name: Update MAKE-PRS-HERE

on:
  push:
    branches:
      - FrogPilot-Testing

env:
  GITHUB_TOKEN: ${{ secrets.PERSONAL_ACCESS_TOKEN }}

  SOURCE_BRANCH: FrogPilot-Testing
  TARGET_BRANCH: MAKE-PRS-HERE

jobs:
  update_branch:
    runs-on: ubuntu-latest
    steps:
      - name: Configure Git Identity
        run: |
          git config --global user.name "James"
          git config --global user.email "91348155+FrogAi@users.noreply.github.com"

      - name: Checkout ${{ env.SOURCE_BRANCH }}
        uses: actions/checkout@v3
        with:
          persist-credentials: false
          fetch-depth: 0
          ref: ${{ env.SOURCE_BRANCH }}

      - name: Find "Compile FrogPilot" Commit in ${{ env.SOURCE_BRANCH }}
        id: find_parent
        run: |
          COMMIT=$(git rev-list HEAD -n 1 --grep="Compile FrogPilot")
          [ -z "$COMMIT" ] && echo "Compile commit not found." >&2 && exit 1

          PARENT=$(git rev-list --parents -n 1 "$COMMIT" | awk '{print $2}')
          [ -z "$PARENT" ] && echo "Parent commit not found." >&2 && exit 1

          echo "parent_commit=$PARENT" >> "$GITHUB_OUTPUT"
          echo "compile_commit=$COMMIT" >> "$GITHUB_OUTPUT"

      - name: Fetch and Checkout ${{ env.TARGET_BRANCH }}
        run: |
          git fetch origin "${{ env.TARGET_BRANCH }}"
          git checkout "${{ env.TARGET_BRANCH }}"

      - name: Clean ${{ env.TARGET_BRANCH }} and Apply Updates from ${{ env.SOURCE_BRANCH }}
        run: |
          git rm -r --ignore-unmatch .
          git clean -fdx
          git checkout "${{ steps.find_parent.outputs.parent_commit }}" -- .

          COMPILE_COMMIT="${{ steps.find_parent.outputs.compile_commit }}"
          SOURCE_HEAD=$(git rev-parse "origin/${{ env.SOURCE_BRANCH }}")

          [ "$COMPILE_COMMIT" != "$SOURCE_HEAD" ] && git cherry-pick --no-commit "${COMPILE_COMMIT}".."$SOURCE_HEAD"

          rm -f .github/update_date

          git add --all

      - name: Commit and Push to ${{ env.TARGET_BRANCH }}
        run: |
          if git diff --staged --quiet; then
            echo "Working tree is clean. No changes to commit."
            exit 0
          fi

          TZ_VALUE="America/Phoenix"
          day=$(TZ="$TZ_VALUE" date +"%-d")
          month=$(TZ="$TZ_VALUE" date +"%B")
          year=$(TZ="$TZ_VALUE" date +"%Y")

          case $day in
            11|12|13) s=th ;;
            *) case $((day % 10)) in 1) s=st ;; 2) s=nd ;; 3) s=rd ;; *) s=th ;; esac ;;
          esac

          commit_message="${month} ${day}${s}, ${year} Update"

          if git log -1 --pretty=%s | grep -q "$commit_message"; then
            git commit --amend --no-edit
          else
            git commit -m "$commit_message"
          fi

          git remote set-url origin https://x-access-token:${GITHUB_TOKEN}@github.com/${{ github.repository }}
          git push origin "${{ env.TARGET_BRANCH }}" --force