package net.onrc.onos.core.intent;

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

import net.onrc.onos.core.intent.ErrorIntent.ErrorType;
import net.onrc.onos.core.intent.Intent.IntentState;
import net.onrc.onos.core.intent.IntentMap.ChangedEventType;
import net.onrc.onos.core.intent.IntentOperation.Operator;
import net.onrc.onos.core.intent.runtime.IntentStateList;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;

/**
 * Unit tests for IntentMap class.
 */
public class IntentMapTest {

    @Before
    public void setUp() throws Exception {
    }

    @After
    public void tearDown() throws Exception {
    }

    @Test
    public void testCreate() {
        IntentMap intents = new IntentMap();
        assertEquals(0, intents.getAllIntents().size());
    }

    @Test
    public void testChangedEventCreate() {
        IntentMap.ChangedEvent event = new IntentMap.ChangedEvent(
                ChangedEventType.ADDED,
                new Intent("id1"));
        assertEquals(ChangedEventType.ADDED, event.eventType);
        assertEquals("id1", event.intent.getId());
    }

    @Test
    public void testAddOperations() {
        IntentMap intents = new IntentMap();
        assertEquals(0, intents.getAllIntents().size());

        Intent intent1 = new Intent("1");
        ShortestPathIntent intent2 =
                new ShortestPathIntent("2", 21L, 22L, 23L, 24L, 25L, 26L);
        ConstrainedShortestPathIntent intent3 =
                new ConstrainedShortestPathIntent("3", 31L, 32L, 33L, 34L, 35L, 36L, 1000.0);

        IntentOperationList operations = new IntentOperationList();
        operations.add(Operator.ADD, intent1);
        operations.add(Operator.ADD, intent2);
        operations.add(Operator.ADD, intent3);
        assertEquals(3, operations.size());

        intents.executeOperations(operations);
        assertEquals(3, intents.getAllIntents().size());
        assertSame(intent1, intents.getIntent("1"));
        assertSame(intent2, intents.getIntent("2"));
        assertSame(intent3, intents.getIntent("3"));
    }

    @Test
    public void testAddOperationsOverwrite() {
        IntentMap intents = new IntentMap();

        Intent intent1 = new Intent("1");
        Intent intent2 = new Intent("2");
        Intent intent3 = new Intent("3");
        Intent intent4 = new Intent("1");
        Intent intent5 = new Intent("2");
        Intent intent6 = new Intent("4");

        IntentOperationList operations = new IntentOperationList();
        operations.add(Operator.ADD, intent1);
        operations.add(Operator.ADD, intent2);
        operations.add(Operator.ADD, intent3);
        assertEquals(3, operations.size());

        intents.executeOperations(operations);
        assertEquals(3, intents.getAllIntents().size());
        assertSame(intent1, intents.getIntent("1"));
        assertSame(intent2, intents.getIntent("2"));
        assertSame(intent3, intents.getIntent("3"));

        operations.clear();
        operations.add(Operator.ADD, intent4);
        operations.add(Operator.ADD, intent5);
        operations.add(Operator.ADD, intent6);
        assertEquals(3, operations.size());

        intents.executeOperations(operations);
        assertEquals(4, intents.getAllIntents().size());
        assertSame(intent4, intents.getIntent("1"));
        assertSame(intent5, intents.getIntent("2"));
        assertSame(intent3, intents.getIntent("3"));
        assertSame(intent6, intents.getIntent("4"));
    }

    @Test
    public void testRemoveOperation() {
        IntentMap intents = new IntentMap();

        Intent intent1 = new Intent("1");
        ShortestPathIntent intent2 =
                new ShortestPathIntent("2", 21L, 22L, 23L, 24L, 25L, 26L);
        ConstrainedShortestPathIntent intent3 =
                new ConstrainedShortestPathIntent("3", 31L, 32L, 33L, 34L, 35L, 36L, 1000.0);

        IntentOperationList operations = new IntentOperationList();
        operations.add(Operator.ADD, intent1);
        operations.add(Operator.ADD, intent2);
        operations.add(Operator.ADD, intent3);
        intents.executeOperations(operations);
        assertEquals(3, intents.getAllIntents().size());
        assertSame(intent1, intents.getIntent("1"));
        assertSame(intent2, intents.getIntent("2"));
        assertSame(intent3, intents.getIntent("3"));

        operations.clear();
        operations.add(Operator.REMOVE, new Intent("1"));
        operations.add(Operator.REMOVE, new Intent("3"));
        intents.executeOperations(operations);
        assertEquals(3, intents.getAllIntents().size());
        assertSame(intent1, intents.getIntent("1"));
        assertSame(intent2, intents.getIntent("2"));
        assertSame(intent3, intents.getIntent("3"));
        assertEquals(IntentState.DEL_REQ, intents.getIntent("1").getState());
        assertEquals(IntentState.CREATED, intents.getIntent("2").getState());
        assertEquals(IntentState.DEL_REQ, intents.getIntent("3").getState());
    }

