package org.hisp.dhis.webapi.controller;

/*
 * Copyright (c) 2004-2018, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * Neither the name of the HISP project nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import java.io.IOException;
import java.nio.charset.StandardCharsets;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.io.IOUtils;
import org.hisp.dhis.common.cache.CacheStrategy;
import org.hisp.dhis.webapi.utils.ContextUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.io.ClassPathResource;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

/**
 * @author Lars Helge Overland
 */
@Controller
public class ReportTemplateController
{
    @Autowired
    private ContextUtils contextUtils;

    @RequestMapping( value = "/reportTemplate.xml", method = RequestMethod.GET, produces = "application/xml" )
    public void getReportDesignJrxml( HttpServletResponse response ) throws Exception
    {
        serveTemplate( response, ContextUtils.CONTENT_TYPE_XML, "jasper-report-template.jrxml" );
    }

    @RequestMapping( value = "/reportTemplate.html", method = RequestMethod.GET, produces = "application/xml" )
    public void getReportDesignHtml( HttpServletResponse response ) throws Exception
    {
        serveTemplate( response, ContextUtils.CONTENT_TYPE_HTML, "html-report-template.html" );
    }

    private void serveTemplate( HttpServletResponse response, String contentType, String template ) throws IOException
    {
        contextUtils.configureResponse( response, contentType, CacheStrategy.CACHE_1_HOUR, template, true );

        String content = IOUtils.toString( new ClassPathResource( template ).getInputStream(), StandardCharsets.UTF_8 );

        IOUtils.write( content, response.getWriter() );
    }
}

Add report template API endpoint (#3199)