import Foundation

/// Protocol all upload backends conform to.
public protocol FeedUploader: Sendable {
    /// Uploads the full updated `social.org` content to the remote host.
    func upload(content: String) async throws
}

public enum UploadError: Error, Sendable {
    case uploadFailed(statusCode: Int)
    case networkError(underlying: String)
    case invalidConfiguration(String)
    case fileNotFound
}

extension UploadError: LocalizedError {
    public var errorDescription: String? {
        switch self {
        case .uploadFailed(let code):   return "Upload failed with HTTP \(code)."
        case .networkError(let msg):    return "Network error: \(msg)"
        case .invalidConfiguration(let msg): return "Upload not configured: \(msg)"
        case .fileNotFound:             return "Remote file not found."
        }
    }
}

public enum UploadMethod: String, CaseIterable, Sendable {
    case vfile
    case github
    case codeberg
    case webdav
}