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", "uptime-watcher.sh")

class TestUptimeWatcher(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_watcher_execution_in_sandbox(self):
        with tempfile.TemporaryDirectory() as tmpdir:
            hooks_state = os.path.join(tmpdir, "hooks", "state", "uptime-watcher")
            os.makedirs(hooks_state, exist_ok=True)
            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=test-node\nSSH_PORT=2224\nTERM_PORT=7681\n")
                
            env = os.environ.copy()
            env["HOME"] = tmpdir
            # Running with dry environment should safely exit (fail count tracked)
            proc = subprocess.run([SCRIPT_PATH], env=env, capture_output=True, text=True)
            # The script exits 0 even on fail unless fatal crash, logging status
            self.assertTrue(os.path.exists(os.path.join(hooks_state, "consec_failures")))

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