import { test } from 'node:test';
import assert from 'node:assert/strict';
import { spawn } from 'node:child_process';
import { createServer } from 'node:http';
import { once } from 'node:events';
import { chmodSync, existsSync, mkdirSync, mkdtempSync, readdirSync, readFileSync, rmSync, statSync, writeFileSync } from 'node:fs';
import { tmpdir } from 'node:os';
import { dirname, join } from 'node:path';
import { fileURLToPath } from 'node:url';

// scripts/webui-service.sh (row 75, #1569). Nothing here starts a unit or
// reaches the real systemd: install and uninstall run with --no-reload or a
// stand-in systemctl on PATH, and XDG_CONFIG_HOME points into a temp dir.
// Row 83 (#1576) adds --send, taken only with the preview set. Row 77
// (#1571) adds --copy, the running-unit refusals and the uid rule; every run
// gets a stand-in systemctl, since install now reads the unit's state, and
// install runs with --allow-worktree, since the suite runs in worktrees.
const REPO = fileURLToPath(new URL('../../..', import.meta.url)).replace(/\/$/, '');
const SCRIPT = join(REPO, 'scripts', 'webui-service.sh');
const NODE_DIR = dirname(process.execPath);
const UID = '6f1c0e2a9b8d7c4e5f3a2b1c0d9e8f7a6b5c4d3e2f1a0b9c8d7e6f5a4b3c2d1e';
const PREVIEW = ['--public-host', 'console.example.com', '--auth-header', 'X-authentik-uid', '--allow-user', UID];
const PREVIEW_FLAGS = `--public-host console.example.com --auth-header X-authentik-uid --allow-user ${UID}`;
// A copy as `copy` leaves it, reduced to the file install looks for.
const COPY_ID = '0123456789abcdef0123456789abcdef01234567';
const INSTALL = ['--copy', COPY_ID, '--allow-worktree'];
const copyRoot = (dir) => join(dir, '.local', 'share', 'mosaic-console', COPY_ID);
function fakeCopy(dir) {
  mkdirSync(join(copyRoot(dir), 'packages', 'webui', 'src'), { recursive: true });
  writeFileSync(join(copyRoot(dir), 'packages', 'webui', 'src', 'cli.mjs'), '');
  return copyRoot(dir);
}
const SEND_REFUSAL = /^webui-service: --send needs the preview mode \(--public-host, --auth-header and --allow-user\)$/m;
const TEMPLATE = readFileSync(join(REPO, 'packages', 'webui', 'systemd', 'mosaic-webui.service.in'), 'utf8');

// The unit as the base script renders it (row 75): the template with its four
// placeholders filled in, nothing else. Row 83 adds --send and must leave
// every unit rendered without it byte for byte as this.
function filled(flags, root = REPO) {
  const base = '/usr/local/bin:/usr/bin:/bin';
  const path = `:${base}:`.includes(`:${NODE_DIR}:`) ? base : `${NODE_DIR}:${base}`;
  return TEMPLATE.replaceAll('@REPO@', root).replaceAll('@PATH@', path).replaceAll('@NODE@', process.execPath).replaceAll('@FLAGS@', flags);
}

// A loopback port with nothing listening, so status's /healthz request
// reaches no real Console.
async function closedPort() {
  const server = createServer();
  server.listen(0, '127.0.0.1');
  await once(server, 'listening');
  const { port } = server.address();
  server.close();
  await once(server, 'close');
  return port;
}

function tmp(t) {
  const dir = mkdtempSync(join(tmpdir(), 'webui-service-'));
  t.after(() => rmSync(dir, { recursive: true, force: true }));
  fakeCopy(dir);
  return dir;
}

// The bus unit as `systemctl show -p LoadState -p ExecStart` prints it,
// started from `root`.
const busShow = (root) => `LoadState=loaded\nExecStart={ path=${root}/scripts/mosaic ; argv[]=${root}/scripts/mosaic bus start acme ; ignore_errors=no ; start_time=[n/a] ; stop_time=[n/a] ; pid=0 ; code=(null) ; status=0/0 }\n`;
const BUS_UNITS = 'mosaic-bus@acme.service loaded active running Mosaic bus host (acme)\n';

// A stand-in systemctl that prints `lines` for the Console's list-units and
// logs every call. With `listFails`, that list-units exits 1 after printing
// to stderr. The bus calls install makes are answered apart: `busUnits` for
// the mosaic-bus@ list-units, and `bus` for show, by default a bus started
// from the run's own copy ($HOME, as run() sets it). `busFails` makes both
// bus calls fail.
function standIn(dir, lines = '', { listFails = false, bus = null, busUnits = BUS_UNITS, busFails = false } = {}) {
  const bin = join(dir, 'bin');
  mkdirSync(bin);
  writeFileSync(join(dir, 'list-units.txt'), lines);
  writeFileSync(join(dir, 'bus-units.txt'), busUnits);
  if (bus !== null) writeFileSync(join(dir, 'bus-show.txt'), bus);
  const fail = 'echo "Failed to connect to bus" >&2; exit 1';
  const show = bus !== null ? `cat "${dir}/bus-show.txt"` : `r="$HOME/.local/share/mosaic-console/${COPY_ID}"; printf '%s' "${busShow('$r')}"`;
  writeFileSync(join(bin, 'systemctl'), `#!/bin/sh
echo "$*" >> "${dir}/calls.txt"
case "$*" in
  *list-units*mosaic-bus@*) ${busFails ? fail : `cat "${dir}/bus-units.txt"`} ;;
  *show*mosaic-bus@*) ${busFails ? fail : show} ;;
  *list-units*) ${listFails ? fail : `cat "${dir}/list-units.txt"`} ;;
  *is-enabled*) echo enabled ;;
  *is-active*) echo active ;;
esac
exit 0
`);
  chmodSync(join(bin, 'systemctl'), 0o755);
  return bin;
}

