/**
 * Tests for hoover/components/applyconfirm.js
 *
 * Component-level tests: VNode structure, buildRows logic,
 * and integration behaviour. Run with `node tests/test-applyconfirm.js`.
 */

import { buildRows, isPending, SUBSYSTEM_LIST } from '../webui/static/hoover/components/applyconfirm.js';

const SUBSYSTEM_KEYS = SUBSYSTEM_LIST.map(s => s.key);

let passed = 0;
let failed = 0;

function test(name, fn) {
  try {
    fn();
    console.log(`  \u2713 ${name}`);
    passed++;
  } catch (e) {
    console.error(`  \u2717 ${name}: ${e.message}`);
    failed++;
  }
}

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

function assertEq(a, b, msg) {
  if (a !== b) throw new Error(msg || `Expected ${b}, got ${a}`);
}

function assertIncludes(str, substr, msg) {
  if (!str.includes(substr)) throw new Error(msg || `Expected "${str}" to contain "${substr}"`);
}

console.log('Testing ApplyConfirm component\n');

// === isPending ===
test('isPending returns true for needs_apply', () => {
  assertEq(isPending({ needs_apply: true }), true);
});

test('isPending returns true for pending_changes', () => {
  assertEq(isPending({ pending_changes: true }), true);
});

test('isPending returns false when neither flag set', () => {
  assertEq(isPending({}), false);
});

test('isPending returns false for explicit false', () => {
  assertEq(isPending({ needs_apply: false, pending_changes: false }), false);
});

// === SUBSYSTEM_LIST ===
test('SUBSYSTEM_LIST contains 5 subsystems', () => {
  assertEq(SUBSYSTEM_LIST.length, 5);
});

test('SUBSYSTEM_LIST uses networkd key (not network)', () => {
  assertIncludes(SUBSYSTEM_KEYS.join(','), 'networkd', 'SUBSYSTEM_LIST should contain networkd');
  assert(SUBSYSTEM_KEYS.indexOf('network') === -1, 'SUBSYSTEM_LIST should NOT contain network');
});

test('SUBSYSTEM_LIST keys match daemon response keys', () => {
  const expectedKeys = ['firewall', 'dnsmasq', 'nginx', 'wireguard', 'networkd'];
  for (const key of expectedKeys) {
    assert(SUBSYSTEM_KEYS.includes(key), `SUBSYSTEM_LIST should contain ${key}`);
  }
});

// === buildRows ===
test('buildRows returns 5 rows for empty subsystems', () => {
  const rows = buildRows({}, {});
  assertEq(rows.length, 5, 'should have 5 subsystem rows for empty state');
});

test('buildRows marks pending firewall subsystem correctly', () => {
  const data = {
    firewall: {
      needs_apply: true,
      changes: [
        { summary: 'Zone internal: interfaces changed', detail: '' },
      ],
    },
  };
  const rows = buildRows(data, {});
  const fwRow = rows[0];
  assertIncludes(fwRow.props.class, 'pending', 'firewall row should have pending class');
});

test('buildRows changes are VNodes with proper structure', () => {
  const data = {
    firewall: {
      needs_apply: true,
      changes: [
        { summary: 'Zone internal: interfaces changed', detail: '' },
      ],
    },
  };
  const rows = buildRows(data, {});
  const fwRow = rows[0];
  // Status span should contain "1 pending changes"
  const statusSpan = fwRow.ch.find(c => c.props.class && c.props.class.includes('apply-subsystem-status'));
  assert(statusSpan, 'should have status span');
  const textChild = statusSpan.ch.find(c => c.tag === '#text');
  assert(textChild && textChild.text.includes('pending changes'), 'status should contain pending changes count');
});

test('buildRows marks pending dnsmasq subsystem correctly', () => {
  const data = {
    dnsmasq: {
      pending_changes: true,
      changes: [
        { summary: 'DHCP/DNS configuration has unapplied changes', detail: '' },
      ],
    },
  };
  const rows = buildRows(data, {});
  const dnsmasqRow = rows[1];
  assertIncludes(dnsmasqRow.props.class, 'pending', 'dnsmasq row should have pending class');
});

