import re
import unittest
from pathlib import Path


class ArchPkgbuildOptionalWineTests(unittest.TestCase):
    @classmethod
    def setUpClass(cls) -> None:
        repository = Path(__file__).resolve().parents[1]
        cls.repository = repository
        versionContents = (
            repository / "src" / "cthulhu" / "cthulhuVersion.py"
        ).read_text(encoding="utf-8")
        versionMatch = re.search(r'(?m)^version = "([^"]+)"$', versionContents)
        if versionMatch is None:
            raise AssertionError("Unable to read the current Cthulhu version")
        cls.releaseVersion = versionMatch.group(1)
        cls.pkgbuilds = [
            repository / "distro-packages" / "Arch-Linux" / name / "PKGBUILD"
            for name in ("cthulhu", "cthulhu-git")
        ]
        cls.helperPkgbuilds = [
            repository / "distro-packages" / "Arch-Linux" / name / "PKGBUILD"
            for name in ("cthulhu-wine-access", "cthulhu-wine-access-git")
        ]

    @staticmethod
    def _array_contents(contents: str, arrayName: str) -> str:
        return contents.split(f"{arrayName}=(", 1)[1].split(")", 1)[0]

    def test_main_packages_disable_wine_helper_build(self) -> None:
        for pkgbuild in self.pkgbuilds:
            with self.subTest(pkgbuild=pkgbuild):
                contents = pkgbuild.read_text(encoding="utf-8")
                self.assertIn("-Dwine-access=disabled", contents)

    def test_main_packages_do_not_depend_on_wine(self) -> None:
        for pkgbuild in self.pkgbuilds:
            with self.subTest(pkgbuild=pkgbuild):
                contents = pkgbuild.read_text(encoding="utf-8")
                dependencySection = contents.split("source=(", 1)[0]
                dependencyLines = {
                    line.strip().strip("'")
                    for line in dependencySection.splitlines()
                    if line.strip() and not line.lstrip().startswith("#")
                }
                self.assertNotIn("wine", dependencyLines)

    def test_main_packages_advertise_interchangeable_optional_helper(self) -> None:
        helperDescription = (
            "'cthulhu-wine-access: Wine, Proton, NVDA Controller, and Tolk integration'"
        )
        for pkgbuild in self.pkgbuilds:
            with self.subTest(pkgbuild=pkgbuild):
                contents = pkgbuild.read_text(encoding="utf-8")
                self.assertIn(
                    helperDescription,
                    self._array_contents(contents, "optdepends_x86_64"),
                )
                self.assertNotIn(
                    "cthulhu-wine-access",
                    self._array_contents(contents, "optdepends"),
                )

    def test_stable_packages_use_current_release_version(self) -> None:
        for pkgbuild in (self.pkgbuilds[0], self.helperPkgbuilds[0]):
            with self.subTest(pkgbuild=pkgbuild):
                contents = pkgbuild.read_text(encoding="utf-8")
                self.assertRegex(
                    contents,
                    rf"(?m)^pkgver={re.escape(self.releaseVersion)}$",
                )

    def test_release_metadata_uses_current_release_version(self) -> None:
        mesonContents = (self.repository / "meson.build").read_text(encoding="utf-8")
        self.assertRegex(
            mesonContents,
            rf"(?m)^  version: '{re.escape(self.releaseVersion)}(?:-[^']+)?',$",
        )

        expectedSlackwareVersion = f"VERSION=${{VERSION:-{self.releaseVersion}}}"
        for relativePath in (
            ("distro-packages", "Slackware", "cthulhu.SlackBuild"),
            ("distro-packages", "Slint", "cthulhu.SlackBuild"),
        ):
            with self.subTest(relativePath=relativePath):
                contents = self.repository.joinpath(*relativePath).read_text(
                    encoding="utf-8"
                )
                self.assertIn(expectedSlackwareVersion, contents)

        slintInfo = (
            self.repository / "distro-packages" / "Slint" / "cthulhu-info"
        ).read_text(encoding="utf-8")
        self.assertRegex(
            slintInfo,
            rf'(?m)^VERSION="{re.escape(self.releaseVersion)}"$',
        )

    def test_stable_helper_has_release_contract(self) -> None:
        contents = self.helperPkgbuilds[0].read_text(encoding="utf-8")
        self.assertRegex(contents, r"(?m)^arch=\(x86_64\)$")

    def test_optional_helpers_do_not_depend_on_main_package(self) -> None:
        for pkgbuild in self.helperPkgbuilds:
            with self.subTest(pkgbuild=pkgbuild):
                contents = pkgbuild.read_text(encoding="utf-8")
                dependencies = self._array_contents(contents, "depends")
                self.assertNotRegex(
                    dependencies,
                    r"(?m)^\s*['\"]?cthulhu(?:-git)?(?:[<>=].*)?['\"]?\s*$",
                )

    def test_git_helper_provides_stable_helper_name(self) -> None:
        contents = self.helperPkgbuilds[1].read_text(encoding="utf-8")
        self.assertRegex(contents, r"(?m)^provides=\(cthulhu-wine-access\)$")
        self.assertRegex(contents, r"(?m)^conflicts=\(cthulhu-wine-access\)$")

    def test_optional_helper_packages_build_only_the_helper(self) -> None:
        for pkgbuild in self.helperPkgbuilds:
            with self.subTest(pkgbuild=pkgbuild):
                contents = pkgbuild.read_text(encoding="utf-8")
                self.assertIn('/scripts/build-wine-access.sh"', contents)
                self.assertNotIn("arch-meson", contents)
                self.assertRegex(contents, r"(?m)^  wine$")
                makeDependencies = self._array_contents(contents, "makedepends")
                self.assertNotRegex(makeDependencies, r"(?m)^\s*meson\s*$")

    def test_optional_helper_packages_disable_lto(self) -> None:
        for pkgbuild in self.helperPkgbuilds:
            with self.subTest(pkgbuild=pkgbuild):
                contents = pkgbuild.read_text(encoding="utf-8")
                self.assertRegex(contents, r"(?m)^options=\(!lto\)$")

    def test_git_sources_declare_git_as_a_build_dependency(self) -> None:
        for pkgbuild in self.pkgbuilds + self.helperPkgbuilds:
            with self.subTest(pkgbuild=pkgbuild):
                contents = pkgbuild.read_text(encoding="utf-8")
                self.assertIn("git+", contents)
                makeDependencies = contents.split("makedepends=(", 1)[1].split(
                    ")", 1
                )[0]
                self.assertRegex(makeDependencies, r"(?m)^  git$")


if __name__ == "__main__":
    unittest.main()