import { createHash } from 'node:crypto';
import { readFile, readdir, stat } from 'node:fs/promises';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

const scriptDirectory = path.dirname(fileURLToPath(import.meta.url));
const root = path.resolve(scriptDirectory, '..');
const cpDirectory = path.join(root, 'activity', 'cp');
const pageDirectory = path.join(cpDirectory, 'huwaa');
const assetDirectory = path.join(pageDirectory, 'assets', 'layers');
const manifestPath = path.join(assetDirectory, 'manifest.json');

const expectedEntryFrames = {
    plaza: '831:3320',
    rank: '831:4048',
    rewards: '831:3913',
};
const expectedDesignSizes = {
    plaza: { width: 1080, height: 4283 },
    rank: { width: 1080, height: 3733 },
    rewards: { width: 1080, height: 4782 },
};
const forbiddenAggregateNodes = new Set([
    '543:1998',
    '823:3005',
    '831:3320',
    '831:4048',
    '831:3913',
    '831:3323',
    '831:3326',
    '831:3339',
    '831:3349',
    '831:3642',
    '831:4381',
    '831:3942',
]);

function invariant(condition, message) {
    if (!condition) throw new Error(message);
}

const manifest = JSON.parse(await readFile(manifestPath, 'utf8'));
invariant(manifest.schemaVersion === 1, 'Unsupported manifest schema');
invariant(
    manifest.figma?.fileKey === 'OTOg5cwbhVNWxkImGmzTJl',
    'Unexpected Figma file key'
);
invariant(manifest.figma?.canvas?.id === '543:1998', 'Unexpected Figma canvas');
invariant(
    JSON.stringify(manifest.figma?.entryFrames) ===
        JSON.stringify(expectedEntryFrames),
    'Huwaa CP entry-frame mapping changed'
);
invariant(
    JSON.stringify(manifest.figma?.designSizes) ===
        JSON.stringify(expectedDesignSizes),
    'Huwaa CP design sizes changed'
);
invariant(Array.isArray(manifest.assets), 'Manifest assets must be an array');
invariant(manifest.assets.length === 17, 'Manifest must describe 17 layers');

function webPDimensions(bytes) {
    invariant(
        bytes.subarray(0, 4).toString('ascii') === 'RIFF' &&
            bytes.subarray(8, 12).toString('ascii') === 'WEBP',
        'Asset is not a WebP file'
    );
    const chunk = bytes.subarray(12, 16).toString('ascii');
    if (chunk === 'VP8X') {
        return {
            width: bytes.readUIntLE(24, 3) + 1,
            height: bytes.readUIntLE(27, 3) + 1,
        };
    }
    if (chunk === 'VP8 ') {
        return {
            width: bytes.readUInt16LE(26) & 0x3fff,
            height: bytes.readUInt16LE(28) & 0x3fff,
        };
    }
    if (chunk === 'VP8L') {
        invariant(bytes[20] === 0x2f, 'Invalid lossless WebP signature');
        const packed = bytes.readUInt32LE(21);
        return {
            width: (packed & 0x3fff) + 1,
            height: ((packed >>> 14) & 0x3fff) + 1,
        };
    }
    throw new Error(`Unsupported WebP chunk ${chunk}`);
}

const listedFiles = new Set();
for (const asset of manifest.assets) {
    invariant(
        asset.file && !listedFiles.has(asset.file),
        `Duplicate asset ${asset.file}`
    );
    listedFiles.add(asset.file);
    invariant(asset.sourceNode, `${asset.file}: sourceNode is required`);
    invariant(
        !forbiddenAggregateNodes.has(asset.sourceNode),
        `${asset.file}: aggregate Figma export is forbidden`
    );
    invariant(
        asset.sourceName && asset.sourceType,
        `${asset.file}: source name/type is required`
    );
    invariant(asset.purpose, `${asset.file}: purpose is required`);
    invariant(
        asset.bounds?.width > 0 && asset.bounds?.height > 0,
        `${asset.file}: design bounds are required`
    );
    invariant(
        asset.original?.width > 0 && asset.original?.height > 0,
        `${asset.file}: export dimensions are required`
    );
    invariant(asset.exportFormat, `${asset.file}: export format is required`);
    invariant(
        Number.isInteger(asset.bytes) && asset.bytes > 0,
        `${asset.file}: byte size is required`
    );
    invariant(
        /^[a-f0-9]{64}$/.test(asset.sha256 || ''),
        `${asset.file}: SHA-256 is required`
    );
    for (const flag of [
        'containsText',
        'containsDynamicText',
        'containsControls',
        'containsDynamicMedia',
    ]) {
        invariant(
            typeof asset[flag] === 'boolean',
            `${asset.file}: ${flag} must be boolean`
        );
    }
    invariant(
        !asset.containsDynamicText,
        `${asset.file}: rendered dynamic text is forbidden`
    );
    invariant(
        !asset.containsControls,
        `${asset.file}: rendered controls are forbidden`
    );
    invariant(
        !asset.containsDynamicMedia,
        `${asset.file}: dynamic business media is forbidden`
    );
    invariant(!asset.containsText, `${asset.file}: embedded text is forbidden`);

