using AibisDream.UI;
using UnityEditor;
using UnityEngine;

namespace AibisDream.UI.Editor
{
    [CustomEditor(typeof(DreamTerminalUI))]
    [CanEditMultipleObjects]
    internal sealed class DreamTerminalUIEditor : UnityEditor.Editor
    {
        void OnEnable()
        {
            EditorApplication.update += OnEditorUpdate;
            RefreshAllTargets();
        }

        void OnDisable()
        {
            EditorApplication.update -= OnEditorUpdate;
        }

        void OnEditorUpdate()
        {
            if (Application.isPlaying)
                return;

            RefreshAllTargets();
        }

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

            EditorGUI.BeginChangeCheck();
            DrawDefaultInspector();
            bool changed = EditorGUI.EndChangeCheck();

            serializedObject.ApplyModifiedProperties();

            if (changed)
                RefreshAllTargets();

            EditorGUILayout.Space();
            using (new EditorGUILayout.HorizontalScope())
            {
                if (GUILayout.Button("Preview / Frame Only"))
                    ApplyPreset(PreviewPreset.FrameOnly);

                if (GUILayout.Button("Preview / Waiting Input"))
                    ApplyPreset(PreviewPreset.WaitingInput);
            }

            if (GUILayout.Button("Preview / Clear"))
                ApplyPreset(PreviewPreset.Clear);
        }

        enum PreviewPreset
        {
            FrameOnly,
            WaitingInput,
            Clear
        }

        void ApplyPreset(PreviewPreset preset)
        {
            Undo.RecordObjects(targets, "Dream Terminal Preview Preset");

            foreach (Object o in targets)
            {
                var ui = (DreamTerminalUI)o;
                SerializedObject so = new SerializedObject(ui);

                switch (preset)
                {
                    case PreviewPreset.FrameOnly:
                        so.FindProperty("previewInEditor").boolValue = true;
                        so.FindProperty("previewStage").enumValueIndex = (int)DreamTerminalUI.PreviewStage.FrameOnly;
                        so.FindProperty("previewAlpha").floatValue = 1f;
                        so.FindProperty("previewMorphProgress").floatValue = 0.65f;
                        break;
                    case PreviewPreset.WaitingInput:
                        so.FindProperty("previewInEditor").boolValue = true;
                        so.FindProperty("previewStage").enumValueIndex = (int)DreamTerminalUI.PreviewStage.WaitingInput;
                        so.FindProperty("previewAlpha").floatValue = 1f;
                        so.FindProperty("previewMorphProgress").floatValue = 1f;
                        break;
                    case PreviewPreset.Clear:
                        so.FindProperty("previewInEditor").boolValue = false;
                        break;
                }

                so.ApplyModifiedProperties();
                ui.EditorRunPreviewTick();
            }
        }

        void RefreshAllTargets()
        {
            foreach (Object o in targets)
            {
                var ui = o as DreamTerminalUI;
                if (ui != null)
                    ui.EditorRunPreviewTick();
            }
        }
    }
}