import { describe, it, expect } from 'vitest';
import {
    calculatePricing,
    type LogisticsRule,
    type CommissionRule,
} from '../src/pricing/pricing-engine.js';
import { pricingPreviewRequestSchema, pricingInputKey } from '@atlas/contracts';
const id = 'ad877f74-36d0-4ef9-a711-cd904b37912f';
const input = () =>
    pricingPreviewRequestSchema.parse({
        store_id: id,
        platform_product_category_id: id,
        fulfillment: 'rfbs',
        purchase_cost_cny: '28',
        package: {
            shipping_weight_g: '380',
            length_mm: '220',
            width_mm: '160',
            height_mm: '90',
            status: 'confirmed',
        },
        pricing: {
            rate_card_id: id,
            transport_method_ids: [id],
            default_transport_method_id: id,
            domestic_shipping_and_label_fee_cny: '3',
            ad_rate: '0.03',
            last_mile_rate: '0.02',
            withdrawal_rate: '0.01',
            other_rate: '0.02',
            desired_markup_rate: '0.5',
            list_price_discount_rate: '0.2',
        },
    });
const rule: LogisticsRule = {
    id,
    product_type_id: id,
    transport_method_id: id,
    transport_name: '标准',
    product_type_name: 'ExtraSmall',
    fixed_fee_cny: '3.12',
    per_billable_kg_fee_cny: '36.4',
    min_charge_cny: null,
    surcharge_rules: [],
    merchandise_currency_code: 'CNY',
    min_merchandise_value: null,
    max_merchandise_value: '135',
    min_value_inclusive: true,
    max_value_inclusive: true,
    min_actual_weight_kg: '0.001',
    min_actual_weight_inclusive: true,
    max_actual_weight_kg: '0.5',
    max_sum_dimensions_cm: '90',
    max_longest_side_cm: '60',
    max_second_longest_side_cm: null,
    billing_basis: 'actual_only',
    volume_divisor: null,
    volume_condition_sum_gt_cm: null,
    volume_round_scale: null,
    billing_round_scale: null,
    max_volume_weight_kg: null,
    volume_limit_round_scale: null,
};
const commission: CommissionRule = {
    id,
    currency_code: 'RUB',
    min_price: null,
    max_price: null,
    min_inclusive: true,
    max_inclusive: true,
    commission_rate: '0.12',
    version: 'test',
};
describe('十进制定价引擎', () => {
    it('目标加价与明细一致，CNY / RUB 都按最终币种舍入', () => {
        const c = calculatePricing(input(), 'CNY', '12.3', [rule], [commission])
            .options[0];
        expect(c.selling_price).toBe('77.44');
        expect(c.profit_cny).toBe('14.00');
        expect(c.list_price).toBe('96.80');
        expect(c.fees.logistics_cny).toBe('16.9520');
        const rub = calculatePricing(
            input(),
            'RUB',
            '12.3',
            [rule],
            [commission],
        ).options[0];
        expect(rub.selling_price).toBe('952.52');
        expect(rub.can_confirm).toBe(true);
    });
    it('固定售价保持原价并识别亏损', () => {
        const i = input();
        i.pricing.mode = 'fixed_sale';
        i.pricing.selling_price = '10';
        const o = calculatePricing(i, 'CNY', '12.3', [rule], [commission])
            .options[0];
        expect(o.selling_price).toBe('10.00');
        expect(o.can_confirm).toBe(false);
        expect(Number(o.profit_cny)).toBeLessThan(0);
    });
    it('零佣金仍生成正式报价，平台佣金费用为零', () => {
        const o = calculatePricing(
            input(),
            'RUB',
            '12.3',
            [rule],
            [{ ...commission, commission_rate: '0.000000' }],
        ).options[0];
        expect(o.commission_rate).toBe('0.000000');
        expect(o.fees.commission_cny).toBe('0.0000');
    });
    it('实际重、尺寸和开区间边界精确生效', () => {
        const i = input();
        i.package.shipping_weight_g = '500';
        expect(
            calculatePricing(i, 'CNY', '12.3', [rule], [commission]).options,
        ).toHaveLength(1);
        i.package.shipping_weight_g = '500.001';
        expect(
            calculatePricing(i, 'CNY', '12.3', [rule], [commission]).options,
        ).toHaveLength(0);
        i.package.shipping_weight_g = '380';
        expect(
            calculatePricing(
                i,
                'CNY',
                '12.3',
                [
                    {
                        ...rule,
                        min_actual_weight_kg: '0.380',
                        min_actual_weight_inclusive: false,
                    },
                ],
                [commission],
            ).options,
        ).toHaveLength(0);
    });
    it('先舍入售价再检查货值及佣金档，不跨档蒙混', () => {
        const i = input();
        expect(
            calculatePricing(
                i,
                'CNY',
                '12.3',
                [{ ...rule, max_merchandise_value: '77.439' }],
                [commission],
            ).options,
        ).toHaveLength(0);
        expect(
            calculatePricing(
                i,
                'CNY',
                '12.3',
                [rule],
                [{ ...commission, max_price: '952.51' }],
            ).options,
        ).toHaveLength(0);
    });
    it('总费率达到 100% 拒绝，未知附加费不能漏算', () => {
        const i = input();
