package com.gzzn.omms.msgexchange.ingress

import com.gzzn.omms.msgexchange.domain.ProcStatus
import com.gzzn.omms.msgexchange.infra.stub.StubInbox
import com.gzzn.omms.msgexchange.infra.stub.StubProcState
import com.gzzn.omms.msgexchange.processing.Pump
import io.micronaut.test.extensions.junit5.annotation.MicronautTest
import jakarta.inject.Inject
import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.Assertions.assertNotNull
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Test

/** 主路径：JDBC 轮询语义（stub 下 InboxPoller + 外部写信箱模拟）。 */
@MicronautTest
class InboxPollerTest {

    @Inject lateinit var poller: InboxPoller
    @Inject lateinit var pump: Pump
    @Inject lateinit var stubInbox: StubInbox
    @Inject lateinit var stubProc: StubProcState

    @BeforeEach
    fun clean() {
        stubInbox.clear()
        stubProc.clear()
    }

    @Test
    fun `poller enqueues externally written mailbox rows`() {
        val id = stubInbox.simulateExternalWrite("<MSG/>")
        assertEquals(1, poller.pollOnce())
        assertNotNull(stubProc.snapshotOf(id))
        assertEquals(ProcStatus.PENDING, stubProc.snapshotOf(id)!!.state)
    }

    @Test
    fun `poller is idempotent for already enqueued rows`() {
        val id = stubInbox.simulateExternalWrite("<MSG/>")
        poller.pollOnce()
        assertEquals(0, poller.pollOnce())
        pump.tick()
        assertEquals(ProcStatus.FAILED, stubProc.snapshotOf(id)!!.state)
    }
}