import assert from 'node:assert/strict';
import { test } from 'node:test';
import { deepSeekJson, makeModel, validateCopy, validatePackage } from '../src/product-ai.ts';

test('同一商品模型只由类目和稳定商品 ID 确定', () => {
    const category = { name: '手办', path: '玩具 / 手办' };
    const first = makeModel(category, 'abcdef12-0000-4000-8000-000000000000');
    const second = makeModel(category, 'abcdef12-0000-4000-8000-000000000000');
    assert.equal(first, second);
    assert.match(first, /^FIG-MIX-[A-F0-9]{5}$/);
    assert.ok(first.length <= 32);
    assert.equal((first.match(/-/g) ?? []).length, 2);
});

test('文案只保留成对且含俄文字符的字段', () => {
    assert.deepEqual(
        validateCopy({
            title: { ru: 'Фигурка героя', zh: '角色手办' },
            tags: [
                { ru: 'Коллекционная', zh: '收藏' },
                { ru: 'invalid', zh: '无效' },
            ],
            description: { ru: 'Сделано из золота', zh: '' },
        }),
        {
            title: { ru: 'Фигурка героя', zh: '角色手办' },
            tags: [{ ru: 'Коллекционная', zh: '收藏' }],
        },
    );
});

test('俄文标题、标签和描述中的汉字不会进入回填结果', () => {
    assert.deepEqual(
        validateCopy({
            title: { ru: 'Бейсболка ANTA/安踏', zh: '安踏棒球帽' },
            tags: [
                { ru: 'Спортивная кепка', zh: '运动帽' },
                { ru: 'Цвет 运动红-1', zh: '运动红-1' },
            ],
            description: {
                ru: 'Бейсболка унисекс. Размер: 均码.',
                zh: '中性棒球帽。尺码：均码。',
            },
        }),
        { tags: [{ ru: 'Спортивная кепка', zh: '运动帽' }] },
    );
});

test('单行多句产品描述会保留为易读的段落', () => {
    const copy = validateCopy({
        description: {
            ru: 'Коллекционная фигурка из ПВХ. Размер упаковки: 180 × 120 × 250 мм.',
            zh: 'PVC 收藏手办。包装尺寸为 180 × 120 × 250 mm。',
        },
    });
    assert.equal(
        copy.description?.ru,
        'Коллекционная фигурка из ПВХ.\n\nРазмер упаковки: 180 × 120 × 250 мм.',
    );
    assert.equal(
        copy.description?.zh,
        'PVC 收藏手办。\n\n包装尺寸为 180 × 120 × 250 mm。',
    );
});

test('中文对照中的通用段落标题会规范为中文', () => {
    const copy = validateCopy({
        description: {
            ru: 'Фигурка.\n\nХарактеристики:\n• Материал: ПВХ',
            zh: '收藏手办。\n\nХарактеристики:\n• 材质：PVC',
        },
    });
    assert.match(copy.description?.zh ?? '', /\n\n产品信息：\n• 材质：PVC$/);
});

test('包装建议必须有采集证据，且尺寸重量为有效正数', () => {
    const source = {
        description: '包装尺寸 10 × 20 × 30 mm，包装重量 400 g',
        attributes: [],
    };
    const proposal = {
        length_mm: '10',
        width_mm: '20',
        height_mm: '30',
        shipping_weight_g: '400',
        evidence: '包装尺寸 10 × 20 × 30 mm，包装重量 400 g',
    };
    assert.equal(validatePackage(proposal, source)?.shipping_weight_g, '400');
    assert.equal(
        validatePackage({ ...proposal, evidence: '模型凭空猜测' }, source),
        null,
    );
    assert.equal(
        validatePackage({ ...proposal, shipping_weight_g: '0' }, source),
        null,
    );
});

test('包装字段名称可作为 1688 分离尺寸和重量证据', () => {
    const source = {
        description: null,
        attributes: [
            { key: 'size', name: '包装尺寸', value: '10 × 20 × 30 mm' },
            { key: 'weight', name: '包装重量', value: '400 g' },
        ],
    };
    const proposal = {
        length_mm: '10',
        width_mm: '20',
        height_mm: '30',
        shipping_weight_g: '400',
        evidence: '10 × 20 × 30 mm\n400 g',
    };
    assert.equal(validatePackage(proposal, source)?.height_mm, '30');
});

test('DeepSeek 结构化请求关闭思考，截断后提高输出上限重试', async () => {
    const originalFetch = globalThis.fetch;
    const originalKey = process.env.DEEPSEEK_API_KEY;
    const requests = [];
    process.env.DEEPSEEK_API_KEY = 'test-key';
    globalThis.fetch = async (_url, options) => {
        requests.push(JSON.parse(options.body));
        const truncated = requests.length === 1;
        return new Response(
            JSON.stringify({
                choices: [
                    {
                        finish_reason: truncated ? 'length' : 'stop',
                        message: { content: truncated ? '' : '{"ok":true}' },
                    },
                ],
                usage: { total_tokens: 25 },
            }),
            { status: 200 },
        );
    };
    try {
        assert.deepEqual(await deepSeekJson('输出 JSON', '商品事实'), {
            data: { ok: true },
            tokens: 25,
        });
        assert.equal(requests.length, 2);
        assert.deepEqual(requests[0].thinking, { type: 'disabled' });
        assert.equal(requests[0].max_tokens, 8192);
        assert.equal(requests[1].max_tokens, 16384);
        assert.match(requests[1].messages[1].content, /不要只返回空白/);
    } finally {
        globalThis.fetch = originalFetch;
        if (originalKey === undefined) delete process.env.DEEPSEEK_API_KEY;
        else process.env.DEEPSEEK_API_KEY = originalKey;
    }
});

test('DeepSeek JSON 模式返回空白内容时调整提示词重试', async () => {
    const originalFetch = globalThis.fetch;
    const originalKey = process.env.DEEPSEEK_API_KEY;
    const requests = [];
    process.env.DEEPSEEK_API_KEY = 'test-key';
    globalThis.fetch = async (_url, options) => {
        requests.push(JSON.parse(options.body));
        return new Response(
            JSON.stringify({
                choices: [{
                    finish_reason: 'stop',
                    message: { content: requests.length === 1 ? '   ' : '{"ok":true}' },
                }],
            }),
            { status: 200 },
        );
    };
    try {
        assert.deepEqual((await deepSeekJson('输出 JSON', '商品事实')).data, { ok: true });
        assert.equal(requests.length, 2);
        assert.equal(requests[1].max_tokens, 8192);
        assert.match(requests[1].messages[1].content, /不要只返回空白/);
    } finally {
        globalThis.fetch = originalFetch;
        if (originalKey === undefined) delete process.env.DEEPSEEK_API_KEY;
        else process.env.DEEPSEEK_API_KEY = originalKey;
    }
});