '/pages/detail');
});

test('_navigateTo: H5 redirectTo/reLaunch 用 location.replace', () => {
    const ctx = createContext('h5');
    navigateToImpl({ to: '/a', mode: 'redirectTo', ...ctx });
    assert.equal(ctx.window.getCurrentLocation(), '/a');
    navigateToImpl({ to: '/b', mode: 'reLaunch', ...ctx });
    assert.equal(ctx.window.getCurrentLocation(), '/b');
});

test('_navigateTo: 微信小程序默认调 uni.navigateTo', () => {
    const ctx = createContext('mp-weixin');
    navigateToImpl({ to: '/pages/detail', mode: 'navigateTo', ...ctx });
    assert.equal(ctx.calls.navigateTo.length, 1);
    assert.equal(ctx.calls.navigateTo[0].url, '/pages/detail');
});

test('_navigateTo: 微信小程序 redirectTo/reLaunch 调对应 API', () => {
    const ctx = createContext('mp-weixin');
    navigateToImpl({ to: '/a', mode: 'redirectTo', ...ctx });
    assert.equal(ctx.calls.redirectTo.length, 1);
    navigateToImpl({ to: '/b', mode: 'reLaunch', ...ctx });
    assert.equal(ctx.calls.reLaunch.length, 1);
});

test('_navigateTo: 微信小程序 tabBar 调 uni.switchTab', () => {
    const ctx = createContext('mp-weixin');
    navigateToImpl({ to: '/pages/index/index', mode: 'tabbar', ...ctx });
    assert.equal(ctx.calls.switchTab.length, 1);
    assert.equal(ctx.calls.reLaunch.length, 0);
});

test('_navigateTo: 鸿蒙元服务 tabBar 兜底用 reLaunch(不用 switchTab)', () => {
    const ctx = createContext('mp-harmony');
    navigateToImpl({ to: '/pages/index/index', mode: 'tabbar', ...ctx });
    // 关键: 鸿蒙用 reLaunch,不用 switchTab
    assert.equal(ctx.calls.switchTab.length, 0, '鸿蒙不用 switchTab');
    assert.equal(ctx.calls.reLaunch.length, 1, '鸿蒙用 reLaunch 兜底');
});

test('_navigateTo: 鸿蒙元服务普通跳转用 uni.navigateTo', () => {
    const ctx = createContext('mp-harmony');
    navigateToImpl({ to: '/pages/detail', mode: 'navigateTo', ...ctx });
    assert.equal(ctx.calls.navigateTo.length, 1);
});

test('_navigateTo: 华为快应用 tabBar 调 uni.switchTab', () => {
    const ctx = createContext('quickapp');
    navigateToImpl({ to: '/pages/index/index', mode: 'tabbar', ...ctx });
    assert.equal(ctx.calls.switchTab.length, 1);
    assert.equal(ctx.calls.reLaunch.length, 0);
});

test('_navigateTo: 华为快应用普通跳转调 uni.navigateTo', () => {
    const ctx = createContext('quickapp');
    navigateToImpl({ to: '/pages/detail', mode: 'navigateTo', ...ctx });
    assert.equal(ctx.calls.navigateTo.length, 1);
});

test('_navigateTo: 非 H5 但没有 uni 全局 → noop(不报错)', () => {
    const ctx = createContext('mp-weixin');
    delete ctx.uni;  // 模拟非 H5 但 uni 不存在(SSR / Node 环境)
    const r = navigateToImpl({ to: '/x', mode: 'navigateTo', ...ctx });
    assert.equal(r.api, 'noop');
    assert.equal(r.reason, 'no uni');
});

test('_navigateTo: H5 但没有 window → noop(不报错)', () => {
    const ctx = createContext('h5');
    delete ctx.window;
    const r = navigateToImpl({ to: '/x', mode: 'navigateTo', ...ctx });
    assert.equal(r.api, 'noop');
    assert.equal(r.reason, 'no window');
});

// =============================================================
//  5. diyRedirectTo 外部链接分支 跨平台
// =============================================================
test('diyRedirectTo 外部链接: H5 直接跳完整 URL,不走 webview 容器', () => {
    const ctx = createContext('h5');
    const r = diyRedirectToExternalLink({
        wap_url: 'https://host.com/x?a=1',
    }, ctx);
    // H5: 直接 location.href = url, 不应跳到 webview 容器
    assert.equal(r.api, 'window.location');
    assert.equal(ctx.window.getCurrentLocation(), 'https://host.com/x?a=1');
    assert.equal(ctx.calls.navigateTo.length, 0);
});

test('diyRedirectTo 外部链接: 微信跳到 webview 容器,url 作为 src', () => {
    const ctx = createContext('mp-weixin');
    const r = diyRedirectToExternalLink({
        wap_url: 'https://host.com/x?a=1',
    }, ctx);
    assert.equal(r.api, 'navigateTo');
    assert.equal(ctx.calls.navigateTo.length, 1);
    const url = ctx.calls.navigateTo[0].url;
    assert.ok(url.startsWith('/pages_tool/webview/webview?src='),
        '应跳到 webview: ' + url);
    // src 应被 encode,不含裸 &
    const srcMatch = url.match(/[?&]src=([^&]+)/);
    assert.ok(srcMatch);
    assert.ok(!srcMatch[1].includes('&'), 'src 不应含裸 &: ' + url);
});

