using UnityEditor;
using UnityEngine;
using UnityEngine.UI;

namespace AibisDream.FrameAnimation.Editor
{
    [CustomEditor(typeof(FrameClipPlayer))]
    public sealed class FrameClipPlayerEditor : UnityEditor.Editor
    {
        public override void OnInspectorGUI()
        {
            serializedObject.Update();
            EditorGUILayout.PropertyField(serializedObject.FindProperty("clip"));
            EditorGUILayout.PropertyField(serializedObject.FindProperty("playOnEnable"));
            EditorGUILayout.PropertyField(serializedObject.FindProperty("speed"));
            DrawWarnings();
            serializedObject.ApplyModifiedProperties();

            if (!Application.isPlaying) return;
            var player = (FrameClipPlayer)target;
            EditorGUILayout.Space();
            EditorGUILayout.LabelField("Runtime State", EditorStyles.boldLabel);
            using (new EditorGUI.DisabledScope(true))
            {
                EditorGUILayout.EnumPopup("State", player.State);
                EditorGUILayout.ObjectField("Clip", player.CurrentClip, typeof(FrameClip), false);
                EditorGUILayout.TextField("Clip ID", player.CurrentClipId);
                EditorGUILayout.IntField("Frame", player.CurrentFrameIndex);
            }
            Repaint();
        }

        private void DrawWarnings()
        {
            var player = (FrameClipPlayer)target;
            var renderer = player.GetComponent<SpriteRenderer>();
            var image = player.GetComponent<Image>();
            if (player.GetComponent<FrameAnimationPlayer>() != null)
                EditorGUILayout.HelpBox("同一 GameObject 不能同时包含 FrameAnimationPlayer 和 FrameClipPlayer。", MessageType.Error);
            if (renderer == null && image == null)
                EditorGUILayout.HelpBox("同一 GameObject 上必须存在一个 SpriteRenderer 或 Image。", MessageType.Error);
            else if (renderer != null && image != null)
                EditorGUILayout.HelpBox("同一 GameObject 不能同时存在 SpriteRenderer 和 Image。", MessageType.Error);
            if (serializedObject.FindProperty("clip").objectReferenceValue == null)
                EditorGUILayout.HelpBox("尚未绑定默认 FrameClip；仍可通过 Play(FrameClip) 临时播放。", MessageType.Info);
            var value = serializedObject.FindProperty("speed").floatValue;
            if (!FrameAnimationValueUtility.IsValidSpeed(value))
                EditorGUILayout.HelpBox("Speed 必须是有限且不小于 0 的数值。", MessageType.Error);
        }
    }
}