# stdlib
from typing import Callable, List, Union

# 3rd party
import pkginfo
import pytest
from coincidence.regressions import AdvancedDataRegressionFixture
from domdf_python_tools.paths import PathPlus, in_directory
from hatchling.__about__ import __version__ as hatchling_version
from hatchling.build import build_sdist, build_wheel
from packaging.version import Version

# this package
from hatch_requirements_txt import parse_requirements

pyproject_toml_header = """
[project]
name = "demo"
version = "0.0.1"
authors = [
  { name="Example Author", email="author@example.com" },
]
description = "A small example package"
readme = "README.md"
requires-python = ">=3.6"
classifiers = [
    "Programming Language :: Python :: 3",
    "License :: OSI Approved :: MIT License",
    "Operating System :: OS Independent",
]
dynamic = ["dependencies"]

[project.urls]
Homepage = "https://github.com/pypa/sampleproject"
"Bug Tracker" = "https://github.com/pypa/sampleproject/issues"
"""


def get_pkginfo(
		tmp_pathplus: PathPlus,
		build_func: Callable,
		pyproject_toml: str,
		) -> Union[pkginfo.SDist, pkginfo.Wheel]:

	dist_dir = tmp_pathplus / "dist"
	dist_dir.maybe_make()

	(tmp_pathplus / "pyproject.toml").write_clean(pyproject_toml)
	(tmp_pathplus / "README.md").touch()
	(tmp_pathplus / "LICENSE").touch()
	(tmp_pathplus / "demo").maybe_make()
	(tmp_pathplus / "demo" / "__init__.py").touch()

	with in_directory(tmp_pathplus):
		dist_filename = build_func(dist_dir)
		dist_file = dist_dir / dist_filename
		info: Union[pkginfo.SDist, pkginfo.Wheel]
		if dist_filename.endswith(".whl"):
			info = pkginfo.Wheel(dist_file)
		elif dist_filename.endswith(".tar.gz"):
			info = pkginfo.SDist(dist_file)
		else:
			raise ValueError(f"Dist file {dist_filename} is neither a wheel nor an sdist.")
		return info


@pytest.mark.parametrize("build_func", [build_wheel, build_sdist])
def test_build_with_filename(tmp_pathplus: PathPlus, build_func: Callable):

	pyproject_toml = pyproject_toml_header + """
[tool.hatch.metadata.hooks.requirements_txt]
filename = "requirements.txt"
"""
	(tmp_pathplus / "requirements.txt").write_lines(["Foo", "bar", "# fizz", "baz>1"])

	deprecation_warning_msg = r"The 'filename' option in \[tool.hatch.metadata.hooks.requirements_txt] is deprecated. Please instead use the list 'files'"
	with pytest.warns(DeprecationWarning, match=deprecation_warning_msg):
		info = get_pkginfo(tmp_pathplus, build_func, pyproject_toml)

	assert info.requires_dist == ["bar", "baz>1", "foo"]


@pytest.mark.parametrize("build_func", [build_wheel, build_sdist])
def test_build_comments(tmp_pathplus: PathPlus, build_func: Callable):

	pyproject_toml = pyproject_toml_header + """
[tool.hatch.metadata.hooks.requirements_txt]
files = ["requirements.txt"]

[tool.hatch.metadata]
allow-direct-references = true
"""
	(tmp_pathplus / "requirements.txt").write_lines([
			"Foo",
			"bar",
			"# fizz",
			"baz>1  # this is a comment",
			"pip@ https://github.com/pypa/pip/archive/1.3.1.zip#sha1=da9234ee9982d4bbb3c72346a6de940a148ea686"
			])

	info = get_pkginfo(tmp_pathplus, build_func, pyproject_toml)
	assert info.requires_dist == [
			"bar",
			"baz>1",
			"foo",
			"pip@ https://github.com/pypa/pip/archive/1.3.1.zip#sha1=da9234ee9982d4bbb3c72346a6de940a148ea686"
			]


