package de.superx.bianalysis;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Base64;
import java.util.Enumeration;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

import org.jdom2.Document;
import org.jdom2.input.SAXBuilder;
import org.jdom2.output.XMLOutputter;
import org.junit.Before;
import org.junit.After;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;

import com.fasterxml.jackson.databind.ObjectMapper;

import de.superx.BIATestUtils;
import de.superx.BaseDbTest;
import de.superx.bianalysis.jasper.JasperReportJson;
import de.superx.bianalysis.jasper.JasperReportJsonWrapper;
import de.superx.bianalysis.models.Right;
import de.superx.bianalysis.models.RightParam;
import de.superx.bianalysis.rest.BiAnalysisApi;
import de.superx.bianalysis.service.DbMetaAdapter;
import de.superx.bianalysis.service.JasperReportExport;
import de.superx.rest.model.Download;

public class JasperTest extends BaseDbTest{
	
    @Autowired
    DbMetaAdapter dbMetaAdapter;

    @Autowired
    BiAnalysisApi biAnalysis;

    @Autowired
    JasperReportExport jasperReportExport;

	JasperReportJson jrj = new JasperReportJson();
	private static String TEST_TEMP_FOLDER = String.join(File.separator, new String[] {"test", "tmp"});
	private static String TEMP_BIANYLSIS_JSON = String.join(File.separator, new String[] {TEST_TEMP_FOLDER,  "biAnalysis.json"});
	private static String TEMP_JASPER_REPORT = String.join(File.separator, new String[] {TEST_TEMP_FOLDER, "MainReport.jrxml"});
	private static String JASPER_JSON = String.join(File.separator, new String[] {BIATestUtils.RW_TEST_PATH, "result_jasper", "jasper" + ".json"});
	private static String MAIN_REPORT = String.join(File.separator, new String[] {BIATestUtils.RW_TEST_PATH, "result_jasper", "MainReport" + ".jrxml"});
	private static String DADATA_ADAPTER_REST_0 = String.join(File.separator, new String[] {BIATestUtils.RW_TEST_PATH, "result_jasper", "DataAdapterRest0" + ".jrdax"});
    private static String DADATA_ADAPTER_REST_1 = String.join(File.separator, new String[] {BIATestUtils.RW_TEST_PATH, "result_jasper", "DataAdapterRest1" + ".jrdax"});
    
    @Before
    public void init() {
    	user.setHisInOneOrgUnitLidOfRole(Integer.valueOf(2));
    	setRightParamValue(Right.CREATE_ANALYSIS, RightParam.TOPIC_AREA, "130");
        setRightParamValue(Right.DELETE_ANALYSIS, RightParam.TOPIC_AREA, "130");
    }
    
    @After
    public void deleteTmpFolder() {
    	deleteDir(new File(TEST_TEMP_FOLDER));
    }
	
	@Test
    public void testInitJasperReportJson() throws Exception {
		String file = "storedReport";
		StoredReport storedReportFromFile = BIATestUtils.readStoredReportFromJson(file);

		int storedReportId = biAnalysis.persistReportDefinition(storedReportFromFile);

		JasperReportJsonWrapper jasperReportJsonWrapper = biAnalysis.getJasperJsonDatasource(storedReportId);

	    ObjectMapper mapper = new ObjectMapper();

	    String json = normalizeJsonString(mapper.writeValueAsString(jasperReportJsonWrapper));
	    String expectedJson = normalizeJsonString(mapper.readTree(Files.readAllBytes(new File(JASPER_JSON).toPath())).toString());
	    boolean reportDeleted = biAnalysis.deleteReportDefinition(storedReportId);

	    assertEquals(expectedJson, json);
	    assertTrue(reportDeleted);
	}
	
	@Test
	public void testExportJasperReport() throws Exception {
		StoredReport storedReportFromFile = BIATestUtils.readStoredReportFromJson("storedReport");
		int storedReportId = biAnalysis.persistReportDefinition(storedReportFromFile);

		Download download = biAnalysis.getJasperTemplate(storedReportId);