// Without a stand-in of its own, a run gets one that lists nothing (the
// unit not loaded), so no run reaches the real systemd.
function quiet(dir) {
  const home = join(dir, '.quiet');
  if (!existsSync(home)) { mkdirSync(home); standIn(home); }
  return join(home, 'bin');
}
// Every call but the reads: the Console's state and install's bus check.
const READS = /^--user (list-units --no-legend --plain mosaic-webui\.service|list-units --all --no-legend --plain mosaic-bus@\*\.service|show mosaic-bus@\S+ -p LoadState -p ExecStart)$/;
const otherCalls = (file) => readFileSync(file, 'utf8').split('\n').filter(Boolean).filter((c) => !READS.test(c));

// Async, so an in-process server can answer the script's /healthz request.
async function run(dir, args, bin = null) {
  const env = { PATH: `${bin ?? quiet(dir)}:${NODE_DIR}:/usr/bin:/bin`, HOME: dir, XDG_CONFIG_HOME: join(dir, 'config') };
  const child = spawn(SCRIPT, args, { env });
  let stdout = '', stderr = '';
  child.stdout.on('data', (d) => { stdout += d; });
  child.stderr.on('data', (d) => { stderr += d; });
  const [status] = await once(child, 'close');
  return { status, stdout, stderr };
}

const execStart = (unit) => unit.split('\n').find((l) => l.startsWith('ExecStart='));

test('render prints the unit without the preview flags', async (t) => {
  const dir = tmp(t);
  const r = await run(dir, ['render']);
  assert.equal(r.status, 0, r.stderr);
  assert.match(r.stdout, new RegExp(`^WorkingDirectory=${REPO.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}$`, 'm'));
  assert.match(r.stdout, /^Environment=PATH=\S*\/usr\/local\/bin:\/usr\/bin:\/bin$/m);
  assert.equal(execStart(r.stdout), `ExecStart=${process.execPath} ${REPO}/packages/webui/src/cli.mjs serve --port 7332`);
  for (const line of ['Restart=on-failure', 'RestartPreventExitStatus=2', 'NoNewPrivileges=yes', 'WantedBy=default.target']) {
    assert.ok(r.stdout.split('\n').includes(line), line);
  }
  assert.doesNotMatch(r.stdout, /@[A-Z]+@/, 'every placeholder is filled');
});

test('render carries every serve flag, the preview set included', async (t) => {
  const dir = tmp(t);
  const r = await run(dir, ['render', '--port', '7340', '--business', 'mosaic.dev_1', '--board', 'http://127.0.0.1:7331', ...PREVIEW]);
  assert.equal(r.status, 0, r.stderr);
  assert.equal(execStart(r.stdout), `ExecStart=${process.execPath} ${REPO}/packages/webui/src/cli.mjs serve --port 7340 --business mosaic.dev_1 --board http://127.0.0.1:7331 --public-host console.example.com --auth-header X-authentik-uid --allow-user ${UID}`);
});

test('a partial preview set is refused', async (t) => {
  const dir = tmp(t);
  for (const args of [PREVIEW.slice(0, 2), PREVIEW.slice(2, 6), [...PREVIEW.slice(0, 2), ...PREVIEW.slice(4, 6)]]) {
    const r = await run(dir, ['render', ...args]);
    assert.equal(r.status, 1, args.join(' '));
    assert.equal(r.stdout, '');
    assert.match(r.stderr, /all three or none/);
  }
});

test('a value the unit cannot carry is refused, for every flag', async (t) => {
  const dir = tmp(t);
  const set = (flag, value) => {
    const preview = PREVIEW.slice();
    const i = preview.indexOf(flag);
    if (i >= 0) { preview[i + 1] = value; return preview; }
    return [flag, value];
  };
  for (const flag of ['--business', '--board', '--public-host', '--auth-header', '--allow-user']) {
    for (const bad of [' x', '%n', '\n', '$HOME', '"', '\\', '|', '&']) {
      const value = flag === '--board' ? `http://127.0.0.1:7331${bad}` : `a${bad}b`;
      const r = await run(dir, ['render', ...set(flag, value)]);
      assert.equal(r.status, 1, `${flag} ${JSON.stringify(value)}`);
      assert.equal(r.stdout, '', `${flag} ${JSON.stringify(value)}`);
    }
  }
  for (const port of ['0', '65536', '7a', '', '-1', '999999']) {
    const r = await run(dir, ['render', '--port', port]);
    assert.equal(r.status, 1, `port ${JSON.stringify(port)}`);
  }
  for (const args of [['--business', 'Mosaic'], ['--business', '-x'], ['--business', 'a'.repeat(65)], ['--board', 'https://127.0.0.1:7331'], ['--board', '127.0.0.1:7331'], set('--public-host', 'console.example.com:443'), set('--public-host', 'https://console.example.com'), set('--auth-header', 'X_uid')]) {
    const r = await run(dir, ['render', ...args]);
    assert.equal(r.status, 1, args.join(' '));
  }
});