@pytest.mark.parametrize("build_func", [build_wheel, build_sdist])
def test_build_pip_compile_style(tmp_pathplus: PathPlus, build_func: Callable):

	pyproject_toml = pyproject_toml_header + """
[tool.hatch.metadata.hooks.requirements_txt]
files = ["requirements.txt"]
"""
	(tmp_pathplus / "requirements.txt").write_lines([
			"--index http://localhost:3141",
			"alembic==1.9.1 \\",
			"    --hash=sha256:a9781ed0979a20341c2cbb56bd22bd8db4fc1913f955e705444bd3a97c59fa32 \\",
			"    --hash=sha256:f9f76e41061f5ebe27d4fe92600df9dd612521a7683f904dab328ba02cffa5a2",
			"hatch-requirements-txt",
			])

	info = get_pkginfo(tmp_pathplus, build_func, pyproject_toml)
	assert info.requires_dist == [
			"alembic==1.9.1",
			"hatch-requirements-txt",
			]


@pytest.mark.parametrize("build_func", [build_wheel, build_sdist])
def test_build_unspecified(tmp_pathplus: PathPlus, build_func: Callable):

	pyproject_toml = pyproject_toml_header + """
[tool.hatch.metadata.hooks.requirements_txt]
# files = ["requirements.txt"]
"""
	(tmp_pathplus / "requirements.txt").write_lines(["Foo", "bar", "# fizz", "baz>1"])

	deprecation_warning_msg = r"Please explicitly specify 'files' in \[tool.hatch.metadata.hooks.requirements_txt]. Defaulting to \['requirements.txt'] is deprecated"
	with pytest.warns(DeprecationWarning, match=deprecation_warning_msg):
		info = get_pkginfo(tmp_pathplus, build_func, pyproject_toml)

	assert info.requires_dist == ["bar", "baz>1", "foo"]


@pytest.mark.parametrize("build_func", [build_wheel, build_sdist])
def test_build_with_files(tmp_pathplus: PathPlus, build_func: Callable):

	pyproject_toml = pyproject_toml_header + """
[tool.hatch.metadata.hooks.requirements_txt]
files = ["requirements1.txt", "requirements2.txt"]
"""
	(tmp_pathplus / "requirements1.txt").write_lines(["Foo", "bar", "# fizz", "baz>1"])
	(tmp_pathplus / "requirements2.txt").write_lines(["beep", "bop", "boop"])
	info = get_pkginfo(tmp_pathplus, build_func, pyproject_toml)
	assert info.requires_dist == ["bar", "baz>1", "beep", "boop", "bop", "foo"]


@pytest.mark.parametrize("build_func", [build_wheel, build_sdist])
def test_build_files_in_subdirectory(tmp_pathplus: PathPlus, build_func: Callable):

	pyproject_toml = pyproject_toml_header + """
[tool.hatch.metadata.hooks.requirements_txt]
files = ["requirements/dev.txt", "requirements/docs.txt", "requirements/tests.txt"]
"""
	reqs_subdir = tmp_pathplus / "requirements"
	reqs_subdir.maybe_make()
	(reqs_subdir / "dev.txt").write_lines(["pre-commit"])
	(reqs_subdir / "docs.txt").write_lines(["mkdocs"])
	(reqs_subdir / "tests.txt").write_lines(["pytest"])
	info = get_pkginfo(tmp_pathplus, build_func, pyproject_toml)
	assert info.requires_dist == ["mkdocs", "pre-commit", "pytest"]

	pyproject_toml = pyproject_toml_header.replace(
			'dynamic = ["dependencies"]',
			'dynamic = ["dependencies", "optional-dependencies"]',
			) + """
[tool.hatch.metadata.hooks.requirements_txt]
files = []

[tool.hatch.metadata.hooks.requirements_txt.optional-dependencies]
dev = ["requirements/dev.txt"]
docs = ["requirements/docs.txt"]
tests = ["requirements/tests.txt"]
"""
	info = get_pkginfo(tmp_pathplus, build_func, pyproject_toml)
	assert info.provides_extras == ["dev", "docs", "tests"]
	assert info.requires_dist == [
			"pre-commit; extra == 'dev'",
			"mkdocs; extra == 'docs'",
			"pytest; extra == 'tests'",
			]


