From 594b9b0d1e3fe773a14b9230f92f5a40ede5f403 Mon Sep 17 00:00:00 2001
From: ethanrubio <ethanrubio@gmail.com>
Date: Wed, 24 May 2017 10:07:25 -0700
Subject: [PATCH] Add CircleCI

---
 ci-services/circleci.js | 33 +++++++++++++++++++++++++++++++++
 ci-services/tests.js    |  3 ++-
 2 files changed, 35 insertions(+), 1 deletion(-)
 create mode 100644 ci-services/circleci.js

diff --git a/ci-services/circleci.js b/ci-services/circleci.js
new file mode 100644
index 00000000..a8918334
--- /dev/null
+++ b/ci-services/circleci.js
@@ -0,0 +1,33 @@
+const env = process.env
+const _ = require("lodash")
+const exec = require("child_process").execSync
+
+function getNumberOfCommitsOnBranch() {
+  const grepAgument = `refs/heads/${env.CIRCLE_BRANCH}`
+  const notArgument = `$(git for-each-ref --format="%(refname)" refs/heads/ | grep -v ${grepAgument})`
+  return _.toNumber(
+    exec(
+      `git log ${env.CIRCLE_BRANCH} --oneline --not ${notArgument} | wc -l`
+    ).toString()
+  )
+}
+
+function getCommitMessage() {
+  return exec('git log --format="%s" -n1 $CIRCLE_SHA1').toString()
+}
+
+module.exports = {
+  // The GitHub repo slug
+  repoSlug: `${env.CIRCLE_PROJECT_USERNAME}/${env.CIRCLE_PROJECT_REPONAME}`,
+  // The name of the current branch
+  branchName: env.CIRCLE_BRANCH,
+  // The commit message of the last commit on the current branch
+  commitMessage: getCommitMessage(),
+  // Is this the first push on this branch
+  // i.e. the Greenkeeper commit
+  firstPush: getNumberOfCommitsOnBranch() === 1,
+  // Is this a regular build
+  correctBuild: _.isEmpty(env.CI_PULL_REQUEST),
+  // Should the lockfile be uploaded from this build
+  uploadBuild: env.CIRCLE_NODE_INDEX === "0"
+}
diff --git a/ci-services/tests.js b/ci-services/tests.js
index 9c99c674..99920892 100644
--- a/ci-services/tests.js
+++ b/ci-services/tests.js
@@ -1,5 +1,6 @@
 const env = process.env
 
 module.exports = {
-  travis: () => env.TRAVIS === 'true'
+  travis: () => env.TRAVIS === 'true',
+  circleci: () => env.CIRCLECI === 'true'
 }