MoreTore/.github/workflows/update_pr_branch.yaml

name: "Update MAKE-PRS-HERE"
run-name: "Update MAKE-PRS-HERE"

on:
  push:
    branches:
      - FrogPilot-Testing

permissions:
  contents: write

env:
  SOURCE_BRANCH: FrogPilot-Testing
  TARGET_BRANCH: ${{ vars.BRANCH_PR_TARGET || 'MAKE-PRS-HERE' }}
  TZ: America/Phoenix

concurrency:
  group: update-make-prs-here

jobs:
  update_branch:
    name: "Sync PR branch from the latest non-compiled source commit"
    runs-on: ubuntu-latest
    timeout-minutes: 15
    defaults:
      run:
        shell: bash
    steps:
      - name: "Checkout source branch"
        uses: actions/checkout@v6
        with:
          fetch-depth: 0
          ref: ${{ env.SOURCE_BRANCH }}

      - name: "Configure git identity"
        run: |
          if [[ -z "${{ vars.GIT_NAME }}" || -z "${{ vars.GIT_EMAIL }}" ]]; then
            echo "Repository variables GIT_NAME and GIT_EMAIL must be set."
            exit 1
          fi

          git config user.name "${{ vars.GIT_NAME }}"
          git config user.email "${{ vars.GIT_EMAIL }}"

      - id: source
        name: "Resolve source commit"
        run: |
          set -u

          source_commit=HEAD
          while [[ "$(git log -1 --format=%s "$source_commit")" == "Compile FrogPilot" ]]; do
            if ! git rev-parse "${source_commit}^" >/dev/null 2>&1; then
              echo "Unable to resolve a non-compiled source commit."
              exit 1
            fi

            source_commit="${source_commit}^"
          done

          echo "source_commit=$(git rev-parse "$source_commit")" >> "$GITHUB_OUTPUT"

      - name: "Checkout target branch"
        run: |
          git fetch origin "$TARGET_BRANCH"
          git switch -C "$TARGET_BRANCH" "origin/$TARGET_BRANCH"

      - name: "Sync files from source to target"
        run: |
          git rm -r --ignore-unmatch .
          git clean -ffdx

          git checkout "${{ steps.source.outputs.source_commit }}" -- .

          rm -f ".github/update_date"
          git add --all

      - name: "Commit and push branch update"
        run: |
          set -u

          if git diff --cached --quiet; then
            echo "Working tree is clean. No changes to commit."
            exit 0
          fi

          day=$(TZ="$TZ" date +%-d)
          case "$day" in
            1|21|31) suffix="st" ;;
            2|22) suffix="nd" ;;
            3|23) suffix="rd" ;;
            *)      suffix="th" ;;
          esac

          month=$(TZ="$TZ" date +%B)
          year=$(TZ="$TZ" date +%Y)
          commit_message="${month} ${day}${suffix}, ${year} Update"

          if [[ "$(git log -1 --pretty=%s)" == "$commit_message" ]]; then
            git commit --amend --no-edit
          else
            git commit -m "$commit_message"
          fi

          git push --force-with-lease origin "HEAD:refs/heads/$TARGET_BRANCH"