93 lines
3.2 KiB
C#
93 lines
3.2 KiB
C#
namespace Configuration
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{
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public sealed class ApplicationConfigurationService
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{
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private FileInfo[] jsonFiles;
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public FileInfo[] JsonFilesInfo
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{
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get { return jsonFiles; }
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private set
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{
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jsonFiles = value.Reverse().ToArray();
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}
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}
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private FileInfo outputFile;
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public FileInfo OutputFile{
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get {return outputFile;}
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private set
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{
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if (!canCreateFile(value.FullName))
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throw new DemoApplicationConfigurationException($"Given output name '{value.FullName}' cannot be used");
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outputFile = value;
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}
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}
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public static ApplicationConfigurationService InitializeFrom(string[] args)
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{
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if (args.Length < 3)
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throw new DemoApplicationConfigurationException("Must have atleast: 1 flag, 1 path, 1 output filename");
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var outputFileName = new FileInfo(args.Last());
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// Remove last file-name arg, to get a more consistent array
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var strippedArgs = args.SkipLast(1).ToArray();
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string[] givenFlags = strippedArgs.Where((value, index) => index % 2 == 0).ToArray();
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string[] givenFilePaths = strippedArgs.Where((value, index) => index % 2 != 0).ToArray();
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try
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{
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// Assert only a single 'd' was passed
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if ( givenFlags.Length == 1 && givenFlags[0].Equals("-d") ) {
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string[] filesInDirectory = Directory.GetFiles(givenFilePaths[0]);
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return new ApplicationConfigurationService {
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OutputFile = outputFileName,
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JsonFilesInfo = filesInDirectory.Select(name => new FileInfo(name)).ToArray(),
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};
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}
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// Assert only '-f' were passed
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else if (givenFlags.All((string flag) => flag.Equals("-f"))) {
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return new ApplicationConfigurationService {
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OutputFile = outputFileName,
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JsonFilesInfo = givenFilePaths.Select(name => new FileInfo(name)).ToArray(),
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};
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}
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else {
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throw new DemoApplicationConfigurationException("Must have either 1 flag that is '-d', or all flags must be '-f");
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}
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} catch (Exception)
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{
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Console.WriteLine("Something went wrong");
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throw;
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}
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}
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private static bool canCreateFile(string filename) {
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try
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{
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using (File.Create(filename)) {
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File.Delete(filename);
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return true;
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}
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}
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catch
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{
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return false;
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}
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}
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[Serializable]
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internal sealed class DemoApplicationConfigurationException : Exception
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{
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public DemoApplicationConfigurationException()
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{
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}
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public DemoApplicationConfigurationException(string? message) : base(message)
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{
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}
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}
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}
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} |