import assert from 'node:assert/strict';
import test from 'node:test';
import { fiscalQaRows } from '../../resources/js/lib/fiscal-qa-preview.ts';
import {
    exportCompletedArithmeticCsv,
    readArithmeticSnapshot,
} from '../../resources/js/lib/simulation-form.ts';
import { createProjectDossierReport } from '../../resources/js/lib/project-dossier-report.ts';

function fixture() {
    const snapshot = {
        contract_version: 1,
        scenario_kind: 'fiscal_rule_qa_preview',
        base: '0.03',
        currency: 'MZN',
        indicative_total: '0.0048',
        legal_interpretation: false,
        formula_version: 'investmoz.tax.v1',
        context: {
            reference_date: '2026-10-21',
            currency: 'MZN',
            currency_fraction_digits: 2,
            scenario_id: '61000100-0000-4000-8000-000000000099',
            scenario_version: 1,
            engine_version: 'fiscal-draft-preview-v1',
            ruleset_version: 'IVA-GERAL-BASE-LIQUIDA:1',
        },
        result: {
            status: 'calculated',
            value: '0.0048',
            unit: 'MZN',
            explanation:
                'Cálculo exacto QA; enquadramento declarado; não é saldo a pagar.',
            missing_inputs: [],
            source_ids: ['source-fixture'],
        },
        intermediate: { result: '48/10000' },
        fiscal_provenance: {
            rule: {
                rule_code: 'IVA-GERAL-BASE-LIQUIDA',
                rule_version: 1,
                valid_from: '2023-01-01',
                valid_until: null,
                source_sha256: 'a'.repeat(64),
                source: { diploma: 'Lei 22/2022', article: 'Artigo 17(1)' },
            },
        },
    };
    return {
        id: '61000100-0000-4000-8000-000000000088',
        status: 'completed',
        version_no: 2,
        result_snapshot: snapshot,
        reports: [
            {
                id: '61000100-0000-4000-8000-000000000077',
                version_no: 1,
                status: 'ready',
                report_snapshot: structuredClone(snapshot),
                report_sha256: 'b'.repeat(64),
            },
        ],
    };
}

void test('screen rows preserve sub-cent IVA as a string and distinguish calculation from payment', () => {
    const simulation = fixture();
    const before = JSON.stringify(simulation);
    const rows = fiscalQaRows(simulation.result_snapshot);
    assert.equal(
        rows.find(([label]) => label.startsWith('IVA calculado'))[1],
        '0.0048',
    );
    assert.match(
        rows.find(([label]) => label === 'Arredondamento')[1],
        /Não aplicado/,
    );
    assert.match(
        rows.find(([label]) => label === 'Enquadramento')[1],
        /não validado juridicamente/,
    );
    assert.equal(JSON.stringify(simulation), before);
});

void test('CSV preserves the exact amount and refuses a mismatched immutable report', () => {
    const simulation = fixture();
    const csv = exportCompletedArithmeticCsv(
        simulation,
        '2026-10-21T09:00:00Z',
    );
    assert.match(csv, /0\.0048/);
    assert.doesNotMatch(csv, /Resultado fiscal final,Indeterminado/);
    simulation.reports[0].report_snapshot.result.value = '0.00';
    assert.throws(
        () => exportCompletedArithmeticCsv(simulation),
        /relatório preservado/,
    );
});

void test('dossier report uses the same exact snapshot and preserves genuine indetermination', () => {
    const simulation = fixture();
    function report() {
        return createProjectDossierReport(
            { project_title: 'QA fiscal', currency: 'MZN' },
            {
                selectedSections: new Set(['finance']),
                currentCalculation: {
                    status: 'completed',
                    version: 2,
                    snapshot: simulation.result_snapshot,
                },
            },
        );
    }
    const rows = report().sections.find(
        (section) => section.id === 'finance',
    ).rows;
    assert.equal(
        rows.find((row) => row.field.startsWith('IVA calculado')).value,
        '0.0048',
    );
    assert.equal(
        rows.find((row) => row.field === 'Fonte da taxa').value,
        'Lei 22/2022 — Artigo 17(1)',
    );
    simulation.result_snapshot.result.status = 'indeterminate';
    simulation.result_snapshot.result.value = null;
    simulation.result_snapshot.indicative_total = null;
    simulation.result_snapshot.result.missing_inputs = ['eligible_parameter'];
    assert.equal(
        report()
            .sections.find((section) => section.id === 'finance')
            .rows.find((row) => row.field.startsWith('IVA calculado')).value,
        'Indeterminado',
    );
});

void test('published consumer routes the frozen snapshot through screen CSV and dossier without QA labels', () => {
    const simulation = fixture();
    const snapshot = simulation.result_snapshot;
    snapshot.scenario_kind = 'fiscal_rule_published';
    snapshot.context.engine_version = 'fiscal-published-v1';
    snapshot.presentation = {
        value: snapshot.result.value,
        rounding_applied: false,
    };
    snapshot.result.explanation =
        'IVA pela versão publicada; enquadramento declarado.';
    snapshot.fiscal_provenance.rule.status = 'published';
    snapshot.fiscal_provenance.scope_status = 'user_declared';
    snapshot.fiscal_provenance.mode = 'published_version';
    simulation.reports[0].report_snapshot = structuredClone(snapshot);
    const before = JSON.stringify(simulation);
    const rows = fiscalQaRows(snapshot);
    assert.equal(readArithmeticSnapshot(snapshot).integrity, 'versioned');
    assert.match(rows[0][1], /publicada/);
    assert.doesNotMatch(JSON.stringify(rows), /rascunho|não publicada|QA/);
    const csv = exportCompletedArithmeticCsv(
        simulation,
        '2026-10-21T12:00:00Z',
    );
    for (const [label, value] of rows) {
        assert.ok(csv.includes(label));
        assert.ok(csv.includes(value.replaceAll('"', '""')));
    }
    const report = createProjectDossierReport(
        { project_title: 'Published IVA QA', currency: 'MZN' },
        {
            selectedSections: new Set(['finance']),
            currentCalculation: { status: 'completed', version: 2, snapshot },
        },
    );
    const finance = report.sections.find((section) => section.id === 'finance');
    for (const [field, value] of rows)
        assert.ok(
            finance.rows.some(
                (row) => row.field === field && row.value === value,
            ),
        );
    assert.doesNotMatch(JSON.stringify(finance), /rascunho|proveniência QA/);
    assert.equal(JSON.stringify(simulation), before);
});

void test('published consumer indeterminate snapshot is valid and a mismatched presentation is refused', () => {
    const snapshot = fixture().result_snapshot;
    snapshot.scenario_kind = 'fiscal_rule_published';
    snapshot.result.status = 'indeterminate';
    snapshot.result.value = null;
    snapshot.result.missing_inputs = ['operation_scope'];
    snapshot.indicative_total = null;
    snapshot.presentation = { value: null, rounding_applied: false };
    assert.equal(readArithmeticSnapshot(snapshot).integrity, 'versioned');
    snapshot.presentation.value = '0';
    assert.equal(readArithmeticSnapshot(snapshot).integrity, 'invalid');
});