"""Exercise the real executable adapter, including cargo-ndk's CC environment."""
import json
import os
from pathlib import Path
import subprocess
import sys
import tempfile
import unittest

ADAPTER = Path(__file__).resolve().parents[2] / 'Android/scripts/cargo-locked-offline.py'


class CargoAdapterTests(unittest.TestCase):
    def setUp(self):
        temporary = tempfile.TemporaryDirectory()
        self.addCleanup(temporary.cleanup)
        self.root = Path(temporary.name)
        (self.root / 'Cargo.lock').write_text('version = 4\n')
        (self.root / 'Cargo.toml').write_text('[package]\nname="fixture"\n')
        self.cargo = self.root / 'real-cargo'
        self.cargo.write_text(f'#!{sys.executable}\nimport json,os,sys\n'
                             'print(json.dumps({"args":sys.argv[1:],"env":dict(os.environ)}))\n')
        self.cargo.chmod(0o700)

    def run_adapter(self, args, **extra):
        env = dict(os.environ, ANDROID_REAL_CARGO=str(self.cargo), CARGO=str(ADAPTER),
                   CARGO_NET_OFFLINE='false', **extra)
        env['CC_aarch64-linux-android'] = '/fixture/ndk/bin/clang'
        env['CXX_aarch64-linux-android'] = '/fixture/ndk/bin/clang++'
        return subprocess.run([str(ADAPTER), *args], cwd=self.root, env=env, capture_output=True, text=True, timeout=5)

    def test_metadata_is_locked_offline_and_ndk_keys_survive(self):
        result = self.run_adapter(['metadata', '--format-version', '1', '--no-deps'])
        self.assertEqual(result.returncode, 0, result.stderr)
        value = json.loads(result.stdout)
        self.assertEqual(value['args'], ['metadata', '--format-version', '1', '--no-deps', '--locked', '--offline'])
        self.assertEqual(value['env']['CC_aarch64-linux-android'], '/fixture/ndk/bin/clang')
        self.assertEqual(value['env']['CXX_aarch64-linux-android'], '/fixture/ndk/bin/clang++')
        self.assertEqual(value['env']['CARGO'], str(self.cargo))
        self.assertEqual(value['env']['CARGO_NET_OFFLINE'], 'true')

    def test_exact_build_retains_manifest_target_and_lock_flags(self):
        args = ['build', '--release', '--locked', '--offline', '--manifest-path',
                str(self.root / 'Cargo.toml'), '--target', 'aarch64-linux-android',
                '--message-format', 'json-render-diagnostics']
        result = self.run_adapter(args)
        self.assertEqual(result.returncode, 0, result.stderr)
        self.assertEqual(json.loads(result.stdout)['args'], args)
        for index, replacement in [(2, '--frozen'), (5, '/other/Cargo.toml'), (7, 'x86_64-unknown-linux-gnu')]:
            bad = args.copy(); bad[index] = replacement
            self.assertEqual(self.run_adapter(bad).returncode, 64)

    def test_unknown_commands_and_missing_lock_never_run_cargo(self):
        for args in ([], ['update'], ['metadata'], ['build', '--release'],
                     ['metadata', '--format-version', '1', '--no-deps', '--locked']):
            result = self.run_adapter(args)
            self.assertEqual(result.returncode, 64)
            self.assertEqual(result.stdout, '')
        (self.root / 'Cargo.lock').unlink()
        self.assertEqual(self.run_adapter(['metadata', '--format-version', '1', '--no-deps']).returncode, 64)


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