test('the rendered unit names none of the human proof agent markers and sets no agent variable', async (t) => {
  const dir = tmp(t);
  const source = readFileSync(join(REPO, 'packages', 'bus', 'src', 'human.mjs'), 'utf8');
  const markers = [...source.match(/const MARKERS = \[([^\]]*)\]/)[1].matchAll(/'([A-Z_]+)'/g)].map((m) => m[1]);
  assert.ok(markers.length >= 7 && markers.includes('MOSAIC_BUS_CAP') && markers.includes('CLAUDECODE'), markers.join(' '));
  for (const args of [[], [...PREVIEW, '--business', 'mosaic'], [...PREVIEW, '--send']]) {
    const r = await run(dir, ['render', ...args]);
    assert.equal(r.status, 0, r.stderr);
    for (const marker of markers) assert.ok(!r.stdout.includes(marker), marker);
    const envLines = r.stdout.split('\n').filter((l) => /^\s*(Environment|EnvironmentFile|PassEnvironment|UnsetEnvironment)\s*=/.test(l));
    assert.deepEqual(envLines.map((l) => l.split('=')[1]), ['PATH']);
    assert.doesNotMatch(r.stdout, /^[^#]*\b(MOSAIC_|CLAUDE|CODEX|PI_)/m);
  }
});

test('install into --dir with --no-reload writes the file whole, then reports unchanged', async (t) => {
  const dir = tmp(t);
  const unitDir = join(dir, 'units');
  const bin = standIn(dir);
  const rendered = await run(dir, ['render', '--copy', COPY_ID, '--business', 'mosaic']);
  assert.equal(rendered.stdout, filled(`--checkout ${REPO} --port 7332 --business mosaic`, copyRoot(dir)));
  const r = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--business', 'mosaic'], bin);
  assert.equal(r.status, 0, r.stderr);
  const target = join(unitDir, 'mosaic-webui.service');
  assert.match(r.stdout, new RegExp(`^written: ${target}$`, 'm'));
  assert.match(r.stdout, /systemctl --user enable --now mosaic-webui/);
  assert.equal(readFileSync(target, 'utf8'), rendered.stdout);
  assert.equal(statSync(target).mode & 0o777, 0o644);
  assert.deepEqual(readdirSync(unitDir), ['mosaic-webui.service'], 'no temp file left behind');
  const again = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--business', 'mosaic'], bin);
  assert.equal(again.status, 0, again.stderr);
  assert.match(again.stdout, new RegExp(`^unchanged: ${target}$`, 'm'));
  assert.deepEqual(otherCalls(join(dir, 'calls.txt')), [], 'with --no-reload, only the state read');
  // A refused value writes nothing and leaves the installed unit alone.
  const bad = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--business', 'a b'], bin);
  assert.equal(bad.status, 1);
  assert.equal(readFileSync(target, 'utf8'), rendered.stdout);
  assert.deepEqual(readdirSync(unitDir), ['mosaic-webui.service']);
  const fresh = join(dir, 'never');
  assert.equal((await run(dir, ['install', ...INSTALL, '--dir', fresh, '--no-reload', '--port', '0'], bin)).status, 1);
  assert.ok(!existsSync(fresh), 'a refusal creates no directory');
});

test('install without --no-reload runs daemon-reload and nothing that starts the unit', async (t) => {
  const dir = tmp(t);
  const bin = standIn(dir);
  const r = await run(dir, ['install', ...INSTALL, '--dir', join(dir, 'units')], bin);
  assert.equal(r.status, 0, r.stderr);
  assert.match(r.stdout, /^daemon-reload done$/m);
  assert.equal(readFileSync(join(dir, 'calls.txt'), 'utf8'), '--user list-units --all --no-legend --plain mosaic-bus@*.service\n--user show mosaic-bus@acme.service -p LoadState -p ExecStart\n--user list-units --no-legend --plain mosaic-webui.service\n--user daemon-reload\n');
});

test('uninstall refuses while the unit is running, with or without --no-reload, and removes it once it is not', async (t) => {
  const dir = tmp(t);
  const unitDir = join(dir, 'units');
  const target = join(unitDir, 'mosaic-webui.service');
  assert.equal((await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload'])).status, 0);
  for (const state of ['active', 'activating', 'deactivating', 'reloading']) {
    const bin = standIn(mkdtempSync(join(dir, 'si-')), `mosaic-webui.service loaded ${state} running Mosaic Console\n`);
    // N3: --no-reload skips only daemon-reload, never the state read.
    for (const args of [['uninstall', '--dir', unitDir], ['uninstall', '--dir', unitDir, '--no-reload']]) {
      const r = await run(dir, args, bin);
      assert.equal(r.status, 1, `${state} ${args.join(' ')}`);
      assert.equal(r.stderr, `webui-service: refusing: mosaic-webui.service is still running (${state}); Jason or Mos stops it first (systemctl --user stop mosaic-webui)\n`);
      assert.equal(r.stdout, '');
      assert.ok(existsSync(target), `still installed while ${state}`);
    }
  }
  // A failed unit is not running; uninstall goes ahead.
  const failed = standIn(mkdtempSync(join(dir, 'si-')), 'mosaic-webui.service loaded failed failed Mosaic Console\n');
  assert.equal((await run(dir, ['uninstall', '--dir', unitDir, '--no-reload'], failed)).status, 0);
  assert.ok(!existsSync(target));
  assert.equal((await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload'])).status, 0);
  const bin = standIn(mkdtempSync(join(dir, 'si-')), 'mosaic-webui.service loaded inactive dead Mosaic Console\n');
  const r = await run(dir, ['uninstall', '--dir', unitDir], bin);
  assert.equal(r.status, 0, r.stderr);
  assert.match(r.stdout, new RegExp(`^removed: ${target}$`, 'm'));
  assert.match(r.stdout, /^daemon-reload done$/m);
  assert.ok(!existsSync(target));
  const absent = await run(dir, ['uninstall', '--dir', unitDir, '--no-reload'], bin);
  assert.equal(absent.status, 0);
  assert.match(absent.stdout, /^absent: /m);
});

