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/*******************************************************************************
 * Copyright (c) 2016-2018 Red Hat, Inc.
 * Distributed under license by Red Hat, Inc. All rights reserved.
 * This program is made available under the terms of the
 * Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Red Hat, Inc. - initial API and implementation
 ******************************************************************************/

package com.openshift.internal.restclient.model.build;

import java.util.List;
import java.util.Map;
import java.util.UUID;

import org.apache.commons.lang.StringUtils;
import org.jboss.dmr.ModelNode;

import com.openshift.internal.restclient.model.BuildConfig;
import com.openshift.restclient.IClient;
import com.openshift.restclient.ResourceKind;
import com.openshift.restclient.images.DockerImageURI;
import com.openshift.restclient.model.IBuildConfig;
import com.openshift.restclient.model.IEnvironmentVariable;
import com.openshift.restclient.model.IObjectReference;
import com.openshift.restclient.model.build.BuildTriggerType;
import com.openshift.restclient.model.build.IBuildConfigBuilder;

/**
 * Impl of a builder to create buildconfigs
 *
 */
public class BuildConfigBuilder implements IBuildConfigBuilder {

    private SourceStrategyBuilder sourceStrategyBuilder;
    private GitSourceBuilder gitSourceBuilder;
    private BinarySourceBuilder binarySourceBuilder;
    private JenkinsPipelineStrategyBuilder jenkinsPipelineStrategyBuilder;
    private String imageStreamTagOutput;
    private boolean buildOnConfigChange;
    private boolean buildOnImageChange;
    private boolean buildOnSourceChange;
    private final IClient client;
    private String name;
    private String namespace;
    private Map labels;

    public BuildConfigBuilder(IClient client) {
        this.client = client;
    }

    @Override
    public boolean isSupported() {
        return true;
    }

    @Override
    public String getName() {
        return BuildConfigBuilder.class.getSimpleName();
    }

    @Override
    public IBuildConfigBuilder named(String name) {
        this.name = name;
        return this;
    }

    @Override
    public IBuildConfigBuilder inNamespace(String namespace) {
        this.namespace = namespace;
        return this;
    }

    @Override
    public IBuildConfigBuilder withLabels(Map labels) {
        this.labels = labels;
        return this;
    }

    @Override
    public IBuildConfig build() {
        BuildConfig bc = client.getResourceFactory().stub(ResourceKind.BUILD_CONFIG, this.name, this.namespace);

        if (sourceStrategyBuilder != null) {
            bc.setBuildStrategy(sourceStrategyBuilder.build(bc.getPropertyKeys()));
        } else if (jenkinsPipelineStrategyBuilder != null) {
            bc.setBuildStrategy(jenkinsPipelineStrategyBuilder.build(bc.getPropertyKeys()));
        }

        if (gitSourceBuilder != null) {
            bc.setBuildSource(gitSourceBuilder.build());
        } else if (binarySourceBuilder != null) {
            bc.setBuildSource(binarySourceBuilder.build());
        }

        if (labels != null && !labels.isEmpty()) {
            for (Map.Entry label : labels.entrySet()) {
                bc.addLabel(label.getKey(), label.getValue());
            }
        }

        DockerImageURI uri = new DockerImageURI(imageStreamTagOutput);
        IObjectReference outRef = bc.getBuildOutputReference();
        outRef.setKind(ResourceKind.IMAGE_STREAM_TAG);
        outRef.setName(uri.getNameAndTag());
        if (StringUtils.isNotBlank(uri.getUserName())) {
            outRef.setNamespace(uri.getUserName());
        }

        bc.addBuildTrigger(new WebhookTrigger(BuildTriggerType.GENERIC, UUID.randomUUID().toString(), null));
        if (buildOnImageChange) {
            bc.addBuildTrigger(new ImageChangeTrigger(BuildTriggerType.IMAGE_CHANGE, null, null, null));
        }
        if (buildOnConfigChange) {
            bc.addBuildTrigger(new ImageChangeTrigger(BuildTriggerType.CONFIG_CHANGE, null, null, null));
        }
        if (buildOnSourceChange) {
            bc.addBuildTrigger(new WebhookTrigger(BuildTriggerType.GITHUB, UUID.randomUUID().toString(), null));
        }

        return bc;
    }

    @Override
    public IBuildConfigBuilder buildOnSourceChange(boolean onSourceChange) {
        this.buildOnSourceChange = onSourceChange;
        return this;
    }

    @Override
    public IBuildConfigBuilder buildOnImageChange(boolean onImageChange) {
        this.buildOnImageChange = onImageChange;
        return this;
    }

    @Override
    public IBuildConfigBuilder buildOnConfigChange(boolean onConfigChange) {
        this.buildOnConfigChange = onConfigChange;
        return this;
    }

