import importlib.util
import json
import tempfile
import unittest
from pathlib import Path
from test_bridge import bridge
source=Path(__file__).resolve().parents[2]/'tools/pi_gpio/device_feedback.py'
spec=importlib.util.spec_from_file_location('feedback',source)
feedback=importlib.util.module_from_spec(spec);spec.loader.exec_module(feedback)
class Pin:
    def __init__(self,pin,**kwargs): self.value=False;self.closed=False
    def on(self):self.value=True
    def off(self):self.value=False
    def close(self):self.closed=True
class FeedbackTests(unittest.TestCase):
    def config(self,data,pins):
        with tempfile.TemporaryDirectory() as folder:
            path=Path(folder)/'devices.json';path.write_text(json.dumps(data))
            return feedback.load_devices(path,pins)
    def test_pin_ownership(self):
        with self.assertRaises(ValueError):self.config([dict(id='r',port='J1',kind='rfid')],[17])
        with self.assertRaises(ValueError):self.config([dict(id='b',port='J17',kind='input',pull_up=True)],[16])
        with self.assertRaises(ValueError):self.config([dict(id='b',port='J17',kind='input')],[25])
        with self.assertRaises(ValueError):self.config([dict(id='x',port='J22',kind='output')],[18])
        result=self.config([dict(id='r',port='J2',kind='rfid'),dict(id='b',port='J17',kind='input',pull_up=True)],[25])
        self.assertEqual(result[1]['pin'],16)
    def test_live_values_transitions_age_and_cleanup(self):
        now=[100]
        definitions=self.config([dict(id='button',port='J17',kind='input',pull_up=True),dict(id='lamp',port='J22',kind='output')],[25])
        outputs=bridge.Outputs(Pin,'test',[25],clock=lambda:now[0])
        monitor=feedback.Feedback(definitions,Pin,outputs,clock=lambda:now[0])
        monitor.tick();first=monitor.snapshot();monitor.tick()
        self.assertEqual(len(first['events']),len(monitor.snapshot()['events']))
        monitor.inputs[0][1].value=True
        outputs.command(dict(controller='test',pin=25,mode='pulse',duration_ms=200,active_high=True))
        monitor.tick()
        self.assertTrue(all(d['value'] for d in monitor.snapshot()['devices']))
        now[0]+=.3;outputs.tick();monitor.tick()
        self.assertFalse(monitor.snapshot()['devices'][1]['value'])
        now[0]+=7
        self.assertGreater(monitor.snapshot()['devices'][0]['age_ms'],6000)
        self.assertGreater(monitor.snapshot()['events'][0]['age_ms'],6000)
        self.assertNotIn('stamp',monitor.snapshot()['events'][0])
        pin=monitor.inputs[0][1];monitor.close();outputs.close();self.assertTrue(pin.closed)
    def test_rfid_requires_helper(self):
        outputs=bridge.Outputs(Pin,'test',[25])
        with self.assertRaises(ValueError):feedback.Feedback([dict(id='r',kind='rfid',port='J1')],Pin,outputs)
        outputs.close()