/*
 * Copyright OpenSearch Contributors
 * SPDX-License-Identifier: Apache-2.0
 */

package org.opensearch.indexmanagement.indexstatemanagement.validation

import org.opensearch.indexmanagement.indexstatemanagement.IndexStateManagementRestTestCase
import org.opensearch.indexmanagement.indexstatemanagement.model.Conditions
import org.opensearch.indexmanagement.indexstatemanagement.model.Policy
import org.opensearch.indexmanagement.indexstatemanagement.model.State
import org.opensearch.indexmanagement.indexstatemanagement.model.Transition
import org.opensearch.indexmanagement.indexstatemanagement.randomErrorNotification
import org.opensearch.indexmanagement.spi.indexstatemanagement.Validate
import org.opensearch.indexmanagement.waitFor
import java.time.Instant
import java.time.temporal.ChronoUnit
import java.util.Locale

class ValidateTransitionIT : IndexStateManagementRestTestCase() {

    private val testIndexName = javaClass.simpleName.lowercase(Locale.ROOT)

    fun `test transition validation with doc count condition`() {
        enableValidationService()
        val indexName = "${testIndexName}_index_1"
        val policyID = "${testIndexName}_testPolicyName_1"
        val secondStateName = "second"
        val states = listOf(
            State("first", listOf(), listOf(Transition(secondStateName, Conditions(docCount = 5L)))),
            State(secondStateName, listOf(), listOf())
        )

        val policy = Policy(
            id = policyID,
            description = "$testIndexName description",
            schemaVersion = 1L,
            lastUpdatedTime = Instant.now().truncatedTo(ChronoUnit.MILLIS),
            errorNotification = randomErrorNotification(),
            defaultState = states[0].name,
            states = states
        )

        createPolicy(policy, policyID)
        createIndex(indexName, policyID)

        val managedIndexConfig = getExistingManagedIndexConfig(indexName)

        // Initializing the policy/metadata
        updateManagedIndexConfigStartTime(managedIndexConfig)

        waitFor { assertEquals(policyID, getExplainManagedIndexMetaData(indexName).policyID) }

        // Add 6 documents (>5)
        insertSampleData(indexName, 6)

        // Evaluating transition conditions for second time
        updateManagedIndexConfigStartTime(managedIndexConfig)

        waitFor {
            val data = getExplainValidationResult(indexName)
            assertEquals(
                "Index transition validation status is PASSED.",
                Validate.ValidationStatus.PASSED,
                data.validationStatus
            )
        }
    }
}