package com.suno.android.common_networking.sse

/**
 * Represents events from a Server-Sent Events stream.
 */
sealed class SseEvent {
    /**
     * Connection successfully established.
     */
    data object Connected : SseEvent()

    /**
     * Connection closed (stream ended or timeout).
     */
    data object Disconnected : SseEvent()

    /**
     * Message received from SSE stream.
     *
     * @param data The accumulated data from all "data:" lines, joined with newlines
     * @param id The event ID from "id:" field, used for reconnection
     */
    data class Message(
        val data: String,
        val id: String? = null,
    ) : SseEvent()

    /**
     * Error occurred during connection or parsing.
     */
    data class Error(
        val throwable: Throwable,
    ) : SseEvent()
}