package com.aerotoss.model

enum class TransferState {
    PENDING,
    TRANSFERRING,
    COMPLETED,
    FAILED,
    CANCELLED
}

data class TransferProgress(
    val id: String,
    val request: TransferRequest,
    val bytesTransferred: Long,
    val totalBytes: Long,
    val state: TransferState,
    val startTimeMs: Long = System.currentTimeMillis(),
    val error: String? = null
) {
    val progress: Float
        get() = if (totalBytes > 0) bytesTransferred.toFloat() / totalBytes else 0f

    val isComplete: Boolean
        get() = state == TransferState.COMPLETED

    val speed: Long
        get() {
            if (state != TransferState.TRANSFERRING || bytesTransferred == 0L) return 0L
            val elapsed = (System.currentTimeMillis() - startTimeMs).coerceAtLeast(1)
            return bytesTransferred * 1000 / elapsed
        }

    val elapsedMs: Long
        get() = System.currentTimeMillis() - startTimeMs
}