#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
ISO Standards Setup.

Standard setup.py file which is used to package and distribute a Python package
with Distutils so that it can be published to a PyPI server.  This file
belongs in the root directory of a project repository.  This is an example that
uses some basic options which are available for the setup of a PyPI package. It
also reads and gathers example dependencies for a package.
See:
    https://pythonhosted.org/setuptools/setuptools.html for more details.
"""

import configparser
import hashlib
import os

from ddex_ingester_common import __version__
from setuptools import Command
from setuptools import find_packages
from setuptools import setup


class register(Command):
    """No-op: setup.py register was removed from setuptools."""

    description = 'no-op register (removed in modern setuptools)'
    user_options = [('repository=', 'r', 'repository name / URL (ignored)')]

    def initialize_options(self):
        """No-op."""
        self.repository = None

    def finalize_options(self):
        """No-op."""

    def run(self):
        """No-op."""


class upload(Command):
    """Upload dist files to a PyPI server (replaces removed setuptools upload).""" # noqa

    description = 'upload dist files to a PyPI-compatible server'
    user_options = [('repository=', 'r', 'repository name from .pypirc')]

    def initialize_options(self):
        """Set default repository."""
        self.repository = 'pypi'

    def finalize_options(self):
        """No-op."""

    def run(self):
        """Read ~/.pypirc and POST each dist file to the repository."""
        # Imported lazily so setup.py remains importable before requests is installed. # noqa
        import requests # noqa

        # Read repository URL and credentials from ~/.pypirc using the -r value
        rc_path = os.path.expanduser('~/.pypirc')
        cfg = configparser.RawConfigParser()
        if not cfg.read(rc_path):
            raise SystemExit(f'upload: {rc_path} not found')
        try:
            repo_url = cfg.get(self.repository, 'repository')
            username = cfg.get(self.repository, 'username')
            password = cfg.get(self.repository, 'password')
        except configparser.NoSectionError:
            raise SystemExit(
                f'upload: section [{self.repository}] not found in {rc_path}'
            )

        # dist_files is populated by the preceding sdist/bdist_wheel commands
        # in the same invocation (e.g. `setup.py sdist bdist_wheel upload`).
        dist_files = getattr(self.distribution, 'dist_files', [])
        if not dist_files:
            raise SystemExit(
                'upload: no dist files found; '
                'run sdist and/or bdist_wheel first'
            )

        for _cmd, _pyver, filename in dist_files:
            # Compute MD5 in chunks to avoid loading artifacts into memory.
            digest = hashlib.md5()  # noqa: S324
            with open(filename, 'rb') as fh:
                for chunk in iter(lambda: fh.read(65536), b''):
                    digest.update(chunk)

            # Stream the file directly to requests rather than buffering it.
            with open(filename, 'rb') as fh:
                resp = requests.post(
                    repo_url,
                    auth=(username, password),
                    data={
                        ':action': 'file_upload',
                        'name': self.distribution.get_name(),
                        'version': self.distribution.get_version(),
                        'md5_digest': digest.hexdigest(),
                    },
                    files={
                        'content': (
                            os.path.basename(filename),
                            fh,
                            'application/octet-stream',
                        )
                    },
                    timeout=120,
                )
            resp.raise_for_status()
            print(f'Uploaded {os.path.basename(filename)} to {repo_url}')


def read_requirements(path):
    """Read requirements from file based on file path provided.

    Lines beginning with a dash are excluded, e.g. references to an internal
    PyPI server url (-i).
    Args:
        path (str): File path for requirements text file.
    Returns:
        Array of requirements libraries.
    """
    with open(path, 'r') as fd:
        requirements = [
            req.strip() for req in fd.readlines() if not req.startswith('-')]
        return requirements


install_requires = list(read_requirements('requirements.txt'))

setup(
    cmdclass={'register': register, 'upload': upload},
    name='ddex_ingester_common',
    version=__version__,
    url='https://github.com/theorchard/lambda-ddex-ingester-common/',
    author='The Orchard',
    author_email='webdev@theorchard.com',
    description='Common package for DDEX Ingester.',
    packages=find_packages(),
    test_suite='tests',
    include_package_data=True,
    zip_safe=False,
    install_requires=install_requires,
    classifiers=[
        'Programming Language :: Python :: 3.8',
        'Programming Language :: Python :: 3.9',
        'Programming Language :: Python :: 3.10',
        'Programming Language :: Python :: 3.11'
    ],
)