using UnityEditor;
using UnityEngine;
using UnityEngine.UI;

namespace AibisDream.FrameAnimation.Editor
{
    [CustomEditor(typeof(FrameAnimationPlayer))]
    public sealed class FrameAnimationPlayerEditor : UnityEditor.Editor
    {
        private SerializedProperty graphProperty;
        private SerializedProperty playOnEnableProperty;
        private SerializedProperty speedProperty;

        private void OnEnable()
        {
            graphProperty = serializedObject.FindProperty("graph");
            playOnEnableProperty = serializedObject.FindProperty("playOnEnable");
            speedProperty = serializedObject.FindProperty("speed");
        }

        public override void OnInspectorGUI()
        {
            serializedObject.Update();
            EditorGUILayout.PropertyField(graphProperty);
            EditorGUILayout.PropertyField(playOnEnableProperty);
            EditorGUILayout.PropertyField(speedProperty);

            DrawConfigurationWarnings();
            serializedObject.ApplyModifiedProperties();

            if (Application.isPlaying)
            {
                DrawRuntimeState();
            }
        }

        private void DrawConfigurationWarnings()
        {
            var player = (FrameAnimationPlayer)target;
            var spriteRenderer = player.GetComponent<SpriteRenderer>();
            var image = player.GetComponent<Image>();

            if (player.GetComponent<FrameClipPlayer>() != null)
            {
                EditorGUILayout.HelpBox(
                    "同一 GameObject 不能同时包含 FrameAnimationPlayer 和 FrameClipPlayer。",
                    MessageType.Error);
            }

            if (spriteRenderer == null && image == null)
            {
                EditorGUILayout.HelpBox(
                    "同一 GameObject 上必须存在一个 SpriteRenderer 或 Image。",
                    MessageType.Error);
            }
            else if (spriteRenderer != null && image != null)
            {
                EditorGUILayout.HelpBox(
                    "同一 GameObject 不能同时存在 SpriteRenderer 和 Image。",
                    MessageType.Error);
            }

            if (graphProperty.objectReferenceValue == null)
            {
                EditorGUILayout.HelpBox("尚未绑定 FrameAnimationGraph。", MessageType.Error);
            }

            if (!FrameAnimationValueUtility.IsValidSpeed(speedProperty.floatValue))
            {
                EditorGUILayout.HelpBox("Speed 必须是有限且不小于 0 的数值。", MessageType.Error);
            }
        }

        private void DrawRuntimeState()
        {
            var player = (FrameAnimationPlayer)target;
            EditorGUILayout.Space();
            EditorGUILayout.LabelField("Runtime State", EditorStyles.boldLabel);
            using (new EditorGUI.DisabledScope(true))
            {
                EditorGUILayout.EnumPopup("State", player.State);
                EditorGUILayout.TextField("Playable", player.CurrentPlayableId);
                EditorGUILayout.TextField("Clip", player.CurrentClipId);
                EditorGUILayout.TextField("Node", player.CurrentNodeId);
                EditorGUILayout.IntField("Frame", player.CurrentFrameIndex);
            }

            Repaint();
        }
    }
}