ci: Add release workflow

.github/workflows/release-pr.yml

@@ -0,0 +1,126 @@
+name: Bump Version
+on:
+  workflow_dispatch:
+    inputs:
+      type:
+        description: 'release or hotfix'
+        type: choice
+        options:
+          - release
+          - hotfix
+        required: true
+        default: 'release'
+      # NOTE: For a `release` branch, only specify the `major.minor` version. This branch will be persistent across patches,
+      # so any patch number specified in this case will be dropped. For a hotfix, specify the full `major.minor.patch` version
+      version:
+        description: 'Version'
+        required: true
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Git config
+        run: |
+          git config --global user.name "github-actions[bot]"
+          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+
+          git config --global url."https://${{ secrets.REPO_TOKEN }}@github.com/".insteadOf ssh://[email protected]
+          git config --global url."https://${{ secrets.REPO_TOKEN }}@github.com".insteadOf https://github.com
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Install `tq-rs`
+        run: cargo install tq-rs
+
+      # The `release/1.0` branch is always truncated, so that patch version merges still are valid Semver
+      # However, when we make the initial `release/1.0` version bump, we include the full `1.0.0` in `Cargo.toml`
+      # and the release for clarity
+      - name: Set branches
+        run: |
+          BASE_VERSION_SHORT=$(echo "${{ inputs.version }}" | cut -d'.' -f1-2)
+          BASE_VERSION="${BASE_VERSION_SHORT}.0"
+          if [[ "${{ inputs.type }}" == "hotfix" ]]; then
+            VERSION=${{ inputs.version }}
+            BASE_BRANCH="release/$BASE_VERSION_SHORT"
+            PR_BRANCH="${{ inputs.type }}/${{ inputs.version }}"
+            git checkout ${{ env.PR_BRANCH }}
+          else
+            VERSION=$BASE_VERSION
+            BASE_BRANCH="main"
+            PR_BRANCH="release/$BASE_VERSION_SHORT"
+            git checkout -b ${{ env.PR_BRANCH }}
+          fi
+
+          echo "BASE_BRANCH=$BASE_BRANCH" | tee -a $GITHUB_ENV
+          echo "PR_BRANCH=$PR_BRANCH" | tee -a $GITHUB_ENV
+          echo "PR_DESCRIPTION=chore: Release $VERSION" | tee -a $GITHUB_ENV
+          echo "VERSION=$VERSION" | tee -a $GITHUB_ENV
+
+      # Regex from https://semver.org/#is-there-a-suggested-regular-expression-regex-to-check-a-semver-string
+      - name: Validate version
+        run: |
+          echo "Validating version ${{ env.VERSION }}..."
+          D='0|[1-9][0-9]*'
+          PW='[0-9]*[a-zA-Z-][0-9a-zA-Z-]*'
+          MW='[0-9a-zA-Z-]+'
+          if [[ "${{ env.VERSION }}" =~ ^($D)\.($D)\.($D)(-(($D|$PW)(\.($D|$PW))*))?(\+($MW(\.$MW)*))?$ ]]; then
+            echo "Version ${{ env.VERSION }} is valid."
+          else
+            echo "Version is not valid SemVer. Aborting..."
+            exit 1
+          fi
+
+      - name: Update version in Cargo.toml
+        run: |
+          members=$(tq workspace.members -f Cargo.toml | jq -r '.[]')
+
+          bump_version() {
+            cd "$1"
+            OLD_VERSION=$(grep -oP 'version = "\K[^"]+' Cargo.toml)
+            if [[ "${{ env.VERSION }}" > "$OLD_VERSION" ]]; then
+              sed -i "s/version = \"$OLD_VERSION\"/version = \"${{ env.VERSION }}\"/" Cargo.toml
+            else
+              echo "New version is not greater than the current version for $1. Aborting..."
+              exit 1
+            fi
+            cd ${{ github.workspace }}
+          }
+
+          while IFS= read -r path; do
+            if [[ "$path" == *"/*" ]]; then
+              for dir in "${path%/*}"/*; do
+                if [ -d "$dir" ] && [ -f "$dir/Cargo.toml" ]; then
+                  bump_version "$dir"
+                fi
+              done
+            else
+              bump_version "$path"
+            fi
+          done <<< "$members"
+
+      - name: Commit changes
+        run: |
+          git add .
+          git commit -m "${{ env.PR_DESCRIPTION }}"
+          git push origin ${{ env.PR_BRANCH }}
+
+      # Note: Can't use `peter-evans/create-pull-request` because for hotfixes we need to make the PR with an existing branch
+      # The former always creates a new one for single-commit PRs, thus overwriting the actual hotfix
+      - name: Create PR
+        run: |
+          cat << 'EOF' > body.md
+          This is an automated release PR for the patched version of `${{ env.VERSION }}`.
+
+          On merge, this will trigger the [release publish workflow](${{ github.server_url }}/${{ github.repository }}/actions/workflows/tag-release.yml), which will upload a new GitHub release with tag `{{ env.VERSION }}`.
+
+          [Workflow run](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }})
+          EOF
+
+          gh pr create --title "${{ env.PR_DESCRIPTION }}" --body-file ./body.md --head ${{ env.PR_BRANCH }} --base ${{ env.BASE_BRANCH }}
+        env:
+          GH_TOKEN: ${{ github.token }}

.github/workflows/tag-release.yml

@@ -0,0 +1,55 @@
+name: Tag release
+
+on:
+  pull_request:
+    types: [ closed ]
+    branches:
+      - dev
+      - release/*
+
+jobs:
+  # Creates a new tag if a release branch is merged
+  tag-bump:
+    if: |
+      github.event.pull_request.merged == true &&
+      ((startsWith(github.event.pull_request.head.ref, 'release/') && github.event.pull_request.base.ref == 'dev') ||
+      (startsWith(github.event.pull_request.head.ref, 'hotfix/') && startsWith(github.event.pull_request.base.ref, 'release/')))
+    runs-on: ubuntu-latest
+    steps:
+      - name: Git config
+        run: |
+          git config --global user.name "github-actions[bot]"
+          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+
+          git config --global url."https://${{ secrets.REPO_TOKEN }}@github.com/".insteadOf ssh://[email protected]
+          git config --global url."https://${{ secrets.REPO_TOKEN }}@github.com".insteadOf https://github.com
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Get version
+        id: get-version
+        run: |
+          VERSION=$(echo "${{ github.event.pull_request.head.ref }}" | cut -d'/' -f 2)
+          RELEASE_BRANCH="${{ startsWith(github.event.pull_request.head.ref, 'release/') && github.event.pull_request.head.ref || github.event.pull_request.base.ref }}"
+
+          git tag -a $VERSION -m "$VERSION" $RELEASE_BRANCH
+          git push origin $VERSION -f
+          echo "version=$VERSION" | tee -a "$GITHUB_OUTPUT"
+          echo "RELEASE_BRANCH=$RELEASE_BRANCH" | tee -a "$GITHUB_ENV"
+
+      - name: Build Changelog
+        id: github_release
+        uses: mikepenz/release-changelog-builder-action@v4
+        with:
+          toTag: ${{ steps.get-version.outputs.version }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Create Release
+        uses: ncipollo/release-action@v1
+        with:
+          body: ${{ steps.github_release.outputs.changelog }}
+          tag: ${{ steps.get-version.outputs.version }}
+          commit: ${{ env.RELEASE_BRANCH }}
+          allowUpdates: true