test('diyRedirectTo 外部链接: 鸿蒙跳到 webview 容器(走 uni.navigateTo)', () => {
    const ctx = createContext('mp-harmony');
    diyRedirectToExternalLink({ wap_url: 'https://host.com/x' }, ctx);
    assert.equal(ctx.calls.navigateTo.length, 1);
    const url = ctx.calls.navigateTo[0].url;
    assert.ok(url.startsWith('/pages_tool/webview/webview?'));
});

test('diyRedirectTo 外部链接: 华为快应用跳到 webview 容器(走 uni.navigateTo)', () => {
    const ctx = createContext('quickapp');
    diyRedirectToExternalLink({ wap_url: 'https://host.com/x' }, ctx);
    assert.equal(ctx.calls.navigateTo.length, 1);
    const url = ctx.calls.navigateTo[0].url;
    assert.ok(url.startsWith('/pages_tool/webview/webview?'));
});

// =============================================================
//  6. 完整的端到端: 4 个平台走完,链接不丢参数
// =============================================================
test('端到端: 4 平台 — 你的真实 link 走完跳转,参数全部保留', () => {
    const dirtyLink = {
        name: 'CUSTOM_LINK',
        title: '表单',
        wap_url: '`https://xcx3.aigc-quickapp.com/hwappx/common/pages_tool/form/formdata`',
        enable_set_title: 0,
        parent: 'CUSTOM_LINK',
        page_params: { id: '130', uniacid: '2482' },
    };

    for (const p of ['h5', 'mp-weixin', 'mp-harmony', 'quickapp']) {
        const ctx = createContext(p);
        // H5: location.href 跳完整 url,不丢任何参数
        if (p === 'h5') {
            const url = dirtyLink.wap_url.replace(/`/g, '').trim() + '?id=130&uniacid=2482';
            navigateToImpl({ to: url, mode: 'navigateTo', ...ctx });
            assert.equal(ctx.window.getCurrentLocation(), url,
                `H5 完整 url 应被设置: ${url}`);
        } else {
            // 其他平台: 跳到 webview 容器,url 作为 src
            const cleanUrl = dirtyLink.wap_url.replace(/`/g, '').trim() + '?id=130&uniacid=2482';
            const webviewUrl = '/pages_tool/webview/webview?src='
                + safeEncodeForPlatform(cleanUrl, p)
                + '&id=130&uniacid=2482';
            navigateToImpl({ to: webviewUrl, mode: 'navigateTo', ...ctx });
            const url = ctx.calls.navigateTo[0].url;
            // 关键: 所有 key 都在
            const queryStr = url.substring(url.indexOf('?') + 1);
            const keys = queryStr.split('&').map(kv => kv.split('=')[0]);
            assert.ok(keys.includes('src'), `${p} 应含 src: ${url}`);
            assert.ok(keys.includes('id'), `${p} 应含 id: ${url}`);
            assert.ok(keys.includes('uniacid'), `${p} 应含 uniacid: ${url}`);
        }
    }
});

// =============================================================
//  7. 防御性边界
// =============================================================
test('safeEncode: null/undefined 不报错', () => {
    for (const p of ['h5', 'mp-weixin', 'mp-harmony', 'quickapp']) {
        const r1 = safeEncodeForPlatform(null, p);
        const r2 = safeEncodeForPlatform(undefined, p);
        // null/undefined 走 JSON.stringify → 'null' / undefined 走 '' 路径
        assert.ok(typeof r1 === 'string', `${p} null 应返回字符串`);
        assert.ok(typeof r2 === 'string', `${p} undefined 应返回字符串`);
    }
});

test('safeEncode: 数字 0 / 布尔 false 都正确', () => {
    for (const p of ['h5', 'mp-weixin', 'mp-harmony', 'quickapp']) {
        assert.equal(safeEncodeForPlatform(0, p), '0', `${p} 0 → 0`);
        assert.equal(safeEncodeForPlatform(false, p), 'false', `${p} false → false`);
    }
});

test('safeEncode: 对象走 JSON.stringify 路径', () => {
    for (const p of ['h5', 'mp-weixin', 'mp-harmony', 'quickapp']) {
        const r = safeEncodeForPlatform({ id: '130' }, p);
        // encodeURIComponent('{"id":"130"}') = %7B%22id%22%3A%22130%22%7D
        assert.equal(r, '%7B%22id%22%3A%22130%22%7D', `${p} 对象序列化`);
    }
});

test('navigateTo: 4 平台 url 都正确传过去', () => {
    for (const p of ['h5', 'mp-weixin', 'mp-harmony', 'quickapp']) {
        const ctx = createContext(p);
        navigateToImpl({ to: '/pages/detail?id=1&title=hello', mode: 'navigateTo', ...ctx });
        if (p === 'h5') {
            assert.equal(ctx.window.getCurrentLocation(), '/pages/detail?id=1&title=hello');
        } else {
            assert.equal(ctx.calls.navigateTo[0].url, '/pages/detail?id=1&title=hello');
        }
    }
});