test('status prints the unit state and GET /healthz on the installed port', async (t) => {
  const dir = tmp(t);
  const unitDir = join(dir, 'units');
  const bin = standIn(dir);
  const server = createServer((req, res) => {
    if (req.url === '/healthz') { res.writeHead(200, { 'content-type': 'application/json' }); res.end('{"ok":true}\n'); return; }
    res.writeHead(404); res.end();
  });
  server.listen(0, '127.0.0.1');
  await once(server, 'listening');
  t.after(() => server.close());
  const { port } = server.address();
  assert.equal((await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--port', String(port)])).status, 0);
  const r = await run(dir, ['status', '--dir', unitDir], bin);
  assert.equal(r.status, 0, r.stderr);
  assert.match(r.stdout, new RegExp(`^copy: ${COPY_ID}$`, 'm'));
  assert.match(r.stdout, /^ {2}enabled: enabled$/m);
  assert.match(r.stdout, /^ {2}active: {2}active$/m);
  assert.match(r.stdout, new RegExp(`^healthz: http://127\\.0\\.0\\.1:${port}/healthz 200 \\{"ok":true\\}$`, 'm'));
  server.close();
  await once(server, 'close');
  const down = await run(dir, ['status', '--dir', unitDir], bin);
  assert.equal(down.status, 0, down.stderr);
  assert.match(down.stdout, /^healthz: \S+ unreachable \(ECONNREFUSED\)$/m);
  const none = await run(dir, ['status', '--dir', join(dir, 'empty')], bin);
  assert.match(none.stdout, /^healthz: not checked; no unit at /m);
});

test('usage: an unknown verb or flag, and start or enable, exit 4', async (t) => {
  const dir = tmp(t);
  for (const args of [[], ['start'], ['stop'], ['enable'], ['restart'], ['render', '--bogus'], ['render', '--port'], ['render', '--dir', dir], ['render', '--no-reload'], ['uninstall', '--port', '7332'], ['status', '--business', 'mosaic'], ['status', '--no-reload'], ['render', '--send', 'yes', ...PREVIEW], ['render', '--allow-worktree'], ['render', '--copies', dir], ['uninstall', '--copy', COPY_ID], ['uninstall', '--allow-worktree'], ['status', '--copy', COPY_ID], ['status', '--allow-worktree'], ['install', '--copy']]) {
    const r = await run(dir, args);
    assert.equal(r.status, 4, args.join(' '));
    assert.match(r.stderr, /^usage: scripts\/webui-service\.sh/);
  }
});

test('without --send, render is the template with its placeholders filled, byte for byte', async (t) => {
  const dir = tmp(t);
  for (const [args, flags] of [
    [[], '--port 7332'],
    [['--port', '7340'], '--port 7340'],
    [['--business', 'mosaic'], '--port 7332 --business mosaic'],
    [PREVIEW, `--port 7332 ${PREVIEW_FLAGS}`],
    [['--port', '7340', '--business', 'mosaic.dev_1', '--board', 'http://127.0.0.1:7331', ...PREVIEW], `--port 7340 --business mosaic.dev_1 --board http://127.0.0.1:7331 ${PREVIEW_FLAGS}`],
  ]) {
    const r = await run(dir, ['render', ...args]);
    assert.equal(r.status, 0, r.stderr);
    assert.equal(r.stdout, filled(flags), args.join(' '));
  }
});

test('render --send with the preview set ends ExecStart with --send and changes nothing else', async (t) => {
  const dir = tmp(t);
  const extra = ['--port', '7340', '--business', 'mosaic'];
  for (const args of [[...PREVIEW, '--send'], ['--send', ...PREVIEW], [...PREVIEW.slice(0, 2), '--send', ...PREVIEW.slice(2)], ['--send', ...extra, ...PREVIEW]]) {
    const plain = args.filter((a) => a !== '--send');
    const flags = `${plain.includes('--port') ? '--port 7340 --business mosaic' : '--port 7332'} ${PREVIEW_FLAGS}`;
    const r = await run(dir, ['render', ...args]);
    assert.equal(r.status, 0, r.stderr);
    assert.equal(r.stdout, filled(`${flags} --send`), args.join(' '));
    assert.ok(execStart(r.stdout).endsWith(` --allow-user ${UID} --send`), execStart(r.stdout));
    const without = await run(dir, ['render', ...plain]);
    assert.equal(without.status, 0, without.stderr);
    const a = r.stdout.split('\n'), b = without.stdout.split('\n');
    assert.equal(a.length, b.length);
    assert.deepEqual(a.map((l, i) => (l === b[i] ? null : [l, b[i]])).filter(Boolean), [[`${execStart(without.stdout)} --send`, execStart(without.stdout)]]);
  }
});

test('--send without the whole preview set is refused and writes nothing', async (t) => {
  const dir = tmp(t);
  const pairs = [PREVIEW.slice(0, 2), PREVIEW.slice(2, 4), PREVIEW.slice(4, 6)];
  const partial = [[], ['--port', '7340'], ['--business', 'mosaic'], ...pairs, [...pairs[0], ...pairs[1]], [...pairs[0], ...pairs[2]], [...pairs[1], ...pairs[2]]];
  for (const args of partial) {
    const r = await run(dir, ['render', '--send', ...args]);
    assert.equal(r.status, 1, args.join(' '));
    assert.equal(r.stdout, '', args.join(' '));
    assert.match(r.stderr, SEND_REFUSAL, args.join(' '));
  }
  const bin = standIn(dir);
  const fresh = join(dir, 'never');
  for (const args of partial) {
    const r = await run(dir, ['install', ...INSTALL, '--dir', fresh, '--no-reload', ...args, '--send'], bin);
    assert.equal(r.status, 1, args.join(' '));
    assert.match(r.stderr, SEND_REFUSAL, args.join(' '));
  }
  assert.ok(!existsSync(fresh), 'a refusal creates no directory');
  const unitDir = join(dir, 'units');
  const target = join(unitDir, 'mosaic-webui.service');
  assert.equal((await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', ...PREVIEW], bin)).status, 0);
  const before = readFileSync(target, 'utf8');
  const r = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--send', ...PREVIEW.slice(0, 4)], bin);
  assert.equal(r.status, 1);
  assert.equal(readFileSync(target, 'utf8'), before, 'the installed unit is left alone');
  assert.deepEqual(readdirSync(unitDir), ['mosaic-webui.service']);
  assert.deepEqual(otherCalls(join(dir, 'calls.txt')), [], 'no systemctl call but the one state read');
});

