package module

import (
  "fmt"
  "testing"

  "github.com/onap/multicloud-k8s/src/orchestrator/pkg/infra/db"
  "github.com/stretchr/testify/mock"
  "github.com/pkg/errors"

)

type mockValues struct {
  mock.Mock
}

func (m *mockValues) DBInsert(name string, key db.Key, query interface {}, meta string, c interface {}) error{
    fmt.Println("Mocked Insert operation in Mongo")
    args := m.Called(name, key, nil, meta, c)

    return args.Error(0)
}

func (m *mockValues) DBFind(name string, key db.Key, meta string) ([][]byte, error) {
    fmt.Println("Mocked Mongo DB Find Operation")
    args := m.Called(name, key, meta)

    return args.Get(0).([][]byte), args.Error(1)
}

func (m *mockValues) DBUnmarshal(value []byte, out interface{}) error {
    fmt.Println("Mocked Mongo DB Unmarshal Operation")
    args := m.Called(value)

    return args.Error(0)
}

func (m *mockValues) DBRemove(name string, key db.Key) error {
    fmt.Println("Mocked Mongo DB Remove operation")
    args := m.Called(name, key)

    return args.Error(0)
}

func (m *mockValues) CheckProject(project string) error {
    fmt.Println("Mocked Check Project exists")
    args := m.Called(project)

    return args.Error(0)
}

func (m *mockValues) CheckLogicalCloud(project, logicalCloud string) error {
    fmt.Println("Mocked Check Logical Cloud exists")
    args := m.Called(project, logicalCloud)

    return args.Error(0)
}

func TestCreateLogicalCloud(t *testing.T) {

    mData := MetaDataList{
        LogicalCloudName: "test_asdf",
    }

    lc := LogicalCloud {
        MetaData:   mData,
    }
    data1 := [][]byte{}

    key := LogicalCloudKey{
        Project:            "test_project",
        LogicalCloudName:   "test_asdf",
    }
    myMocks := new(mockValues)
    // just to get an error value
    err1 := errors.New("math: square root of negative number")

    myMocks.On("CheckProject", "test_project").Return(nil)
    myMocks.On("DBInsert", "test_dcm", key, nil, "test_meta", lc).Return(nil)
    myMocks.On("DBFind", "test_dcm", key, "test_meta").Return(data1, err1)

    lcClient := LogicalCloudClient{"test_dcm", "test_meta", myMocks}
    _, err := lcClient.Create("test_project", lc)
    if err != nil {
        t.Errorf("Some error occured!")
    }
}

func TestGetLogicalCloud(t *testing.T) {
    key := LogicalCloudKey{
        Project:            "test_project",
        LogicalCloudName:   "test_asdf",
    }

    data1 := [][]byte{
        []byte("abc"),
    }

    data2 := []byte("abc")

    myMocks := new(mockValues)

    myMocks.On("DBFind", "test_dcm", key, "test_meta").Return(data1, nil)
    myMocks.On("DBUnmarshal", data2).Return(nil)
    lcClient := LogicalCloudClient{"test_dcm", "test_meta", myMocks}
    _, err := lcClient.Get("test_project", "test_asdf")
    if err != nil {
        t.Errorf("Some error occured!")
    }
}

func TestDeleteLogicalCloud(t *testing.T) {

    key := LogicalCloudKey{
        Project:            "test_project",
        LogicalCloudName:   "test_asdf",
    }

    myMocks := new(mockValues)

    myMocks.On("DBRemove", "test_dcm", key).Return(nil)

    lcClient := LogicalCloudClient{"test_dcm", "test_meta", myMocks}
    err := lcClient.Delete("test_project", "test_asdf")
    if err != nil {
        t.Errorf("Some error occured!")
    }

}

func TestUpdateLogicalCloud(t *testing.T) {
    key := LogicalCloudKey{
        Project:            "test_project",
        LogicalCloudName:   "test_asdf",
    }
    mData := MetaDataList{
        LogicalCloudName: "test_asdf",
    }
    lc := LogicalCloud{
        MetaData: mData,
    }
    data1 := [][]byte{
        []byte("abc"),
    }
    data2 := []byte("abc")

    myMocks := new(mockValues)

    myMocks.On("DBInsert", "test_dcm", key, nil, "test_meta", lc).Return(nil)
    myMocks.On("DBFind", "test_dcm", key, "test_meta").Return(data1, nil)
    myMocks.On("DBUnmarshal", data2).Return(nil)
    lcClient := LogicalCloudClient{"test_dcm", "test_meta", myMocks}
    _, err := lcClient.Update("test_project", "test_asdf", lc)
    if err != nil {
        t.Errorf("Some error occured!")
    }
}