import assert from 'node:assert/strict';
import { readFile } from 'node:fs/promises';
import test from 'node:test';
import { collectCurrentProduct } from '../lib/source-parsers.ts';

function fixtureSkuModel(html: string) {
    const marker = '"skuModel": ';
    const start = html.indexOf(marker);
    assert.ok(start >= 0);
    const source = html.slice(start + marker.length);
    let depth = 0;
    let quoted = false;
    let escaped = false;
    for (let index = 0; index < source.length; index += 1) {
        const char = source[index];
        if (quoted) {
            if (escaped) escaped = false;
            else if (char === '\\') escaped = true;
            else if (char === '"') quoted = false;
        } else if (char === '"') quoted = true;
        else if (char === '{') depth += 1;
        else if (char === '}' && --depth === 0) return JSON.parse(source.slice(0, index + 1));
    }
    throw new Error('1688 样本缺少完整 skuModel');
}

test('1688 真实样本按 skuInfoMap 的 price 和规格图片生成逐 SKU 数据', async () => {
    const html = await readFile(new URL('../../../packages/reference/1688.html', import.meta.url), 'utf8');
    const skuModel = fixtureSkuModel(html);
    const root = {
        scripts: [],
        querySelector: () => null,
        querySelectorAll: () => [],
    } as unknown as Document;
    const payload = await collectCurrentProduct(
        root,
        'https://detail.1688.com/offer/123456789.html',
        undefined,
        async () => ({ skuModel }),
    );
    assert.equal(payload.variants.length, Object.keys(skuModel.skuInfoMap).length);
    for (const [name, row] of Object.entries<any>(skuModel.skuInfoMap)) {
        const variant = payload.variants.find((item) => item.sourceSku === String(row.skuId));
        assert.ok(variant, `缺少 ${name}`);
        assert.equal(variant.displayName, name);
        assert.equal(variant.sourcePrice?.amount, row.price);
        const image = skuModel.skuProps[0].value.find((item: any) => item.name === name)?.imageUrl;
        assert.ok(payload.assets.some((asset) =>
            asset.variantSourceKey === variant.sourceVariantKey && asset.url === image
        ), `${name} 未关联规格图片`);
    }
    const scriptRoot = {
        ...root,
        scripts: [{ type: 'text/javascript', textContent: html }],
    } as unknown as Document;
    const withoutBridge = await collectCurrentProduct(
        scriptRoot,
        'https://detail.1688.com/offer/123456789.html',
    );
    assert.equal(withoutBridge.variants.length, payload.variants.length);
    assert.equal(withoutBridge.assets.filter((asset) => asset.variantSourceKey).length, payload.variants.length);
});