test('install --send into --dir with --no-reload writes the sending unit, and status says whether it sends', async (t) => {
  const dir = tmp(t);
  const unitDir = join(dir, 'units');
  const target = join(unitDir, 'mosaic-webui.service');
  const port = await closedPort();
  const flags = `--port ${port} ${PREVIEW_FLAGS}`;
  const r = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--port', String(port), ...PREVIEW, '--send']);
  assert.equal(r.status, 0, r.stderr);
  assert.match(r.stdout, new RegExp(`^written: ${target}$`, 'm'));
  // Lead decision 102: Jason or Mos starts it, no other agent.
  assert.match(r.stdout, /^this script starts nothing: .* Jason\nstarts and restarts it, or Mos under lead decision 102 .*\ntrail as Jason\); no other agent does:$/m);
  const esc = (s) => s.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
  assert.match(r.stdout, new RegExp(`^serve: \\S+ ${esc(copyRoot(dir))}/packages/webui/src/cli\\.mjs serve --checkout ${esc(REPO)} ${flags} --send$`, 'm'));
  assert.equal(readFileSync(target, 'utf8'), filled(`--checkout ${REPO} ${flags} --send`, copyRoot(dir)));
  assert.equal(statSync(target).mode & 0o777, 0o644);
  assert.deepEqual(readdirSync(unitDir), ['mosaic-webui.service']);
  const bin = standIn(dir);
  const sending = await run(dir, ['status', '--dir', unitDir], bin);
  assert.equal(sending.status, 0, sending.stderr);
  assert.match(sending.stdout, /^send: on \(--send; human messages to roles\)$/m);
  assert.match(sending.stdout, /^healthz: \S+ unreachable \(ECONNREFUSED\)$/m);
  const again = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--port', String(port), '--send', ...PREVIEW], bin);
  assert.match(again.stdout, new RegExp(`^unchanged: ${target}$`, 'm'));
  const readOnly = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--port', String(port), ...PREVIEW], bin);
  assert.match(readOnly.stdout, new RegExp(`^written: ${target}$`, 'm'));
  assert.equal(readFileSync(target, 'utf8'), filled(`--checkout ${REPO} ${flags}`, copyRoot(dir)));
  const off = await run(dir, ['status', '--dir', unitDir], bin);
  assert.match(off.stdout, /^send: off \(read-only\)$/m);
  assert.doesNotMatch(off.stdout, /^send: on/m);
  // The only systemctl calls are status's reads and install's state read.
  assert.deepEqual(otherCalls(join(dir, 'calls.txt')).filter((c) => !/^--user (is-enabled|is-active|show) mosaic-webui\.service/.test(c)), []);
  const none = await run(dir, ['status', '--dir', join(dir, 'empty')], bin);
  assert.doesNotMatch(none.stdout, /^send:/m, 'no unit, no send line');
  // serve would take --send as an allowed user; N5 refuses it, so no unit
  // ends with `--allow-user --send` without sending.
  const before = readFileSync(target, 'utf8');
  for (const args of [['--public-host', 'console.example.com', '--auth-header', 'X-authentik-username', '--allow-user', '--send'], ['--public-host', 'console.example.com', '--auth-header', 'X-authentik-username', '--allow-user', '--send', '--send']]) {
    const r = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--port', String(port), ...args]);
    assert.equal(r.status, 1, args.join(' '));
    assert.match(r.stderr, /^webui-service: allowed user must start with a letter or digit: --send$/m);
  }
  assert.equal(readFileSync(target, 'utf8'), before);
});

test('uninstall and status take no --send', async (t) => {
  const dir = tmp(t);
  const bin = standIn(dir);
  const unitDir = join(dir, 'units');
  assert.equal((await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', ...PREVIEW, '--send'])).status, 0);
  for (const args of [['uninstall', '--dir', unitDir, '--send'], ['uninstall', '--dir', unitDir, '--no-reload', '--send'], ['status', '--dir', unitDir, '--send']]) {
    const r = await run(dir, args, bin);
    assert.equal(r.status, 4, args.join(' '));
    assert.match(r.stderr, /^usage: scripts\/webui-service\.sh/);
    assert.equal(r.stdout, '', args.join(' '));
  }
  assert.ok(existsSync(join(unitDir, 'mosaic-webui.service')), 'still installed');
  assert.ok(!existsSync(join(dir, 'calls.txt')), 'no systemctl call');
});

