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 pageDirectory = path.join(root, 'coin-seller');
const assetDirectory = path.join(pageDirectory, 'assets', 'fami', 'layers');
const manifestPath = path.join(assetDirectory, 'manifest.json');
const forbiddenAggregateNodes = new Set([
    '827:3011',
    '827:3012',
    '827:3027',
    '827:3042',
    '827:3057',
    '827:3072',
    '827:3087',
    '827:3014',
    '827:3022',
]);

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?.rootFrame?.id === '827:3011',
    'Unexpected Figma root frame'
);
invariant(
    manifest.figma?.designSize?.width === 1080 &&
        manifest.figma?.designSize?.height === 2626 &&
        manifest.figma?.designSize?.cssWidth === 360,
    'Unexpected design dimensions'
);
invariant(
    manifest.runtimeRules?.referenceScreenshotRuntimeUse === false,
    'The whole-page reference screenshot must remain QA-only'
);
invariant(
    manifest.runtimeRules?.referenceScreenshot ===
        'coin-seller/.audit/figma-827-3011.png',
    'The QA screenshot path must remain repo-relative and outside runtime assets'
);
invariant(
    manifest.runtimeRules?.heroMask?.sourceNode === '827:3089' &&
        JSON.stringify(manifest.runtimeRules.heroMask.sourceStops) ===
            JSON.stringify([65, 100]) &&
        JSON.stringify(manifest.runtimeRules.heroMask.renderedStops) ===
            JSON.stringify([83.8, 94.7]),
    'The transformed Figma hero mask trace is required'
);
invariant(Array.isArray(manifest.assets), 'Manifest assets must be an array');
invariant(
    manifest.assets.length === 4,
    'Exactly four traced layers are allowed'
);

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),
        `${asset.file}: aggregate Figma export is forbidden`
    );
    invariant(
        asset.sourceName && asset.sourceType && asset.purpose,
        `${asset.file}: source trace and purpose are 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}: original 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`
    );
    invariant(
        asset.containsDynamicText === false,
        `${asset.file}: dynamic text is forbidden in assets`
    );
    invariant(
        asset.containsControls === false,
        `${asset.file}: rendered controls are forbidden in assets`
    );
    invariant(
        asset.containsBusinessMedia === false,
        `${asset.file}: business media is forbidden in assets`
    );
    invariant(
        asset.containsDecorativeWordmark === false ||
            asset.sourceNode === '827:3090',
        `${asset.file}: only the single Figma hero image may contain its decorative wordmark`
    );

    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');
    invariant(info.size === asset.bytes, `${asset.file}: byte size mismatch`);
    invariant(digest === asset.sha256, `${asset.file}: SHA-256 mismatch`);
}

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

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

for (const nodeID of forbiddenAggregateNodes) {
    invariant(
        !runtimeSource.includes(nodeID),
        `Runtime must not reference aggregate Figma node ${nodeID}`
    );
}
for (const forbidden of [
    'figma-827-3011.png',
    '.audit/figma',
    'whole-page',
    'page-screenshot',
    'root-frame.png',
]) {
    invariant(
        !runtimeLower.includes(forbidden),
        `Forbidden whole-page reference: ${forbidden}`
    );
}

for (const asset of manifest.assets) {
    invariant(
        runtimeSource.includes(asset.file),
        `${asset.file}: traced asset is not consumed by the 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('data-hy-app-code="fami"'),
    'Fami app identity is required'
);
invariant(
    html.indexOf("window.HyAppDefaultAppCode = 'fami'") <
        html.indexOf('../common/api.js'),
    'Fami app code must be configured before common API initialization'
);
invariant(
    html.includes('<template id="sellerCardTemplate">'),
    'Seller cards must be produced from a DOM template'
);
invariant(
    !runtimeLower.includes('home-indicator') &&
        !runtimeLower.includes('status-bar') &&
        !runtimeLower.includes('bottom-bar'),
    'The Figma frame has no fake system bars or bottom bar'
);

const walletStart = api.indexOf('var walletAPI =');
const walletEnd = api.indexOf('var pointWalletAPI =', walletStart);
const walletSource = api.slice(walletStart, walletEnd);
invariant(
    walletSource.includes('listCoinSellers: function ()'),
    'wallet.listCoinSellers() is required'
);
invariant(
    walletSource.includes("request('/api/v1/wallet/coin-sellers'") &&
        !walletSource.includes(
            "'/api/v1/wallet/coin-sellers', {\n                method: 'GET',\n                query:"
        ),
    'Coin seller list must use the exact region-scoped GET endpoint without query data'
);
invariant(
    js.includes('window.HyAppAPI.wallet.listCoinSellers()'),
    'The page must consume the common Coin Seller API wrapper'
);
invariant(
    js.includes("params.get('mock') === '1'"),
    'Visual fixtures must require explicit mock=1'
);
invariant(
    js.includes('if (sequence !== requestSequence) return;'),
    'Async retries must reject stale responses'
);
invariant(
    js.includes('source.country_code') &&
        js.includes('source.whatsapp_url') &&
        js.includes('source.display_user_id'),
    'Dynamic API field mapping is incomplete'
);
invariant(
    js.includes("if (code === 'AE')") && js.includes('flagcdn.com/w80/'),
    'AE fallback must not be reused for other country codes'
);
invariant(
    css.includes('aspect-ratio: 1008 / 183') &&
        css.includes('margin-top: -7.5cqw') &&
        css.includes('top: 33.8798%') &&
        css.includes('#773924') &&
        css.includes('#000 83.8%') &&
        css.includes('transparent 94.7%'),
    'Measured Figma geometry or styling is missing'
);
invariant(
    css.includes('prefers-reduced-motion'),
    'Loading motion must respect reduced motion'
);

for (const locale of locales) {
    invariant(
        locale.includes('"coin_seller_fami.page_title"') &&
            locale.includes('"coin_seller_fami.contact_unavailable"'),
        'Required Coin Seller translations are missing'
    );
}

console.log(
    `coin-seller/fami.html asset audit passed (${manifest.assets.length} traced layers)`
);