import sys
from pathlib import Path
import unittest
from unittest.mock import patch
import subprocess

sys.path.insert(0, str(Path(__file__).parents[1] / "vm"))
import accessibility
import desktop


class AccessibilityTests(unittest.TestCase):
    def setUp(self):
        self.target = {"id": "1", "path": [0, 0, 2], "app": "editor", "name": "Input", "role": "text", "bounds": [10, 20, 100, 40]}
        self.saved = {"observationId": "abc", "size": [800, 600], "targets": [self.target]}
        self.current = {"targets": [self.target]}

    def test_center(self):
        self.assertEqual(accessibility.resolve_target(self.saved, self.current, "abc", "1", 800, 600), (60, 40))

    def test_stale_and_missing(self):
        for observation, target, width in [("old", "1", 800), ("abc", "2", 800), ("abc", "1", 900)]:
            with self.assertRaises(ValueError):
                accessibility.resolve_target(self.saved, self.current, observation, target, width, 600)
        with self.assertRaises(ValueError):
            accessibility.resolve_target(self.saved, {"targets": []}, "abc", "1", 800, 600)

    def test_moved_target(self):
        moved = {**self.target, "bounds": [100, 100, 100, 40]}
        with self.assertRaises(ValueError):
            accessibility.resolve_target(self.saved, {"targets": [moved]}, "abc", "1", 800, 600)

    def test_timeout_fallback(self):
        with patch.object(subprocess, "run", side_effect=subprocess.TimeoutExpired("scan", 3)):
            result = accessibility.collect(800, 600)
        self.assertEqual(result["targets"], [])
        self.assertIn("unavailable", result["warning"])

    def test_target_must_be_first(self):
        target = {"type": "click_target", "target": "1", "observationId": "abc"}
        desktop.validate({"actions": [target]}, 800, 600)
        with self.assertRaises(ValueError):
            desktop.validate({"actions": [{"type": "keys", "keys": ["Return"]}, target]}, 800, 600)


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