	    // unpack zip
		byte[] bytes = Base64.getDecoder().decode(download.base64String);

	    File zipFile = File.createTempFile("temp", ".zip");
	    try (FileOutputStream fos = new FileOutputStream(zipFile)) {
	        fos.write(bytes);
	    }

	    ZipFile zip = new ZipFile(zipFile);
	    Enumeration<? extends ZipEntry> entries = zip.entries();
	    while (entries.hasMoreElements()) {
	        ZipEntry entry = entries.nextElement();
	        File file2 = new File(String.join(File.separator, new String[] {TEST_TEMP_FOLDER, entry.getName()}));
	        file2.getParentFile().mkdirs();
	        try (InputStream is = zip.getInputStream(entry);
	             FileOutputStream fos = new FileOutputStream(file2)) {
	            byte[] buffer = new byte[1024];
	            int len;
	            while ((len = is.read(buffer)) != -1) {
	                fos.write(buffer, 0, len);
	            }
	        }
	    }
	    
	    // compare Json-File
	    File expectedJsonFile = new File(JASPER_JSON);
	    File actualJsonFile = new File(TEMP_BIANYLSIS_JSON);

	    ObjectMapper mapper = new ObjectMapper();
	    String actualJson = normalizeJsonString(mapper.readTree(Files.readAllBytes(actualJsonFile.toPath())).toString());
	    String expectedJson = normalizeJsonString(mapper.readTree(Files.readAllBytes(expectedJsonFile.toPath())).toString());

	    assertEquals(expectedJson, actualJson);

	    // compare JasperReport-File
	    File expectedMainReport = new File(MAIN_REPORT);
	    File actualMainReport = new File(TEMP_JASPER_REPORT);

	    SAXBuilder saxBuilder = new SAXBuilder();
        Document expectedReport = saxBuilder.build(expectedMainReport);
        Document actualReport = saxBuilder.build(actualMainReport);

        XMLOutputter outputter = new XMLOutputter();
        String expectedReportXML = outputter.outputString(expectedReport);
        String actualReportXML = outputter.outputString(actualReport);

	    assertEquals(expectedReportXML, actualReportXML);

	    assertTrue(biAnalysis.deleteReportDefinition(storedReportId));
	}

	@Test
	public void testDataAdapterRest() throws IOException {
		jasperReportExport.setJsonRestAdapter(0);

		Path path = new File(JasperReportExport.getPath(JasperReportExport.DATA_ADAPTER_REST)).toPath();
		String dataAdapterContent = String.join("", Files.readAllLines(path)).replace("\r\n", "\n");
		Path path0 = new File(DADATA_ADAPTER_REST_0).toPath();
		String dataAdapterContent0 = String.join("", Files.readAllLines(path0)).replace("\r\n", "\n");

		assertEquals(dataAdapterContent0, dataAdapterContent);

		jasperReportExport.setJsonRestAdapter(1);

		String dataAdapterContentNew = new String(Files.readAllBytes(new File(JasperReportExport.getPath(JasperReportExport.DATA_ADAPTER_REST)).toPath())).replace("\r\n", "\n");
		String dataAdapterContent1 = new String(Files.readAllBytes(new File(DADATA_ADAPTER_REST_1).toPath())).replace("\r\n", "\n");
		assertEquals(dataAdapterContent1, dataAdapterContentNew);
	}
	
    public static void deleteDir(File path) {
        if (path.isDirectory()) {
            File[] files = path.listFiles();
            if (files != null) {
                for (File file : files) {
                    deleteDir(file);  // Rekursion für Unterordner
                }
            }
        }
        path.delete();  // Datei oder leeren Ordner löschen
    }
    
    public static String normalizeJsonString(String jsonString) {
        // Entferne alle Zahlen (einschließlich Dezimalstellen) aus dem JSON-String
        Pattern pattern = Pattern.compile("-?\\d+(\\.\\d+)?"); // Regex für Zahlen
        Matcher matcher = pattern.matcher(jsonString);
        return matcher.replaceAll("");
    }
}