#!/usr/bin/env python3
# This file is part of Tryton.  The COPYRIGHT file at the top level of
# this repository contains the full copyright notices and license terms.

import importlib.metadata
import io
import json
import os
import subprocess
from multiprocessing.dummy import Pool

from packaging.requirements import Requirement

root = os.path.dirname(os.path.dirname(__file__))
module_path = os.path.join(root, 'modules')

dependencies = set()
build_dependencies = {
    'rnc2rng',
    'Babel',
    'hatchling',
    'hatch-tryton',
    }
development_dependencies = build_dependencies | {
    'Sphinx',
    'cookiecutter',
    'sphinx-lint',
    'tox',
    }

FNULL = open(os.devnull, 'w')

_build_deps_installed = True
try:
    for requirement in build_dependencies:
        importlib.metadata.version(Requirement(requirement).name)
except importlib.metadata.PackageNotFoundError:
    _build_deps_installed = False


def add_dependencies(package):
    cmd = 'python3 -m build -qq --metadata'
    if _build_deps_installed:
        cmd += ' --no-isolation'
    metadata = subprocess.check_output(
        cmd, shell=True, encoding='utf-8', cwd=package).strip()
    metadata = json.loads(metadata)
    for requirement in metadata.get('requires_dist', []):
        requirement = Requirement(requirement)
        if (requirement.name.startswith('trytond')
                or requirement.name in {'proteus', 'tryton'}):
            continue
        development = bool(requirement.marker)
        requirement.marker = None
        if development:
            development_dependencies.add(requirement)
        else:
            dependencies.add(requirement)


pool = Pool()
pool.apply_async(add_dependencies, (os.path.join(root, 'trytond'),))
pool.apply_async(add_dependencies, (os.path.join(root, 'tryton'),))
pool.apply_async(add_dependencies, (os.path.join(root, 'proteus'),))
pool.apply_async(add_dependencies, (os.path.join(root, 'trytond-gis'),))

for module in os.listdir(module_path):
    path = os.path.join(module_path, module)
    if not os.path.isdir(path):
        continue
    pool.apply_async(add_dependencies, (path,))

pool.close()
pool.join()

with io.open(os.path.join(root, 'requirements.txt'), 'w') as fp:
    fp.writelines(map(lambda d: d + '\n', sorted(map(str, dependencies))))

with io.open(os.path.join(root, 'requirements-dev.txt'), 'w') as fp:
    fp.writelines(
        map(lambda d: d + '\n', sorted(map(str, development_dependencies))))