feat: initial cli implementation

src/StevanFreeborn.Extensions.Configuration.Secure.Cli/Commands/GetCommandFactory.cs

@@ -0,0 +1,80 @@
+using System.CommandLine;
+using System.Text.Json;
+
+using StevanFreeborn.Extensions.Configuration.Secure.Cli.Json;
+using StevanFreeborn.Extensions.Configuration.Secure.Configuration;
+
+namespace StevanFreeborn.Extensions.Configuration.Secure.Cli.Commands;
+
+internal sealed class GetCommandFactory(
+  ISecureConfig secureConfig,
+  ITerminal terminal
+) : ICommandFactory
+{
+  private const string CommandName = "get";
+  private const string CommandDescription = "Retrieves the value for the given key";
+
+  private readonly Argument<string> _keyArg = new("key")
+  {
+    Description = "The key whose value you want to retrieve."
+  };
+
+  private readonly Option<bool> _prettyOption = new("--pretty", "-p")
+  {
+    Description = "Indicates whether the value - if JSON - should be pretty printed or not"
+  };
+
+  private readonly ISecureConfig _secureConfig = secureConfig;
+  private readonly ITerminal _terminal = terminal;
+
+  public Command Create()
+  {
+    var command = new Command(CommandName, CommandDescription)
+    {
+      _keyArg,
+      _prettyOption
+    };
+
+    command.SetAction(HandleAsync);
+
+    return command;
+  }
+
+  private async Task<int> HandleAsync(ParseResult result, CancellationToken ct)
+  {
+    var key = result.GetRequiredValue(_keyArg);
+    var shouldPrintPretty = result.GetValue(_prettyOption);
+    var value = await _secureConfig.GetAsync<string>(key, ct);
+
+    if (value is null)
+    {
+      _terminal.WriteLine($"Unable to retrieve value for {key}");
+      return ExitCodes.KeyNotFound;
+    }
+
+    try
+    {
+      using var json = JsonDocument.Parse(value);
+
+      if (shouldPrintPretty)
+      {
+        var options = new JsonSerializerOptions()
+        {
+          WriteIndented = true,
+        };
+        var context = new CliJsonContext(options);
+        value = JsonSerializer.Serialize(json.RootElement, context.JsonElement);
+      }
+      else
+      {
+        value = JsonSerializer.Serialize(json.RootElement, CliJsonContext.Default.JsonElement);
+      }
+    }
+    catch (JsonException)
+    {
+    }
+
+    _terminal.WriteLine(value);
+    return ExitCodes.Success;
+  }
+}