// Row 77 (#1571) from here on.
const esc = (s) => s.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');

test('install refuses while the unit is running, in any state but inactive or failed, and changes nothing', async (t) => {
  const dir = tmp(t);
  const unitDir = join(dir, 'units');
  const target = join(unitDir, 'mosaic-webui.service');
  assert.equal((await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload'])).status, 0);
  const before = readFileSync(target, 'utf8');
  for (const state of ['active', 'activating', 'deactivating', 'reloading']) {
    const home = mkdtempSync(join(dir, 'si-'));
    const bin = standIn(home, `mosaic-webui.service loaded ${state} running Mosaic Console\n`);
    for (const reload of [[], ['--no-reload']]) {
      const r = await run(dir, ['install', ...INSTALL, '--dir', unitDir, ...reload, '--port', '7444'], bin);
      assert.equal(r.status, 1, `${state} ${reload}`);
      assert.equal(r.stderr, `webui-service: refusing: mosaic-webui.service is running (${state}); Jason or Mos stops it first (systemctl --user stop mosaic-webui), then install, then start it\n`);
      assert.equal(r.stdout, '');
    }
    assert.deepEqual(otherCalls(join(home, 'calls.txt')), [], 'no daemon-reload');
    assert.equal(readFileSync(target, 'utf8'), before, `unit left alone while ${state}`);
    assert.deepEqual(readdirSync(unitDir), ['mosaic-webui.service'], 'no temp file left');
  }
  // inactive, failed, another unit's line, or nothing listed: install goes ahead.
  for (const lines of ['mosaic-webui.service loaded inactive dead Mosaic Console\n', 'mosaic-webui.service loaded failed failed Mosaic Console\n', 'mosaic-bus@x.service loaded active running Bus\n', '']) {
    const bin = standIn(mkdtempSync(join(dir, 'si-')), lines);
    const r = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--port', '7444'], bin);
    assert.equal(r.status, 0, `${JSON.stringify(lines)}: ${r.stderr}`);
  }
});

test('when the state read fails, install and uninstall refuse with one line and change nothing', async (t) => {
  const dir = tmp(t);
  const unitDir = join(dir, 'units');
  const target = join(unitDir, 'mosaic-webui.service');
  assert.equal((await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload'])).status, 0);
  const before = readFileSync(target, 'utf8');
  const home = mkdtempSync(join(dir, 'si-'));
  const bin = standIn(home, '', { listFails: true });
  const refusal = 'webui-service: refusing: systemctl --user list-units --no-legend --plain mosaic-webui.service failed, so the unit\'s state is unknown; nothing was changed\n';
  for (const args of [['install', ...INSTALL, '--dir', unitDir, '--port', '7444'], ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--port', '7444'], ['uninstall', '--dir', unitDir], ['uninstall', '--dir', unitDir, '--no-reload']]) {
    const r = await run(dir, args, bin);
    assert.equal(r.status, 1, args.join(' '));
    assert.equal(r.stderr, refusal, args.join(' '));
    assert.equal(r.stdout, '');
  }
  assert.deepEqual(otherCalls(join(home, 'calls.txt')), [], 'no daemon-reload');
  assert.equal(readFileSync(target, 'utf8'), before);
  assert.deepEqual(readdirSync(unitDir), ['mosaic-webui.service']);
});

test('install needs --copy naming a copy that exists, and refuses outside the canonical checkout without --allow-worktree', async (t) => {
  const dir = tmp(t);
  const unitDir = join(dir, 'units');
  const cases = [
    [[], /^webui-service: install needs --copy ID, a copy made with: scripts\/webui-service\.sh copy COMMIT$/m],
    [['--copy', COPY_ID.slice(0, 12)], /^webui-service: --copy must be a full 40-character commit id: 0123456789ab$/m],
    [['--copy', COPY_ID.toUpperCase()], /^webui-service: --copy must be a full 40-character commit id: /m],
    [['--copy', `${COPY_ID}0`], /^webui-service: --copy must be a full 40-character commit id: /m],
    [['--copy', 'f'.repeat(40)], new RegExp(`^webui-service: no copy ${'f'.repeat(40)} in ${esc(join(dir, '.local', 'share', 'mosaic-console'))}; make it with: scripts/webui-service\\.sh copy ${'f'.repeat(40)}$`, 'm')],
    [['--copy', COPY_ID, '--copies', 'relative'], /^webui-service: copies directory must be an absolute path: relative$/m],
    [['--copy', COPY_ID, '--copies', join(dir, 'no copies')], /^webui-service: copies directory contains a character the unit cannot carry: /m],
  ];
  for (const [copy, refusal] of cases) {
    const r = await run(dir, ['install', '--allow-worktree', ...copy, '--dir', unitDir, '--no-reload']);
    assert.equal(r.status, 1, copy.join(' '));
    assert.match(r.stderr, refusal, copy.join(' '));
    assert.ok(!existsSync(unitDir), copy.join(' '));
  }
  // This suite runs in a git worktree, whose .git is a file: without
  // --allow-worktree, install refuses before it reads anything else.
  if (!statSync(join(REPO, '.git')).isDirectory()) {
    const r = await run(dir, ['install', '--copy', COPY_ID, '--dir', unitDir, '--no-reload']);
    assert.equal(r.status, 1);
    assert.equal(r.stderr, `webui-service: refusing: ${REPO} is not the canonical checkout (its .git is not a directory); run copy and install from the canonical checkout\n`);
    assert.ok(!existsSync(unitDir));
  }
  // --copies moves where the copy is looked for.
  const other = join(dir, 'other');
  mkdirSync(join(other, COPY_ID, 'packages', 'webui', 'src'), { recursive: true });
  writeFileSync(join(other, COPY_ID, 'packages', 'webui', 'src', 'cli.mjs'), '');
  const otherBus = join(dir, 'other-bus');
  mkdirSync(otherBus);
  const r = await run(dir, ['install', ...INSTALL, '--copies', other, '--dir', unitDir, '--no-reload'], standIn(otherBus, '', { bus: busShow(join(other, COPY_ID)) }));
  assert.equal(r.status, 0, r.stderr);
  assert.equal(readFileSync(join(unitDir, 'mosaic-webui.service'), 'utf8'), filled(`--checkout ${REPO} --port 7332`, join(other, COPY_ID)));
});