    const assetPath = path.join(assetDirectory, asset.file);
    const [bytes, info] = await Promise.all([
        readFile(assetPath),
        stat(assetPath),
    ]);
    const digest = createHash('sha256').update(bytes).digest('hex');
    const dimensions = webPDimensions(bytes);
    invariant(info.size === asset.bytes, `${asset.file}: byte size mismatch`);
    invariant(digest === asset.sha256, `${asset.file}: SHA-256 mismatch`);
    invariant(
        dimensions.width === asset.original.width &&
            dimensions.height === asset.original.height,
        `${asset.file}: image dimensions do not match the manifest`
    );
}

const diskAssets = (await readdir(assetDirectory))
    .filter((file) => file !== 'manifest.json')
    .sort();
invariant(
    JSON.stringify(diskAssets) === JSON.stringify([...listedFiles].sort()),
    'Every Huwaa CP visual asset must have exactly one manifest entry'
);

const [html, css, js, theme, api, locales] = await Promise.all([
    readFile(path.join(cpDirectory, 'huwaa.html'), 'utf8'),
    readFile(path.join(pageDirectory, 'huwaa.css'), 'utf8'),
    readFile(path.join(pageDirectory, 'huwaa.js'), 'utf8'),
    readFile(path.join(root, 'common', 'theme.css'), 'utf8'),
    readFile(path.join(root, 'common', 'api.js'), 'utf8'),
    Promise.all(
        ['en', 'ar', 'tr', 'es'].map((locale) =>
            readFile(
                path.join(root, 'common', 'locales', `${locale}.json`),
                'utf8'
            )
        )
    ),
]);
const runtimeSource = [html, css, js].join('\n');

for (const nodeID of forbiddenAggregateNodes) {
    invariant(
        !runtimeSource.includes(nodeID),
        `Runtime must not reference aggregate Figma node ${nodeID}`
    );
}
for (const forbidden of [
    'whole-page',
    'page-screenshot',
    'figma-frame.png',
    'cp-plaza.png',
    'cp-week.png',
    'cp-reward.png',
]) {
    invariant(
        !runtimeSource.toLowerCase().includes(forbidden),
        `Forbidden aggregate screenshot reference: ${forbidden}`
    );
}

for (const asset of manifest.assets) {
    invariant(
        runtimeSource.includes(asset.file),
        `${asset.file}: traced asset is not consumed by the Huwaa CP page`
    );
}

