Create CommonErrors module.

ReaderAPI/Sources/ReaderAPI/ReaderAPIError.swift

@@ -0,0 +1,29 @@
+//
+//  ReaderAPIError.swift
+//  
+//
+//  Created by Brent Simmons on 4/6/24.
+//
+
+import Foundation
+
+public enum ReaderAPIError: LocalizedError {
+
+	case unknown
+	case invalidParameter
+	case invalidResponse
+	case urlNotFound
+
+	public var errorDescription: String? {
+		switch self {
+		case .unknown:
+			return NSLocalizedString("An unexpected error occurred.", comment: "An unexpected error occurred.")
+		case .invalidParameter:
+			return NSLocalizedString("An invalid parameter was passed.", comment: "An invalid parameter was passed.")
+		case .invalidResponse:
+			return NSLocalizedString("There was an invalid response from the server.", comment: "There was an invalid response from the server.")
+		case .urlNotFound:
+			return NSLocalizedString("The API URL wasn't found.", comment: "The API URL wasn't found.")
+		}
+	}
+}