var fs = require("fs")

if (process.argv[2] === "write-builtin") {
  var pid = process.argv[3]
  fs.writeFileSync("npmrc", "foo=bar\npid=" + pid + "\n")
  return
}

var rcdata = "foo=bar\npid=" + process.pid + "\n"
var common = require("../common-tap.js")
var path = require("path")
var rimraf = require("rimraf")
var mkdirp = require("mkdirp")
var folder = path.resolve(__dirname, "builtin-config")
var test = require("tap").test
var npm = path.resolve(__dirname, "../..")
var spawn = require("child_process").spawn
var node = process.execPath

test("setup", function (t) {
  t.plan(1)
  rimraf.sync(folder)
  mkdirp.sync(folder + "/first")
  mkdirp.sync(folder + "/second")
  mkdirp.sync(folder + "/cache")
  mkdirp.sync(folder + "/tmp")

  t.pass("finished setup")
  t.end()
})


test("install npm into first folder", function (t) {
  t.plan(1)
  var args = ["install", npm, "-g",
              "--prefix=" + folder + "/first",
              "--ignore-scripts",
              "--cache=" + folder + "/cache",
              "--loglevel=silent",
              "--tmp=" + folder + "/tmp"]
  common.npm(args, {stdio: "inherit"}, function (er, code) {
    if (er) throw er
    t.equal(code, 0)
    t.end()
  })
})

test("write npmrc file", function (t) {
  t.plan(1)
  common.npm(["explore", "npm", "-g",
              "--prefix=" + folder + "/first",
              "--cache=" + folder + "/cache",
              "--tmp=" + folder + "/tmp",
              "--",
              node, __filename, "write-builtin", process.pid
             ],
             {"stdio": "inherit"},
             function (er, code) {
    if (er) throw er
    t.equal(code, 0)
    t.end()
  })
})

test("use first npm to install second npm", function (t) {
  t.plan(3)
  // get the root location
  common.npm([ "root", "-g",
               "--prefix=" + folder + "/first",
               "--cache=" + folder + "/cache",
               "--tmp=" + folder + "/tmp",
             ], {}, function (er, code, so) {
    if (er) throw er
    t.equal(code, 0)
    var root = so.trim()
    t.ok(fs.statSync(root).isDirectory())

    var bin = path.resolve(root, "npm/bin/npm-cli.js")
    spawn( node
         , [ bin
           , "install", npm
           , "-g"
           , "--prefix=" + folder + "/second"
           , "--cache=" + folder + "/cache"
           , "--tmp=" + folder + "/tmp"
           ])
    .on("error", function (er) { throw er })
    .on("close", function (code) {
      t.equal(code, 0, "code is zero")
      t.end()
    })
  })
})

test("verify that the builtin config matches", function (t) {
  t.plan(3)
  common.npm([ "root", "-g",
               "--prefix=" + folder + "/first",
               "--cache=" + folder + "/cache",
               "--tmp=" + folder + "/tmp"
             ], {}, function (er, code, so) {
    if (er) throw er
    t.equal(code, 0)
    var firstRoot = so.trim()
    common.npm([ "root", "-g",
                 "--prefix=" + folder + "/second",
                 "--cache=" + folder + "/cache",
                 "--tmp=" + folder + "/tmp"
               ], {}, function (er, code, so) {
      if (er) throw er
      t.equal(code, 0)
      var secondRoot = so.trim()
      var firstRc = path.resolve(firstRoot, "npm", "npmrc")
      var secondRc = path.resolve(secondRoot, "npm", "npmrc")
      var firstData = fs.readFileSync(firstRc, "utf8")
      var secondData = fs.readFileSync(secondRc, "utf8")
      t.equal(firstData, secondData)
      t.end()
    })
  })
})


test("clean", function (t) {
  rimraf.sync(folder)
  t.end()
})