edu.usu.sdl.openstorefront.report.generator.HtmlGenerator.java Source code

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Here is the source code for edu.usu.sdl.openstorefront.report.generator.HtmlGenerator.java
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/*
 * Copyright 2015 Space Dynamics Laboratory - Utah State University Research Foundation.
 *
 * 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 edu.usu.sdl.openstorefront.report.generator;

import edu.usu.sdl.openstorefront.common.exception.OpenStorefrontRuntimeException;
import edu.usu.sdl.openstorefront.core.entity.Report;
import java.io.BufferedWriter;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.Objects;
import org.apache.commons.lang3.StringUtils;

/**
 *
 * @author dshurtleff
 */
public class HtmlGenerator extends BaseGenerator {

    BufferedWriter writer;

    public HtmlGenerator(Report report) {
        super(report);
    }

    @Override
    public void init() {
        Objects.requireNonNull(report, "The generator requires the report to exist.");
        Objects.requireNonNull(report.getReportId(), "The report id is required.");
        try {
            writer = new BufferedWriter(
                    new OutputStreamWriter(new FileOutputStream(report.pathToReport().toFile())));
            writer.append("<html><body style='padding: 20px'>");
        } catch (IOException ex) {
            throw new OpenStorefrontRuntimeException("Unable to open file to write report.",
                    "Check file system permissions", ex);
        }
    }

    public void addStyleBlock(String style) {
        try {
            writer.append("<style>");
            writer.newLine();
            writer.append(style);
            writer.newLine();
            writer.append("</style>");
            writer.newLine();

        } catch (IOException ex) {
            throw new OpenStorefrontRuntimeException(ex);
        }
    }

    public void addMainHeader(String data) {
        try {
            writer.append("<h1>");
            writer.append(data);
            writer.append("</h1>");
            writer.newLine();
        } catch (IOException ex) {
            throw new OpenStorefrontRuntimeException(ex);
        }
    }

    public void addRuleLine() {
        addLine("<hr>");
    }

    public void addSpace() {
        addLine("<br>");
    }

    public void addLine(String line) {
        if (StringUtils.isNotBlank(line)) {
            try {
                writer.append(line);
                writer.newLine();
            } catch (IOException ex) {
                throw new OpenStorefrontRuntimeException(ex);
            }
        }
    }

    @Override
    protected void internalFinish() {
        if (writer != null) {
            try {
                writer.append("</body></html>");
                writer.close();
            } catch (IOException ex) {
                throw new OpenStorefrontRuntimeException(
                        "Failed to close report file. Report: " + report.pathToReport(), ex);
            }
        }
    }

}