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*/

package com.google.refine.browsing.facets;

import static org.testng.Assert.assertEquals;

import java.io.IOException;
import java.io.Serializable;
import java.util.Collections;
import java.util.Optional;

import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.JsonMappingException;
import org.slf4j.LoggerFactory;
import org.testng.Assert;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;

import com.google.refine.RefineTest;
import com.google.refine.browsing.RowFilter;
import com.google.refine.browsing.facets.TextSearchFacet.TextSearchFacetConfig;
import com.google.refine.model.ModelException;
import com.google.refine.model.Project;
import com.google.refine.util.ParsingUtilities;
import com.google.refine.util.TestUtils;

public class TextSearchFacetTests extends RefineTest {

    // dependencies
    private Project project;
    private TextSearchFacetConfig textfilterconfig;
    private TextSearchFacet textfilter;
    private RowFilter rowfilter;
    private String sensitiveConfigJson = "{\"type\":\"text\","
            + "\"name\":\"Value\","
            + "\"columnName\":\"Value\","
            + "\"mode\":\"text\","
            + "\"caseSensitive\":true,"
            + "\"invert\":false,"
            + "\"query\":\"A\"}";

    private String sensitiveFacetJson = "{\"name\":\"Value\","
            + "\"columnName\":\"Value\","
            + "\"query\":\"A\","
            + "\"mode\":\"text\","
            + "\"caseSensitive\":true,"
            + "\"invert\":false}";

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

    @BeforeMethod
    public void setUp() throws IOException, ModelException {
        project = createProject("TextSearchFacet",
                new String[] { "Value" },
                new Serializable[][] {
                        { "a" },
                        { "b" },
                        { "ab" },
                        { "Abc" }
                });
    }

    private void configureFilter(String filter) throws JsonParseException, JsonMappingException, IOException {
        // Add the facet to the project and create a row filter
        textfilterconfig = ParsingUtilities.mapper.readValue(filter, TextSearchFacetConfig.class);
        textfilter = textfilterconfig.apply(project);
        rowfilter = textfilter.getRowFilter(project);
    }

    /**
     * Test to demonstrate the intended behaviour of the function
     */

    @Test
    public void testTextFilter() throws Exception {
        // Apply text filter "a"

        // Column: "Value"
        // Filter Query: "a"
        // Mode: "text"
        // Case sensitive: False
        // Invert: False
        String filter = "{\"type\":\"text\","
                + "\"name\":\"Value\","
                + "\"columnName\":\"Value\","
                + "\"mode\":\"text\","
                + "\"caseSensitive\":false,"
                + "\"invert\":false,"
                + "\"query\":\"a\"}";

        configureFilter(filter);

        // Check each row in the project against the filter
        Assert.assertEquals(rowfilter.filterRow(project, 0, project.rows.get(0)), true);
        Assert.assertEquals(rowfilter.filterRow(project, 1, project.rows.get(1)), false);
        Assert.assertEquals(rowfilter.filterRow(project, 2, project.rows.get(2)), true);
        Assert.assertEquals(rowfilter.filterRow(project, 3, project.rows.get(3)), true);
    }

    @Test
    public void testInvertedTextFilter() throws Exception {
        // Apply inverted text filter "a"

        // Column: "Value"
        // Filter Query: "a"
        // Mode: "text"
        // Case sensitive: False
        // Invert: True
        String filter = "{\"type\":\"text\","
                + "\"name\":\"Value\","
                + "\"columnName\":\"Value\","
                + "\"mode\":\"text\","
                + "\"caseSensitive\":false,"
                + "\"invert\":true,"
                + "\"query\":\"a\"}";

        configureFilter(filter);

        // Check each row in the project against the filter
        Assert.assertEquals(rowfilter.filterRow(project, 0, project.rows.get(0)), false);
        Assert.assertEquals(rowfilter.filterRow(project, 1, project.rows.get(1)), true);
        Assert.assertEquals(rowfilter.filterRow(project, 2, project.rows.get(2)), false);
        Assert.assertEquals(rowfilter.filterRow(project, 3, project.rows.get(3)), false);
    }

    @Test
    public void testRegExFilter() throws Exception {
        // Apply regular expression filter "[bc]"

        // Column: "Value"
        // Filter Query: "[bc]"
        // Mode: "regex"
        // Case sensitive: False
        // Invert: False
        String filter = "{\"type\":\"text\","
                + "\"name\":\"Value\","
                + "\"columnName\":\"Value\","
                + "\"mode\":\"regex\","
                + "\"caseSensitive\":false,"
                + "\"invert\":false,"
                + "\"query\":\"[bc]\"}";

        configureFilter(filter);

        // Check each row in the project against the filter
        Assert.assertEquals(rowfilter.filterRow(project, 0, project.rows.get(0)), false);
        Assert.assertEquals(rowfilter.filterRow(project, 1, project.rows.get(1)), true);
        Assert.assertEquals(rowfilter.filterRow(project, 2, project.rows.get(2)), true);
        Assert.assertEquals(rowfilter.filterRow(project, 3, project.rows.get(3)), true);
    }

    @Test
    public void testCaseSensitiveFilter() throws Exception {
        // Apply case-sensitive filter "A"

        configureFilter(sensitiveConfigJson);

        // Check each row in the project against the filter
        // Expect to retrieve one row containing "Abc"
        Assert.assertEquals(rowfilter.filterRow(project, 0, project.rows.get(0)), false);
        Assert.assertEquals(rowfilter.filterRow(project, 1, project.rows.get(1)), false);
        Assert.assertEquals(rowfilter.filterRow(project, 2, project.rows.get(2)), false);
        Assert.assertEquals(rowfilter.filterRow(project, 3, project.rows.get(3)), true);
    }

    @Test
    public void serializeTextSearchFacetConfig() throws JsonParseException, JsonMappingException, IOException {
        TextSearchFacetConfig config = ParsingUtilities.mapper.readValue(sensitiveConfigJson, TextSearchFacetConfig.class);
        TestUtils.isSerializedTo(config, sensitiveConfigJson);
    }

    @Test
    public void serializeTextSearchFacet() throws JsonParseException, JsonMappingException, IOException {
        TextSearchFacetConfig config = ParsingUtilities.mapper.readValue(sensitiveConfigJson, TextSearchFacetConfig.class);
        TextSearchFacet facet = config.apply(project);
        TestUtils.isSerializedTo(facet, sensitiveFacetJson);
    }

    @Test
    public void testColumnDependencies() throws Exception {
        TextSearchFacetConfig facetConfig = ParsingUtilities.mapper.readValue(sensitiveConfigJson, TextSearchFacetConfig.class);
        assertEquals(facetConfig.getColumnDependencies(), Optional.of(Collections.singleton("Value")));
    }
}
