/// <summary>
/// This version added VideoInteractions.
///
/// It introduced an "extra" directory where all the extra files are stored by a GUID.
/// Perspectives are no longer stored in meta.json.
/// </summary>
private static bool Upgrade1To2(MetaDataCompat meta, List <InteractionpointSerializeCompat> points)
{
//NOTE(Kristof): Check if we're indeed dealing with a version 1 json
if (meta.version != 1)
{
return(false);
}
//NOTE(Kristof): Set version to version 2
meta.version = 2;
//NOTE(Kristof): Create variables for directory paths
var projectDir = Path.Combine(Application.persistentDataPath, meta.guid.ToString());
var extraDir = Path.Combine(projectDir, SaveFile.extraPath);
//NOTE(Kristof): Dictionary is used to keep track of duplicate references to extras in the json
var newExtraDictionary = new Dictionary <string, string>();
Directory.CreateDirectory(extraDir);
//NOTE(Kristof): Iterate over all points and move extra files to the newly created "extra" directory. Files are renamed to a guid.
foreach (var point in points)
{
if (newExtraDictionary.ContainsKey(point.filename))
{
point.filename = newExtraDictionary[point.filename];
}
else if (!point.filename.Equals(""))
{
var newFilename = Path.Combine(SaveFile.extraPath, Editor.GenerateExtraGuid());
newExtraDictionary.Add(point.filename, newFilename);
#if !DEBUG_VERSION
File.Move(Path.Combine(projectDir, point.filename), Path.Combine(projectDir, newFilename));
#endif
point.filename = newFilename;
}
}
#if !DEBUG_VERSION
//NOTE(Kristof): Clean up leftover files
foreach (var file in Directory.GetFiles(projectDir, "extra*"))
{
File.Delete(file);
}
#endif
#if DEBUG_VERSION
return(false);
#else
return(true);
#endif
}
private static bool UpgradeSaveFile(MetaDataCompat meta, List <InteractionpointSerializeCompat> points, ref string json)
{
//NOTE(Kristof): Pass meta and points byref in case changes need to happen (meta.version gets upgraded every function if outdated)
var updated = Upgrade0To1(meta, points);
updated = Upgrade1To2(meta, points);
updated = Upgrade2To3(meta, points);
//NOTE(Kristof): Update json only if changes were made
if (updated)
{
json = WriteUpgraded(meta, points);
}
return(updated);
}
private static string WriteUpgraded(MetaDataCompat meta, List <InteractionpointSerializeCompat> points)
{
//NOTE(Kristof): Build and return the updated string
var sb = new StringBuilder();
sb.Append("version:")
.Append(meta.version)
.Append(",\n");
sb.Append("uuid:")
.Append(meta.guid)
.Append(",\n");
sb.Append("title:")
.Append(meta.title)
.Append(",\n");
sb.Append("description:")
.Append(meta.description)
.Append(",\n");
sb.Append("length:")
.Append(meta.length)
.Append(",\n");
sb.Append("[");
//NOTE(Kristof): Parse interactinpoints
if (points.Count > 0)
{
foreach (var point in points)
{
var updatedPoint = new InteractionPointLatest(point);
sb.Append(JsonUtility.ToJson(updatedPoint, true));
sb.Append(",");
}
sb.Remove(sb.Length - 1, 1);
sb.Append("]");
}
else
{
sb.Append("[]]");
}
return(sb.ToString());
}
/// <summary>
/// This version adds Multiplechoice Interaction
/// </summary>
private static bool Upgrade2To3(MetaDataCompat meta, List <InteractionpointSerializeCompat> points)
{
//NOTE(Kristof): Check if we're indeed dealing with a version 0 json
if (meta.version != 2)
{
return(false);
}
//NOTE(Kristof): Set version to version 1
meta.version = 3;
#if DEBUG_VERSION
return(false);
#else
return(true);
#endif
}
public static string CheckAndUpgradeVersion(string jsonString)
{
var metaCompat = new MetaDataCompat();
var pointList = new List <InteractionpointSerializeCompat>();
//NOTE(Kristof): First check if the json contains a version
if (!jsonString.StartsWith("version:"))
{
metaCompat.version = 0;
}
else
{
var result = SaveFile.JsonGetValueFromLine(jsonString, 0);
metaCompat.version = Convert.ToInt32(result.value);
if (metaCompat.version == VERSION)
{
return(jsonString);
}
}
//NOTE(Kristof): Build objects from json
{
var result = new SaveFile.ParsedJsonLine();
if (metaCompat.version > 0)
{
result = SaveFile.JsonGetValueFromLine(jsonString, result.endindex);
metaCompat.version = Convert.ToInt32(result.value);
}
result = SaveFile.JsonGetValueFromLine(jsonString, result.endindex);
metaCompat.guid = new Guid(result.value);
result = SaveFile.JsonGetValueFromLine(jsonString, result.endindex);
metaCompat.title = result.value;
result = SaveFile.JsonGetValueFromLine(jsonString, result.endindex);
metaCompat.description = result.value;
if (metaCompat.version < 2)
{
result = SaveFile.JsonGetValueFromLine(jsonString, result.endindex);
metaCompat.perspective = (Perspective)Enum.Parse(typeof(Perspective), result.value);
}
result = SaveFile.JsonGetValueFromLine(jsonString, result.endindex);
metaCompat.length = Convert.ToSingle(result.value, CultureInfo.InvariantCulture);
foreach (var obj in SaveFile.ParseInteractionPoints(jsonString, result.endindex))
{
pointList.Add(JsonUtility.FromJson <InteractionpointSerializeCompat>(obj));
}
}
//NOTE(Kristof): Json gets updated with changes if not latest version
isUpdated = UpgradeSaveFile(metaCompat, pointList, ref jsonString);
//NOTE(Kristof): Pass back json, with any potentional changes
return(jsonString);
}
public SaveFileDataCompat()
{
meta = new MetaDataCompat();
}