test('buildRows shows correct change count text', () => {
  const data = {
    dnsmasq: {
      pending_changes: true,
      changes: [
        { summary: 'Range 1', detail: '' },
        { summary: 'Range 2', detail: '' },
      ],
    },
  };
  const rows = buildRows(data, {});
  const dnsmasqRow = rows[1];
  const statusSpan = dnsmasqRow.ch.find(c => c.props.class && c.props.class.includes('apply-subsystem-status'));
  const textChild = statusSpan.ch.find(c => c.tag === '#text');
  assertEq(textChild.text, '2 pending changes');
});

test('buildRows shows up-to-date for non-pending', () => {
  const data = {
    nginx: { pending_changes: false, changes: [] },
    wireguard: { pending_changes: false, changes: [] },
  };
  const rows = buildRows(data, {});
  const nginxRow = rows[2];
  assert(
    !nginxRow.props.class.includes('pending'),
    'nginx row should not have pending class',
  );
  const statusSpan = nginxRow.ch.find(c => c.props.class && c.props.class.includes('apply-subsystem-status'));
  const textChild = statusSpan.ch.find(c => c.tag === '#text');
  assertEq(textChild.text, 'Up to date');
});

test('buildRows shows expand icon and details when expanded', () => {
  const data = {
    firewall: {
      needs_apply: true,
      changes: [
        { summary: 'Zone internal: interfaces changed', detail: '' },
        { summary: 'Zone dmz: services changed', detail: '' },
      ],
    },
  };
  const rows = buildRows(data, { firewall: true });
  assertEq(rows.length, 6, 'should have 6 items (5 rows + 1 detail section)');
});

test('buildRows hides expand icon when not expanded', () => {
  const data = {
    firewall: {
      needs_apply: true,
      changes: [
        { summary: 'Zone internal: interfaces changed', detail: '' },
      ],
    },
  };
  const rows = buildRows(data, {});
  assertEq(rows.length, 5, 'should only have 5 rows, no detail section');
});

test('buildRows pending flag but no changes treated as up-to-date', () => {
  const data = {
    firewall: { needs_apply: true, changes: [] },
  };
  const rows = buildRows(data, {});
  const fwRow = rows[0];
  assert(
    !fwRow.props.class.includes('pending'),
    'no changes = up to date',
  );
});

test('buildRows detail section contains item VNodes', () => {
  const data = {
    firewall: {
      needs_apply: true,
      changes: [
        { summary: 'Zone internal: interfaces changed', detail: '' },
      ],
    },
  };
  const rows = buildRows(data, { firewall: true });
  const detailSection = rows[1];
  assertIncludes(detailSection.props.class, 'apply-detail-section', 'should be detail section');
  assert(detailSection.ch.length > 0, 'detail section should have children');
});

test('buildRows handles networkd key correctly', () => {
  const data = {
    networkd: {
      pending_changes: true,
      changes: [
        { summary: 'Network configuration has unapplied changes', detail: '' },
      ],
    },
  };
  const rows = buildRows(data, {});
  const networkdRow = rows[4]; // networkd is 5th in list
  assertIncludes(networkdRow.props.class, 'pending', 'networkd row should have pending class');
});

test('buildRows row VNodes have correct tag', () => {
  const data = {
    firewall: { needs_apply: true, changes: [{ summary: 'test', detail: '' }] },
  };
  const rows = buildRows(data, {});
  for (const row of rows.slice(0, 5)) {
    assertEq(row.tag, 'div', 'row should be a div');
    assert(row.props.class.includes('apply-subsystem-row'), 'row should have apply-subsystem-row class');
  }
});

console.log(`\n${passed} passed, ${failed} failed`);
process.exit(failed > 0 ? 1 : 0);