import Foundation

struct BackupQueueItem: Identifiable, Codable, Sendable {
    let id: String          // = asset localIdentifier
    var filename: String
    var nasPath: String
    var status: Status
    var bytesUploaded: Int64
    var totalBytes: Int64
    var speedBytesPerSec: Double
    var error: UploadError?
    var retryCount: Int
    var queuedAt: Date
    var completedAt: Date?

    enum Status: String, Codable, Sendable {
        case queued, uploading, uploaded, skipped, failed
    }

    struct UploadError: Codable, Sendable {
        var code: String
        var message: String
        var timestamp: Date
    }

    var progress: Double {
        guard totalBytes > 0 else {
            return (status == .uploaded || status == .skipped) ? 1.0 : 0.0
        }
        return min(1.0, Double(bytesUploaded) / Double(totalBytes))
    }

    var isFinished: Bool { status == .uploaded || status == .skipped || status == .failed }
}