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using System.Reflection;
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using System.Text;
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namespace Recyclarr.Common;
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public class ResourceDataReader : IResourceDataReader
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{
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private readonly Assembly _assembly;
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private readonly string? _namespace;
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private readonly string _subdirectory;
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public ResourceDataReader(Assembly assembly, string subdirectory = "")
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{
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_subdirectory = subdirectory;
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_assembly = assembly;
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}
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public ResourceDataReader(Type typeWithNamespaceToUse, string subdirectory = "")
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{
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_subdirectory = subdirectory;
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_namespace = typeWithNamespaceToUse.Namespace;
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_assembly = Assembly.GetAssembly(typeWithNamespaceToUse)
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?? throw new ArgumentException("Cannot get assembly from type", nameof(typeWithNamespaceToUse));
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}
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public string ReadData(string filename)
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{
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var resourcePath = BuildResourceName(filename);
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var foundResource = FindResourcePath(resourcePath);
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return GetResourceData(foundResource);
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}
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private string BuildResourceName(string filename)
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{
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var nameBuilder = new StringBuilder();
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if (!string.IsNullOrEmpty(_namespace))
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{
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nameBuilder.Append($"{_namespace}.");
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}
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if (!string.IsNullOrEmpty(_subdirectory))
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{
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nameBuilder.Append($"{_subdirectory}.");
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}
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nameBuilder.Append(filename);
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return nameBuilder.ToString();
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}
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private string FindResourcePath(string resourcePath)
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{
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var foundResource = Array.Find(_assembly.GetManifestResourceNames(), x => x.EndsWith(resourcePath));
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if (foundResource is null)
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{
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throw new ArgumentException($"Embedded resource not found: {resourcePath}");
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}
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return foundResource;
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}
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private string GetResourceData(string resourcePath)
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{
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using var stream = _assembly.GetManifestResourceStream(resourcePath);
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if (stream is null)
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{
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throw new ArgumentException($"Unable to open embedded resource: {resourcePath}");
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}
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using var reader = new StreamReader(stream);
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return reader.ReadToEnd();
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}
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}
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