    @Test
    public void testErrorOperation() {
        IntentMap intents = new IntentMap();
        IntentOperationList operations = new IntentOperationList();
        operations.add(Operator.ADD, new Intent("1", IntentState.CREATED));
        operations.add(Operator.ADD, new Intent("2", IntentState.INST_REQ));
        operations.add(Operator.ADD, new Intent("3", IntentState.INST_ACK));
        operations.add(Operator.ADD, new Intent("4", IntentState.INST_NACK));
        operations.add(Operator.ADD, new Intent("5", IntentState.REROUTE_REQ));
        operations.add(Operator.ADD, new Intent("6", IntentState.DEL_REQ));
        operations.add(Operator.ADD, new Intent("7", IntentState.DEL_ACK));
        operations.add(Operator.ADD, new Intent("8", IntentState.DEL_PENDING));
        intents.executeOperations(operations);
        assertEquals(8, intents.getAllIntents().size());

        operations.clear();
        operations.add(Operator.ERROR, new ErrorIntent(ErrorType.PATH_NOT_FOUND, "", new Intent("1")));
        operations.add(Operator.ERROR, new ErrorIntent(ErrorType.PATH_NOT_FOUND, "", new Intent("2")));
        operations.add(Operator.ERROR, new ErrorIntent(ErrorType.PATH_NOT_FOUND, "", new Intent("3")));
        operations.add(Operator.ERROR, new ErrorIntent(ErrorType.PATH_NOT_FOUND, "", new Intent("4")));
        operations.add(Operator.ERROR, new ErrorIntent(ErrorType.PATH_NOT_FOUND, "", new Intent("5")));
        operations.add(Operator.ERROR, new ErrorIntent(ErrorType.PATH_NOT_FOUND, "", new Intent("6")));
        operations.add(Operator.ERROR, new ErrorIntent(ErrorType.PATH_NOT_FOUND, "", new Intent("7")));
        operations.add(Operator.ERROR, new ErrorIntent(ErrorType.PATH_NOT_FOUND, "", new Intent("8")));
        intents.executeOperations(operations);

        assertEquals(IntentState.INST_NACK, intents.getIntent("1").getState());
        assertEquals(IntentState.INST_NACK, intents.getIntent("2").getState());
        assertEquals(IntentState.INST_NACK, intents.getIntent("3").getState());
        assertEquals(IntentState.INST_NACK, intents.getIntent("4").getState());
        assertEquals(IntentState.INST_NACK, intents.getIntent("5").getState());
        assertEquals(IntentState.DEL_PENDING, intents.getIntent("6").getState());
        assertEquals(IntentState.DEL_ACK, intents.getIntent("7").getState());
        assertEquals(IntentState.DEL_PENDING, intents.getIntent("8").getState());
    }

    @Test
    public void testPurge() {
        IntentMap intents = new IntentMap();
        IntentOperationList operations = new IntentOperationList();
        operations.add(Operator.ADD, new Intent("1", IntentState.CREATED));
        operations.add(Operator.ADD, new Intent("2", IntentState.INST_REQ));
        operations.add(Operator.ADD, new Intent("3", IntentState.INST_ACK));
        operations.add(Operator.ADD, new Intent("4", IntentState.INST_NACK));
        operations.add(Operator.ADD, new Intent("5", IntentState.REROUTE_REQ));
        operations.add(Operator.ADD, new Intent("6", IntentState.DEL_REQ));
        operations.add(Operator.ADD, new Intent("7", IntentState.DEL_ACK));
        operations.add(Operator.ADD, new Intent("8", IntentState.DEL_PENDING));
        intents.executeOperations(operations);
        assertEquals(8, intents.getAllIntents().size());

        intents.purge();

        assertEquals(6, intents.getAllIntents().size());
        assertEquals("1", intents.getIntent("1").getId());
        assertEquals("2", intents.getIntent("2").getId());
        assertEquals("3", intents.getIntent("3").getId());
        assertNull(intents.getIntent("4"));
        assertEquals("5", intents.getIntent("5").getId());
        assertEquals("6", intents.getIntent("6").getId());
        assertNull("7", intents.getIntent("7"));
        assertEquals("8", intents.getIntent("8").getId());
    }

    @Test
    public void testChangeStates() {
        IntentMap intents = new IntentMap();
        IntentOperationList operations = new IntentOperationList();
        operations.add(Operator.ADD, new Intent("1", IntentState.CREATED));
        operations.add(Operator.ADD, new Intent("2", IntentState.INST_REQ));
        operations.add(Operator.ADD, new Intent("3", IntentState.INST_ACK));
        operations.add(Operator.ADD, new Intent("4", IntentState.INST_NACK));
        operations.add(Operator.ADD, new Intent("5", IntentState.REROUTE_REQ));
        operations.add(Operator.ADD, new Intent("6", IntentState.DEL_REQ));
        operations.add(Operator.ADD, new Intent("7", IntentState.DEL_ACK));
        operations.add(Operator.ADD, new Intent("8", IntentState.DEL_PENDING));
        intents.executeOperations(operations);
        assertEquals(8, intents.getAllIntents().size());

        IntentStateList states = new IntentStateList();
        states.put("8", IntentState.CREATED);
        states.put("1", IntentState.INST_REQ);
        states.put("2", IntentState.INST_ACK);
        states.put("3", IntentState.INST_NACK);
        states.put("4", IntentState.REROUTE_REQ);
        states.put("5", IntentState.DEL_REQ);
        states.put("6", IntentState.DEL_ACK);
        states.put("7", IntentState.DEL_PENDING);
        intents.changeStates(states);

        assertEquals(IntentState.INST_REQ, intents.getIntent("1").getState());
        assertEquals(IntentState.INST_ACK, intents.getIntent("2").getState());
        assertEquals(IntentState.INST_NACK, intents.getIntent("3").getState());
        assertEquals(IntentState.REROUTE_REQ, intents.getIntent("4").getState());
        assertEquals(IntentState.DEL_REQ, intents.getIntent("5").getState());
        assertEquals(IntentState.DEL_ACK, intents.getIntent("6").getState());
        assertEquals(IntentState.DEL_PENDING, intents.getIntent("7").getState());
        assertEquals(IntentState.CREATED, intents.getIntent("8").getState());
    }
}