// The bus accepts only its own human-cli.mjs (packages/bus/src/human.mjs),
// so a Console on a copy needs its bus on that same copy. install reads the
// bus unit's effective ExecStart (a drop-in counts) and refuses otherwise.
test('install refuses unless the bus unit runs from the same copy, naming both paths, and changes nothing', async (t) => {
  const dir = tmp(t);
  const unitDir = join(dir, 'units');
  const copy = copyRoot(dir);
  const install = (bin, extra = []) => run(dir, ['install', ...INSTALL, ...extra, '--dir', unitDir, '--no-reload'], bin);
  let n = 0;
  const sys = (opts, lines = '') => { const d = join(dir, `s${n++}`); mkdirSync(d); return { d, bin: standIn(d, lines, opts) }; };
  const refused = (r, line) => {
    assert.equal(r.status, 1);
    assert.equal(r.stderr, `webui-service: refusing: ${line}\n`);
    assert.ok(!existsSync(unitDir));
  };

  // The bus runs from the checkout, as mosaic-bus@ does today: refused,
  // with the bus's path and the copy's.
  let s = sys({ bus: busShow(REPO) });
  refused(await install(s.bin), `mosaic-bus@acme.service runs from ${REPO}/scripts/mosaic, not the copy ${copy}; the bus accepts only its own human-cli.mjs, so every Console bus call would fail human-required until the bus runs from the same copy`);
  // Refused before the Console state is read.
  assert.ok(!readFileSync(join(s.d, 'calls.txt'), 'utf8').includes('mosaic-webui'));
  // The same with --business, which names the one unit to read.
  s = sys({ bus: busShow(REPO) });
  refused(await install(s.bin, ['--business', 'acme']), `mosaic-bus@acme.service runs from ${REPO}/scripts/mosaic, not the copy ${copy}; the bus accepts only its own human-cli.mjs, so every Console bus call would fail human-required until the bus runs from the same copy`);
  assert.equal(readFileSync(join(s.d, 'calls.txt'), 'utf8'), '--user show mosaic-bus@acme.service -p LoadState -p ExecStart\n');
  // A path that only starts with the copy's name is not inside it.
  s = sys({ bus: busShow(`${copy}-old`) });
  refused(await install(s.bin), `mosaic-bus@acme.service runs from ${copy}-old/scripts/mosaic, not the copy ${copy}; the bus accepts only its own human-cli.mjs, so every Console bus call would fail human-required until the bus runs from the same copy`);
  // Two loaded bus units: each must run from the copy.
  s = sys({ busUnits: `${BUS_UNITS}mosaic-bus@other.service loaded active running Mosaic bus host (other)\n` });
  assert.equal((await install(s.bin)).status, 0);
  assert.match(readFileSync(join(s.d, 'calls.txt'), 'utf8'), /show mosaic-bus@other\.service -p LoadState -p ExecStart/);
  rmSync(unitDir, { recursive: true });

  // No bus unit installed for the business: refused.
  s = sys({ bus: 'LoadState=not-found\nExecStart=\n' });
  refused(await install(s.bin, ['--business', 'acme']), `no bus unit mosaic-bus@acme.service is installed (LoadState not-found); the Console on the copy ${copy} needs its bus on that copy`);
  // No --business and no mosaic-bus@ unit loaded: refused.
  s = sys({ busUnits: '' });
  refused(await install(s.bin), `no mosaic-bus@ unit is loaded, and the Console on the copy ${copy} needs its bus on that copy; name the business with --business ID`);
  // A loaded unit with no ExecStart path: refused.
  s = sys({ bus: 'LoadState=loaded\nExecStart=\n' });
  refused(await install(s.bin), 'mosaic-bus@acme.service has no ExecStart path, so where its bus runs from is unknown; nothing was changed');
  // A failed systemctl call: one line, nothing changed.
  s = sys({ busFails: true });
  refused(await install(s.bin), 'systemctl --user list-units --all --no-legend --plain mosaic-bus@*.service failed, so the bus unit is unknown; nothing was changed');
  s = sys({ busFails: true });
  refused(await install(s.bin, ['--business', 'acme']), 'systemctl --user show mosaic-bus@acme.service failed, so the bus unit is unknown; nothing was changed');

  // The bus runs from the same copy: accepted, with or without --business.
  for (const extra of [[], ['--business', 'acme']]) {
    s = sys({ bus: busShow(copy) });
    const r = await install(s.bin, extra);
    assert.equal(r.status, 0, r.stderr);
    assert.ok(existsSync(join(unitDir, 'mosaic-webui.service')));
    rmSync(unitDir, { recursive: true });
  }
});

test('render --copy runs the copy and reads the queue in the checkout; without --copy the unit is unchanged', async (t) => {
  const dir = tmp(t);
  const r = await run(dir, ['render', '--copy', COPY_ID, ...PREVIEW, '--send']);
  assert.equal(r.status, 0, r.stderr);
  assert.equal(r.stdout, filled(`--checkout ${REPO} --port 7332 ${PREVIEW_FLAGS} --send`, copyRoot(dir)));
  assert.match(r.stdout, new RegExp(`^WorkingDirectory=${esc(copyRoot(dir))}$`, 'm'));
  assert.match(r.stdout, new RegExp(`^ExecStart=\\S+ ${esc(copyRoot(dir))}/packages/webui/src/cli\\.mjs serve --checkout ${esc(REPO)} `, 'm'));
  const plain = await run(dir, ['render', ...PREVIEW]);
  assert.equal(plain.stdout, filled(`--port 7332 ${PREVIEW_FLAGS}`));
  assert.ok(!execStart(plain.stdout).includes('--checkout'));
  // render only prints: it takes no --allow-worktree and needs no canonical checkout.
  assert.equal((await run(dir, ['render', '--copy', 'f'.repeat(40)])).status, 1);
});

