var common = require("../common-tap.js")
var test = require("tap").test
var npm = require("../../")
var osenv = require("osenv")
var path = require("path")
var fs = require("fs")
var rimraf = require("rimraf")
var mkdirp = require("mkdirp")
var which = require("which")
var spawn = require("child_process").spawn

var pkg = path.resolve(__dirname, "version-no-tags")
var cache = path.resolve(pkg, "cache")

test("npm version <semver> without git tag", function (t) {
  setup()
  npm.load({ cache: cache, registry: common.registry}, function () {
    which("git", function (err, git) {
      t.ifError(err, "git found on system")
      function tagExists(tag, _cb) {
        var child1 = spawn(git, ["tag", "-l", tag])
        var out = ""
        child1.stdout.on("data", function (d) {
          out += d.toString()
        })
        child1.on("exit", function () {
          return _cb(null, Boolean(~out.indexOf(tag)))
        })
      }

      var child2 = spawn(git, ["init"])
      child2.stdout.pipe(process.stdout)
      child2.on("exit", function () {
        npm.config.set("git-tag-version", false)
        npm.commands.version(["patch"], function (err) {
          if (err) return t.fail("Error perform version patch")
          var p = path.resolve(pkg, "package")
          var testPkg = require(p)
          if (testPkg.version !== "0.0.1") t.fail(testPkg.version+" !== \"0.0.1\"")
          t.equal("0.0.1", testPkg.version)
          tagExists("v0.0.1", function (err, exists) {
            t.ifError(err, "tag found to exist")
            t.equal(exists, false, "git tag DOES exist")
            t.pass("git tag does not exist")
            t.end()
          })
        })
      })
    })
  })
})

test("cleanup", function (t) {
  // windows fix for locked files
  process.chdir(osenv.tmpdir())

  rimraf.sync(pkg)
  t.end()
})

function setup() {
  mkdirp.sync(pkg)
  mkdirp.sync(cache)
  fs.writeFileSync(path.resolve(pkg, "package.json"), JSON.stringify({
    author: "Evan Lucas",
    name: "version-no-tags-test",
    version: "0.0.0",
    description: "Test for git-tag-version flag"
  }), "utf8")
  process.chdir(pkg)
}