package org.jboss.resteasy.test.request;

import org.jboss.resteasy.core.request.AcceptHeaders;
import org.jboss.resteasy.core.request.QualityValue;
import org.jboss.resteasy.spi.BadRequestException;
import org.junit.Test;

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

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.fail;

/**
 * @tpSubChapter Requests
 * @tpChapter Unit tests
 * @tpTestCaseDetails Test for AcceptHeaders and QualityValue classes, string type.
 * @tpSince RESTEasy 3.0.16
 */
public class StringQualityValueTest {

    private static void assertList(String header, String[] fields, QualityValue[] qualities) {
        Map<String, QualityValue> map = AcceptHeaders.getStringQualityValues(header);
        List<String> expectedKeys = Arrays.asList(fields);
        List<QualityValue> expectedValues = Arrays.asList(qualities);
        assertEquals("Wrong keys in map", expectedKeys, new ArrayList<String>(map.keySet()));
        assertEquals("Wrong values in map", expectedValues, new ArrayList<QualityValue>(map.values()));
    }

    /**
     * @tpTestDetails Test for simple values.
     * @tpSince RESTEasy 3.0.16
     */
    @Test
    public void simple() {
        String[] fields = {"compress", "gzip"};
        QualityValue[] qualities = {
                QualityValue.DEFAULT,
                QualityValue.DEFAULT
        };
        assertList("compress, gzip", fields, qualities);
        assertList(" compress,gzip ", fields, qualities);
        assertList("compress ,gzip", fields, qualities);
    }

    /**
     * @tpTestDetails Test for special parameters.
     * @tpSince RESTEasy 3.0.16
     */
    @Test
    public void parameter() {
        String header = "iso-8859-5, unicode-1-1;q=0.8";
        String[] fields = {"iso-8859-5", "unicode-1-1"};
        QualityValue[] qualities = {
                QualityValue.DEFAULT,
                QualityValue.valueOf("0.8")
        };
        assertList(header, fields, qualities);
    }

    /**
     * @tpTestDetails Test for * in header.
     * @tpSince RESTEasy 3.0.16
     */
    @Test
    public void wildcard() {
        String header = "*";
        String[] fields = {null};
        QualityValue[] qualities = {QualityValue.DEFAULT};
        assertList(header, fields, qualities);
    }

    /**
     * @tpTestDetails Test for wildcard with parameter.
     * @tpSince RESTEasy 3.0.16
     */
    @Test
    public void wildcardWithParameter() {
        String header = "gzip;q=1.0, identity; q=0.5, *;q=0";
        String[] fields = {"gzip", "identity", null};
        QualityValue[] qualities = {
                QualityValue.valueOf("1.0"),
                QualityValue.valueOf("0.5"),
                QualityValue.valueOf("0")
        };
        assertList(header, fields, qualities);
    }

    /**
     * @tpTestDetails Bad requests test.
     * @tpSince RESTEasy 3.0.16
     */
    @Test
    public void badRequests() {
        String[] badHeaders = {
                " ,b,c",      // empty fields
                "a, ,c",
                "a,b, ",
                ",",
                "a;",         // empty parameters
                "a;,b",
                "a;x=0",      // illegal parameters
                "a;q=0.1;q=0.1",
                "a;illegal"
        };
        for (String header : badHeaders) {
            try {
                AcceptHeaders.getStringQualityValues(header);
                fail(header);
            } catch (BadRequestException e) {
            }
        }
    }

    /**
     * @tpTestDetails Check empty values.
     * @tpSince RESTEasy 3.0.16
     */
    @Test
    public void empty() {
        assertNull(AcceptHeaders.getStringQualityValues(null));
        assertNull(AcceptHeaders.getStringQualityValues(""));
        assertNull(AcceptHeaders.getStringQualityValues(" "));
    }

}