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),
            },
        ],
    };
}

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);
});

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/,
    );
});

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",
    );
});

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);
});

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");
});