name: Update Stops Data

on:
  schedule:
    - cron: '0 0 * * *'
  workflow_dispatch:

jobs:
  update-stops-data:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Install uv
        uses: astral-sh/setup-uv@v5
      
      - name: Run download script
        run: uv run data/download-stops.py
        
      - name: Commit changes if any
        id: commit
        run: |
          git config --local user.email "actions@github.com"
          git config --local user.name "GitHub Actions"
          git add public/stops.json
          if git diff --staged --exit-code; then
            echo "No changes to commit"
            echo "changes_made=false" >> $GITHUB_OUTPUT
          else
            # Create a new branch with timestamp
            BRANCH_NAME="update-stops-data-$(date +%Y-%m-%d-%H%M%S)"
            git checkout -b $BRANCH_NAME
            git commit -m "Update stops data"
            git push origin $BRANCH_NAME
            echo "branch_name=$BRANCH_NAME" >> $GITHUB_OUTPUT
            echo "changes_made=true" >> $GITHUB_OUTPUT
          fi
          
      - name: Create Pull Request
        if: steps.commit.outputs.changes_made == 'true'
        env:
          GH_TOKEN: ${{ github.token }}
          BRANCH_NAME: ${{ steps.commit.outputs.branch_name }}
        run: |
          # Close any existing PRs created by this action
          existing_prs=$(gh pr list --json number,title,headRefName --search "Update stops data in:title head:update-stops-data- author:app/github-actions is:open")
          
          if [[ $(echo "$existing_prs" | jq length) -gt 0 ]]; then
            echo "Found existing PRs to close"
            echo "$existing_prs" | jq -c '.[]' | while read pr; do
              pr_number=$(echo "$pr" | jq -r '.number')
              echo "Closing PR #$pr_number"
              gh pr close $pr_number --comment "Superseded by a new PR with updated data"
            done
          fi
          
          # Create new PR
          gh pr create \
            --title "Update stops data" \
            --body "Automatically generated PR with updated stops data from scheduled fetch." \
            --base main \
            --head "$BRANCH_NAME"