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/*******************************************************************************
 * Copyright (c) 2015-2018 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.capability.resources;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import org.apache.commons.lang.StringUtils;

import com.openshift.restclient.IClient;
import com.openshift.restclient.ResourceKind;
import com.openshift.restclient.capability.resources.IBuildTriggerable;
import com.openshift.restclient.model.IBuild;
import com.openshift.restclient.model.IBuildConfig;
import com.openshift.restclient.model.IResource;
import com.openshift.restclient.model.build.IBinaryBuildSource;
import com.openshift.restclient.model.build.IBuildRequest;

public class BuildTrigger implements IBuildTriggerable {

    private static final String BUILDCONFIG_SUBRESOURCE = "instantiate";
    private static final String BUILD_SUBRESOURCE = "clone";
    private IResource resource;
    private IClient client;
    private final String subresource;
    private String commitId;
    private List causes;
    private HashMap envVars = new HashMap<>();

    public BuildTrigger(IBuildConfig buildConfig, IClient client) {
        this.resource = buildConfig;
        this.client = client;
        this.subresource = BUILDCONFIG_SUBRESOURCE;
        this.causes = new ArrayList<>();
    }

    public BuildTrigger(IBuild build, IClient client) {
        this.resource = build;
        this.client = client;
        this.subresource = BUILD_SUBRESOURCE;
        this.causes = new ArrayList<>();
    }

    @Override
    public boolean isSupported() {
        return resource != null && client != null && (isSupportedBuild() || isSupportedBuildConfig());
    }

    private boolean isSupportedBuild() {
        return ResourceKind.BUILD.equals(resource.getKind())
                && !(((IBuild) resource).getBuildSource() instanceof IBinaryBuildSource);
    }

    private boolean isSupportedBuildConfig() {
        return ResourceKind.BUILD_CONFIG.equals(resource.getKind())
                && !(((IBuildConfig) resource).getBuildSource() instanceof IBinaryBuildSource);
    }

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

    @Override
    public IBuild trigger() {
        IBuildRequest request = client.getResourceFactory().stub(ResourceKind.BUILD_REQUEST, resource.getName());
        if (StringUtils.isNotEmpty(commitId)) {
            request.setCommitId(commitId);
        }
        causes.forEach(request::addBuildCause);
        envVars.forEach(request::setEnvironmentVariable);
        return client.create(resource.getKind(), resource.getNamespaceName(), resource.getName(), subresource, request);
    }

    @Override
    @Deprecated
    public IBuild trigger(String commitId) {
        IBuildRequest request = client.getResourceFactory().stub(ResourceKind.BUILD_REQUEST, resource.getName());
        request.setCommitId(commitId);
        return client.create(resource.getKind(), resource.getNamespaceName(), resource.getName(), subresource, request);
    }

    @Override
    public void setCommitId(String commitId) {
        this.commitId = commitId;
    }

    @Override
    public String getCommitId() {
        return commitId;
    }

    @Override
    public void addBuildCause(String cause) {
        causes.add(cause);
    }

    @Override
    public List getBuildCauses() {
        return new ArrayList<>(causes);
    }

    @Override
    public void setEnvironmentVariable(String name, String value) {
        envVars.put(name, value);
    }

}