"""
Tests de validation - Fiche #2 : Validation des calculs de centre BBOX (format XYWH)

Vérifie que tous les calculs de centre utilisent les bons calculs pour le format XYWH :
- BBOX format: (x, y, w, h)
- Centre correct = (x + w/2, y + h/2)

Auteur: Dom, Alice Kiro - 15 décembre 2024
"""

import pytest
from unittest.mock import Mock, patch
from dataclasses import dataclass
from typing import Tuple, List, Optional

from core.execution.action_executor import ActionExecutor
from core.execution.target_resolver import TargetResolver
from core.models.screen_state import ScreenState
from core.models.ui_element import UIElement
from core.models.workflow_graph import Action, ActionType, TargetSpec


@dataclass
class MockUIElement:
    """Mock UIElement pour les tests"""
    element_id: str
    bbox: Tuple[int, int, int, int]  # (x, y, w, h)
    label: str = ""
    role: str = ""
    confidence: float = 0.9


class TestBBoxCenterCalculations:
    """Tests pour vérifier que le format BBOX est cohérent dans tout le système"""
    
    def test_bbox_format_consistency(self):
        """Test que le format BBOX utilise le bon calcul de centre"""
        # Définir un BBOX de test
        test_bbox = (50, 75, 100, 150)  # x=50, y=75, w=100, h=150
        
        # Centre attendu
        expected_center = (100, 150)  # (50 + 100/2, 75 + 150/2)
        
        # Vérifier que nos calculs sont cohérents
        center_x = test_bbox[0] + test_bbox[2] / 2  # x + w/2
        center_y = test_bbox[1] + test_bbox[3] / 2  # y + h/2
        
        expected_area = test_bbox[2] * test_bbox[3]  # w * h = 100 * 150 = 15000
        area = test_bbox[2] * test_bbox[3]
        
        assert (center_x, center_y) == expected_center
        assert area == expected_area
        
        # Vérifier que l'ancien calcul (incorrect) donne des résultats différents
        old_incorrect_center_x = (test_bbox[0] + test_bbox[2]) / 2  # (x+w)/2 ❌
        old_incorrect_center_y = (test_bbox[1] + test_bbox[3]) / 2  # (y+h)/2 ❌
        
        # L'ancien calcul ('incorrect) donnerait un résultat différent
        assert center_x != old_incorrect_center_x  # 100 != 75 ❌
        assert center_y != old_incorrect_center_y  # 150 != 112.5 ❌


def test_action_executor_click_position():
    """Test que ActionExecutor calcule correctement la position de clic"""
    
    # Créer une action de clic
    action = Mock()
    action.type = ActionType.MOUSE_CLICK
    action.target = Mock()
    action.parameters = {}
    action.params = {}
    
    # Mock screen state
    screen_state = Mock()
    
    # Créer un élément avec BBOX XYWH
    mock_element = MockUIElement(
        element_id="test_button",
        bbox=(100, 200, 50, 30),  # x=100, y=200, w=50, h=30
        label="Test Button",
        role="button"
    )
    
    # Mock du resolved target
    mock_resolved = Mock()
    mock_resolved.element = mock_element
    
    # Mock du target resolver pour retourner notre élément
    with patch('core.execution.action_executor.TargetResolver') as mock_resolver_class:
        mock_resolver = Mock()
        mock_resolver.resolve_target.return_value = mock_resolved
        mock_resolver_class.return_value = mock_resolver
        
        # Mock pyautogui pour capturer les coordonnées de clic
        with patch('core.execution.action_executor.pyautogui') as mock_pyautogui:
            
            # Exécuter l'action
            executor = ActionExecutor()
            result = executor._execute_click(action, screen_state)
            
            # Vérifier que pyautogui.click a été appelé avec les bonnes coordonnées
            mock_pyautogui.click.assert_called_once()
            call_args = mock_pyautogui.click.call_args[0]
            click_x, click_y = call_args
            
            # Centre attendu: (125, 215)
            expected_x = 100 + 50 / 2  # 125
            expected_y = 200 + 30 / 2  # 215
            
            assert click_x == expected_x
            assert click_y == expected_y


def test_target_resolver_position_matching():
    """Test que TargetResolver utilise les bons calculs de centre pour la recherche de position"""
    
    # Créer des éléments de test
    elements = [
        MockUIElement("elem1", (100, 100, 50, 50)),  # centre: (125, 125)
        MockUIElement("elem2", (200, 200, 30, 30)),  # centre: (215, 215)  
        MockUIElement("elem3", (140, 140, 40, 40)),  # centre: (160, 160)
    ]
    
    # Position de recherche proche de elem3
    search_position = (170, 170)

    # Mock context avec spatial_index=None pour forcer le fallback linéaire
    mock_context = Mock()
    mock_context.workflow_context = {"spatial_index": None}

    # Mock _get_ui_elements pour retourner nos éléments
    resolver = TargetResolver(position_tolerance=50)
    with patch.object(resolver, '_get_ui_elements', return_value=elements):

        # Résoudre par position
        result = resolver._resolve_by_position(search_position, elements, mock_context)

        # Devrait trouver elem3 (distance ≈ 14)
        assert result is not None
        assert result.element.element_id == "elem3"


def test_target_resolver_proximity_filter():
    """Test que le filtre de proximité utilise les bons calculs de centre"""
    
    # Élément ancre: bbox (90, 110, 20, 20) -> centre (100, 120)
    anchor = MockUIElement("anchor", (90, 110, 20, 20))

    # Éléments à tester (distances au centre de l'ancre (100, 120)):
    # near:   centre (125, 125), distance = sqrt(25² + 5²) ≈ 25.5
    # medium: centre (130, 130), distance = sqrt(30² + 10²) ≈ 31.6
    # far:    centre (205, 205), distance = sqrt(105² + 85²) ≈ 135.1
    elements = [
        MockUIElement("near", (120, 120, 10, 10)),
        MockUIElement("medium", (125, 125, 10, 10)),
        MockUIElement("far", (200, 200, 10, 10)),
    ]

    resolver = TargetResolver()

    # Filtrer avec distance max = 50
    filtered = resolver._filter_by_proximity(elements, anchor, max_distance=50)

    # Seuls "near" et "medium" devraient être dans le résultat
    filtered_ids = [elem.element_id for elem in filtered]
    assert "near" in filtered_ids
    assert "medium" in filtered_ids
    assert "far" not in filtered_ids


if __name__ == "__main__":
    pytest.main([__file__, "-v"])