import test from 'node:test';
import assert from 'node:assert/strict';
import fs from 'node:fs';
import {
    temporaryBenefits,
    temporaryBenefitNotice,
    temporaryBenefitVersion,
} from '../../resources/js/lib/iva-temporary-benefits.ts';
import {
    continueTemporaryOperation,
    evaluateSalesOperation,
    newSalesOperation,
    operationTreatments,
    recordSales,
    salesBook,
    salesCurrent,
    saveSalesBook,
} from '../../resources/js/lib/iva-operations.ts';
import { createProjectDossierReport } from '../../resources/js/lib/project-dossier-report.ts';

const frozen = JSON.parse(
    fs.readFileSync(
        new URL('./fixtures/iva-annex-i-inputs.json', import.meta.url),
        'utf8',
    ),
);
function operation(benefit, index = 0) {
    return {
        ...newSalesOperation(`g3-${index}`, '2026-10', 'MZN'),
        treatment: benefit.id,
        description: `SYNTHETIC QA — ${benefit.branch} / ${benefit.label}`,
        establishment: 'SYNTHETIC QA estabelecimento',
        amount: index === 0 ? '116' : '100',
        basis: index === 0 ? 'included' : 'net',
        evidence:
            'SYNTHETIC QA — natureza e contraprestação pressupostas para demonstração; não certificação',
    };
}
export function fixture() {
    const draft = {
        ...structuredClone(frozen),
        project_title: 'SYNTHETIC QA — G3 / Cessação de benefícios temporários',
        context_opportunity: 'opportunity:322',
    };
    const pending = recordSales(draft, {
        currency: 'MZN',
        rows: temporaryBenefits.map(operation),
        periods: [{ period: '2026-10', complete: true }],
    });
    const rows = pending.rows.map((row) => {
        const next = continueTemporaryOperation(row, 'general');
        next.confirmed = operationTreatments
            .find((rule) => rule.id === next.treatment)
            .conditions.map((_, i) => i);
        return next;
    });
    const agricultural = continueTemporaryOperation(
        { ...operation(temporaryBenefits[5], 8), id: 'g3-cane-independent' },
        'production_agriculture',
    );
    agricultural.confirmed = operationTreatments
        .find((rule) => rule.id === agricultural.treatment)
        .conditions.map((_, i) => i);
    rows.push(agricultural);
    const book = recordSales(draft, { ...pending, rows });
    draft.modelo_a_snapshot = saveSalesBook(draft, book);
    return { draft, book, pending };
}

void test('G3 has seven stable branches; expired benefits never become zero-rated or taxable automatically in2026', () => {
    assert.deepEqual(
        temporaryBenefits.map((item) => item.branch),
        ['P038', 'P039', 'P040', 'P041', 'P042', 'P043', 'P045'],
    );
    for (const benefit of temporaryBenefits) {
        const row = operation(benefit),
            result = evaluateSalesOperation(row, 'MZN');
        assert.equal(result.status, 'indeterminate');
        for (const field of ['field', 'rate', 'net', 'vat', 'gross'])
            assert.equal(result[field], null, field);
        assert.match(result.reason, /terminou em31\/12\/2025/);
        assert.match(result.source, /Lei10\/2025/);
        for (const period of ['2026-01', '2026-12'])
            assert.match(
                temporaryBenefitNotice(benefit.id, period),
                /não é aplicável/,
            );
        for (const period of ['2025-12', '2027-01', ''])
            assert.match(
                evaluateSalesOperation({ ...row, period }, 'MZN').reason,
                /fora da cobertura/,
            );
        assert.match(
            evaluateSalesOperation({ ...row, amount: '', evidence: '' }, 'MZN')
                .reason,
            /ficam por determinar/,
        );
    }
    assert.match(
        temporaryBenefits[1].historicalScope,
        /efectuadas pela indústria/,
    );
    assert.match(temporaryBenefits[1].historicalScope, /9\(14\)/);
    assert.match(temporaryBenefits[5].historicalScope, /9\(14\)/);
    assert.throws(() => temporaryBenefitNotice('unknown', '2026-10'));
});

