name: Publish Package

on:
  push:
    branches:
      - "**"
  workflow_dispatch:

jobs:
  publish:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.11"

      - name: Install build tools
        run: |
          python -m pip install --upgrade pip
          python -m pip install build twine

      - name: Check publishing credentials
        env:
          TWINE_USERNAME: ${{ secrets.REGISTRY_USER }}
          TWINE_PASSWORD: ${{ secrets.REGISTRY_PASSWORD }}
        run: |
          test -n "$TWINE_USERNAME" || { echo "Missing REGISTRY_USER secret"; exit 1; }
          test -n "$TWINE_PASSWORD" || { echo "Missing REGISTRY_PASSWORD secret"; exit 1; }

      - name: Set CI package version
        env:
          TWINE_USERNAME: ${{ secrets.REGISTRY_USER }}
          TWINE_PASSWORD: ${{ secrets.REGISTRY_PASSWORD }}
        run: |
          python - <<'PY'
          from pathlib import Path
          from urllib.error import HTTPError
          from urllib.parse import urlencode
          from urllib.request import Request, urlopen
          import base64
          import json
          import os
          import re
          import tomllib

          OWNER = 'tryton-do'
          PACKAGE_TYPE = 'pypi'
          API_ROOT = 'https://gitea.joseagrc.com/api/v1'

          def normalize(name):
              return re.sub(r'[-_.]+', '-', name).lower()

          cfg_path = Path('tryton.cfg')
          cfg_text = cfg_path.read_text()
          cfg_match = re.search(r'(?m)^version=(.+)$', cfg_text)
          if not cfg_match:
              raise SystemExit('tryton.cfg has no version entry')
          base_version = cfg_match.group(1).strip()
          version_match = re.fullmatch(r'(\d+)\.(\d+)\.(\d+)', base_version)
          if not version_match:
              raise SystemExit(
                  f'tryton.cfg version must be X.Y.Z, got {base_version!r}')
          major, minor, patch = map(int, version_match.groups())

          pyproject = tomllib.loads(Path('pyproject.toml').read_text())
          package_name = pyproject['project']['name']
          normalized_name = normalize(package_name)

          username = os.environ['TWINE_USERNAME']
          password = os.environ['TWINE_PASSWORD']
          token = base64.b64encode(
              f'{username}:{password}'.encode()).decode()

          def request_json(path, params=None, missing_ok=False):
              url = f'{API_ROOT}{path}'
              if params:
                  url = f'{url}?{urlencode(params)}'
              request = Request(url, headers={
                  'Accept': 'application/json',
                  'Authorization': f'Basic {token}',
                  })
              try:
                  with urlopen(request, timeout=30) as response:
                      return json.load(response)
              except HTTPError as error:
                  if missing_ok and error.code == 404:
                      return []
                  raise

          def collect_versions(payload, package_specific=False):
              versions = []
              if isinstance(payload, list):
                  for item in payload:
                      versions.extend(collect_versions(item, package_specific))
              elif isinstance(payload, dict):
                  item_name = payload.get('name') or payload.get('package_name')
                  item_type = payload.get('type') or payload.get('package_type')
                  item_version = payload.get('version')
                  if item_version and (
                          package_specific
                          or (item_type == PACKAGE_TYPE
                              and normalize(item_name or '') == normalized_name)):
                      versions.append(str(item_version))
                  for value in payload.values():
                      if isinstance(value, (list, dict)):
                          versions.extend(collect_versions(value, package_specific))
              return versions

          versions = []
          for page in range(1, 11):
              payload = request_json(
                  f'/packages/{OWNER}/{PACKAGE_TYPE}/{package_name}',
                  {'page': page, 'limit': 100},
                  missing_ok=True)
              page_versions = collect_versions(payload, package_specific=True)
              versions.extend(page_versions)
              if not page_versions:
                  break

          for page in range(1, 11):
              payload = request_json(
                  f'/packages/{OWNER}',
                  {'page': page, 'limit': 100, 'type': PACKAGE_TYPE,
                   'q': package_name})
              page_versions = collect_versions(payload)
              versions.extend(page_versions)
              if not page_versions:
                  break

          patch_pattern = re.compile(rf'^{major}\.{minor}\.(\d+)$')
          patches = [patch]
          for version in set(versions):
              match = patch_pattern.fullmatch(version)
              if match:
                  patches.append(int(match.group(1)))

          ci_version = f'{major}.{minor}.{max(patches) + 1}'
          cfg_text = re.sub(
              r'(?m)^version=.+$', f'version={ci_version}', cfg_text)
          cfg_path.write_text(cfg_text)
          print(f'Package name: {package_name}')
          print(f'Published versions found: {sorted(set(versions))}')
          print(f'Package version: {ci_version}')
          PY

      - name: Build package
        run: |
          python -m build

      - name: Check package
        run: |
          python -m twine check dist/*

      - name: Publish to Gitea PyPI registry
        env:
          TWINE_USERNAME: ${{ secrets.REGISTRY_USER }}
          TWINE_PASSWORD: ${{ secrets.REGISTRY_PASSWORD }}
        run: |
          python -m twine upload \
            --repository-url https://gitea.joseagrc.com/api/packages/tryton-do/pypi \
            dist/*