        i.pricing.ad_rate = '0.9';
        expect(
            calculatePricing(i, 'CNY', '12.3', [rule], [commission]).options,
        ).toHaveLength(0);
        expect(
            calculatePricing(
                input(),
                'CNY',
                '12.3',
                [{ ...rule, surcharge_rules: [{ unknown: true }] }],
                [commission],
            ).options,
        ).toHaveLength(0);
    });
    it('体积重按指定位数进位并检查进位后的上限', () => {
        const i = input();
        i.package = {
            shipping_weight_g: '5000',
            length_mm: '500',
            width_mm: '400',
            height_mm: '301',
            status: 'confirmed',
        };
        const volume = {
            ...rule,
            max_actual_weight_kg: '30',
            max_sum_dimensions_cm: '310',
            billing_basis: 'max_actual_volume',
            volume_divisor: '12000',
            volume_round_scale: 3,
            max_volume_weight_kg: '6',
            volume_limit_round_scale: 0,
        };
        expect(
            calculatePricing(
                i,
                'CNY',
                '12.3',
                [{ ...volume, max_merchandise_value: null }],
                [commission],
            ).options[0].billable_weight_kg,
        ).toBe('5.017');
        expect(
            calculatePricing(
                i,
                'CNY',
                '12.3',
                [{ ...volume, max_volume_weight_kg: '5' }],
                [commission],
            ).options,
        ).toHaveLength(0);
    });
    it('默认运输失效时不偷偷选择其他方式', () => {
        const i = input();
        i.pricing.default_transport_method_id =
            '8d6df67c-1fa3-45b9-9766-d4f5c813b903';
        expect(
            calculatePricing(i, 'CNY', '12.3', [rule], [commission])
                .recommended_option_id,
        ).toBeNull();
    });
    it('格式化金额与 JSONB 字段重排不会使同一输入失效', () => {
        const original = input();
        const reordered = JSON.parse(
            JSON.stringify(original, (_key, value) =>
                value && typeof value === 'object' && !Array.isArray(value)
                    ? Object.fromEntries(Object.entries(value).reverse())
                    : value,
            ),
        );
        reordered.purchase_cost_cny = '28.00';
        reordered.package.shipping_weight_g = '380.000';
        reordered.pricing.ad_rate = '0.030000';
        expect(pricingInputKey(original)).toBe(pricingInputKey(reordered));
        reordered.package.length_mm = '221';
        expect(pricingInputKey(original)).not.toBe(pricingInputKey(reordered));
    });
    it('显示利润舍入为零时，真实微亏仍禁止确认', () => {
        const i = input();
        i.pricing.mode = 'fixed_sale';
        i.pricing.selling_price = '59.94';
        const option = calculatePricing(
            i,
            'CNY',
            '12.3',
            [{ ...rule, fixed_fee_cny: '3.121' }],
            [commission],
        ).options[0];
        expect(option.profit_cny).toBe('-0.00');
        expect(option.can_confirm).toBe(false);
    });
});

describe('导入佣金的卢布分档边界', () => {
    const bands: CommissionRule[] = [
        {
            ...commission,
            min_price: '0',
            max_price: '1500',
            min_inclusive: false,
            commission_rate: '0.12',
        },
        {
            ...commission,
            min_price: '1500',
            max_price: '5000',
            min_inclusive: false,
            commission_rate: '0.14',
        },
        {
            ...commission,
            min_price: '5000',
            max_price: null,
            min_inclusive: false,
            commission_rate: '0.205',
        },
    ];
    it.each([
        ['1500', '0.12'],
        ['1500.01', '0.14'],
        ['5000', '0.14'],
        ['5000.01', '0.205'],
    ])('售价 %s 只命中对应佣金档', (price, rate) => {
        const i = input();
        i.pricing.mode = 'fixed_sale';
        i.pricing.selling_price = price;
        const result = calculatePricing(
            i,
            'RUB',
            '12.3',
            [{ ...rule, max_merchandise_value: null }],
            bands,
        );
        expect(result.options).toHaveLength(1);
        expect(Number(result.options[0].commission_rate)).toBe(Number(rate));
    });
    it('人民币售价换算卢布后匹配费率', () => {
        const i = input();
        i.pricing.mode = 'fixed_sale';
        i.pricing.selling_price = '150';
        const result = calculatePricing(
            i,
            'CNY',
            '10',
            [{ ...rule, max_merchandise_value: null }],
            bands,
        );
        expect(result.options).toHaveLength(1);
        expect(Number(result.options[0].commission_rate)).toBe(0.12);
        i.pricing.selling_price = '150.01';
        expect(
            Number(
                calculatePricing(
                    i,
                    'CNY',
                    '10',
                    [{ ...rule, max_merchandise_value: null }],
                    bands,
                ).options[0].commission_rate,
            ),
        ).toBe(0.14);
    });
});