package jalview.renderer.seqfeatures;

import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertFalse;
import static org.testng.Assert.assertTrue;

import jalview.api.AlignViewportI;
import jalview.api.FeatureColourI;
import jalview.datamodel.SequenceFeature;
import jalview.datamodel.SequenceI;
import jalview.gui.AlignFrame;
import jalview.io.DataSourceType;
import jalview.io.FileLoader;
import jalview.schemes.FeatureColour;

import java.awt.Color;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;

import org.testng.annotations.Test;

public class FeatureRendererTest
{

  @Test(groups = "Functional")
  public void testFindAllFeatures()
  {
    String seqData = ">s1\nabcdef\n>s2\nabcdef\n>s3\nabcdef\n>s4\nabcdef\n";
    AlignFrame af = new FileLoader().LoadFileWaitTillLoaded(seqData,
            DataSourceType.PASTE);
    AlignViewportI av = af.getViewport();
    FeatureRenderer fr = new FeatureRenderer(av);

    /*
     * with no features
     */
    fr.findAllFeatures(true);
    assertTrue(fr.getRenderOrder().isEmpty());
    assertTrue(fr.getFeatureGroups().isEmpty());

    List<SequenceI> seqs = av.getAlignment().getSequences();

    // add a non-positional feature - should be ignored by FeatureRenderer
    SequenceFeature sf1 = new SequenceFeature("Type", "Desc", 0, 0, 1f,
            "Group");
    seqs.get(0).addSequenceFeature(sf1);
    fr.findAllFeatures(true);
    // ? bug - types and groups added for non-positional features
    List<String> types = fr.getRenderOrder();
    List<String> groups = fr.getFeatureGroups();
    assertEquals(types.size(), 0);
    assertFalse(types.contains("Type"));
    assertEquals(groups.size(), 0);
    assertFalse(groups.contains("Group"));

    // add some positional features
    seqs.get(1).addSequenceFeature(
            new SequenceFeature("Pfam", "Desc", 5, 9, 1f, "PfamGroup"));
    seqs.get(2).addSequenceFeature(
            new SequenceFeature("Pfam", "Desc", 14, 22, 2f, "RfamGroup"));
    // bug in findAllFeatures - group not checked for a known feature type
    seqs.get(2).addSequenceFeature(
            new SequenceFeature("Rfam", "Desc", 5, 9, Float.NaN,
                    "RfamGroup"));
    // existing feature type with null group
    seqs.get(3).addSequenceFeature(
            new SequenceFeature("Rfam", "Desc", 5, 9, Float.NaN, null));
    // new feature type with null group
    seqs.get(3).addSequenceFeature(
            new SequenceFeature("Scop", "Desc", 5, 9, Float.NaN, null));
    // null value for type produces NullPointerException
    fr.findAllFeatures(true);
    types = fr.getRenderOrder();
    groups = fr.getFeatureGroups();
    assertEquals(types.size(), 3);
    assertFalse(types.contains("Type"));
    assertTrue(types.contains("Pfam"));
    assertTrue(types.contains("Rfam"));
    assertTrue(types.contains("Scop"));
    assertEquals(groups.size(), 2);
    assertFalse(groups.contains("Group"));
    assertTrue(groups.contains("PfamGroup"));
    assertTrue(groups.contains("RfamGroup"));
    assertFalse(groups.contains(null)); // null group is ignored

    /*
     * check min-max values
     */
    Map<String, float[][]> minMax = fr.getMinMax();
    assertEquals(minMax.size(), 1); // non-positional and NaN not stored
    assertEquals(minMax.get("Pfam")[0][0], 1f); // positional min
    assertEquals(minMax.get("Pfam")[0][1], 2f); // positional max

    // increase max for Pfam, add scores for Rfam
    seqs.get(0).addSequenceFeature(
            new SequenceFeature("Pfam", "Desc", 14, 22, 8f, "RfamGroup"));
    seqs.get(1).addSequenceFeature(
            new SequenceFeature("Rfam", "Desc", 5, 9, 6f, "RfamGroup"));
    fr.findAllFeatures(true);
    // note minMax is not a defensive copy, shouldn't expose this
    assertEquals(minMax.size(), 2);
    assertEquals(minMax.get("Pfam")[0][0], 1f);
    assertEquals(minMax.get("Pfam")[0][1], 8f);
    assertEquals(minMax.get("Rfam")[0][0], 6f);
    assertEquals(minMax.get("Rfam")[0][1], 6f);

    /*
     * check render order (last is on top)
     */
    List<String> renderOrder = fr.getRenderOrder();
    assertEquals(renderOrder, Arrays.asList("Scop", "Rfam", "Pfam"));

