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package com.google.refine.exporters;

import static org.mockito.Mockito.mock;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.time.OffsetDateTime;
import java.util.List;
import java.util.Properties;

import org.odftoolkit.odfdom.doc.OdfDocument;
import org.odftoolkit.odfdom.doc.table.OdfTable;
import org.slf4j.LoggerFactory;
import org.testng.Assert;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;

import com.google.refine.ProjectManager;
import com.google.refine.ProjectManagerStub;
import com.google.refine.ProjectMetadata;
import com.google.refine.RefineTest;
import com.google.refine.browsing.Engine;
import com.google.refine.model.Cell;
import com.google.refine.model.Column;
import com.google.refine.model.ModelException;
import com.google.refine.model.Project;
import com.google.refine.model.Row;

public class OdsExporterTests extends RefineTest {

    private static final String TEST_PROJECT_NAME = "ods exporter test project";

    @Override
    @BeforeTest
    public void init() {
        logger = LoggerFactory.getLogger(this.getClass());
    }

    // dependencies
    ByteArrayOutputStream stream;
    ProjectMetadata projectMetadata;
    Project project;
    Engine engine;
    Properties options;

    // System Under Test
    StreamExporter SUT;

    @BeforeMethod
    public void SetUp() {
        SUT = new OdsExporter();
        stream = new ByteArrayOutputStream();
        ProjectManager.singleton = new ProjectManagerStub();
        projectMetadata = new ProjectMetadata();
        project = new Project();
        projectMetadata.setName(TEST_PROJECT_NAME);
        ProjectManager.singleton.registerProject(project, projectMetadata);
        engine = new Engine(project);
        options = mock(Properties.class);
    }

    @AfterMethod
    public void TearDown() {
        SUT = null;
        stream = null;
        ProjectManager.singleton.deleteProject(project.id);
        project = null;
        engine = null;
        options = null;
    }

    @Test
    public void getContentType() {
        Assert.assertEquals(SUT.getContentType(), "application/vnd.oasis.opendocument.spreadsheet");
    }

    @Test
    public void exportSimpleOds() throws Exception {
        CreateGrid(2, 2);

        SUT.export(project, options, engine, stream);

        OdfDocument odfDoc = OdfDocument.loadDocument(new ByteArrayInputStream(stream.toByteArray()));
        List<OdfTable> tables = odfDoc.getTableList();
        Assert.assertEquals(tables.size(), 1); // we deleted the first sheet generated by default
        OdfTable odfTab = tables.get(0);
        Assert.assertEquals(odfTab.getTableName(), "ods exporter test project");
        Assert.assertEquals(odfTab.getRowCount(), 3); // first row is header
        Assert.assertEquals(odfTab.getRowByIndex(1).getCellByIndex(0).getStringValue(), "row0cell0");
    }

    protected void CreateColumns(int noOfColumns) {
        for (int i = 0; i < noOfColumns; i++) {
            try {
                project.columnModel.addColumn(i, new Column(i, "column" + i), true);
            } catch (ModelException e1) {
                Assert.fail("Could not create column");
            }
        }
    }

    protected void CreateGrid(int noOfRows, int noOfColumns) {
        CreateColumns(noOfColumns);

        for (int i = 0; i < noOfRows; i++) {
            Row row = new Row(noOfColumns);
            for (int j = 0; j < noOfColumns; j++) {
                row.cells.add(new Cell("row" + i + "cell" + j, null));
            }
            project.rows.add(row);
        }
    }

    private void createDateGrid(int noOfRows, int noOfColumns, OffsetDateTime now) {
        CreateColumns(noOfColumns);

        for (int i = 0; i < noOfRows; i++) {
            Row row = new Row(noOfColumns);
            for (int j = 0; j < noOfColumns; j++) {
                row.cells.add(new Cell(now, null));
            }
            project.rows.add(row);
        }
    }
}
