package com.baiyue.common.web;

import com.baiyue.common.core.outbox.EventDeliveryJournal;
import com.baiyue.common.core.outbox.EventDeliveryProducer;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
import org.junit.jupiter.api.Test;
import org.springframework.boot.autoconfigure.AutoConfigurations;
import org.springframework.boot.test.context.runner.ApplicationContextRunner;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import static org.assertj.core.api.Assertions.*;

class EventDeliveryObservationAutoConfigurationTest {
    @Test void configuresMandatoryAuditAndMetricsForServiceLocalJdbc() {
        var jdbc = new JdbcTemplate(new DriverManagerDataSource("jdbc:h2:mem:auto", "sa", ""));
        new ApplicationContextRunner().withConfiguration(AutoConfigurations.of(EventDeliveryObservationAutoConfiguration.class))
            .withBean(EventDeliveryProducer.class, () -> new EventDeliveryProducer() { })
            .withBean(JdbcTemplate.class, () -> jdbc)
            .withBean(PlatformTransactionManager.class, () -> new DataSourceTransactionManager(jdbc.getDataSource()))
            .withBean(MeterRegistry.class, SimpleMeterRegistry::new)
            .run(context -> {
                assertThat(context).hasSingleBean(EventDeliveryJournal.class);
                assertThat(context).hasSingleBean(EventDeliveryMetrics.class);
            });
    }
    @Test void otherJdbcServicesDoNotAcquireTransactionOrMetricsRequirements() {
        new ApplicationContextRunner().withConfiguration(AutoConfigurations.of(EventDeliveryObservationAutoConfiguration.class))
            .withBean(JdbcTemplate.class, () -> new JdbcTemplate(new DriverManagerDataSource("jdbc:h2:mem:other", "sa", "")))
            .run(context -> {
                assertThat(context).hasNotFailed();
                assertThat(context).doesNotHaveBean(EventDeliveryJournal.class);
                assertThat(context).doesNotHaveBean(EventDeliveryMetrics.class);
            });
    }
    @Test void producerWithoutMeterRegistryFailsInsteadOfSilentlyDisablingObservation() {
        var jdbc = new JdbcTemplate(new DriverManagerDataSource("jdbc:h2:mem:noRegistry", "sa", ""));
        new ApplicationContextRunner().withConfiguration(AutoConfigurations.of(EventDeliveryObservationAutoConfiguration.class))
            .withBean(EventDeliveryProducer.class, () -> new EventDeliveryProducer() { })
            .withBean(JdbcTemplate.class, () -> jdbc)
            .withBean(PlatformTransactionManager.class, () -> new DataSourceTransactionManager(jdbc.getDataSource()))
            .run(context -> assertThat(context).hasFailed());
    }
    @Test void missingTransactionManagerFailsRatherThanInstallingNonTransactionalFallback() {
        new ApplicationContextRunner().withConfiguration(AutoConfigurations.of(EventDeliveryObservationAutoConfiguration.class))
            .withBean(EventDeliveryProducer.class, () -> new EventDeliveryProducer() { })
            .withBean(JdbcTemplate.class, () -> new JdbcTemplate(new DriverManagerDataSource("jdbc:h2:mem:missing", "sa", "")))
            .withBean(MeterRegistry.class, SimpleMeterRegistry::new)
            .run(context -> assertThat(context).hasFailed());
    }
}