/*
Copyright (c) 2015 Red Hat, 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 org.ovirt.engine.sdk4.internal.services;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.net.URISyntaxException;
import java.util.Map;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.ByteArrayEntity;
import org.apache.http.util.EntityUtils;
import org.ovirt.api.metamodel.runtime.xml.XmlReader;
import org.ovirt.api.metamodel.runtime.xml.XmlWriter;
import org.ovirt.engine.sdk4.BaseRequest;
import org.ovirt.engine.sdk4.Error;
import org.ovirt.engine.sdk4.Service;
import org.ovirt.engine.sdk4.builders.ActionBuilder;
import org.ovirt.engine.sdk4.internal.HttpConnection;
import org.ovirt.engine.sdk4.internal.xml.XmlActionWriter;
import org.ovirt.engine.sdk4.internal.xml.XmlStorageDomainReader;
import org.ovirt.engine.sdk4.services.AttachedStorageDomainDisksService;
import org.ovirt.engine.sdk4.services.AttachedStorageDomainService;
import org.ovirt.engine.sdk4.types.Action;
import org.ovirt.engine.sdk4.types.StorageDomain;

public class AttachedStorageDomainServiceImpl extends ServiceImpl implements AttachedStorageDomainService {
    
    public AttachedStorageDomainServiceImpl(HttpConnection connection, String path) {
        super(connection, path);
    }
    
    private class ActivateRequestImpl extends BaseRequest<ActivateRequest, ActivateResponse> implements ActivateRequest {
        private Boolean async;
        public ActivateRequest async(Boolean async) {
            this.async = async;
            return this;
        }
        
        public ActivateResponse send() {
            HttpPost request = new HttpPost(getConnection().getUrl() + getPath() + "/activate");
            try (
              ByteArrayOutputStream output = new ByteArrayOutputStream();
              XmlWriter xmlWriter = new XmlWriter(output, true)
            ) {
                ActionBuilder action = new ActionBuilder();
                action.async(async);
                XmlActionWriter.writeOne(action.build(), xmlWriter);
                xmlWriter.flush();
                request.setEntity(new ByteArrayEntity(output.toByteArray()));
            }
            catch (IOException ex) {
                throw new Error("Failed to write request", ex);
            }
            
            if (headers != null) {
                for (Map.Entry<String, String> header : headers.entrySet()) {
                    request.setHeader(header.getKey(), header.getValue());
                }
            }
            
            HttpResponse response = getConnection().send(request);
            Action action = checkAction(response);
            EntityUtils.consumeQuietly(response.getEntity());
            return new ActivateResponseImpl();
        }
        
    }
    
    private class ActivateResponseImpl implements ActivateResponse {
    }
    
    public ActivateRequest activate() {
        return new ActivateRequestImpl();
    }
    
    private class DeactivateRequestImpl extends BaseRequest<DeactivateRequest, DeactivateResponse> implements DeactivateRequest {
        private Boolean async;
        public DeactivateRequest async(Boolean async) {
            this.async = async;
            return this;
        }
        
        private Boolean force;
        public DeactivateRequest force(Boolean force) {
            this.force = force;
            return this;
        }
        
        public DeactivateResponse send() {
            HttpPost request = new HttpPost(getConnection().getUrl() + getPath() + "/deactivate");
            try (
              ByteArrayOutputStream output = new ByteArrayOutputStream();
              XmlWriter xmlWriter = new XmlWriter(output, true)
            ) {
                ActionBuilder action = new ActionBuilder();
                action.async(async);
                action.force(force);
                XmlActionWriter.writeOne(action.build(), xmlWriter);
                xmlWriter.flush();
                request.setEntity(new ByteArrayEntity(output.toByteArray()));
            }
            catch (IOException ex) {
                throw new Error("Failed to write request", ex);
            }
            
            if (headers != null) {
                for (Map.Entry<String, String> header : headers.entrySet()) {
                    request.setHeader(header.getKey(), header.getValue());
                }
            }
            
            HttpResponse response = getConnection().send(request);
            Action action = checkAction(response);
            EntityUtils.consumeQuietly(response.getEntity());
            return new DeactivateResponseImpl();
        }
        
