ci: pre commit semantic commit msg check (#659)

README.md

@@ -2,6 +2,16 @@
 
 This repository contains private packages & plugins that are used by the company's products built in Flutter.
 
+### <span style="color:green">GIT HOOK</span>
+
+<span style="color:orange">Please run the below command to have the git hook installed.</span></br>
+<span style="color:orange">This Hook will check for Semantic versioning commit convention</span></br>
+
+```BASH
+curl --fail -o $HOME/.git/hooks/commit-msg https://raw.githubusercontent.com/regentmarkets/flutter-deriv-packages/master/githooks/commit-msg \
+  && chmod +x $HOME/.git/hooks/commit-msg
+```
+
 ## Using the packages
 
 Each package has been released as git tag with convention as **packageName-vVersionNumber**`(Example: deriv_auth-v6.7.7)`. To use the package, add the following to your pubspec.yaml file:

githooks/commit-msg

@@ -0,0 +1,28 @@
+#!/bin/sh
+
+if [ -z "$1" ]; then
+	echo "Missing argument (commit message). Did you try to run this manually?"
+	exit 1
+fi
+
+commitTitle="$(cat $1 | head -n1)"
+
+# ignore merge requests
+if echo "$commitTitle" | grep -qE "Merge branch"; then
+	echo "Commit hook: ignoring branch merge"
+	exit 0
+fi
+# check semantic versioning scheme
+if ! echo "$commitTitle" | grep -qE '^(feat|fix|docs|style|refactor|perf|test|chore|build|ci|revert)(\([a-z0-9\s\-\_\,]+\))?!?:\s\w'; then
+	echo "Your commit message did not follow semantic versioning: $commitTitle"
+	echo ""
+	echo "Format:   <type>(<optional-scope>): <subject>"
+	echo "Example:  feat(deriv-auth): single entry"
+	echo ""
+	echo "Valid types: build|chore|ci|docs|feat|fix|perf|refactor|revert|style|test"
+	echo ""
+	echo "Please see"
+	echo "- https://github.com/regentmarkets/flutter-deriv-packages/blob/master/.github/GIT_RULES.md"
+	echo "- https://www.conventionalcommits.org/en/v1.0.0/#summary"
+	exit 1
+fi