// tests/kb-update/test-template-generation.test.mjs
// Structural-regex tests for scripts/kb-update/templates/* (Step 8).
// Verifies that each template file exists, contains the documented sentinel
// strings, and exposes the documented placeholder set. No template execution
// or real scheduling occurs in this test — that lives in Wave 6 live-test.

import { test } from 'node:test';
import assert from 'node:assert/strict';
import { readFileSync, existsSync } from 'node:fs';
import { join, dirname } from 'node:path';
import { fileURLToPath } from 'node:url';

const __dirname = dirname(fileURLToPath(import.meta.url));
const TEMPLATES_DIR = join(__dirname, '..', '..', 'scripts', 'kb-update', 'templates');

const PLIST = join(TEMPLATES_DIR, 'com.fromaitochitta.ms-ai-architect.kb-update.plist');
const SERVICE = join(TEMPLATES_DIR, 'ms-ai-architect-kb-update.service');
const TIMER = join(TEMPLATES_DIR, 'ms-ai-architect-kb-update.timer');
const PS1 = join(TEMPLATES_DIR, 'ms-ai-architect-kb-update.ps1');
const README = join(TEMPLATES_DIR, 'README.md');

function readTpl(p) {
  assert.equal(existsSync(p), true, `template missing: ${p}`);
  return readFileSync(p, 'utf8');
}

test('plist — exists with required keys and placeholders', () => {
  const content = readTpl(PLIST);
  assert.match(content, /<key>Label<\/key>/);
  assert.match(content, /<key>StartCalendarInterval<\/key>/);
  assert.match(content, /<key>ProgramArguments<\/key>/);
  assert.match(content, /<key>StandardOutPath<\/key>/);
  assert.match(content, /<key>StandardErrorPath<\/key>/);
  assert.match(content, /<key>EnvironmentVariables<\/key>/);
  assert.match(content, /<key>RunAtLoad<\/key>\s*<false\/>/);
  assert.match(content, /\{\{NODE_BIN\}\}/);
  assert.match(content, /\{\{PLUGIN_ROOT\}\}/);
  assert.match(content, /\{\{LOG_FILE\}\}/);
  assert.match(content, /\{\{SCHEDULE_HOUR\}\}/);
  assert.match(content, /\{\{SCHEDULE_MINUTE\}\}/);
  assert.match(content, /\{\{SCHEDULE_DAY_OF_WEEK\}\}/);
});

test('systemd .timer — exists with OnCalendar and Persistent', () => {
  const content = readTpl(TIMER);
  assert.match(content, /\[Unit\]/);
  assert.match(content, /\[Timer\]/);
  assert.match(content, /\[Install\]/);
  assert.match(content, /OnCalendar=Wed/);
  assert.match(content, /Persistent=true/);
  assert.match(content, /WantedBy=timers\.target/);
});

test('systemd .service — exists with [Unit], [Service] and ExecStart', () => {
  const content = readTpl(SERVICE);
  assert.match(content, /\[Unit\]/);
  assert.match(content, /\[Service\]/);
  assert.match(content, /ExecStart=/);
  assert.match(content, /\{\{NODE_BIN\}\}/);
  assert.match(content, /\{\{PLUGIN_ROOT\}\}/);
});

test('PowerShell ps1 — exists with Register-ScheduledTask and InteractiveToken', () => {
  const content = readTpl(PS1);
  assert.match(content, /Register-ScheduledTask/);
  assert.match(content, /InteractiveToken/);
  assert.match(content, /New-ScheduledTaskTrigger/);
  assert.match(content, /-Weekly/);
  assert.match(content, /-DaysOfWeek\s+Wednesday/);
  assert.match(content, /\{\{NODE_BIN\}\}/);
  assert.match(content, /\{\{PLUGIN_ROOT\}\}/);
});

test('README — exists and references each template by filename', () => {
  const content = readTpl(README);
  assert.match(content, /com\.fromaitochitta\.ms-ai-architect\.kb-update\.plist/);
  assert.match(content, /ms-ai-architect-kb-update\.service/);
  assert.match(content, /ms-ai-architect-kb-update\.timer/);
  assert.match(content, /ms-ai-architect-kb-update\.ps1/);
});

test('plist + service + ps1 reference NODE_BIN and PLUGIN_ROOT', () => {
  // The .timer is a pure trigger — it activates the .service, which is
  // the only systemd unit that needs to know the binary + plugin root.
  // launchd and Windows put the command directly in the trigger spec, so
  // they need both placeholders themselves.
  for (const tpl of [PLIST, SERVICE, PS1]) {
    const content = readFileSync(tpl, 'utf8');
    assert.match(content, /\{\{NODE_BIN\}\}/, `${tpl} missing NODE_BIN placeholder`);
    assert.match(content, /\{\{PLUGIN_ROOT\}\}/, `${tpl} missing PLUGIN_ROOT placeholder`);
  }
});

test('.timer is placeholder-free literal (Wed 04:23 hardcoded per plan)', () => {
  const content = readFileSync(TIMER, 'utf8');
  assert.match(content, /OnCalendar=Wed \*-\*-\* 04:23:00/);
  assert.doesNotMatch(content, /\{\{[A-Z_]+\}\}/);
});