/*
 * Copyright 2018 Intel Corporation, Inc
 *
 * Licensed 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, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package db

import (
	"context"

	"go.mongodb.org/mongo-driver/mongo"
	"go.mongodb.org/mongo-driver/mongo/options"
)

//Implements the functions used currently in mongo.go
type mockCollection struct {
	Err          error
	mCursor      *mongo.Cursor
	mCursorCount int
}

func (c *mockCollection) InsertOne(ctx context.Context, document interface{},
	opts ...*options.InsertOneOptions) (*mongo.InsertOneResult, error) {

	if c.Err != nil {
		return nil, c.Err
	}

	return &mongo.InsertOneResult{InsertedID: "_id1234"}, nil
}

func (c *mockCollection) FindOne(ctx context.Context, filter interface{},
	opts ...*options.FindOneOptions) *mongo.SingleResult {

	return &mongo.SingleResult{}
}

func (c *mockCollection) FindOneAndUpdate(ctx context.Context, filter interface{},
	update interface{}, opts ...*options.FindOneAndUpdateOptions) *mongo.SingleResult {

	return &mongo.SingleResult{}
}

func (c *mockCollection) DeleteOne(ctx context.Context, filter interface{},
	opts ...*options.DeleteOptions) (*mongo.DeleteResult, error) {

	return nil, c.Err
}

func (c *mockCollection) Find(ctx context.Context, filter interface{},
	opts ...*options.FindOptions) (*mongo.Cursor, error) {

	return c.mCursor, c.Err
}

func (c *mockCollection) DeleteMany(ctx context.Context, filter interface{},
	opts ...*options.DeleteOptions) (*mongo.DeleteResult, error) {
	return nil, c.Err
}

func (c *mockCollection) UpdateOne(ctx context.Context, filter interface{}, update interface{},
	opts ...*options.UpdateOptions) (*mongo.UpdateResult, error) {
	return nil, c.Err
}

func (c *mockCollection) CountDocuments(ctx context.Context, filter interface{},
	opts ...*options.CountOptions) (int64, error) {
	return 1, c.Err
}