import json
import threading
import unittest
import urllib.request
import urllib.error
from unittest.mock import patch
from server import Server, HardwareProvider

class Tests(unittest.TestCase):
    def setUp(self):
        self.server=Server(0)
        self.thread=threading.Thread(target=self.server.serve_forever)
        self.thread.start()
        self.url=f'http://127.0.0.1:{self.server.server_port}'
    def tearDown(self):
        self.server.shutdown()
        self.server.demo.stop()
        self.server.server_close()
        self.thread.join()
    def request(self,path,method='GET',headers=None):
        req=urllib.request.Request(self.url+'/api/v1/'+path,method=method,headers=headers or {})
        with urllib.request.urlopen(req) as r:return json.load(r)
    def test_lifecycle(self):
        self.assertEqual(self.request('status')['demo']['state'],'stopped')
        a=self.request('demo/start','POST',{'X-Athena-Deck':'1'})
        self.assertTrue(a['reachable'])
        self.assertEqual(a['pid'],self.request('demo/start','POST',{'X-Athena-Deck':'1'})['pid'])
        child=self.server.demo.process
        self.assertEqual(self.request('demo/stop','POST',{'X-Athena-Deck':'1'})['state'],'stopped')
        self.assertIsNotNone(child.poll())
        self.assertFalse(self.request('demo/stop','POST',{'X-Athena-Deck':'1'})['reachable'])
    def test_control_guard(self):
        for headers in ({},{'X-Athena-Deck':'1','Origin':'http://evil.invalid'}):
            with self.assertRaises(urllib.error.HTTPError) as e:self.request('demo/start','POST',headers)
            self.assertEqual(e.exception.code,403)
        with self.assertRaises(urllib.error.HTTPError) as e:self.request('models/start','POST',{'X-Athena-Deck':'1'})
        self.assertEqual(e.exception.code,404)
    def test_unavailable_hardware(self):
        with patch('server.subprocess.run',side_effect=OSError()):
            result=HardwareProvider().snapshot()
        self.assertFalse(result['available'])
        self.assertEqual(result['gpus'],[])
        self.assertIsNone(result['sampled_at'])

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