    }
    
    private class DeactivateResponseImpl implements DeactivateResponse {
    }
    
    public DeactivateRequest deactivate() {
        return new DeactivateRequestImpl();
    }
    
    private class GetRequestImpl extends BaseRequest<GetRequest, GetResponse> implements GetRequest {
        private String follow;
        public GetRequest follow(String follow) {
            this.follow = follow;
            return this;
        }
        
        public GetResponse send() {
            HttpGet request = null;
            try {
                URIBuilder uriBuilder = new URIBuilder(getConnection().getUrl() + getPath());
                if (follow != null) {
                    uriBuilder.addParameter("follow", XmlWriter.renderString(follow));
                }
                if (query != null) {
                    for (Map.Entry<String, String> queryParam : query.entrySet()) {
                        uriBuilder.addParameter(queryParam.getKey(), queryParam.getValue());
                    }
                }
                request = new HttpGet(uriBuilder.build());
            }
            catch (URISyntaxException ex) {
                throw new Error("Failed to build URL", ex);
            }
            
            if (headers != null) {
                for (Map.Entry<String, String> header : headers.entrySet()) {
                    request.setHeader(header.getKey(), header.getValue());
                }
            }
            
            HttpResponse response = getConnection().send(request);
            if (
              response.getStatusLine().getStatusCode() == 200
            ) {
                try (
                  XmlReader reader = new XmlReader(response.getEntity().getContent())
                ) {
                    return new GetResponseImpl(XmlStorageDomainReader.readOne(reader));
                }
                catch (IOException ex) {
                    throw new Error("Failed to read response", ex);
                }
                finally {
                    EntityUtils.consumeQuietly(response.getEntity());
                }
            }
            else {
                checkFault(response);
                return new GetResponseImpl(null);
            }
        }
        
    }
    
    private class GetResponseImpl implements GetResponse {
        private StorageDomain storageDomain;
        
        public GetResponseImpl(StorageDomain storageDomain) {
            this.storageDomain = storageDomain;
        }
        
        public StorageDomain storageDomain() {
            return storageDomain;
        }
        
    }
    
    public GetRequest get() {
        return new GetRequestImpl();
    }
    
    private class RemoveRequestImpl extends BaseRequest<RemoveRequest, RemoveResponse> implements RemoveRequest {
        private Boolean async;
        public RemoveRequest async(Boolean async) {
            this.async = async;
            return this;
        }
        
        public RemoveResponse send() {
            HttpDelete request = null;
            try {
                URIBuilder uriBuilder = new URIBuilder(getConnection().getUrl() + getPath());
                if (async != null) {
                    uriBuilder.addParameter("async", XmlWriter.renderBoolean(async));
                }
                if (query != null) {
                    for (Map.Entry<String, String> queryParam : query.entrySet()) {
                        uriBuilder.addParameter(queryParam.getKey(), queryParam.getValue());
                    }
                }
                request = new HttpDelete(uriBuilder.build());
            }
            catch (URISyntaxException ex) {
                throw new Error("Failed to build URL", ex);
            }
            
            if (headers != null) {
                for (Map.Entry<String, String> header : headers.entrySet()) {
                    request.setHeader(header.getKey(), header.getValue());
                }
            }
            
            HttpResponse response = getConnection().send(request);
            if (
              response.getStatusLine().getStatusCode() == 200
            ) {
                EntityUtils.consumeQuietly(response.getEntity());
                return new RemoveResponseImpl();
            }
            else {
                checkFault(response);
                return new RemoveResponseImpl();
            }
        }
        
    }
    
    private class RemoveResponseImpl implements RemoveResponse {
    }
    
    public RemoveRequest remove() {
        return new RemoveRequestImpl();
    }
    
    public AttachedStorageDomainDisksService disksService() {
        return new AttachedStorageDomainDisksServiceImpl(getConnection(), getPath() + "/disks");
    }
    
    public Service service(String path) {
        if (path == null) {
            return this;
        }
        
        if (path.equals("disks")) {
            return disksService();
        }
        if (path.startsWith("disks/")) {
            return disksService().service(path.substring(6));
        }
        throw new Error("The path " + path + " doesn't correspond to any service");
    }
    
    public String toString() {
        return "AttachedStorageDomainService:" + getPath();
    }
    
}

