var fs = require('fs')
var resolve = require('path').resolve

var osenv = require('osenv')
var mkdirp = require('mkdirp')
var rimraf = require('rimraf')
var test = require('tap').test

var common = require('../common-tap.js')

var pkg = resolve(__dirname, 'install-man')
var target = resolve(__dirname, 'install-man-target')

var EXEC_OPTS = {
  cwd: target
}

var json = {
  name: 'install-man',
  version: '1.2.3',
  man: [ './install-man.1' ]
}

test('setup', function (t) {
  setup()
  t.pass('setup ran')
  t.end()
})

test('install man page', function (t) {
  common.npm(
    [
      'install',
      '--prefix', target,
      '--global',
      pkg
    ],
    EXEC_OPTS,
    function (err, code, stdout, stderr) {
      t.ifError(err, 'npm command ran from test')
      t.equals(code, 0, 'install exited with success (0)')
      t.ok(stdout, 'output indicating success')
      t.ok(
        fs.existsSync(resolve(target, 'share', 'man', 'man1', 'install-man.1')),
        'man page link was created'
      )

      t.end()
    }
  )
})

test('clean', function (t) {
  cleanup()
  t.pass('cleaned up')
  t.end()
})

function setup () {
  cleanup()
  mkdirp.sync(pkg)
  // make sure it installs locally
  mkdirp.sync(resolve(target, 'node_modules'))
  fs.writeFileSync(
    resolve(pkg, 'package.json'),
    JSON.stringify(json, null, 2) + '\n'
  )
  fs.writeFileSync(resolve(pkg, 'install-man.1'), 'THIS IS A MANPAGE\n')
}

function cleanup () {
  process.chdir(osenv.tmpdir())
  rimraf.sync(pkg)
  rimraf.sync(target)
}
