name: Sync indicator count

on:
  push:
    branches: [main]
    tags: ['v*']
  pull_request:
  workflow_dispatch:

permissions:
  contents: read

jobs:
  sync:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          token: ${{ secrets.ABOUT_SYNC_TOKEN }}

      - name: Count indicators
        id: count
        run: |
          n=$(grep -c '^mod ' crates/wickra-core/src/indicators/mod.rs)
          echo "count=$n" >> "$GITHUB_OUTPUT"
          echo "Indicator count: $n"

      - name: Update GitHub About description
        if: github.event_name != 'pull_request'
        env:
          GH_TOKEN: ${{ secrets.ABOUT_SYNC_TOKEN }}
        run: |
          n="${{ steps.count.outputs.count }}"
          desc="Streaming-first technical indicators with a Rust core and Python, Node.js, and WebAssembly bindings. ${n} indicators, O(1) per-tick updates, no system dependencies. Drop-in TA-Lib replacement."
          current=$(gh repo view --json description -q .description)
          if [ "$current" = "$desc" ]; then
            echo "About unchanged."
          else
            gh repo edit --description "$desc"
            echo "About updated."
          fi

      - name: Patch README + site counters
        if: github.event_name != 'pull_request'
        id: patch
        run: |
          n="${{ steps.count.outputs.count }}"
          sed -i -E "s/[0-9]+ (streaming-first )?indicators/${n} \1indicators/g" README.md site/index.md
          if git diff --quiet; then
            echo "changed=false" >> "$GITHUB_OUTPUT"
          else
            echo "changed=true" >> "$GITHUB_OUTPUT"
          fi

      - name: Commit & push README + site
        if: steps.patch.outputs.changed == 'true' && github.event_name != 'pull_request' && github.ref == 'refs/heads/main'
        run: |
          git config user.name "wickra-bot"
          git config user.email "wickra-bot@users.noreply.github.com"
          git add README.md site/index.md
          git commit -m "chore: sync indicator count to ${{ steps.count.outputs.count }} [skip ci]"
          git push

      - name: Sync Wiki
        if: github.event_name != 'pull_request'
        env:
          GH_TOKEN: ${{ secrets.ABOUT_SYNC_TOKEN }}
        run: |
          n="${{ steps.count.outputs.count }}"
          git clone "https://x-access-token:${GH_TOKEN}@github.com/${{ github.repository }}.wiki.git" wiki
          cd wiki
          sed -i -E "s/[0-9]+ (streaming-first )?indicators/${n} \1indicators/g" Home.md FAQ.md Streaming-vs-Batch.md
          if git diff --quiet; then
            echo "Wiki unchanged."
            exit 0
          fi
          git config user.name "wickra-bot"
          git config user.email "wickra-bot@users.noreply.github.com"
          git add Home.md FAQ.md Streaming-vs-Batch.md
          git commit -m "chore: sync indicator count to ${n}"
          git push