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/*
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 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.Error;
import org.ovirt.engine.sdk4.Service;
import org.ovirt.engine.sdk4.builders.TemplateBuilder;
import org.ovirt.engine.sdk4.internal.HttpConnection;
import org.ovirt.engine.sdk4.internal.xml.XmlTemplateReader;
import org.ovirt.engine.sdk4.internal.xml.XmlTemplateWriter;
import org.ovirt.engine.sdk4.services.TemplateService;
import org.ovirt.engine.sdk4.services.TemplatesService;
import org.ovirt.engine.sdk4.types.Template;

public class TemplatesServiceImpl extends ServiceImpl implements TemplatesService {
    
    public TemplatesServiceImpl(HttpConnection connection, String path) {
        super(connection, path);
    }
    
    private class AddRequestImpl implements AddRequest {
        private Boolean clonePermissions;
        public AddRequest clonePermissions(Boolean clonePermissions) {
            this.clonePermissions = clonePermissions;
            return this;
        }
        
        private Template template;
        public AddRequest template(Template template) {
            this.template = template;
            return this;
        }
        
        public AddRequest template(TemplateBuilder template) {
            this.template = template.build();
            return this;
        }
        
        public AddResponse send() {
            HttpPost request = null;
            try {
                URIBuilder uriBuilder = new URIBuilder(getConnection().getUrl() + getPath());
                if (clonePermissions != null) {
                    uriBuilder.addParameter("clone_permissions", XmlWriter.renderBoolean(clonePermissions));
                }
                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)
            ) {
                XmlTemplateWriter.writeOne(template, xmlWriter);
                xmlWriter.flush();
                request.setEntity(new ByteArrayEntity(output.toByteArray()));
            }
            catch (IOException ex) {
                throw new Error("Failed to parse response", ex);
            }
            
            HttpResponse response = getConnection().send(request);
            if (
              response.getStatusLine().getStatusCode() == 200
              || response.getStatusLine().getStatusCode() == 201
            ) {
                try (
                  XmlReader reader = new XmlReader(response.getEntity().getContent())
                ) {
                    return new AddResponseImpl(XmlTemplateReader.readOne(reader));
                }
                catch (IOException ex) {
                    throw new Error("Failed to read response", ex);
                }
                finally {
                    EntityUtils.consumeQuietly(response.getEntity());
                }
            }
            else {
                checkFault(response);
                return null;
            }
        }
        
    }
    
    private class AddResponseImpl implements AddResponse {
        private Template template;
        
        public AddResponseImpl(Template template) {
            this.template = template;
        }
        
        public Template template() {
            return template;
        }
        
    }
    
    public AddRequest add() {
        return new AddRequestImpl();
    }
    
    private class ListRequestImpl implements ListRequest {
        private Boolean caseSensitive;
        public ListRequest caseSensitive(Boolean caseSensitive) {
            this.caseSensitive = caseSensitive;
            return this;
        }
        
        private Boolean filter;
        public ListRequest filter(Boolean filter) {
            this.filter = filter;
            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;
        }
        
        private String search;
        public ListRequest search(String search) {
            this.search = search;
            return this;
        }
        
        public ListResponse send() {
            HttpGet request = null;
            try {
                URIBuilder uriBuilder = new URIBuilder(getConnection().getUrl() + getPath());
                if (caseSensitive != null) {
                    uriBuilder.addParameter("case_sensitive", XmlWriter.renderBoolean(caseSensitive));
                }
                if (filter != null) {
                    uriBuilder.addParameter("filter", XmlWriter.renderBoolean(filter));
                }
                if (max != null) {
                    uriBuilder.addParameter("max", XmlWriter.renderInteger(max));
                }
                if (search != null) {
                    uriBuilder.addParameter("search", XmlWriter.renderString(search));
                }
                request = new HttpGet(uriBuilder.build());
            }
            catch (URISyntaxException ex) {
                throw new Error("Failed to build URL", ex);
            }
            
            HttpResponse response = getConnection().send(request);
            if (
              response.getStatusLine().getStatusCode() == 200
            ) {
                try (
                  XmlReader reader = new XmlReader(response.getEntity().getContent())
                ) {
                    return new ListResponseImpl(XmlTemplateReader.readMany(reader));
                }
                catch (IOException ex) {
                    throw new Error("Failed to read response", ex);
                }
                finally {
                    EntityUtils.consumeQuietly(response.getEntity());
                }
            }
            else {
                checkFault(response);
                return null;
            }
        }
        
    }
    
    private class ListResponseImpl implements ListResponse {
        private List