void test('explicit continuation keeps amounts/origin/identity and requires new conditions; cane has an independent agricultural route', () => {
    for (const [i, benefit] of temporaryBenefits.entries()) {
        const row = operation(benefit, i),
            next = continueTemporaryOperation(row, 'general');
        for (const field of [
            'id',
            'period',
            'description',
            'establishment',
            'amount',
            'basis',
            'evidence',
            'sourceAmount',
            'sourcePeriod',
            'sourceCurrency',
        ])
            assert.deepEqual(next[field], row[field], field);
        assert.equal(next.temporaryBenefitOrigin, benefit.id);
        assert.deepEqual(next.confirmed, []);
        assert.ok(next.source.startsWith(row.source));
        assert.ok(next.source.includes(benefit.branch));
        assert.ok(next.source.includes(temporaryBenefitVersion));
        assert.equal(evaluateSalesOperation(next, 'MZN').vat, null);
        const confirmed = { ...next, confirmed: [0, 1] };
        assert.equal(evaluateSalesOperation(confirmed, 'MZN').vat, '16.00');
        assert.equal(
            evaluateSalesOperation({ ...confirmed, amount: '' }, 'MZN').vat,
            null,
        );
        assert.equal(
            evaluateSalesOperation({ ...confirmed, evidence: '' }, 'MZN').vat,
            null,
        );
        assert.equal(
            evaluateSalesOperation(
                { ...confirmed, sourceCurrency: 'USD' },
                'MZN',
            ).vat,
            null,
        );
        assert.throws(() => continueTemporaryOperation(row, 'missing'));
        assert.throws(() => continueTemporaryOperation(row, benefit.id));
    }
    const { book } = fixture();
    assert.equal(book.result.rows.at(-1).field, '05');
    assert.equal(book.result.rows.at(-1).vat, '0.00');
    assert.equal(book.result.rows[0].net, '100.00');
    assert.equal(book.result.rows[0].vat, '16.00');
    assert.equal(book.rows[0].amount, '116');
    assert.equal(book.rows[0].basis, 'included');
});

void test('actual cessation→choice→calculation→stored snapshot→report preserves all13 delivered books and history', () => {
    const { draft, book, pending } = fixture();
    for (const value of Object.values(pending.result.periods[0].fields))
        assert.equal(value, null);
    assert.deepEqual(book.history.at(-1), pending.result);
    assert.equal(book.result.periods[0].fields['01'], '700.00');
    assert.equal(book.result.periods[0].fields['02'], '112.00');
    assert.equal(book.result.periods[0].fields['05'], '100.00');
    assert.equal(salesCurrent(draft, book), true);
    assert.deepEqual(salesBook(JSON.parse(JSON.stringify(draft))), book);
    const before = JSON.parse(frozen.modelo_a_snapshot).salesOperations,
        after = JSON.parse(draft.modelo_a_snapshot).salesOperations;
    assert.equal(Object.keys(before).length, 13);
    for (const [context, original] of Object.entries(before)) {
        assert.deepEqual(after[context], original, context);
        assert.equal(
            salesCurrent(
                { ...draft, context_opportunity: context },
                after[context],
            ),
            true,
            context,
        );
    }
    const model = createProjectDossierReport(draft, {
        selectedSections: new Set(['finance']),
        version: 'QA G3 — Cessação2026',
    });
    const encoded = JSON.stringify(model);
    for (const token of [
        'opportunity:322',
        'Manica',
        '2026-10',
        '700.00',
        '112.00',
        '100.00',
        '31/12/2025',
        temporaryBenefitVersion,
        'P045',
        'Lei3/2025',
        'Lei22/2022',
    ])
        assert.ok(encoded.includes(token), token);
    if (process.env.IVA_G3_CALCULATED)
        fs.writeFileSync(process.env.IVA_G3_CALCULATED, JSON.stringify(draft));
});