#!/usr/bin/env python3
"""Test runner prerequisite decisions with fake tools, not actual Apple SDKs."""
import os
from pathlib import Path
import subprocess
import tempfile
import unittest

SCRIPT = Path(__file__).with_name("check-ci-runner.sh")


class RunnerPrerequisiteTests(unittest.TestCase):
    def run_check(self, mode, system="Linux", architecture="x86_64", missing=None, broken_xcode=False):
        with tempfile.TemporaryDirectory(prefix="yuvomi-runner-test-") as temporary:
            directory = Path(temporary)
            for name in ["git", "curl", "unzip", "python3", "xcodebuild", "xcrun"]:
                if name == missing:
                    continue
                path = directory / name
                status = 1 if name == "xcodebuild" and broken_xcode else 0
                path.write_text(f"#!/bin/sh\nexit {status}\n")
                path.chmod(0o700)
            uname = directory / "uname"
            uname.write_text('#!/bin/sh\ncase "$1" in -s) echo "$TEST_SYSTEM";; -m) echo "$TEST_ARCH";; esac\n')
            uname.chmod(0o700)
            return subprocess.run(["/bin/bash", str(SCRIPT), mode], capture_output=True, text=True,
                                  env={**os.environ, "PATH": temporary, "TEST_SYSTEM": system,
                                       "TEST_ARCH": architecture})

    def test_android_accepts_linux_x64(self):
        self.assertEqual(self.run_check("android").returncode, 0)

    def test_android_rejects_arm(self):
        self.assertNotEqual(self.run_check("android", architecture="aarch64").returncode, 0)

    def test_android_rejects_macos(self):
        self.assertNotEqual(self.run_check("android", system="Darwin").returncode, 0)

    def test_ios_accepts_native_arm_with_tools(self):
        self.assertEqual(self.run_check("ios", system="Darwin", architecture="arm64").returncode, 0)

    def test_ios_rejects_rosetta_or_intel(self):
        self.assertNotEqual(self.run_check("ios", system="Darwin").returncode, 0)

    def test_ios_rejects_linux(self):
        self.assertNotEqual(self.run_check("ios", architecture="arm64").returncode, 0)

    def test_missing_python_is_actionable(self):
        result = self.run_check("android", missing="python3")
        self.assertNotEqual(result.returncode, 0)
        self.assertIn("install python3", result.stderr)

    def test_missing_full_xcode_fails(self):
        result = self.run_check("ios", system="Darwin", architecture="arm64", missing="xcodebuild")
        self.assertNotEqual(result.returncode, 0)
        self.assertIn("full Xcode", result.stderr)

    def test_broken_xcode_fails(self):
        self.assertNotEqual(self.run_check("ios", system="Darwin", architecture="arm64",
                                          broken_xcode=True).returncode, 0)

    def test_unknown_mode_fails(self):
        self.assertNotEqual(self.run_check("other").returncode, 0)


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