// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.io;

import static org.junit.Assert.*

import java.nio.charset.StandardCharsets

import org.junit.Test
import org.openstreetmap.josm.data.osm.DataSet
import org.openstreetmap.josm.data.osm.Node
import org.openstreetmap.josm.data.osm.OsmPrimitiveType

class ParseWithChangesetReaderTest {

    private DataSet getDataSet(String doc) {
        InputStream is = new ByteArrayInputStream(doc.getBytes(StandardCharsets.UTF_8))
        DataSet ds = new OsmReader().parseDataSet(is, null)
        is.close()
        return ds
    }

    /**
     * A new node with a changeset id. Ignore it.
     */
    @Test
    public void test_1() {
        String doc = """\
         <osm version="0.6">
        <node id="-1" lat="0.0" lon="0.0" changeset="1">
            <tag k="external-id" v="-1"/>
        </node>
        </osm>
        """

        DataSet ds = getDataSet(doc)
        Node n = ds.nodes.find {it.get("external-id") == "-1"}
        assert n != null
        assert n.changesetId == 0
    }

    /**
     * A new node with an invalid changeset id. Ignore it.
     */
    @Test
    public void test_11() {
        String doc = """\
         <osm version="0.6">
        <node id="-1" lat="0.0" lon="0.0" changeset="0">
            <tag k="external-id" v="-1"/>
        </node>
        </osm>
        """

        DataSet ds = getDataSet(doc)
        Node n = ds.nodes.find {it.get("external-id") == "-1"}
        assert n != null
        assert n.changesetId == 0
    }

    /**
     * A new node with an invalid changeset id. Ignore it.
     */
    @Test
    public void test_12() {
        String doc = """\
         <osm version="0.6">
        <node id="-1" lat="0.0" lon="0.0" changeset="-1">
            <tag k="external-id" v="-1"/>
        </node>
        </osm>
        """

        DataSet ds = getDataSet(doc)
        Node n = ds.nodes.find {it.get("external-id") == "-1"}
        assert n != null
        assert n.changesetId == 0
    }

    /**
     * A new node with an invalid changeset id. Ignore it.
     */
    @Test
    public void test_13() {
        String doc = """\
         <osm version="0.6">
        <node id="-1" lat="0.0" lon="0.0" changeset="aaa">
            <tag k="external-id" v="-1"/>
        </node>
        </osm>
        """

        DataSet ds = getDataSet(doc)
        Node n = ds.nodes.find {it.get("external-id") == "-1"}
        assert n != null
        assert n.changesetId == 0
    }

    /**
     * A new node with a missing changeset id. That's fine. The changeset id
     * is reset to 0.
     */
    @Test
    public void test_14() {
        String doc = """\
         <osm version="0.6">
        <node id="-1" lat="0.0" lon="0.0" >
            <tag k="external-id" v="-1"/>
        </node>
        </osm>
        """

        DataSet ds = getDataSet(doc)
        Node n = ds.nodes.find {it.get("external-id") == "-1"}
        assert n != null
        assert n.changesetId == 0
    }


    /**
     * An existing node with a missing changeset id. That's fine. The changeset id
     * is reset to 0.
     */
    @Test
    public void test_2() {
        String doc = """\
         <osm version="0.6">
        <node id="1" lat="0.0" lon="0.0" version="1"/>
        </osm>
        """

        DataSet ds = getDataSet(doc)
        Node n = ds.getPrimitiveById(1, OsmPrimitiveType.NODE)
        assert n != null
        assert n.uniqueId == 1
        assert n.changesetId == 0
    }

    /**
     * An existing node with a valid changeset id id. That's fine. The changeset id
     * is applied.
     */
    @Test
    public void test_3() {
        String doc = """\
         <osm version="0.6">
        <node id="1" lat="0.0" lon="0.0" version="1" changeset="4"/>
        </osm>
        """

        DataSet ds = getDataSet(doc)
        Node n = ds.getPrimitiveById(1, OsmPrimitiveType.NODE)
        assert n != null
        assert n.uniqueId == 1
        assert n.changesetId == 4
    }

    /**
     * An existing node with an invalid changeset id. That's a problem. An exception
     * is thrown.
     */
    @Test
    public void test_4() {
        String doc = """\
         <osm version="0.6">
        <node id="1" lat="0.0" lon="0.0" version="1" changeset="-1"/>
        </osm>
        """

        final shouldFail = new GroovyTestCase().&shouldFail

        shouldFail(IllegalDataException) {
            DataSet ds = getDataSet(doc)
        }
    }
    /**
     * An existing node with an invalid changeset id. That's a problem. An exception
     * is thrown.
     */
    @Test
    public void test_5() {
        String doc = """\
         <osm version="0.6">
        <node id="1" lat="0.0" lon="0.0" version="1" changeset="0"/>
        </osm>
        """

        final shouldFail = new GroovyTestCase().&shouldFail

        shouldFail(IllegalDataException) {
            DataSet ds = getDataSet(doc)
        }
    }
    /**
     * An existing node with an invalid changeset id. That's a problem. An exception
     * is thrown.
     */
    @Test
    public void test_6() {
        String doc = """\
             <osm version="0.6">
            <node id="1" lat="0.0" lon="0.0" version="1" changeset="abc"/>
            </osm>
            """

        final shouldFail = new GroovyTestCase().&shouldFail

        shouldFail(IllegalDataException) {
            DataSet ds = getDataSet(doc)
        }
    }
}