import os
import subprocess
import tempfile
import unittest

REPO_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
SCRIPT_PATH = os.path.join(REPO_DIR, "cloud-uptime", "recover-after-rebuild.sh")

class TestRecoverAfterRebuild(unittest.TestCase):
    def test_script_exists_and_executable(self):
        self.assertTrue(os.path.exists(SCRIPT_PATH), f"Script missing: {SCRIPT_PATH}")
        self.assertTrue(os.access(SCRIPT_PATH, os.X_OK), "Script not executable")

    def test_bash_syntax_check(self):
        proc = subprocess.run(["bash", "-n", SCRIPT_PATH], capture_output=True, text=True)
        self.assertEqual(proc.returncode, 0, f"Bash syntax error: {proc.stderr}")

    def test_dry_run_execution(self):
        proc = subprocess.run([SCRIPT_PATH, "--dry-run"], capture_output=True, text=True)
        self.assertEqual(proc.returncode, 0, f"Dry-run failed: {proc.stderr}")
        self.assertIn("running in DRY-RUN mode", proc.stdout)
        self.assertIn("machine:", proc.stdout)

    def test_machine_env_override(self):
        with tempfile.TemporaryDirectory() as tmpdir:
            ws_tunnel = os.path.join(tmpdir, "workspace", "tunnel")
            os.makedirs(ws_tunnel, exist_ok=True)
            env_file = os.path.join(ws_tunnel, "machine.env")
            with open(env_file, "w") as f:
                f.write("MUSE_MACHINE=custom-test-node\nSSH_PORT=9922\nTERM_PORT=8877\n")
            
            env = os.environ.copy()
            env["HOME"] = tmpdir
            proc = subprocess.run([SCRIPT_PATH, "--dry-run"], env=env, capture_output=True, text=True)
            self.assertEqual(proc.returncode, 0, f"Run with env failed: {proc.stderr}")
            self.assertIn("custom-test-node", proc.stdout)
            self.assertIn("9922", proc.stdout)
            self.assertIn("8877", proc.stdout)

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