msgexchange-v2/src/main/kotlin/com/gzzn/omms/msgexchange/domain/MsgEvent.kt

package com.gzzn.omms.msgexchange.domain

/**
 * ACMA-8 MSG_EVENT（统一投递事件 / outbox）。
 * TARGET 阶段化：KAFKA:msg、KAFKA:schd 自阶段 A；ES:flight_hts、REDIS:flightInfo 仅阶段 B 投影期。
 */
object Targets {
    const val KAFKA_MSG = "KAFKA:msg"
    const val KAFKA_SCHD = "KAFKA:schd"
    const val ES_FLIGHT_HTS = "ES:flight_hts"
    const val REDIS_FLIGHT_INFO = "REDIS:flightInfo"

    /** 阶段 A 投递目标（仅 Kafka）——I5：Delivery 阶段 A 不写 Redis。 */
    val phaseA: List<String> = listOf(KAFKA_MSG, KAFKA_SCHD)

    /** 阶段 B 追加投影目标。 */
    val phaseB: List<String> = phaseA + listOf(ES_FLIGHT_HTS, REDIS_FLIGHT_INFO)
}

enum class EventStatus { PENDING, SENT, DEAD }

data class MsgEvent(
    val eventId: Long? = null,
    val target: String,
    val partitionKey: String? = null,    // schd 事件恒为 FLID（v4 显式声明）
    val payloadJson: String,
    val state: EventStatus = EventStatus.PENDING,
    val attempts: Int = 0,
    val nextAttemptAt: java.time.Instant? = null,
    val errorClass: ErrorClass? = null,
    val lastError: String? = null,
    val createdAt: java.time.Instant = java.time.Instant.now(),
)