on:
  push:
    branches: [master]
    paths-ignore:
      - "wip/**"
      - "README.md"
      - ".gitignore"
      - ".claude/**"

jobs:
  publish:
    runs-on: ubuntu-latest
    container:
      image: python:3.12-slim

    steps:
      - name: Install system deps
        run: apt-get update -qq && apt-get install -y --no-install-recommends git pandoc ca-certificates

      - name: Checkout ncmr-songs
        env:
          FAPAT: ${{ secrets.FAPAT }}
          URL_TO_GITEA: ${{ vars.URL_TO_GITEA }}
        run: |
          git clone "http://mikkeli:${FAPAT}@${URL_TO_GITEA#http://}/mikkeli/ncmr-songs" ncmr-songs
          git -C ncmr-songs checkout ${{ github.sha }}

      - name: Checkout auto-wiki (renderer)
        env:
          FAPAT: ${{ secrets.FAPAT }}
          URL_TO_GITEA: ${{ vars.URL_TO_GITEA }}
        run: git clone "http://mikkeli:${FAPAT}@${URL_TO_GITEA#http://}/mikkeli/novoyuuparosk-auto-wiki" auto-wiki

      - name: Install Python deps
        run: pip install --no-cache-dir -r auto-wiki/pipelines/songs/requirements.txt

      - name: Detect changed files
        id: diff
        run: |
          BASE="${{ github.event.before }}"
          HEAD="${{ github.sha }}"
          if [ -z "$BASE" ] || echo "$BASE" | grep -qE '^0+$'; then
            echo "mode=all" >> "$GITHUB_OUTPUT"
          else
            git -C ncmr-songs diff --name-only "$BASE" "$HEAD" -- '*.md' \
              | grep -v '^wip/' | grep -v '^README\.md' \
              > /tmp/changed.txt 2>/dev/null || true
            cat /tmp/changed.txt
            echo "mode=incremental" >> "$GITHUB_OUTPUT"
            echo "files=$(tr '\n' ' ' < /tmp/changed.txt)" >> "$GITHUB_OUTPUT"
          fi

      - name: Publish
        env:
          WIKI_API_URL: ${{ vars.WIKI_API_URL }}
          WIKI_BASE_URL: ${{ vars.WIKI_BASE_URL }}
          WIKI_BOT_USER: ${{ secrets.WIKI_BOT_USER }}
          WIKI_BOT_PASSWORD: ${{ secrets.WIKI_BOT_PASSWORD }}
          SOURCE_REF: ${{ github.sha }}
          GITEA_REPO_URL: ${{ vars.URL_TO_GITEA }}/mikkeli/ncmr-songs
        run: |
          if [ "${{ steps.diff.outputs.mode }}" = "all" ]; then
            python auto-wiki/pipelines/songs/render.py --source-dir ncmr-songs --all
          else
            FILES="${{ steps.diff.outputs.files }}"
            if [ -z "$FILES" ]; then
              echo "No changed .md files. Nothing to publish."
              exit 0
            fi
            # shellcheck disable=SC2086
            python auto-wiki/pipelines/songs/render.py --source-dir ncmr-songs --files $FILES
          fi