// ReSharper disable once ParameterTypeCanBeEnumerable.Global
public static JsonChanges Migrate(string oldJson, string fileName, IMhwMultiStructFile fileData) {
var changesToLoad = JsonConvert.DeserializeObject<JsonChanges>(oldJson);
if (changesToLoad.version == 1) MigrateV1ToV2(changesToLoad, fileName, fileData);
if (changesToLoad.version == 2) MigrateV2ToV3(changesToLoad, fileName, fileData);
if (changesToLoad.version != CURRENT_VERSION) throw new InvalidOperationException($"Unable to migrate json. Version still: {changesToLoad.version}");
changesToLoad.changesV1 = null;
return changesToLoad;
}
/**
* Migrates single-struct json to multi-struct json.
* Only works for single-struct files, but that shouldn't matter since only those supported json before this.
*/
private static void MigrateV2ToV3(JsonChanges changesToLoad, string fileName, IMhwMultiStructFile fileData) {
if (changesToLoad.changesV1 != null) {
var targetType = MainWindow.GetFileType(fileName);
if (targetType.Is(typeof(IShowAsSingleStruct))) {
var singleType = (IShowAsSingleStruct) Activator.CreateInstance(targetType);
var singleTypeName = singleType.GetSingleStructType().Name;
changesToLoad.changesV3 ??= new Dictionary<string, Dictionary<string, Dictionary<string, object>>>();
changesToLoad.changesV3[singleTypeName] = new Dictionary<string, Dictionary<string, object>>();
foreach (var change in changesToLoad.changesV1) {
changesToLoad.changesV3[singleTypeName].Add(change.Key, change.Value);
}
}
}
changesToLoad.changesV1 = null;
changesToLoad.version = 3;
}
/**
* Originally used `Set_Layered_Id` for armor which is always 0 for charms.
* This migrates that to `Set_Group` instead.
*/
private static void MigrateV1ToV2(JsonChanges changesToLoad, string fileName, IMhwMultiStructFile fileData) {
if (fileName == "armor.am_dat" && fileData is Armor armor) {
var newChanges = new Dictionary<string, Dictionary<string, object>>();
if (changesToLoad.changesV1 != null) {
foreach (var change in changesToLoad.changesV1) {
// Skip charms in v1 as the layered ID they use is always 0 an not usable.
if (change.Key.EndsWith("|Charm")) continue;
foreach (var item in armor.GetSingleStructList()) {
var v1UniqueId = $"{item.Set_Layered_Id}|{item.Variant}|{item.Type}|{item.Equip_Slot}";
if (change.Key == v1UniqueId) {
var newUniqueId = item.UniqueId;
newChanges[newUniqueId] = change.Value;
}
}
}
}
changesToLoad.changesV1 = newChanges;
}
changesToLoad.version = 2;
}