// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

package main

import (
	"errors"
	"testing"
	"time"

	"github.com/aws/aws-sdk-go/service/rds"
	"github.com/aws/aws-sdk-go/service/rds/rdsiface"
)

// Define a mock struct to use in unit tests
type mockRDSClient struct {
	rdsiface.RDSAPI
}

func (m *mockRDSClient) CreateDBClusterSnapshot(input *rds.CreateDBClusterSnapshotInput) (*rds.CreateDBClusterSnapshotOutput, error) {
	// Check that required inputs exist
	if input.DBClusterIdentifier == nil || *input.DBClusterIdentifier == "" {
		return nil, errors.New("The DBInstanceIdentifier argument is null or empty")
	}

	resp := rds.CreateDBClusterSnapshotOutput{}

	return &resp, nil
}

func TestCreateClusterSnapshot(t *testing.T) {
	thisTime := time.Now()
	nowString := thisTime.Format("2006-01-02 15:04:05 Monday")
	t.Log("Starting unit test at " + nowString)

	// mock resource
	clusterID := "test-cluster-1234"

	mockSvc := &mockRDSClient{}

	err := MakeClusterSnapshot(mockSvc, &clusterID)
	if err != nil {
		t.Fatal(err)
	}

	t.Log("Created cluster snapshot")
}