invariant(theme.includes('--hy-theme-primary'), 'Common theme is invalid');
invariant(html.includes('../../common/theme.css'), 'Common theme is required');
invariant(html.includes('../../common/i18n.js'), 'Common i18n is required');
invariant(html.includes('../../common/api.js'), 'Common API is required');
invariant(
    html.includes('../../common/params.js'),
    'Common params are required'
);
invariant(
    html.includes('data-hy-app-code="huwaa"'),
    'Huwaa app identity is required'
);
invariant(
    html.indexOf("window.HyAppDefaultAppCode = 'huwaa'") <
        html.indexOf('../../common/api.js'),
    'Huwaa app code must be configured before common API initialization'
);
invariant(
    html.includes("window.HyAppI18nSupported = ['en', 'ar', 'tr', 'es']"),
    'Huwaa CP must restrict its language surface to en/ar/tr/es'
);
invariant(api.includes('cpWeeklyRankAPI'), 'CP weekly-rank API is required');
invariant(
    js.includes('HyAppAPI.cpWeeklyRank.status'),
    'Huwaa CP must consume the weekly-rank API'
);
invariant(
    !js.includes('HyAppAPI.cpSpace.intimacyLeaderboard') &&
        js.includes("activityData.plazaState = 'unavailable'"),
    'The cumulative intimacy leaderboard must not be presented as the Plaza gift-event feed'
);
invariant(
    js.includes("get('mock') === '1'") && js.includes('isLocalRuntime()'),
    'Visual fixtures must require explicit local mock mode'
);
invariant(
    js.includes('Promise.allSettled'),
    'Independent CP API failures must be isolated'
);
invariant(
    js.includes('requestGeneration'),
    'Stale asynchronous CP responses must be rejected'
);
invariant(
    js.includes('resolveExplicitEndAt') && !js.includes('localStorage'),
    'Countdown must not fabricate and persist a production activity period'
);
invariant(
    js.includes('serverTimeOffsetMS') && js.includes('server_time_ms'),
    'Countdown must use the backend server clock'
);
invariant(
    js.includes('source.enabled !== false'),
    'The weekly-rank enabled switch must control the page state'
);
invariant(
    js.includes('source.rank_no') && js.includes('section.rankNo === rankNo'),
    'Reward tiers must stay aligned to backend rank_no'
);
invariant(
    html.includes('hero-art-text-free.webp') &&
        html.includes('class="huwaa-cp-wordmark"') &&
        html.includes('data-i18n="cp.pageTitle"'),
    'The visible event title must be localized DOM text over text-free art'
);
invariant(
    html.includes("var aliases = ['app', 'app_code', 'appCode']"),
    'All app-code aliases must resolve to Huwaa before common scripts load'
);
invariant(
    css.includes('background: #e98c9b') &&
        css.includes('left: -487px') &&
        css.includes('mix-blend-mode: screen') &&
        css.includes('opacity: 0.5'),
    'The Figma frame fill and petal texture blend must be reconstructed exactly'
);
invariant(
    css.includes('#000 88.93%') && css.includes('transparent 100%'),
    'The hero must preserve the Figma bottom fade mask'
);
invariant(
    js.includes('stageWrap.style.minHeight = stageWrap.style.height'),
    'Responsive stage height must override the initial minimum height'
);
invariant(
    js.includes("activeTab === 'rewards' && !activityData.rewards.length"),
    'Empty and failed Rewards states must not retain the full three-panel stage height'
);
invariant(
    !runtimeSource.includes('lalu-coin'),
    'Huwaa CP must not display a Lalu coin asset'
);
invariant(
    !runtimeSource.includes('Namename') &&
        !runtimeSource.includes('1234567') &&
        !runtimeSource.includes('DDDDD'),
    'Figma placeholder business data must not be baked into runtime code'
);
invariant(
    html.includes('role="tablist"') && html.includes('role="tabpanel"'),
    'CP tabs must expose accessible tab semantics'
);
invariant(
    html.includes('aria-live="polite"'),
    'Dynamic CP state must be announced'
);
invariant(
    css.includes('prefers-reduced-motion'),
    'Loading motion must respect reduced motion'
);

for (const locale of locales) {
    for (const key of [
        '"cp.countdownLabel"',
        '"cp.huwaaPlazaGiftTitle"',
        '"cp.previousWeekTopTitle"',
        '"cp.previousWeekTopSubtitle"',
        '"cp.rankPodiumLabel"',
        '"cp.rankPlace"',
        '"cp.loading"',
        '"cp.empty"',
        '"cp.error"',
        '"cp.disabled"',
        '"cp.unavailable"',
        '"cp.retry"',
        '"cp.reward"',
        '"cp.rewardCoins"',
        '"cp.rewardTierGold"',
        '"cp.rewardTierSilver"',
        '"cp.rewardTierBronze"',
        '"cp.daysLong"',
    ]) {
        invariant(
            locale.includes(key),
            `Required Huwaa CP translation is missing: ${key}`
        );
    }
}

console.log(
    `activity/cp/huwaa.html asset audit passed (${manifest.assets.length} traced layers)`
);