Fix detached (#8)

* Fixing it so that detached head displays the hash instead

* fixing ternary operator

* formatting

* destroy last semicolon

* attach head, please use hash

* get test to reflect the hash changes

* changing var to let

* Changing method of retrieving branch name to git name-rev HEAD --name-only

* getting test to reflect envid changes

* removing trailing space

* returning directly

index.js

@@ -58,18 +58,7 @@ function loadConfig () {
 
 function getEnvIdFromBranch () {
   try {
-    let branch = sh.exec('git status', { silent: true }).stdout
-
-    if (!branch || _.includes(branch, 'fatal:')) {
-      return
-    }
-
-    branch = branch.split('\n')[0]
-    branch = branch.replace(/^#?\s?On branch ((\w|-|_|\/|.)+)/, '$1')
-
-    if (config.branchRegex) {
-      branch = branch.replace(new RegExp(_.trim(config.branchRegex)), '$1')
-    }
+    let branch = sh.exec('git name-rev HEAD --name-only').stdout
 
     return _.trimEnd(_.truncate(branch, {
       length: 13,

test/_env.js

@@ -4,15 +4,10 @@ const _ = require('lodash')
 const sh = require('shelljs')
 
 module.exports = function (regex) {
-  var env = sh.exec('git status', { silent: true }).stdout
-  env = env.split('\n')[0]
-  env = env.replace(/^#?\s?On branch ([\w-_/.]+)/, '$1')
-  env = regex ? env.replace(/\w(\w+)\w/, '$1') : env
+  var env = sh.exec('git name-rev HEAD --name-only').stdout
 
-  env = env ? _.truncate(env, {
+  return env ? _.truncate(env, {
     length: 13,
     omission: ''
   }) : undefined
-
-  return env
 }