fix:feature-parity

macos/Sources/Transui/TranscriptionClient.swift

@@ -8,16 +8,42 @@ enum TranscriptionError: LocalizedError {
   case invalidEndpoint
   case invalidResponse
   case http(Int)
+  case allEndpointsFailed([String])
 
   var errorDescription: String? {
     switch self {
     case .invalidEndpoint: "The transcription endpoint is invalid."
     case .invalidResponse: "The server response did not contain a transcript."
     case .http(let status): "The server returned HTTP \(status)."
+    case .allEndpointsFailed(let failures): failures.joined(separator: " ")
     }
   }
 }
 
+struct TranscriptionEndpoint: Equatable {
+  let label: String
+  let endpoint: String
+  let model: String
+  let key: String
+
+  var isConfigured: Bool {
+    !endpoint.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty
+  }
+}
+
+struct TranscriptionPlan {
+  let hosted: TranscriptionEndpoint
+  let local: TranscriptionEndpoint
+  let hostedFirst: Bool
+
+  var endpoints: [TranscriptionEndpoint] {
+    var result: [TranscriptionEndpoint] = []
+    if hostedFirst, hosted.isConfigured { result.append(hosted) }
+    if local.isConfigured { result.append(local) }
+    return result
+  }
+}
+
 struct TranscriptionClient {
   static func endpointURL(from value: String) -> URL? {
     var endpoint = value.trimmingCharacters(in: .whitespacesAndNewlines)
@@ -34,6 +60,31 @@ struct TranscriptionClient {
   }
 
   func transcribe(
+    recording: URL,
+    plan: TranscriptionPlan,
+    prompt: String
+  ) async throws -> String {
+    let endpoints = plan.endpoints
+    guard !endpoints.isEmpty else { throw TranscriptionError.invalidEndpoint }
+
+    var failures: [String] = []
+    for endpoint in endpoints {
+      do {
+        return try await transcribe(
+          recording: recording,
+          endpoint: endpoint.endpoint,
+          model: endpoint.model,
+          key: endpoint.key,
+          prompt: prompt
+        )
+      } catch {
+        failures.append("\(endpoint.label): \(error.localizedDescription)")
+      }
+    }
+    throw TranscriptionError.allEndpointsFailed(failures)
+  }
+
+  private func transcribe(
     recording: URL,
     endpoint: String,
     model: String,