@pytest.mark.parametrize("build_func", [build_wheel, build_sdist])
def test_not_dynamic_no_explicit_files(tmp_pathplus: PathPlus, build_func: Callable):

	dist_dir = tmp_pathplus / "dist"
	dist_dir.maybe_make()

	pyproject_toml = pyproject_toml_header.replace('dynamic = ["dependencies"]', '')
	(tmp_pathplus / "README.md").touch()
	(tmp_pathplus / "LICENSE").touch()
	(tmp_pathplus / "demo").maybe_make()
	(tmp_pathplus / "demo" / "__init__.py").touch()

	info = get_pkginfo(tmp_pathplus, build_func, pyproject_toml)
	assert info.requires_dist == ()


@pytest.mark.parametrize("build_func", [build_wheel, build_sdist])
def test_not_dynamic_project_dependencies(tmp_pathplus: PathPlus, build_func: Callable):

	dist_dir = tmp_pathplus / "dist"
	dist_dir.maybe_make()

	pyproject_toml = pyproject_toml_header.replace(
			'dynamic = ["dependencies"]', 'dependencies = ["foo", "bar", "baz>1"]'
			)
	(tmp_pathplus / "README.md").touch()
	(tmp_pathplus / "LICENSE").touch()
	(tmp_pathplus / "demo").maybe_make()
	(tmp_pathplus / "demo" / "__init__.py").touch()

	info = get_pkginfo(tmp_pathplus, build_func, pyproject_toml)
	assert info.requires_dist == ["bar", "baz>1", "foo"]


@pytest.mark.skip(reason="unknown error")
@pytest.mark.parametrize("build_func", [build_wheel, build_sdist])
def test_optional_dependencies(tmp_pathplus: PathPlus, build_func: Callable):

	pyproject_toml = pyproject_toml_header + """
[tool.hatch.metadata.hooks.requirements_txt]
files = ["requirements.txt"]

[tool.hatch.metadata.hooks.requirements_txt.optional-dependencies]
crypto = ["requirements-crypto.txt"]
fastjson = ["requirements-fastjson.txt"]
cli = ["requirements-cli.txt"]
"""
	pyproject_toml = pyproject_toml.replace(
			'dynamic = ["dependencies"]', 'dynamic = ["dependencies", "optional-dependencies"]'
			)
	(tmp_pathplus / "requirements.txt").write_lines(["Foo", "bar", "# fizz", "baz>1"])
	(tmp_pathplus / "requirements-crypto.txt").write_lines(["PyJWT", "cryptography"])
	(tmp_pathplus / "requirements-fastjson.txt").write_lines(["orjson"])
	(tmp_pathplus / "requirements-cli.txt").write_lines([
			"prompt-toolkit", "colorama; platform_system == 'Windows'"
			])
	info = get_pkginfo(tmp_pathplus, build_func, pyproject_toml)
	assert info.provides_extras == ["cli", "crypto", "fastjson"]
	colorama_dependency = "colorama; (platform_system == 'Windows') and extra == 'cli'"
	# https://github.com/pypa/hatch/commit/2741233fcc19177a7a045d67a39077d828e31fd6
	if Version(hatchling_version) < Version("1.20"):
		colorama_dependency = "colorama; platform_system == 'Windows' and extra == 'cli'"
	assert info.requires_dist == [
			"bar",
			"baz>1",
			"foo",
			colorama_dependency,
			"prompt-toolkit; extra == 'cli'",
			"cryptography; extra == 'crypto'",
			"pyjwt; extra == 'crypto'",
			"orjson; extra == 'fastjson'"
			]


requirements_a = [
		"autodocsumm>=0.2.0",
		"default-values>=0.2.0",
		"domdf-sphinx-theme>=0.1.0",
		"extras-require>=0.2.0",
		"repo-helper-sphinx-theme>=0.0.2",
		"seed-intersphinx-mapping>=0.1.1",
		"sphinx>=3.0.3",
		"ruamel-yaml>=0.16.12",
		"sphinx-click>=2.5.0",
		"sphinx-copybutton>=0.2.12",
		"sphinx-notfound-page>=0.5",
		"sphinx-prompt>=1.1.0",
		"sphinx-tabs>=1.1.13",
		"sphinx-toolbox>=1.7.1",
		"sphinxcontrib-autoprogram>=0.1.5",
		"sphinxcontrib-httpdomain>=1.7.0",
		"sphinxemoji>=0.1.6",
		"toctree-plus>=0.0.4",
		]