    /*
     * change render order (todo: an easier way)
     * nb here last comes first in the data array
     */
    Object[][] data = new Object[3][];
    FeatureColourI colour = new FeatureColour(Color.RED);
    data[0] = new Object[] { "Rfam", colour, true };
    data[1] = new Object[] { "Pfam", colour, false };
    data[2] = new Object[] { "Scop", colour, false };
    fr.setFeaturePriority(data);
    assertEquals(fr.getRenderOrder(), Arrays.asList("Scop", "Pfam", "Rfam"));
    assertEquals(fr.getDisplayedFeatureTypes(), Arrays.asList("Rfam"));

    /*
     * add a new feature type: should go on top of render order as visible,
     * other feature ordering and visibility should be unchanged
     */
    seqs.get(2).addSequenceFeature(
            new SequenceFeature("Metal", "Desc", 14, 22, 8f, "MetalGroup"));
    fr.findAllFeatures(true);
    assertEquals(fr.getRenderOrder(),
            Arrays.asList("Scop", "Pfam", "Rfam", "Metal"));
    assertEquals(fr.getDisplayedFeatureTypes(),
            Arrays.asList("Rfam", "Metal"));
  }

  @Test(groups = "Functional")
  public void testFindFeaturesAtColumn()
  {
    String seqData = ">s1/4-29\n-ab--cdefghijklmnopqrstuvwxyz\n";
    AlignFrame af = new FileLoader().LoadFileWaitTillLoaded(seqData,
            DataSourceType.PASTE);
    AlignViewportI av = af.getViewport();
    FeatureRenderer fr = new FeatureRenderer(av);
    SequenceI seq = av.getAlignment().getSequenceAt(0);

    /*
     * with no features
     */
    List<SequenceFeature> features = fr.findFeaturesAtColumn(seq, 3);
    assertTrue(features.isEmpty());

    /*
     * add features
     */
    SequenceFeature sf1 = new SequenceFeature("Type1", "Desc", 0, 0, 1f,
            "Group"); // non-positional
    seq.addSequenceFeature(sf1);
    SequenceFeature sf2 = new SequenceFeature("Type2", "Desc", 8, 18, 1f,
            "Group1");
    seq.addSequenceFeature(sf2);
    SequenceFeature sf3 = new SequenceFeature("Type3", "Desc", 8, 18, 1f,
            "Group2");
    seq.addSequenceFeature(sf3);
    SequenceFeature sf4 = new SequenceFeature("Type3", "Desc", 8, 18, 1f,
            null); // null group is always treated as visible
    seq.addSequenceFeature(sf4);

    /*
     * add contact features
     */
    SequenceFeature sf5 = new SequenceFeature("Disulphide Bond", "Desc", 7,
            15, 1f, "Group1");
    seq.addSequenceFeature(sf5);
    SequenceFeature sf6 = new SequenceFeature("Disulphide Bond", "Desc", 7,
            15, 1f, "Group2");
    seq.addSequenceFeature(sf6);
    SequenceFeature sf7 = new SequenceFeature("Disulphide Bond", "Desc", 7,
            15, 1f, null);
    seq.addSequenceFeature(sf7);

    // feature spanning B--C
    SequenceFeature sf8 = new SequenceFeature("Type1", "Desc", 5, 6, 1f,
            "Group");
    seq.addSequenceFeature(sf8);
    // contact feature B/C
    SequenceFeature sf9 = new SequenceFeature("Disulphide Bond", "Desc", 5,
            6, 1f, "Group");
    seq.addSequenceFeature(sf9);

    /*
     * let feature renderer discover features (and make visible)
     */
    fr.findAllFeatures(true);
    features = fr.findFeaturesAtColumn(seq, 15); // all positional
    assertEquals(features.size(), 6);
    assertTrue(features.contains(sf2));
    assertTrue(features.contains(sf3));
    assertTrue(features.contains(sf4));
    assertTrue(features.contains(sf5));
    assertTrue(features.contains(sf6));
    assertTrue(features.contains(sf7));

    /*
     * at a non-contact position
     */
    features = fr.findFeaturesAtColumn(seq, 14);
    assertEquals(features.size(), 3);
    assertTrue(features.contains(sf2));
    assertTrue(features.contains(sf3));
    assertTrue(features.contains(sf4));

    /*
     * make "Type2" not displayed
     */
    Object[][] data = new Object[4][];
    FeatureColourI colour = new FeatureColour(Color.RED);
    data[0] = new Object[] { "Type1", colour, true };
    data[1] = new Object[] { "Type2", colour, false };
    data[2] = new Object[] { "Type3", colour, true };
    data[3] = new Object[] { "Disulphide Bond", colour, true };
    fr.setFeaturePriority(data);

    features = fr.findFeaturesAtColumn(seq, 15);
    assertEquals(features.size(), 5); // no sf2
    assertTrue(features.contains(sf3));
    assertTrue(features.contains(sf4));
    assertTrue(features.contains(sf5));
    assertTrue(features.contains(sf6));
    assertTrue(features.contains(sf7));

    /*
     * make "Group2" not displayed
     */
    fr.setGroupVisibility("Group2", false);

    features = fr.findFeaturesAtColumn(seq, 15);
    assertEquals(features.size(), 3); // no sf2, sf3, sf6
    assertTrue(features.contains(sf4));
    assertTrue(features.contains(sf5));
    assertTrue(features.contains(sf7));

