/**
 * Minimal test runner for BB frontend JS tests.
 * No npm dependencies — runs with plain Node.js.
 *
 * Usage: node src-tauri/frontend/js/tests/run.js
 */

let passed = 0;
let failed = 0;
let currentSuite = '';
const failures = [];

function describe(name, fn) {
    currentSuite = name;
    fn();
    currentSuite = '';
}

function test(name, fn) {
    const fullName = currentSuite ? `${currentSuite} > ${name}` : name;
    try {
        fn();
        passed++;
    } catch (err) {
        failed++;
        failures.push({ name: fullName, error: err.message });
    }
}

function assert(condition, message) {
    if (!condition) throw new Error(message || 'Assertion failed');
}

function assertEqual(actual, expected, message) {
    if (actual !== expected) {
        throw new Error(
            message ||
            `Expected ${JSON.stringify(expected)}, got ${JSON.stringify(actual)}`
        );
    }
}

function assertDeepEqual(actual, expected, message) {
    const a = JSON.stringify(actual);
    const e = JSON.stringify(expected);
    if (a !== e) {
        throw new Error(message || `Expected ${e}, got ${a}`);
    }
}

function assertThrows(fn, message) {
    let threw = false;
    try { fn(); } catch (_) { threw = true; }
    if (!threw) throw new Error(message || 'Expected function to throw');
}

function report() {
    console.log(`\n${passed + failed} tests: ${passed} passed, ${failed} failed`);
    if (failures.length > 0) {
        console.log('\nFailures:');
        failures.forEach(f => {
            console.log(`  FAIL: ${f.name}`);
            console.log(`        ${f.error}`);
        });
    }
    return failed === 0;
}

module.exports = { describe, test, assert, assertEqual, assertDeepEqual, assertThrows, report };