test('the uid header takes only an Authentik uid; the username header still takes a username', async (t) => {
  const dir = tmp(t);
  const unitDir = join(dir, 'units');
  const head = ['--public-host', 'console.example.com', '--auth-header'];
  for (const header of ['X-authentik-uid', 'x-authentik-uid', 'X-AUTHENTIK-UID', 'x-AUTHENTIK-uid']) {
    const ok = await run(dir, ['render', ...head, header, '--allow-user', UID]);
    assert.equal(ok.status, 0, `${header}: ${ok.stderr}`);
    for (const user of [UID.slice(1), `${UID}0`, UID.toUpperCase(), `${UID.slice(0, 63)}g`, 'jason', 'jason@example.com']) {
      for (const verb of [['render'], ['install', ...INSTALL, '--dir', unitDir, '--no-reload']]) {
        const r = await run(dir, [...verb, ...head, header, '--allow-user', user]);
        assert.equal(r.status, 1, `${verb[0]} ${header} ${user}`);
        assert.equal(r.stderr, `webui-service: with --auth-header ${header} the allowed user must be an Authentik uid, 64 lower-case hex characters (^[0-9a-f]{64}$, lead decision 101): ${user}\n`);
      }
    }
  }
  assert.ok(!existsSync(unitDir), 'no refused install wrote a unit');
  for (const user of ['jason', 'jason@example.com', UID]) {
    const r = await run(dir, ['render', ...head, 'X-authentik-username', '--allow-user', user]);
    assert.equal(r.status, 0, `${user}: ${r.stderr}`);
    assert.ok(execStart(r.stdout).endsWith(` --allow-user ${user}`));
  }
});

test('a preview value cannot start with - or .', async (t) => {
  const dir = tmp(t);
  const cases = [
    [['--public-host', '-x.example.com', '--auth-header', 'X-authentik-uid', '--allow-user', UID], 'public host must be a hostname, no port or scheme: -x.example.com'],
    [['--public-host', '.example.com', '--auth-header', 'X-authentik-uid', '--allow-user', UID], 'public host must be a hostname, no port or scheme: .example.com'],
    [['--public-host', 'console.example.com', '--auth-header', '-X-authentik-uid', '--allow-user', UID], 'auth header must be a header name: -X-authentik-uid'],
    [['--public-host', 'console.example.com', '--auth-header', 'X-authentik-username', '--allow-user', '-jason'], 'allowed user must start with a letter or digit: -jason'],
    [['--public-host', 'console.example.com', '--auth-header', 'X-authentik-username', '--allow-user', '.jason'], 'allowed user must start with a letter or digit: .jason'],
    [['--public-host', 'console.example.com', '--auth-header', 'X-authentik-username', '--allow-user', '--port'], 'allowed user must start with a letter or digit: --port'],
  ];
  for (const [args, refusal] of cases) {
    const r = await run(dir, ['render', ...args]);
    assert.equal(r.status, 1, args.join(' '));
    assert.equal(r.stderr, `webui-service: ${refusal}\n`);
  }
});

test('status names the copy and whether refactor has moved past it, and says when the unit runs from no copy', async (t) => {
  const dir = tmp(t);
  const unitDir = join(dir, 'units');
  const target = join(unitDir, 'mosaic-webui.service');
  const bin = standIn(mkdtempSync(join(dir, 'si-')));
  const port = await closedPort();
  const head = await new Promise((resolve, reject) => {
    const git = spawn('git', ['-C', REPO, 'rev-parse', '--verify', 'refs/heads/refactor']);
    let out = '';
    git.stdout.on('data', (d) => { out += d; });
    git.on('close', (code) => (code === 0 ? resolve(out.trim()) : reject(new Error('no refs/heads/refactor'))));
  });
  // status only reads the unit file, so a hand-written one stands in.
  mkdirSync(unitDir);
  const unit = (wd) => writeFileSync(target, `[Service]\nWorkingDirectory=${wd}\nExecStart=/usr/bin/node ${wd}/packages/webui/src/cli.mjs serve --port ${port}\n`);
  unit(join(dir, 'copies', head));
  let r = await run(dir, ['status', '--dir', unitDir], bin);
  assert.equal(r.status, 0, r.stderr);
  assert.match(r.stdout, new RegExp(`^copy: ${head}\nrefactor: ${head}, the copy's commit$`, 'm'));
  unit(join(dir, 'copies', COPY_ID));
  r = await run(dir, ['status', '--dir', unitDir], bin);
  assert.match(r.stdout, new RegExp(`^copy: ${COPY_ID}\nrefactor: ${head}, another commit; the copy is ${COPY_ID}$`, 'm'));
  unit(REPO);
  r = await run(dir, ['status', '--dir', unitDir], bin);
  assert.match(r.stdout, new RegExp(`^copy: none; the unit runs from ${esc(REPO)}$`, 'm'));
  assert.ok(!/^refactor:/m.test(r.stdout));
  // status reads; it calls nothing that changes the unit.
  assert.deepEqual(readFileSync(join(dir, readdirSync(dir).find((d) => d.startsWith('si-')), 'calls.txt'), 'utf8').split('\n').filter(Boolean).filter((c) => !/^--user (is-enabled|is-active|show) mosaic-webui\.service( |$)/.test(c)), []);
});