    // features 'at' a gap between b and c
    // - returns enclosing feature BC but not contact feature B/C
    features = fr.findFeaturesAtColumn(seq, 4);
    assertEquals(features.size(), 1);
    assertTrue(features.contains(sf8));
    features = fr.findFeaturesAtColumn(seq, 5);
    assertEquals(features.size(), 1);
    assertTrue(features.contains(sf8));
  }

  @Test(groups = "Functional")
  public void testFilterFeaturesForDisplay()
  {
    String seqData = ">s1\nabcdef\n";
    AlignFrame af = new FileLoader().LoadFileWaitTillLoaded(seqData,
            DataSourceType.PASTE);
    AlignViewportI av = af.getViewport();
    FeatureRenderer fr = new FeatureRenderer(av);

    List<SequenceFeature> features = new ArrayList<>();
    fr.filterFeaturesForDisplay(features, null); // empty list, does nothing

    SequenceI seq = av.getAlignment().getSequenceAt(0);
    SequenceFeature sf1 = new SequenceFeature("Cath", "", 6, 8, "group1");
    seq.addSequenceFeature(sf1);
    SequenceFeature sf2 = new SequenceFeature("Cath", "", 5, 11, "group2");
    seq.addSequenceFeature(sf2);
    SequenceFeature sf3 = new SequenceFeature("Cath", "", 5, 11, "group3");
    seq.addSequenceFeature(sf3);
    SequenceFeature sf4 = new SequenceFeature("Cath", "", 6, 8, "group4");
    seq.addSequenceFeature(sf4);
    SequenceFeature sf5 = new SequenceFeature("Cath", "", 6, 9, "group4");
    seq.addSequenceFeature(sf5);

    fr.findAllFeatures(true);

    features = seq.getSequenceFeatures();
    assertEquals(features.size(), 5);
    assertTrue(features.contains(sf1));
    assertTrue(features.contains(sf2));
    assertTrue(features.contains(sf3));
    assertTrue(features.contains(sf4));
    assertTrue(features.contains(sf5));

    /*
     * filter out duplicate (co-located) features
     * note: which gets removed is not guaranteed
     */
    fr.filterFeaturesForDisplay(features, new FeatureColour(Color.blue));
    assertEquals(features.size(), 3);
    assertTrue(features.contains(sf1) || features.contains(sf4));
    assertFalse(features.contains(sf1) && features.contains(sf4));
    assertTrue(features.contains(sf2) || features.contains(sf3));
    assertFalse(features.contains(sf2) && features.contains(sf3));
    assertTrue(features.contains(sf5));

    /*
     * hide group 3 - sf3 is removed, sf2 is retained
     */
    fr.setGroupVisibility("group3", false);
    features = seq.getSequenceFeatures();
    fr.filterFeaturesForDisplay(features, new FeatureColour(Color.blue));
    assertEquals(features.size(), 3);
    assertTrue(features.contains(sf1) || features.contains(sf4));
    assertFalse(features.contains(sf1) && features.contains(sf4));
    assertTrue(features.contains(sf2));
    assertFalse(features.contains(sf3));
    assertTrue(features.contains(sf5));

    /*
     * hide group 2, show group 3 - sf2 is removed, sf3 is retained
     */
    fr.setGroupVisibility("group2", false);
    fr.setGroupVisibility("group3", true);
    features = seq.getSequenceFeatures();
    fr.filterFeaturesForDisplay(features, null);
    assertEquals(features.size(), 3);
    assertTrue(features.contains(sf1) || features.contains(sf4));
    assertFalse(features.contains(sf1) && features.contains(sf4));
    assertFalse(features.contains(sf2));
    assertTrue(features.contains(sf3));
    assertTrue(features.contains(sf5));

    /*
     * no filtering of co-located features with graduated colour scheme
     * sf2 is removed as its group is hidden
     */
    features = seq.getSequenceFeatures();
    fr.filterFeaturesForDisplay(features, new FeatureColour(Color.black,
            Color.white, 0f, 1f));
    assertEquals(features.size(), 4);
    assertTrue(features.contains(sf1));
    assertTrue(features.contains(sf3));
    assertTrue(features.contains(sf4));
    assertTrue(features.contains(sf5));

    /*
     * filtering of co-located features with colour by label
     */
    features = seq.getSequenceFeatures();
    FeatureColour fc = new FeatureColour(Color.black);
    fc.setColourByLabel(true);
    fr.filterFeaturesForDisplay(features, fc);
    assertEquals(features.size(), 3);
    assertTrue(features.contains(sf1) || features.contains(sf4));
    assertFalse(features.contains(sf1) && features.contains(sf4));
    assertFalse(features.contains(sf2));
    assertTrue(features.contains(sf3));
    assertTrue(features.contains(sf5));
  }
}