82 lines
3.0 KiB
C#
82 lines
3.0 KiB
C#
using OSMDatastructure;
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namespace OSMImporter
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{
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public class RegionManager
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{
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private string workingDirectory { get; }
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private readonly Dictionary<ulong, Region> _regions = new();
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public RegionManager(string workingDirectory)
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{
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this.workingDirectory = workingDirectory;
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}
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/// <summary>
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/// Checks wether the Region is already loaded and returns the Region, or tries to load the Region from file in workingDirectory
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/// </summary>
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/// <param name="coordinates">Coordinates of the Region (or within the Region) to load</param>
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/// <returns>The Region at the specified Coordinates containing Nodes and Connections</returns>
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/// <exception cref="FileNotFoundException">If the Regionfile can not be found.</exception>
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public Region GetRegion(Coordinates coordinates)
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{
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if(this._regions.ContainsKey(coordinates.GetRegionHash()))
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return this._regions[coordinates.GetRegionHash()];
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else
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{
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Region loadedRegion = LoadRegion(coordinates);
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this._regions.Add(loadedRegion.regionHash, value: loadedRegion);
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return loadedRegion;
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}
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}
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public Region[] GetAllRegions()
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{
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return this._regions.Values.ToArray();
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="coordinates">Coordinates of the Region (or within the Region) to load</param>
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/// <returns>The Region at the specified Coordinates containing Nodes and Connections</returns>
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/// <exception cref="FileNotFoundException">If the Regionfile can not be found.</exception>
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private Region LoadRegion(Coordinates coordinates)
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{
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string fullPath = Path.Combine(workingDirectory, coordinates.GetRegionHash().ToString());
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Console.WriteLine("Loading {0}", fullPath);
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if (!File.Exists(fullPath))
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{
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throw new FileNotFoundException(string.Format("Region does not exist: {0}", fullPath));
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}
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FileStream fileStream = new FileStream(fullPath, FileMode.Open);
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byte[] regionBytes = new byte[fileStream.Length];
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int _ = fileStream.Read(regionBytes, 0, regionBytes.Length);
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fileStream.Close();
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return ByteConverter.ToRegion(regionBytes);
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}
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public Node? GetNode(ulong id)
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{
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foreach (Region region in this._regions.Values)
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{
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Node? node = region.GetNode(id);
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if (node != null)
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return node;
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}
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return null;
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}
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public Node? GetNode(Coordinates coordinates)
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{
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Region? regionWithNode = GetRegion(coordinates);
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if (regionWithNode == null)
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return null;//TODO null handling
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return regionWithNode.GetNode(coordinates);
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}
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}
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} |