"""Offline verification of captured practice evidence; never contacts simulator."""

import json
import math
from pathlib import Path
import unittest
from geometry import Measurement, solve

ROOT=Path(__file__).resolve().parents[1]


class PracticeReplayTests(unittest.TestCase):
    def test_action_log_and_derived_geometry(self):
        folder=ROOT/'output/q1/practice'
        files=list(folder.glob('*_actions.json'))
        self.assertTrue(files, '缺少本次演练采集证据')
        for path in files:
            events=json.loads(path.read_text(encoding='utf-8'))
            pos=(0,0);channel=1;virtual=0
            self.assertEqual(events[0]['path'],'/enter')
            self.assertEqual(events[-1]['path'],'/exit')
            self.assertEqual(events[-1]['response']['exit_reason'],'user_exit')
            ids=[]
            for event in events:
                self.assertIn(event['path'],('/enter','/measure','/exit'))
                request,response=event['request'],event['response']
                self.assertTrue(response['accepted'])
                ids.append(request['request_id'])
                if event['path']=='/measure':
                    new=(request['position']['x'],request['position']['y'])
                    virtual+=math.dist(pos,new)/5+5+(request['channel']!=channel)
                    pos,channel=new,request['channel']
                self.assertAlmostEqual(virtual,response['virtual_time_s'],places=5)
            self.assertEqual(len(ids),len(set(ids)))
            observation_path=path.with_name(path.name.replace('_actions','_observations'))
            data=json.loads(observation_path.read_text(encoding='utf-8'))
            ms=[Measurement(**m) for m in data['measurements']]
            recomputed=solve(ms)
            self.assertAlmostEqual(recomputed['diameter_m'],data['result']['diameter_m'],places=9)
            self.assertEqual(data['source'],'official_practice')
            self.assertIsNone(data['ground_truth'])
            directions=[e for e in events if e['response'].get('measure_result')=='direction']
            self.assertEqual(directions[0]['request']['position'],directions[1]['request']['position'])
            self.assertEqual(directions[0]['response']['svd_deg'],directions[1]['response']['svd_deg'])


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