using UnityEditor;
using UnityEngine;
using Interactions;

namespace Editor
{
    /// <summary>
    /// Custom editor for TriggerAnimationOnInteraction with helpful validation and feedback
    /// </summary>
    [CustomEditor(typeof(TriggerAnimationOnInteraction))]
    public class TriggerAnimationOnInteractionEditor : UnityEditor.Editor
    {
        private SerializedProperty _interactable;
        private SerializedProperty _animator;
        private SerializedProperty _triggerName;

        private void OnEnable()
        {
            _interactable = serializedObject.FindProperty("interactable");
            _animator = serializedObject.FindProperty("animator");
            _triggerName = serializedObject.FindProperty("triggerName");
        }

        public override void OnInspectorGUI()
        {
            serializedObject.Update();

            // Draw script field (read-only)
            EditorGUI.BeginDisabledGroup(true);
            EditorGUILayout.ObjectField("Script", MonoScript.FromMonoBehaviour((MonoBehaviour)target), GetType(), false);
            EditorGUI.EndDisabledGroup();

            EditorGUILayout.Space();

            // Component References
            EditorGUILayout.LabelField("Component References (Optional)", EditorStyles.boldLabel);
            EditorGUILayout.PropertyField(_interactable);
            EditorGUILayout.PropertyField(_animator);
            
            if (_interactable.objectReferenceValue == null || _animator.objectReferenceValue == null)
            {
                EditorGUILayout.HelpBox("Leave fields empty to auto-discover components on this GameObject or children.", MessageType.Info);
            }

            EditorGUILayout.Space();

            // Animation Settings
            EditorGUILayout.LabelField("Animation Settings", EditorStyles.boldLabel);
            EditorGUILayout.PropertyField(_triggerName);

            if (string.IsNullOrEmpty(_triggerName.stringValue))
            {
                EditorGUILayout.HelpBox("Assign a trigger name that matches a trigger parameter in the Animator.", MessageType.Warning);
            }

            EditorGUILayout.Space();

            // Component Discovery Info
            EditorGUILayout.LabelField("Component Discovery Status", EditorStyles.boldLabel);
            
            var component = (TriggerAnimationOnInteraction)target;
            
            // Check what will be used at runtime
            InteractableBase resolvedInteractable = _interactable.objectReferenceValue as InteractableBase;
            if (resolvedInteractable == null)
            {
                resolvedInteractable = component.GetComponent<InteractableBase>();
            }
            if (resolvedInteractable == null)
            {
                resolvedInteractable = component.GetComponentInChildren<InteractableBase>();
            }

            Animator resolvedAnimator = _animator.objectReferenceValue as Animator;
            if (resolvedAnimator == null)
            {
                resolvedAnimator = component.GetComponent<Animator>();
            }
            if (resolvedAnimator == null)
            {
                resolvedAnimator = component.GetComponentInChildren<Animator>();
            }

            // Show discovered components
            if (resolvedInteractable != null)
            {
                string source = _interactable.objectReferenceValue != null ? "Assigned" : "Auto-discovered";
                EditorGUILayout.HelpBox($"✓ Interactable: {resolvedInteractable.gameObject.name} ({source})", MessageType.Info);
            }
            else
            {
                EditorGUILayout.HelpBox("✗ No Interactable found! Assign one or ensure an Interactable exists on this GameObject or children.", MessageType.Error);
            }

            if (resolvedAnimator != null)
            {
                string source = _animator.objectReferenceValue != null ? "Assigned" : "Auto-discovered";
                EditorGUILayout.HelpBox($"✓ Animator: {resolvedAnimator.gameObject.name} ({source})", MessageType.Info);
            }
            else
            {
                EditorGUILayout.HelpBox("✗ No Animator found! Assign one or ensure an Animator exists on this GameObject or children.", MessageType.Error);
            }

            EditorGUILayout.Space();

            // Behavior explanation
            EditorGUILayout.HelpBox(
                "Behavior:\n" +
                "• Components can be manually assigned or auto-discovered\n" +
                "• Auto-discovery searches: this GameObject → children\n" +
                "• Listens to interactionComplete event from Interactable\n" +
                "• Triggers animation ONLY when interaction succeeds (success = true)\n" +
                "• Uses SetTrigger() with the specified trigger name",
                MessageType.None
            );

            serializedObject.ApplyModifiedProperties();
        }
    }
}