package jnpf.limsService.impl;

import jnpf.lims.api.model.TestWorkItemSnapshotActorRequest;
import jnpf.lims.api.model.TestWorkItemSnapshotBatch;
import jnpf.lims.api.model.TestWorkItemSnapshotRequest;
import jnpf.limsService.LimsTestWorkItemSnapshotService;
import org.junit.Test;

import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.fail;

public class LimsTestWorkItemActorSnapshotServiceImplTest {

    @Test
    public void switchesToActorTenantAndAlwaysClearsTheRoute() {
        AtomicReference<String> switched = new AtomicReference<>();
        AtomicReference<String> resolvedTenant = new AtomicReference<>();
        AtomicReference<String> resolvedUser = new AtomicReference<>();
        AtomicInteger cleared = new AtomicInteger();
        TestWorkItemSnapshotBatch expected = new TestWorkItemSnapshotBatch();
        LimsTestWorkItemSnapshotService snapshots = (request, tenantId, userId) -> {
            resolvedTenant.set(tenantId);
            resolvedUser.set(userId);
            return expected;
        };
        LimsTestWorkItemActorSnapshotServiceImpl service =
                new LimsTestWorkItemActorSnapshotServiceImpl(snapshots,
                        new LimsTestWorkItemActorSnapshotServiceImpl.TenantRoute() {
                            @Override public void switchTo(String tenantId) { switched.set(tenantId); }
                            @Override public void clear() { cleared.incrementAndGet(); }
                        });

        assertSame(expected, service.resolve(actor()));
        assertEquals("tenant-a", switched.get());
        assertEquals("tenant-a", resolvedTenant.get());
        assertEquals("user-a", resolvedUser.get());
        assertEquals(1, cleared.get());
    }

    @Test
    public void routeFailureFailsClosedAndStillClears() {
        AtomicInteger cleared = new AtomicInteger();
        LimsTestWorkItemActorSnapshotServiceImpl service =
                new LimsTestWorkItemActorSnapshotServiceImpl(
                        (request, tenantId, userId) -> new TestWorkItemSnapshotBatch(),
                        new LimsTestWorkItemActorSnapshotServiceImpl.TenantRoute() {
                            @Override public void switchTo(String tenantId) {
                                throw new IllegalStateException("route failed");
                            }
                            @Override public void clear() { cleared.incrementAndGet(); }
                        });

        try {
            service.resolve(actor());
            fail("tenant switch failure must fail closed");
        } catch (IllegalStateException expected) {
            assertEquals("route failed", expected.getMessage());
        }
        assertEquals(1, cleared.get());
    }

    private static TestWorkItemSnapshotActorRequest actor() {
        TestWorkItemSnapshotActorRequest actor = new TestWorkItemSnapshotActorRequest();
        actor.setTenantId("tenant-a");
        actor.setUserId("user-a");
        actor.setRequest(new TestWorkItemSnapshotRequest());
        return actor;
    }
}