book.go

type Book struct {

	Title string
	Author string
	ISBN string
	Genre string
	Id string
}

// Creates an account and adds it to the Database
func CreateBook(book *Book) bool {

	// Dial up a mongoDB session
	session, err := mgo.Dial("127.0.0.1:27017/")
	if err != nil {
		fmt.Println(err)
		return false
	}

	// Opens the "library" databases, "books" collection
	c := session.DB("library").C("books")
	result := Book{}

	// Search for the bookID, place in result.Id
	err = c.Find(bson.M{"id": book.Id}).One(&result)

	if result.Id != "" {
		// return true because book is present in the database
		// and we can say, "it's been added" without causing errors
		return true
	}

	// insert the book if it is not already in the database
	err = c.Insert(*book)

	if err != nil {
		return false
	}
        
        // Close session to save resources
	session.Close()

	return true
}