    @Override
    public IBuildConfigBuilder toImageStreamTag(String tag) {
        imageStreamTagOutput = tag;
        return this;
    }

    @Override
    public ISourceStrategyBuilder usingSourceStrategy() {
        sourceStrategyBuilder = new SourceStrategyBuilder(this);
        return sourceStrategyBuilder;
    }

    @Override
    public IGitSourceBuilder fromGitSource() {
        gitSourceBuilder = new GitSourceBuilder(this);
        return gitSourceBuilder;
    }
    
    @Override
    public IBinarySourceBuilder fromBinarySource() {
        binarySourceBuilder = new BinarySourceBuilder(this);
        return binarySourceBuilder;
    }

    @Override
    public IJenkinsPipelineStrategyBuilder usingJenkinsPipelineStrategy() {
        jenkinsPipelineStrategyBuilder = new JenkinsPipelineStrategyBuilder(this);
        return jenkinsPipelineStrategyBuilder;
    }

    class SourceBuilder implements ISourceBuilder {

        protected IBuildConfigBuilder builder;
        protected String contextDir;

        SourceBuilder(IBuildConfigBuilder builder) {
            this.builder = builder;
        }
        
        @Override
        public IBuildConfigBuilder end() {
            return builder;
        }

        @Override
        public T inContextDir(String contextDir) {
            this.contextDir = contextDir;
            return (T) this;
        }
        
    }
    
    class GitSourceBuilder extends SourceBuilder implements IGitSourceBuilder {
        private String url;
        private String ref;

        GitSourceBuilder(IBuildConfigBuilder builder) {
            super(builder);
        }

        private GitBuildSource build() {
            return new GitBuildSource(url, ref, contextDir);
        }

        @Override
        public IGitSourceBuilder fromGitUrl(String url) {
            this.url = url;
            return this;
        }

        @Override
        public IGitSourceBuilder usingGitReference(String ref) {
            this.ref = ref;
            return this;
        }
    }

    class BinarySourceBuilder extends SourceBuilder implements IBinarySourceBuilder {
        private String asFile;

        BinarySourceBuilder(IBuildConfigBuilder builder) {
            super(builder);
        }

        private BinaryBuildSource build() {
            return new BinaryBuildSource(asFile, contextDir);
        }

        @Override
        public IBinarySourceBuilder fromAsFile(String asFile) {
            this.asFile = asFile;
            return this;
        }
    }

    class SourceStrategyBuilder implements ISourceStrategyBuilder {

        private IBuildConfigBuilder builder;
        private List envVars;
        private String namespace;
        private String tag;
        private String fromKind;

        SourceStrategyBuilder(IBuildConfigBuilder builder) {
            this.builder = builder;
        }

        public SourceBuildStrategy build(Map overrides) {
            SourceBuildStrategy strategy = new SourceBuildStrategy(new ModelNode(), overrides);
            strategy.setEnvVars(envVars);
            strategy.setFromNamespace(namespace);
            strategy.setImage(new DockerImageURI(tag));
            strategy.setFromKind(fromKind);
            return strategy;
        }

        @Override
        public IBuildConfigBuilder end() {
            return builder;
        }

        @Override
        public ISourceStrategyBuilder fromImageStreamTag(String tag) {
            this.tag = tag;
            this.fromKind = ResourceKind.IMAGE_STREAM_TAG;
            return this;
        }

        @Override
        public ISourceStrategyBuilder inNamespace(String namespace) {
            this.namespace = namespace;
            return this;
        }

        @Override
        public ISourceStrategyBuilder withEnvVars(List envVars) {
            this.envVars = envVars;
            return this;
        }

        @Override
        public ISourceStrategyBuilder fromDockerImage(String tag) {
            this.tag = tag;
            this.fromKind = "DockerImage";
            return this;
        }
    }

    class JenkinsPipelineStrategyBuilder implements IJenkinsPipelineStrategyBuilder {

        private IBuildConfigBuilder builder;
        private String jenkinsFilePath;
        private String jenkinsFile;

        JenkinsPipelineStrategyBuilder(IBuildConfigBuilder builder) {
            this.builder = builder;
        }

        @Override
        public IJenkinsPipelineStrategyBuilder usingFile(String file) {
            this.jenkinsFile = file;
            return this;
        }

        @Override
        public IJenkinsPipelineStrategyBuilder usingFilePath(String filePath) {
            this.jenkinsFilePath = filePath;
            return this;
        }

        private JenkinsPipelineStrategy build(Map overrides) {
            JenkinsPipelineStrategy strategy = new JenkinsPipelineStrategy(new ModelNode(), overrides);
            strategy.setJenkinsfilePath(jenkinsFilePath);
            strategy.setJenkinsfile(jenkinsFile);
            return strategy;
        }

        @Override
        public IBuildConfigBuilder end() {
            return builder;
        }

    }

}




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