/**
 * Static getconf entries for POSIX-ish shared memory / IPC hints.
 */
import { readFile } from 'node:fs/promises'
import path from 'node:path'
import { fileURLToPath } from 'node:url'
import test from 'brittle'

const __dirname = path.dirname(fileURLToPath(import.meta.url))

const AsyncFunction = Object.getPrototypeOf(async function () {}).constructor

async function loadBin(name) {
  const runtime = await readFile(
    path.join(__dirname, '../lib/runtime.js'),
    'utf8'
  )
  const body = await readFile(
    path.join(__dirname, `../src/${name}.js`),
    'utf8'
  )
  return new AsyncFunction(
    'ctx',
    'argv',
    `${runtime}\n${body}\nif (typeof run === 'function') return await run(ctx, argv)\n`
  )
}

test('getconf _POSIX_SHARED_MEMORY_OBJECTS is 1', async (t) => {
  const run = await loadBin('getconf')
  const lines = []
  const ctx = {
    console: { log: (m) => lines.push(String(m)) },
    exitCode: 0
  }
  await run(ctx, ['getconf', '_POSIX_SHARED_MEMORY_OBJECTS'])
  t.is(ctx.exitCode, 0)
  t.is(lines[0], '1')
})

test('getconf BARE_OS_GUEST_SENSITIVE_BARE_DENY catalog entry', async (t) => {
  const run = await loadBin('getconf')
  const lines = []
  const ctx = {
    vfs: { env: {} },
    console: {
      log(s) {
        lines.push(String(s))
      },
      error() {}
    },
    exitCode: 0,
    b4a: await import('b4a')
  }
  await run(ctx, ['getconf', 'BARE_OS_GUEST_SENSITIVE_BARE_DENY'])
  t.is(lines.join('\n').trim(), '1')
})

test('getconf _SC_PAGESIZE static table', async (t) => {
  const run = await loadBin('getconf')
  const lines = []
  const ctx = {
    console: { log: (m) => lines.push(String(m)) },
    exitCode: 0
  }
  await run(ctx, ['getconf', '_SC_PAGESIZE'])
  t.is(ctx.exitCode, 0)
  t.is(lines[0], '4096')
})