using System.Collections.Generic;
using UnityEditor;
using UnityEditor.AddressableAssets;
using UnityEngine;

public static class AddressableAssetsUtil {

    // サブエントリをルートへ展開して空になったフォルダを削除
    [UnityEditor.MenuItem ("Assets/Addressables/MoveSubEntryToRoot")]
    public static void MoveSubEntryToRoot () {
        var entriesCount = 0;
        var assetsCount = 0;
        var settings = AddressableAssetSettingsDefaultObject.Settings;
        var entries = new List<UnityEditor.AddressableAssets.Settings.AddressableAssetEntry>  (settings.DefaultGroup.entries);
        var assets = new List<UnityEditor.AddressableAssets.Settings.AddressableAssetEntry> { };
        foreach (var entry in entries) {
            entry.GatherAllAssets (assets, false, true, true);
            if (assets.Count > 0 && entry.MainAsset.GetType () == typeof (UnityEditor.DefaultAsset)) {
                entriesCount++;
                Debug.Log ($"MoveSubEntryToRoot: entry {entriesCount}: {entry.address}");
                foreach (var asset in assets) {
                    assetsCount++;
                    Debug.Log ($"MoveSubEntryToRoot: asset {assetsCount}: {asset.address}");
                    settings.MoveEntry (asset, entry.parentGroup);
                    if (asset.address.StartsWith ("Assets/")) {
                        asset.address = asset.address.Remove (0, 7);
                    }
                }
                assets.Clear ();
                settings.RemoveAssetEntry (entry.guid);
            }
        }
        AssetDatabase.Refresh (); // アセットを更新
        Debug.Log ($"MoveSubEntryToRoot: done (entries: {entriesCount}, assets: {assetsCount})");
    }

}