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// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
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package org.apache.cloudstack.backup;

import static org.junit.Assert.assertEquals;

import java.util.ArrayList;
import java.util.List;

import org.apache.cloudstack.backup.dao.BackupDao;
import org.apache.cloudstack.backup.veeam.VeeamClient;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.Spy;
import org.mockito.junit.MockitoJUnitRunner;

import com.cloud.utils.exception.CloudRuntimeException;
import com.cloud.vm.VMInstanceVO;
import com.cloud.vm.dao.VMInstanceDao;

@RunWith(MockitoJUnitRunner.class)
public class VeeamBackupProviderTest {
    @Spy
    @InjectMocks
    VeeamBackupProvider backupProvider = new VeeamBackupProvider();

    @Mock
    VeeamClient client;

    @Mock
    VMInstanceDao vmInstanceDao;

    @Mock
    BackupDao backupDao;

    @Test
    public void deleteBackupTestExceptionWhenVmIsNull() {
        BackupVO backup = new BackupVO();
        backup.setVmId(1l);
        backup.setExternalId("abc");
        Mockito.when(vmInstanceDao.findByIdIncludingRemoved(Mockito.anyLong())).thenReturn(null);
        try {
            backupProvider.deleteBackup(backup, false);
        } catch (Exception e) {
            assertEquals(CloudRuntimeException.class, e.getClass());
            String expected = String.format("Could not find any VM associated with the Backup [uuid: %s, name: null, externalId: %s].", backup.getUuid(), "abc");
            assertEquals(expected , e.getMessage());
        }
    }

    @Test
    public void deleteBackupTestExceptionWhenForcedIsFalse() {
        VMInstanceVO vmInstanceVO = new VMInstanceVO();
        BackupVO backup = new BackupVO();
        backup.setVmId(1l);
        backup.setExternalId("abc");
        Mockito.when(vmInstanceDao.findByIdIncludingRemoved(Mockito.anyLong())).thenReturn(vmInstanceVO);
        try {
            backupProvider.deleteBackup(backup, false);
        } catch (Exception e) {
            assertEquals(CloudRuntimeException.class, e.getClass());
            String expected = "Veeam backup provider does not have a safe way to remove a single restore point, which results in all backup chain being removed. "
                    + "Use forced:true to skip this verification and remove the complete backup chain.";
            assertEquals(expected , e.getMessage());
        }
    }

    @Test
    public void deleteBackupTestSuccessWhenForcedIsTrueAndHasJustOneBackup() {
        VMInstanceVO vmInstanceVO = new VMInstanceVO();
        vmInstanceVO.setInstanceName("test");
        vmInstanceVO.setDataCenterId(2l);
        BackupVO backup = new BackupVO();
        backup.setVmId(1l);
        backup.setExternalId("abc");
        backup.setType("Full");
        backup.setZoneId(3l);
        backup.setBackupOfferingId(4l);

        Mockito.when(vmInstanceDao.findByIdIncludingRemoved(Mockito.anyLong())).thenReturn(vmInstanceVO);
        Mockito.doReturn(client).when(backupProvider).getClient(2l);
        Mockito.doReturn(true).when(client).deleteBackup("abc");
        List<Backup> backups = new ArrayList<>();
        backups.add(backup);
        Mockito.when(backupDao.listByVmIdAndOffering(3l, 1l, 4l)).thenReturn(backups);
        Mockito.verify(backupDao, Mockito.never()).remove(Mockito.anyLong());
        boolean result = backupProvider.deleteBackup(backup, true);
        assertEquals(true, result);
    }

    @Test
    public void deleteBackupTestSuccessWhenForcedIsTrueAndHasMoreThanOneBackup() {
        VMInstanceVO vmInstanceVO = new VMInstanceVO();
        vmInstanceVO.setInstanceName("test");
        vmInstanceVO.setDataCenterId(2l);
        BackupVO backup = Mockito.mock(BackupVO.class);
        Mockito.when(backup.getId()).thenReturn(1l);
        Mockito.when(backup.getVmId()).thenReturn(1l);
        Mockito.when(backup.getExternalId()).thenReturn("abc");
        Mockito.when(backup.getZoneId()).thenReturn(3l);
        Mockito.when(backup.getBackupOfferingId()).thenReturn(4l);

        BackupVO backup2 = Mockito.mock(BackupVO.class);
        Mockito.when(backup2.getId()).thenReturn(2l);

        Mockito.when(vmInstanceDao.findByIdIncludingRemoved(Mockito.anyLong())).thenReturn(vmInstanceVO);
        Mockito.doReturn(client).when(backupProvider).getClient(2l);
        Mockito.doReturn(true).when(client).deleteBackup("abc");
        Mockito.when(backupDao.listByVmIdAndOffering(3l, 1l, 4l)).thenReturn(List.of(backup, backup2));
        boolean result = backupProvider.deleteBackup(backup, true);
        Mockito.verify(backupDao, Mockito.times(1)).remove(2l);
        assertEquals(true, result);
    }
}
