/**
 * Copyright (c) 2020 EmeraldPay, 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 io.emeraldpay.dshackle.test

import io.emeraldpay.dshackle.reader.Reader
import reactor.core.publisher.Mono

class ReaderMock<K, D> implements Reader<K, D> {

    private Map<K, D> mapping = new HashMap<K, D>()

    ReaderMock() {
    }

    ReaderMock with(K key, D data) {
        mapping[key] = data
        return this
    }

    @Override
    Mono<D> read(K key) {
        def value = mapping.get(key)
        if (value == null) {
            println("No mocked value for request: $key")
        }
        return Mono.justOrEmpty(value)
    }
}
