/*-
 * ========================LICENSE_START=================================
 * O-RAN-SC
 * %%
 * Copyright (C) 2019 Nordix Foundation
 * %%
 * 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.
 * ========================LICENSE_END===================================
 */

package org.oransc.policyagent.utils;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Vector;

import org.oransc.policyagent.clients.A1Client;
import org.oransc.policyagent.repository.Policies;
import org.oransc.policyagent.repository.Policy;
import org.oransc.policyagent.repository.PolicyType;
import org.oransc.policyagent.repository.PolicyTypes;
import reactor.core.publisher.Mono;

public class MockA1Client implements A1Client {
    private final Map<String, Policies> policies = new HashMap<>();
    private final PolicyTypes policyTypes;

    public MockA1Client(PolicyTypes policyTypes) {
        this.policyTypes = policyTypes;
    }

    @Override
    public Mono<Collection<String>> getPolicyTypeIdentities(String nearRtRicUrl) {
        synchronized (this.policyTypes) {
            Vector<String> result = new Vector<>();
            for (PolicyType p : this.policyTypes.getAll()) {
                result.add(p.name());
            }
            return Mono.just(result);
        }
    }

    @Override
    public Mono<Collection<String>> getPolicyIdentities(String nearRtRicUrl) {
        synchronized (this.policies) {
            Vector<String> result = new Vector<>();
            for (Policy policy : getPolicies(nearRtRicUrl).getAll()) {
                if (policy.ric().getConfig().baseUrl().equals(nearRtRicUrl)) {
                    result.add(policy.id());
                }
            }

            return Mono.just(result);
        }
    }

    @Override
    public Mono<String> getPolicyType(String nearRtRicUrl, String policyTypeId) {
        try {
            return Mono.just(this.policyTypes.getType(policyTypeId).schema());
        } catch (Exception e) {
            return Mono.error(e);
        }
    }

    @Override
    public Mono<String> putPolicy(Policy p) {
        getPolicies(p.ric().getConfig().baseUrl()).put(p);
        return Mono.just("OK");
    }

    @Override
    public Mono<String> deletePolicy(String nearRtRicUrl, String policyId) {
        getPolicies(nearRtRicUrl).removeId(policyId);
        return Mono.just("OK");
    }

    private Policies getPolicies(String url) {
        if (!policies.containsKey(url)) {
            policies.put(url, new Policies());
        }
        return policies.get(url);
    }

}