/*
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.math.BigInteger;
import java.net.URISyntaxException;
import java.util.List;
import java.util.Map;
import org.apache.http.HttpResponse;
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.CpuProfileBuilder;
import org.ovirt.engine.sdk4.internal.HttpConnection;
import org.ovirt.engine.sdk4.internal.xml.XmlCpuProfileReader;
import org.ovirt.engine.sdk4.internal.xml.XmlCpuProfileWriter;
import org.ovirt.engine.sdk4.services.AssignedCpuProfileService;
import org.ovirt.engine.sdk4.services.AssignedCpuProfilesService;
import org.ovirt.engine.sdk4.types.CpuProfile;

public class AssignedCpuProfilesServiceImpl extends ServiceImpl implements AssignedCpuProfilesService {
    
    public AssignedCpuProfilesServiceImpl(HttpConnection connection, String path) {
        super(connection, path);
    }
    
    private class AddRequestImpl extends BaseRequest<AddRequest, AddResponse> implements AddRequest {
        private CpuProfile profile;
        public AddRequest profile(CpuProfile profile) {
            this.profile = profile;
            return this;
        }
        
        public AddRequest profile(CpuProfileBuilder profile) {
            this.profile = profile.build();
            return this;
        }
        
        public AddResponse send() {
            HttpPost request = null;
            try {
                URIBuilder uriBuilder = new URIBuilder(getConnection().getUrl() + getPath());
                if (query != null) {
                    for (Map.Entry<String, String> queryParam : query.entrySet()) {
                        uriBuilder.addParameter(queryParam.getKey(), queryParam.getValue());
                    }
                }
                request = new HttpPost(uriBuilder.build());
            }
            catch (URISyntaxException ex) {
                throw new Error("Failed to build URL", ex);
            }
            try (
              ByteArrayOutputStream output = new ByteArrayOutputStream();
              XmlWriter xmlWriter = new XmlWriter(output, true)
            ) {
                XmlCpuProfileWriter.writeOne(profile, xmlWriter);
                xmlWriter.flush();
                request.setEntity(new ByteArrayEntity(output.toByteArray()));
            }
            catch (IOException ex) {
                throw new Error("Failed to parse response", 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
              || response.getStatusLine().getStatusCode() == 201
              || response.getStatusLine().getStatusCode() == 202
            ) {
                try (
                  XmlReader reader = new XmlReader(response.getEntity().getContent())
                ) {
                    return new AddResponseImpl(XmlCpuProfileReader.readOne(reader));
                }
                catch (IOException ex) {
                    throw new Error("Failed to read response", ex);
                }
                finally {
                    EntityUtils.consumeQuietly(response.getEntity());
                }
            }
            else {
                checkFault(response);
                return new AddResponseImpl(null);
            }
        }
        
    }
    
    private class AddResponseImpl implements AddResponse {
        private CpuProfile profile;
        
        public AddResponseImpl(CpuProfile profile) {
            this.profile = profile;
        }
        
        public CpuProfile profile() {
            return profile;
        }
        
    }
    
    public AddRequest add() {
        return new AddRequestImpl();
    }
    
    private class ListRequestImpl extends BaseRequest<ListRequest, ListResponse> implements ListRequest {
        private String follow;
        public ListRequest follow(String follow) {
            this.follow = follow;
            return this;
        }
        
        private BigInteger max;
        public ListRequest max(BigInteger max) {
            this.max = max;
            return this;
        }
        
        public ListRequest max(Integer max) {
            this.max = BigInteger.valueOf(max);
            return this;
        }
        
        public ListRequest max(Long max) {
            this.max = BigInteger.valueOf(max);
            return this;
        }
        
        public ListResponse send() {
            HttpGet request = null;
            try {
                URIBuilder uriBuilder = new URIBuilder(getConnection().getUrl() + getPath());
                if (follow != null) {
                    uriBuilder.addParameter("follow", XmlWriter.renderString(follow));
                }
                if (max != null) {
                    uriBuilder.addParameter("max", XmlWriter.renderInteger(max));
                }
                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 ListResponseImpl(XmlCpuProfileReader.readMany(reader));
                }
                catch (IOException ex) {
                    throw new Error("Failed to read response", ex);
                }
                finally {
                    EntityUtils.consumeQuietly(response.getEntity());
                }
            }
            else {
                checkFault(response);
                return new ListResponseImpl(null);
            }
        }
        
    }
    
    private class ListResponseImpl implements ListResponse {
        private List<CpuProfile> profiles;
        
        public ListResponseImpl(List<CpuProfile> profiles) {
            this.profiles = profiles;
        }
        
        public List<CpuProfile> profiles() {
            return profiles;
        }
        
    }
    
    public ListRequest list() {
        return new ListRequestImpl();
    }
    
    public AssignedCpuProfileService profileService(String id) {
        return new AssignedCpuProfileServiceImpl(getConnection(), getPath() + "/" + id);
    }
    
    public Service service(String path) {
        if (path == null) {
            return this;
        }
        
        int index = path.indexOf('/');
        if (index == -1) {
            return profileService(path);
        }
        return profileService(path.substring(0, index)).service(path.substring(index + 1));
    }
    
    public String toString() {
        return "AssignedCpuProfilesService:" + getPath();
    }
    
}

