feat(ci): Automatically bump brew formula in ci

This adds a script to ci to automatically bump the brew formula to the newest version when merged to master.

.circleci/config.yml

@@ -59,6 +59,12 @@ jobs:
       - run: npm install
       - run: npm run build
       - run: npm run semantic-release
+  bump-brew-formula:
+    macos:
+      xcode: "9.0"
+    steps:
+      - checkout
+      - run: npm run bump-brew-formula
 workflows:
   version: 2
   build_and_test:
@@ -73,3 +79,6 @@ workflows:
             - integration
             - linux
             - osx
+      - bump-brew-formula:
+          requires:
+            - release

package.json

@@ -16,6 +16,7 @@
     "build": "npm run clean && babel lib -d dist",
     "build:standalone": "npm run build && pkg --targets node8-macos-x64,node8-linux-x64,node8-win-x64 --out-dir build .",
     "build:package": "npm run build:standalone && script/package",
+    "bump-brew-formula": "script/bump-brew-formula.sh",
     "clean": "rimraf dist",
     "dev": "nodemon --exec npm run build -w lib",
     "lint": "eslint bin lib test",

script/bump-brew-formula.sh

@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+#
+# Script to automatically create a pr in the Homebrew/homebrew-core repo to update the contentful-cli formula
+# (works only for macOS, with HOMEBREW_GITHUB_API_TOKEN set and a valid ssh key)
+
+command -v brew >/dev/null 2>&1 || /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
+brew update
+brew install coreutils
+
+DRY_RUN=" --dry-run"
+if [ "${CIRCLE_BRANCH}" == "master" ]; then DRY_RUN=""; fi
+
+if [ ! $(git config --global user.email) ]; then git config --global user.email "[email protected]"; fi
+if [ ! $(git config --global user.name) ]; then git config --global user.name "contentful"; fi
+
+package="contentful-cli"
+version=$(npm show ${package} version)
+url="https://registry.npmjs.org/${package}/-/${package}-${version}.tgz"
+sha256=$(curl -s ${url} | gsha256sum | awk '{ print $1 }')
+
+# send stderr to variable, pass stdout through
+{
+  err=$(
+    brew bump-formula-pr --strict ${package} --url=${url} --sha256=${sha256} --no-browse --message="This PR was automatically created via a script. Contact @contentful with any questions." ${DRY_RUN} 2>&1 >&3 3>&-
+  )
+} 3>&1
+
+echo "$err"
+
+function has_substring() {
+  [[ "$1" =~ "$2" ]]
+}
+
+if has_substring "$err" "Error:"; then
+  # fail soft for CI (if version not bumped, pr already opened or running on feature branch)
+  if has_substring "$err" "You probably need to bump this formula manually"; then
+    echo "Soft Fail${DRY_RUN}: Potentially manual PR required"
+    exit 0
+  fi
+  if has_substring "$err" "Duplicate PRs should not be opened."; then
+    echo "Soft Fail${DRY_RUN}: Duplicate PR found"
+    exit 0
+  fi
+  echo "Hard Fail${DRY_RUN}:"
+  exit 1
+fi