name: Update rankings

on:
  schedule:
    - cron: '0 0 * * *'
  workflow_dispatch:
  push:
    branches: [main]
    paths:
      - 'data/agents.yml'
      - 'templates/**'
      - '**.go'
      - 'go.mod'
      - '.github/workflows/update.yml'

permissions:
  contents: write

concurrency:
  group: update-rankings
  cancel-in-progress: false

jobs:
  update:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-go@v5
        with:
          go-version: 'stable'
          cache: true

      - name: Run updater
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: go run .

      - name: Commit changes
        run: |
          git config user.name  "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git add README.md data/history.jsonl
          if git diff --staged --quiet; then
            echo "no changes"
            exit 0
          fi
          git commit -m "chore: daily ranking refresh"
          # rebase + retry guards against the race where two runs commit near-simultaneously.
          # -X theirs makes our run's data/history.jsonl line win conflicts (our snapshot is the freshest).
          for attempt in 1 2 3; do
            if git push; then exit 0; fi
            echo "push attempt $attempt rejected, rebasing on origin/main"
            git pull --rebase -X theirs origin main
          done
          exit 1