public void LoadData()
{
UI.SetStatus("Loading Data - First Time Check", 0, 2);
if (!ContentFile.Exists("nanaData")) //Checks for the existence of the nanaData file (Holds tag, group and media information)
{
UI.SetStatus("Loading Data - First Time Check", 1, 2); //If not, generate a new file
DataEncoder encoder = new DataEncoder(); //Initialise the encoding tool
encoder.Write(VersionMajor); //Setting the file version
encoder.Write(VersionMinor);
encoder.Write(0);
encoder.Write(0); //No tags, groups or media yet
encoder.Write(0);
UI.SetStatus("Loading Data - First Time Check", 2, 2);
ContentFile.WriteFile("nanaData", encoder.ToString()); //Write the data to a nanaData file
return; //As there is no non-default data, don't try to read any
}
UI.SetStatus("Loading Data - Loading Data", 0, 2);
DataDecoder decoder = new DataDecoder(ContentFile.ReadFile("nanaData")); //Initialise the decoding tool
UI.SetStatus("Loading Data - Checking Version", 1, 2);
//Versioning
int major = decoder.ReadInt32();
int minor = decoder.ReadInt32(); //Read the version number
UI.SetStatus("Loading Data - Checking Version", 2, 2);
if (major == VersionMajor && minor == VersionMinor) //Check if the version is the current version
{
UI.SetStatus("Loading Data - Fetching Data Quantity", 0, 3);
//Getting the amount of data to read (No eof for zip streams)
int groupCount = decoder.ReadInt32();
UI.SetStatus("Loading Data - Fetching Data Quantity", 1, 3);
int tagCount = decoder.ReadInt32();
UI.SetStatus("Loading Data - Fetching Data Quantity", 2, 3);
int imageCount = decoder.ReadInt32();
UI.SetStatus("Loading Data - Fetching Data Quantity", 3, 3);
double operations = groupCount + tagCount + imageCount; //How much data to read. Used to display progress
double progress = 0;
Data.TagLocations.Clear(); //Initialise default values (Mostly used in case data is loaded again)
Data.Groups.Clear();
Data.Tags = new Tag[tagCount];
Data.HiddenTags = new int[tagCount];
UI.SetStatus($"Loading Data - Getting Groups 0/{groupCount}", progress, operations);
//Begin reading group data
for (int i = 0; i < groupCount; i++)
{
Data.Groups[decoder.ReadInt32()] = decoder.ReadString(); //Groups are just names and an ID, so this can be limited to a single line
UI.SetStatus($"Loading Data - Getting Groups {i + 1}/{groupCount}", progress++, operations);
}
UI.SetStatus($"Loading Data - Getting Tags 0/{tagCount}", progress, operations);
int hiddenCount = 0;
//Begin reading tag data
for (int i = 0; i < tagCount; i++)
{
bool hidden = decoder.ReadBoolean(); //First data point is whether the tag is hidden or not
int index = decoder.ReadInt32(); //The ID index of the tag
Data.TagLocations.Add(index, i); //Links the tag's ID to its location
string name = decoder.ReadString(); //Get the name
int[] aliases = decoder.ReadInt32Array().ToArray(); //Read the linked IDs of this tag as an array
Data.Tags[i] = new Tag(name, index, decoder.ReadInt32(), aliases); //Last integer in the data is the group ID
if (hidden)
{
Data.HiddenTags[hiddenCount++] = index; //Adds the tag to the hidden tag list if the tag is a hidden tag
}
UI.SetStatus($"Loading Data - Getting Tags {i + 1}/{tagCount}", progress++, operations);
}
UI.SetStatus($"Loading Data - Getting Images 0/{imageCount}", progress, operations);
//Begin reading image data
for (int i = 0; i < imageCount; i++)
{
string uID = decoder.ReadString(); //Get the UID of the media (The key in the database)
string fileType = decoder.ReadString(); //Get the file extension of the media (For handling different data types)
int[] tags = decoder.ReadInt32Array().ToArray(); //Read the selected tags' IDs for the media as an array
Data.Media.Add(uID, (IMedia)Registry.MediaConstructors[Registry.ExtensionConstructors[fileType]].Invoke(new object[] { uID, tags, fileType })); //Gets which data type can represent the media, and constructs the object with the provided data
UI.SetStatus($"Loading Data - Getting Images {i + 1}/{imageCount}", progress++, operations);
}
}
else
{
//TODO - CODE TO DIVERT OR ERROR IF WRONG VERSION
}
}
