version-bump.yml

name: Auto Version Bump

on:
  pull_request:
    types:
      - closed
    branches:
      - main

jobs:
  bump-version:
    runs-on: ubuntu-latest
    permissions:
      contents: write

    steps:
      - name: Check if PR was merged
        id: check
        run: |
          if [ "${{ github.event.pull_request.merged }}" = "true" ]; then
            echo "merged=true" >> "$GITHUB_OUTPUT"
          else
            echo "merged=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Checkout main branch
        if: steps.check.outputs.merged == 'true'
        uses: actions/checkout@v4
        with:
          ref: main
          token: ${{ secrets.GITHUB_TOKEN }}

      - name: Get current version
        if: steps.check.outputs.merged == 'true'
        id: current_version
        run: |
          LINE=$(grep "^version:" pubspec.yaml | sed 's/^version:[[:space:]]*//')
          # Drop +build, then any -prerelease (e.g. 0.4.11-b → 0.4.11).
          CORE=$(echo "$LINE" | sed 's/+.*//; s/-.*//')
          if [[ "$LINE" == *'+'* ]]; then
            BUILD="${LINE##*+}"
          else
            BUILD=""
          fi
          # Guard against non-numeric build leftovers.
          if ! [[ "$BUILD" =~ ^[0-9]+$ ]]; then
            BUILD=""
          fi
          echo "current_version=$CORE" >> "$GITHUB_OUTPUT"
          echo "current_build=$BUILD" >> "$GITHUB_OUTPUT"

      - name: Bump patch version
        if: steps.check.outputs.merged == 'true'
        id: bump
        run: |
          CURRENT_VERSION="${{ steps.current_version.outputs.current_version }}"
          CURRENT_BUILD="${{ steps.current_version.outputs.current_build }}"
          MAJOR=$(echo "$CURRENT_VERSION" | cut -d. -f1)
          MINOR=$(echo "$CURRENT_VERSION" | cut -d. -f2)
          PATCH=$(echo "$CURRENT_VERSION" | cut -d. -f3)
          if ! [[ "$MAJOR$MINOR$PATCH" =~ ^[0-9]+$ ]]; then
            echo "Invalid core version: $CURRENT_VERSION" >&2
            exit 1
          fi
          NEW_PATCH=$((PATCH + 1))
          NEW_VERSION="$MAJOR.$MINOR.$NEW_PATCH"
          if [ -z "$CURRENT_BUILD" ]; then
            NEW_BUILD=1
          else
            NEW_BUILD=$((CURRENT_BUILD + 1))
          fi
          echo "new_version=$NEW_VERSION" >> "$GITHUB_OUTPUT"
          echo "new_build=$NEW_BUILD" >> "$GITHUB_OUTPUT"

      - name: Update pubspec.yaml
        if: steps.check.outputs.merged == 'true'
        run: |
          NEW_VERSION="${{ steps.bump.outputs.new_version }}"
          NEW_BUILD="${{ steps.bump.outputs.new_build }}"
          sed -i "s/^version: .*/version: ${NEW_VERSION}+${NEW_BUILD}/" pubspec.yaml
          grep "^version:" pubspec.yaml

      - name: Sync AUR PKGBUILD pkgver with pubspec
        if: steps.check.outputs.merged == 'true'
        run: |
          NEW_VERSION="${{ steps.bump.outputs.new_version }}"
          sed -i "s/^pkgver=.*/pkgver=${NEW_VERSION}/" packaging/linux/aur/PKGBUILD
          sed -i "s/^pkgrel=.*/pkgrel=1/" packaging/linux/aur/PKGBUILD
          sed -i "s/^sha256sums=.*/sha256sums=('SKIP' 'SKIP' 'SKIP')/" packaging/linux/aur/PKGBUILD
          grep ^pkgver packaging/linux/aur/PKGBUILD

      - name: Commit version bump
        if: steps.check.outputs.merged == 'true'
        run: |
          git config --local user.email "action@github.com"
          git config --local user.name "GitHub Action"
          git add pubspec.yaml packaging/linux/aur/PKGBUILD
          git commit -m "Bump version to ${{ steps.bump.outputs.new_version }}+${{ steps.bump.outputs.new_build }}"
          git push origin main