Resource+Map.swift

//
//  Copyright (C) 2017 DB Systel GmbH.
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extension Resource {
    
    /// Maps a resource result to a different resource. This is useful when you have result of R which contains T and your API request a resource of T,
    ///
    /// - Parameter transform: transforms the original result of the resource
    /// - Returns: the transformed resource
    public func map<T>(transform: @escaping (Model) throws -> T) -> Resource<T> {
        return Resource<T>(request: request, parse: { data in
            return try transform(try self.parse(data))
        })
    }
}

extension ResourceWithError {

    /// Maps a resource result to a different resource. This is useful when you have result of R which contains T and your API request a resource of T,
    ///
    /// Error parsing is not changed
    ///
    /// - Parameter transform: transforms the original result of the resource
    /// - Returns: the transformed resource
    public func map<T>(transform: @escaping (Model) throws -> T) -> ResourceWithError<T, E> {
        return ResourceWithError<T, E>(
            request: request,
            parse: { data in
                return try transform(try self.parse(data))
            },
            mapError: mapError
        )
    }
}