name: Sync from Nova Base

on:
  # Run daily at 6:00 AM UTC
  schedule:
    - cron: '0 6 * * *'

  # Allow manual trigger
  workflow_dispatch:
    inputs:
      force_update:
        description: 'Force update even if no changes'
        required: false
        default: 'false'
        type: boolean

jobs:
  sync:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          submodules: recursive
          fetch-depth: 0
          token: ${{ secrets.GITHUB_TOKEN }}

      - name: Update nova-base submodule to latest
        run: |
          cd nova-base
          git fetch origin master
          git checkout origin/master
          cd ..
          echo "NOVA_COMMIT=$(cd nova-base && git rev-parse --short HEAD)" >> $GITHUB_ENV

      - name: Check for changes in nova-base
        id: check_changes
        run: |
          if git diff --quiet nova-base; then
            echo "has_changes=false" >> $GITHUB_OUTPUT
            echo "No changes in nova-base"
          else
            echo "has_changes=true" >> $GITHUB_OUTPUT
            echo "Changes detected in nova-base"
          fi

      - name: Set up Python
        if: steps.check_changes.outputs.has_changes == 'true' || inputs.force_update == 'true'
        uses: actions/setup-python@v5
        with:
          python-version: '3.11'

      - name: Run sync script
        if: steps.check_changes.outputs.has_changes == 'true' || inputs.force_update == 'true'
        run: |
          python scripts/sync_from_nova.py

      - name: Check for output changes
        if: steps.check_changes.outputs.has_changes == 'true' || inputs.force_update == 'true'
        id: check_output
        run: |
          if git diff --quiet chains/ xcm/ icons/; then
            echo "output_changed=false" >> $GITHUB_OUTPUT
            echo "No output changes after sync"
          else
            echo "output_changed=true" >> $GITHUB_OUTPUT
            echo "Output files changed"
            git diff --stat chains/ xcm/ icons/
          fi

      - name: Create Pull Request
        if: steps.check_output.outputs.output_changed == 'true'
        uses: peter-evans/create-pull-request@v6
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: "chore: sync from nova-base (${{ env.NOVA_COMMIT }})"
          title: "🔄 Sync from Nova Base"
          body: |
            ## Automated Nova Base Sync

            This PR syncs the latest changes from [nova-utils](https://github.com/novasamatech/nova-utils).

            **Nova commit:** `${{ env.NOVA_COMMIT }}`

            ### Changes included:
            - Updated chain configurations
            - Updated XCM transfer configs
            - Updated icons

            ---
            *This PR was automatically created by the sync workflow.*
          branch: sync/nova-base-${{ env.NOVA_COMMIT }}
          delete-branch: true
          labels: |
            automated
            sync
            dependencies

      # Each daily run opens a new sync PR. Nothing closed the previous one, so they
      # accumulated: 31 branches spanning 2026-02-10 to 2026-08-08 were cleared out by
      # hand on 2026-08-11, every one of them superseded by the next day's run.
      #
      # A sync is a snapshot of upstream. The newest one contains everything the older
      # ones did, so an older open sync PR is never the right thing to merge — it is
      # noise that hides whether anything is genuinely waiting for review.
      - name: Close superseded sync PRs
        if: steps.check_output.outputs.output_changed == 'true'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          KEEP: sync/nova-base-${{ env.NOVA_COMMIT }}
        run: |
          gh pr list --repo "$GITHUB_REPOSITORY" --state open --label sync \
            --json number,headRefName --jq '.[] | @base64' | while read -r row; do
            decoded=$(echo "$row" | base64 -d)
            NUM=$(echo "$decoded" | python3 -c 'import json,sys; print(json.load(sys.stdin)["number"])')
            HEAD=$(echo "$decoded" | python3 -c 'import json,sys; print(json.load(sys.stdin)["headRefName"])')
            [ "$HEAD" = "$KEEP" ] && continue
            echo "Closing #$NUM ($HEAD) — superseded by $KEEP"
            gh pr close "$NUM" --repo "$GITHUB_REPOSITORY" --delete-branch \
              --comment "Superseded by \`$KEEP\`. A sync is a snapshot of upstream, so the newer one contains everything this did."
          done