[BRE-30] PR Version labels (#284)

* Add version reusable workflow

* Add PR version to enforce version label

Author: michalchecinski

.github/workflows/_enforce-labels.yml

@@ -0,0 +1,29 @@
+---
+name: Enforce PR labels
+
+on:
+  workflow_call:
+
+jobs:
+  enforce-label:
+    if: ${{ contains(github.event.*.labels.*.name, 'hold') || contains(github.event.*.labels.*.name, 'needs-qa') }}
+    name: Enforce label
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Check for label
+        run: |
+          echo "PRs with the hold or needs-qa labels cannot be merged"
+          echo "### :x: PRs with the hold or needs-qa labels cannot be merged" >> $GITHUB_STEP_SUMMARY
+          exit 1
+
+  enforce-version-label:
+    if: ${{ contains(github.event.*.labels.*.name, 'version') }}
+    name: Enforce version label
+    runs-on: ubuntu-22.04
+
+    steps:
+      - name: Check for label
+        run: |
+          echo "PR without the version label cannot be merged."
+          echo "### :x: PR without the version label cannot be merged" >> $GITHUB_STEP_SUMMARY
+          exit 1

.github/workflows/_version.yml

@@ -0,0 +1,104 @@
+---
+name: _version
+run-name: Calculate Version
+
+on:
+  workflow_call:
+    inputs:
+      is-release:
+        type: boolean
+        required: true
+    outputs:
+      version:
+        description: "version to be built"
+        value: ${{ jobs.version.outputs.version }}
+
+jobs:
+  version:
+    name: Calculate Version
+    runs-on: ubuntu-22.04
+    outputs:
+      version: ${{ steps.calculate.outputs.version }}
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab  # v3.5.2
+        with:
+          fetch-depth: 0
+
+      - name: Get PR ID
+        id: pr
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          commit_message=$(
+            curl -s -L \
+              -H "Accept: application/vnd.github+json" \
+              -H "Authorization: Bearer $GH_TOKEN" \
+              -H "X-GitHub-Api-Version: 2022-11-28" \
+              https://api.github.com/repos/${{ github.repository }}/commits/${{ github.sha }} | \
+            jq -r ".commit.message"
+          )
+          ID=$(echo "$commit_message" | head -1 | grep -o "(#.*)" | grep -o "[0-9]*")
+          echo "id=$ID" >> $GITHUB_OUTPUT
+
+      - name: Get version bump type
+        if: ${{ inputs.is-release }}
+        id: bump-type
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          PR_NUMBER: ${{ steps.pr.outputs.id }}
+        run: |
+          version_tag=$(
+            curl -s -L \
+              -H "Accept: application/vnd.github+json" \
+              -H "Authorization: Bearer $GH_TOKEN" \
+              -H "X-GitHub-Api-Version: 2022-11-28" \
+              https://api.github.com/repos/${{ github.repository }}/issues/$PR_NUMBER/labels | \
+            jq -r ".[].name" | grep "version"
+          )
+
+          # Single Version label Enforcement (should go in CI...)
+          if [[ $(echo $version_tag | wc -w) -gt 1 ]]; then
+              echo "[!] multiple version labels found!"
+              exit 1
+          fi
+
+          version_type=$(echo $version_tag | cut -d ":" -f 2)
+          echo "Version Bump Type: $version_type"
+          echo "type=$version_type" >> $GITHUB_OUTPUT
+
+      - name: Calculate next version
+        id: calculate
+        env:
+          VERSION_TYPE: ${{ steps.bump-type.outputs.type }}
+        run: |
+          echo -e "\nCalculating next version..."
+
+          latest_tag_version=$(git tag --sort=committerdate --list | tail -1)
+          latest_version=${latest_tag_version:1}  # remove 'v' from tag version
+
+          if [[ "${{ inputs.is-release }}" == "true" ]]; then
+            latest_major_version=$(echo $latest_version | cut -d "." -f 1)
+            latest_minor_version=$(echo $latest_version | cut -d "." -f 2)
+            latest_patch_version=$(echo $latest_version | cut -d "." -f 3)
+
+            echo "  latest_version:  $latest_version"
+            echo "  latest_major_version: $latest_major_version"
+            echo "  latest_minor_version: $latest_minor_version"
+            echo "  latest_patch_version: $latest_patch_version"
+
+            if [[ "$VERSION_TYPE" == "major" ]]; then
+              next_version="$(($latest_major_version + 1)).0.0"
+            elif [[ "$VERSION_TYPE" == "minor" ]]; then
+              next_version="${latest_major_version}.$(($latest_minor_version + 1)).0"
+            elif [[ "$VERSION_TYPE" == "patch" ]]; then
+              next_version="${latest_major_version}.${latest_minor_version}.$(($latest_patch_version + 1))"
+            else
+              next_version="$latest_version+${{ steps.pr.outputs.id }}"
+            fi
+
+            echo "Next Version: $next_version"
+            echo "version=$next_version" >> $GITHUB_OUTPUT
+          else
+            echo "version=$latest_version+${{ steps.pr.outputs.id }}" >> $GITHUB_OUTPUT
+          fi