requirements_b = [
		"autodocsumm>=0.2.0",
		"default-values>=0.2.0",
		"domdf-sphinx-theme>=0.1.0",
		"domdf-sphinx-theme>=0.1.0",
		"extras-require>=0.2.0",
		"repo-helper-sphinx-theme>=0.0.2",
		"seed-intersphinx-mapping>=0.1.1",
		"sphinx>=3.0.3",
		"sphinx-click>=2.5.0",
		"sphinx-copybutton>=0.2.12",
		"sphinx-copybutton>=0.2.12",
		"sphinx-notfound-page>=0.5",
		"sphinx-prompt>=1.1.0",
		"sphinx-tabs>=1.1.13",
		"sphinx-toolbox>=1.7.1",
		"ruamel.yaml>=0.16.12",
		"sphinxcontrib-autoprogram>=0.1.5",
		"sphinxcontrib-autoprogram>=0.1.5",
		"sphinxcontrib-httpdomain>=1.7.0",
		"sphinxemoji>=0.1.6",
		"toctree-plus>=0.0.4",
		"toctree-plus>=0.0.3",
		]

requirements_c = [
		'numpy==1.19.3; platform_system == "Windows"',
		'numpy>=1.19.1; platform_system != "Windows"',
		]


@pytest.mark.parametrize(
		"requirements",
		[
				pytest.param(requirements_a, id='a'),
				pytest.param(requirements_b, id='b'),
				pytest.param(requirements_c, id='c'),
				pytest.param(iter(requirements_a), id="iter(a)"),
				pytest.param(iter(requirements_b), id="iter(b)"),
				pytest.param(iter(requirements_c), id="iter(c)"),
				pytest.param(set(requirements_a), id="set(a)"),
				pytest.param(set(requirements_b), id="set(b)"),
				pytest.param(set(requirements_c), id="set(c)"),
				pytest.param(tuple(requirements_a), id="tuple(a)"),
				pytest.param(tuple(requirements_b), id="tuple(b)"),
				pytest.param(tuple(requirements_c), id="tuple(c)"),
				]
		)
def test_parse_requirements(
		advanced_data_regression: AdvancedDataRegressionFixture,
		requirements: List[str],
		):
	advanced_data_regression.check(sorted(map(str, parse_requirements(requirements)[0])))


@pytest.mark.parametrize("build_func", [build_wheel, build_sdist])
def test_using_project_dependencies(tmp_pathplus: PathPlus, build_func: Callable):

	pyproject_toml = pyproject_toml_header.replace(
			'dynamic = ["dependencies"]', """
dynamic = []
dependencies = ["foo", "bar"]
   """
			)
	info = get_pkginfo(tmp_pathplus, build_func, pyproject_toml)
	assert info.requires_dist == ["bar", "foo"]


@pytest.mark.parametrize("build_func", [build_wheel, build_sdist])
def test_using_project_deps_and_optional_deps(tmp_pathplus: PathPlus, build_func: Callable):

	pyproject_toml = pyproject_toml_header.replace(
			'dynamic = ["dependencies"]',
			"""
dynamic = ["optional-dependencies"]
dependencies = ["foo", "bar"]
   """
			) + """
[tool.hatch.metadata.hooks.requirements_txt.optional-dependencies]
crypto = ["requirements-crypto.txt"]
"""
	(tmp_pathplus / "requirements-crypto.txt").write_lines(["PyJWT", "cryptography"])
	info = get_pkginfo(tmp_pathplus, build_func, pyproject_toml)
	assert info.provides_extras == ["crypto"]
	assert info.requires_dist == [
			"bar",
			"foo",
			"cryptography; extra == 'crypto'",
			"pyjwt; extra == 'crypto'",
			]