feat: Adds generate-config as json file.

Sources/CliClient/CliClient.swift

@@ -16,7 +16,7 @@ public struct CliClient: Sendable {
   public var encoder: @Sendable () -> JSONEncoder = { .init() }
   public var loadConfiguration: @Sendable () throws -> Configuration
   public var runCommand: @Sendable ([String], Bool, ShellCommand.Shell) async throws -> Void
-  public var createConfiguration: @Sendable (String) throws -> Void
+  public var createConfiguration: @Sendable (_ path: String, _ json: Bool) throws -> Void
 
   public func runCommand(
     quiet: Bool,
@@ -50,16 +50,14 @@ extension CliClient: DependencyKey {
     } encoder: {
       encoder
     } loadConfiguration: {
-      let urls = try findConfigurationFiles(env: env)
+      let url = try findConfigurationFiles(env: env)
       var env = env
 
-      logger.trace("Loading configuration from: \(urls)")
-
-      for url in urls {
-        try fileClient.loadFile(url, &env, decoder)
-      }
+      logger.trace("Loading configuration from: \(url)")
+      try fileClient.loadFile(url, &env, decoder)
 
       return try .fromEnv(env, encoder: encoder, decoder: decoder)
+
     } runCommand: { args, quiet, shell in
       @Dependency(\.asyncShellClient) var shellClient
       if !quiet {
@@ -76,8 +74,27 @@ extension CliClient: DependencyKey {
         in: nil,
         args
       ))
-    } createConfiguration: { path in
-      try fileClient.write(path, Data(Configuration.fileTemplate.utf8))
+    } createConfiguration: { path, json in
+
+      // Early out if a file exists at the path already.
+      guard !fileClient.fileExists(path) else {
+        throw CliClientError.fileExistsAtPath(path)
+      }
+
+      var path = path
+      let data: Data
+
+      if !json {
+        // Write the default env template.
+        data = Data(Configuration.fileTemplate.utf8)
+      } else {
+        if !path.contains(".json") {
+          path += ".json"
+        }
+        data = try jsonEncoder.encode(Configuration.mock)
+      }
+
+      try fileClient.write(path, data)
     }
   }
 
@@ -87,3 +104,13 @@ extension CliClient: DependencyKey {
 
   public static let testValue: CliClient = Self()
 }
+
+enum CliClientError: Error {
+  case fileExistsAtPath(String)
+}
+
+private let jsonEncoder: JSONEncoder = {
+  var encoder = JSONEncoder()
+  encoder.outputFormatting = [.prettyPrinted, .withoutEscapingSlashes]
+  return encoder
+}()