Implement release scripts

Makefile

@@ -8,6 +8,7 @@ pip=`which pip`
 pc=`which pip-compile`
 ps=`which pip-sync`
 openssl=`which openssl`
+type=patch
 
 ############################################################################
 # container targets
@@ -74,6 +75,9 @@ shell:
 setup-venv:
 	virtualenv --python=/usr/bin/python3.9 venv
 
+release:
+	scripts/release.sh $(type)
+
 ############################################################################
 # utility targets
 ############################################################################

scripts/helpers.sh

@@ -0,0 +1,148 @@
+#!/usr/bin/env bash
+# helpers used across bash scripts
+
+# Check before starting the release process
+# $1: release type: major | minor | patch
+check_are_you_serious() {
+    local release_type=${1}
+
+    echo "Starting the Griffon ${release_type} release process."
+    read -erp "Do you want to continue? [y/N]: " answer
+    echo
+    if [[ "${answer}" != "y" ]]; then
+        exit 1
+    fi
+}
+
+# Check if current branch is main
+check_main_branch() {
+    current_branch=$( git branch | awk '/^* / {FS = " "; print $2}' )
+    if [[ "${current_branch}" != "main" ]]; then
+        echo "ERROR: Your branch is not 'main'. A new release has to be done from main."
+        echo
+        echo "Please switch the branch to main and start this script again."
+        echo
+        exit 1
+    fi
+}
+
+# Increments the part of the string
+# $1: current version
+# $2: release type: major | minor | patch
+increment_version() {
+    local current_version=${1}
+    local release_type=${2}
+    case ${release_type} in
+        "major")
+            version_part=0
+            ;;
+        "minor")
+            version_part=1
+            ;;
+        "patch")
+            version_part=2
+            ;;
+        *)
+            echo "Unknown release type $1, allowed is major/minor/patch"
+            exit 1
+            ;;
+    esac
+
+    local version=($(echo "${current_version}" | tr "." '\n'))
+    version[${version_part}]=$((version[${version_part}]+1))
+
+    for (( part=${version_part} + 1; part<=2; part++ )) do
+        version[${part}]=0
+    done
+
+    echo $(local IFS="." ; echo "${version[*]}")
+}
+
+# Update the version in files
+# $1: new version
+update_version() {
+    local version=${1}
+
+    echo
+
+    echo "Replacing __version__ in griffon __init__.py to ${version}"
+    sed -i 's/__version__ = "[0-9]*\.[0-9]*\.[0-9]*"/__version__ = "'${version}'"/g' griffon/__init__.py
+
+    echo "Updating the CHANGELOG.md to ${version}"
+    sed -i 's/^## Unreleased.*/## Unreleased\n\n## ['"${version}"'] - '$(date '+%Y-%m-%d')'/' CHANGELOG.md
+
+    echo
+}
+
+# Create new git branch
+# $1: branch name
+create_new_branch() {
+    local branch_name=${1}
+
+    echo "New branch name is ${branch_name}"
+
+
+    echo "Creating new branch ${branch_name}"
+    echo
+
+    git checkout -b ${branch_name}
+}
+
+# Push branch
+# $1: branch name
+push_branch() {
+    local branch_name=${1}
+
+    echo "Pushing release branch"
+    read -erp "Push branch ${branch_name} to Git server? [y/N]: " answer
+    if [[ "$answer" != "y" ]]; then
+        exit 1
+    fi
+
+    git push --set-upstream origin ${branch_name}
+    echo
+}
+
+# Commit changed files
+# $1: version
+pull_request() {
+    local version="${1}"
+
+    base_link="https://github.com/RedHatProductSecurity/griffon/pull/new"
+    url_with_args="${base_link}/v${version}?pull_request%5Btitle%5D=preparation%20of%20${version}%20release"
+    echo "Trying to open the following link in browser to create a pull request into the master branch:"
+    echo
+    echo "    ${url_with_args}"
+    echo
+    xdg-open "${url_with_args}" || (
+        echo "Failed to open URL to create pull request automatically."
+        echo "Please open URL manually in your browser"
+        echo
+    )
+}
+
+# Review changes
+review() {
+    echo "Review of changes"
+    echo
+    echo "Please run command \"git diff\" in another terminal"
+    echo "to check if versions were updated properly."
+    read -erp "Are changes OK? [y/N]: " answer
+
+    if [[ "${answer}" != "y" ]]; then
+        exit 1
+    fi
+    echo
+}
+
+# Commit changed files
+# $1: version
+commit_version_changes() {
+    local version=${1}
+
+    echo "Committing version changes"
+
+    git add griffon/__init__.py CHANGELOG.md
+    git commit -m "Preparation of ${version} release"
+    echo
+}

scripts/release.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+# perform a release
+
+source scripts/helpers.sh
+
+# Get number of the new Griffon version
+# $1: release type (major|minor|patch)
+get_new_version() {
+    local release_type=${1}
+
+    # Parse current version from griffon __init__.py
+    current_version=$(cat griffon/__init__.py | grep -Po '(?<=__version__ = \")\d+\.\d+\.\d+')
+    new_version=$(increment_version ${current_version} ${release_type})
+}
+
+# Main section
+check_are_you_serious ${1}
+check_main_branch
+get_new_version ${1}
+
+create_new_branch "v${new_version}"
+update_version ${new_version}
+review
+commit_version_changes ${new_version}
+
+push_branch "v${new_version}"
+pull_request ${new_version}
+
+exit 0