#if ADDRESSABLES_INSTALLED
using System.Collections.Generic;
using SubAssetsToolbox.Editor;
using UnityEditor.AddressableAssets;
using UnityEditor.AddressableAssets.Settings;
using UnityEngine;

namespace SubAssetsToolbox.Utilities
{
    internal static class AddressableEntryMigrator
    {
        internal static void MigrateOrRemoveEntry(string oldGuid, string parentGuid, string parentName)
        {
            AddressableAssetSettings settings = AddressableAssetSettingsDefaultObject.Settings;
            if (settings == null) return;

            AddressableAssetEntry oldEntry = settings.FindAssetEntry(oldGuid);
            if (oldEntry == null) return;
            
            string oldName = oldEntry.MainAsset != null ? oldEntry.MainAsset.name : oldGuid;
            string address = oldEntry.address;
            AddressableAssetGroup group = oldEntry.parentGroup;
            HashSet<string> labels = new(oldEntry.labels);

            AddressableAssetEntry parentEntry = settings.FindAssetEntry(parentGuid);

            if (parentEntry != null)
            {
                // New host asset was already an Addressable, so the new sub-asset
                // is now addressable thanks to its parent – and the old entry can be removed.
                settings.RemoveAssetEntry(oldGuid);
                Debug.Log(string.Format(Constants.AddressableEntryRemoved, oldName, address, parentName));
                return;
            }

            // The new host asset wasn't an Addressable, so the new host needs to become one
            settings.RemoveAssetEntry(oldGuid);
            AddressableAssetEntry newEntry = settings.CreateOrMoveEntry(parentGuid, group, false, false);
            newEntry.address = address;
            foreach (string label in labels)
                newEntry.SetLabel(label, true, true, false);
            settings.SetDirty(AddressableAssetSettings.ModificationEvent.EntryMoved, newEntry, true);

            Debug.Log(string.Format(Constants.AddressableEntryMigrated, oldName, address, parentName));
        }
    }
}
#endif