From 8f00caaa3ea215637529515d85c1216c5b3e1530 Mon Sep 17 00:00:00 2001
From: Henrique Dias <hacdias@gmail.com>
Date: Fri, 12 Jan 2018 15:30:15 +0000
Subject: [PATCH] feat: commit lint

---
 .travis.yml        |  1 +
 README.md          |  1 +
 cmds/commitlint.js | 55 ++++++++++++++++++++++++++++++++++++++++++++++
 package.json       |  7 +++++-
 4 files changed, 63 insertions(+), 1 deletion(-)
 create mode 100644 cmds/commitlint.js

diff --git a/.travis.yml b/.travis.yml
index bdfc959d7..95641b74b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,6 +13,7 @@ before_script:
 script:
   - yarn lint
   - yarn test
+  - yarn commitlint
   - yarn coverage -- -u -p codecov coveralls
 
 addons:
diff --git a/README.md b/README.md
index f817d9838..937eaadb9 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,7 @@ Your `package.json` should have the following entries.
 "main": "src/index.js",
 "scripts": {
   "lint": "aegir lint",
+  "commitlint": "aegir commitlint",
   "release": "aegir release",
   "build": "aegir build",
   "test": "aegir test",
diff --git a/cmds/commitlint.js b/cmds/commitlint.js
new file mode 100644
index 000000000..5fadef8e5
--- /dev/null
+++ b/cmds/commitlint.js
@@ -0,0 +1,55 @@
+'use strict'
+
+const lint = require('@commitlint/lint')
+const read = require('@commitlint/read')
+const load = require('@commitlint/load')
+const util = require('util')
+
+function exec (command) {
+  return new Promise((resolve, reject) => {
+    require('child_process').exec(command, (err, stdout, stderr) => {
+      if (err) {
+        return reject(err)
+      } else {
+        return resolve(stdout)
+      }
+    })
+  })
+}
+
+function runLinter () {
+  return exec('git rev-parse --abbrev-ref HEAD')
+    .then((branch) => exec(`git rev-list --left-right --count master...${branch}`))
+    .then((count) => count.split(/\s+/)[1])
+    .then((commits) => read({to: 'HEAD', from: `HEAD~${commits}`}))
+    .then((commits) => Promise.all([commits, load({ extends: ['@commitlint/config-conventional'] })]))
+    .then(([commits, opts]) => Promise.all(commits.map((commit) => lint(
+      commit,
+      opts.rules,
+      opts.parserPreset ? {parserOpts: opts.parserPreset.parserOpts} : {}
+    ))))
+    .then(results => results.filter((r) => !r.valid))
+    .then(invalid => {
+      if (invalid.length) {
+        console.log(util.inspect(invalid, false, null))
+        return 1
+      } else {
+        return 0
+      }
+    })
+    .then(process.exit)
+    .catch((error) => {
+      console.log(error)
+      process.exit(1)
+    })
+}
+
+exec('git rev-parse --verify master')
+  .then(runLinter)
+  .catch(() => exec('git config remote.origin.fetch +refs/heads/*:refs/remotes/origin/*'))
+  .then(() => exec('git fetch'))
+  .then(lint)
+  .catch((error) => {
+    console.log(error)
+    process.exit(1)
+  })
diff --git a/package.json b/package.json
index c5a364b02..89aa34417 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,8 @@
     "watch": "cross-env AEGIR_TEST=hello node cli.js test -t node --watch",
     "release": "npm run test && node cli.js release --no-build --no-test",
     "release-minor": "npm run test && node cli.js release --no-build --no-test --type minor",
-    "release-major": "npm run test && node cli.js release --no-build --no-test --type major"
+    "release-major": "npm run test && node cli.js release --no-build --no-test --type major",
+    "commitlint": "node cli.js commitlint"
   },
   "keywords": [
     "webpack",
@@ -29,6 +30,10 @@
   "author": "Friedel Ziegelmayer <dignifiedquire@gmail.com>",
   "license": "MIT",
   "dependencies": {
+    "@commitlint/config-conventional": "^6.1.2",
+    "@commitlint/lint": "^6.1.2",
+    "@commitlint/load": "^6.1.2",
+    "@commitlint/read": "^6.1.2",
     "async": "^2.6.0",
     "browserify-zlib": "^0.2.0",
     "chalk": "^2.3.0",