/*
* Copyright 2015 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
*   https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/

package io.netty.util;

import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.function.Executable;

import java.util.Map;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;

@SuppressWarnings("deprecation")
public class DomainNameMappingTest {

    // Deprecated API

    @Test
    public void testNullDefaultValueInDeprecatedApi() {
        assertThrows(NullPointerException.class, new Executable() {
            @Override
            public void execute() {
                new DomainNameMapping<String>(null);
            }
        });
    }

    @Test
    public void testNullDomainNamePatternsAreForbiddenInDeprecatedApi() {
        assertThrows(NullPointerException.class, new Executable() {
            @Override
            public void execute() {
                new DomainNameMapping<String>("NotFound").add(null, "Some value");
            }
        });
    }

    @Test
    public void testNullValuesAreForbiddenInDeprecatedApi() {
        assertThrows(NullPointerException.class, new Executable() {
            @Override
            public void execute() {
                new DomainNameMapping<String>("NotFound").add("Some key", null);
            }
        });
    }

    @Test
    public void testDefaultValueInDeprecatedApi() {
        DomainNameMapping<String> mapping = new DomainNameMapping<String>("NotFound");

        assertEquals("NotFound", mapping.map("not-existing"));

        mapping.add("*.netty.io", "Netty");

        assertEquals("NotFound", mapping.map("not-existing"));
    }

    @Test
    public void testStrictEqualityInDeprecatedApi() {
        DomainNameMapping<String> mapping = new DomainNameMapping<String>("NotFound")
            .add("netty.io", "Netty")
            .add("downloads.netty.io", "Netty-Downloads");

        assertEquals("Netty", mapping.map("netty.io"));
        assertEquals("Netty-Downloads", mapping.map("downloads.netty.io"));

        assertEquals("NotFound", mapping.map("x.y.z.netty.io"));
    }

    @Test
    public void testWildcardMatchesAnyPrefixInDeprecatedApi() {
        DomainNameMapping<String> mapping = new DomainNameMapping<String>("NotFound")
            .add("*.netty.io", "Netty");

        assertEquals("Netty", mapping.map("netty.io"));
        assertEquals("Netty", mapping.map("downloads.netty.io"));
        assertEquals("Netty", mapping.map("x.y.z.netty.io"));

        assertEquals("NotFound", mapping.map("netty.io.x"));
    }

    @Test
    public void testFirstMatchWinsInDeprecatedApi() {
        assertEquals("Netty",
            new DomainNameMapping<String>("NotFound")
                .add("*.netty.io", "Netty")
                .add("downloads.netty.io", "Netty-Downloads")
                .map("downloads.netty.io"));

        assertEquals("Netty-Downloads",
            new DomainNameMapping<String>("NotFound")
                .add("downloads.netty.io", "Netty-Downloads")
                .add("*.netty.io", "Netty")
                .map("downloads.netty.io"));
    }

    @Test
    public void testToStringInDeprecatedApi() {
        DomainNameMapping<String> mapping = new DomainNameMapping<String>("NotFound")
            .add("*.netty.io", "Netty")
            .add("downloads.netty.io", "Netty-Downloads");

        assertEquals(
            "DomainNameMapping(default: NotFound, map: {*.netty.io=Netty, downloads.netty.io=Netty-Downloads})",
            mapping.toString());
    }

    // Immutable DomainNameMapping Builder API

    @Test
    public void testNullDefaultValue() {
        assertThrows(NullPointerException.class, new Executable() {
            @Override
            public void execute() {
                new DomainNameMappingBuilder<String>(null);
            }
        });
    }

    @Test
    public void testNullDomainNamePatternsAreForbidden() {
        assertThrows(NullPointerException.class, new Executable() {
            @Override
            public void execute() {
                new DomainNameMappingBuilder<String>("NotFound").add(null, "Some value");
            }
        });
    }

    @Test
    public void testNullValuesAreForbidden() {

        assertThrows(NullPointerException.class, new Executable() {
            @Override
            public void execute() {
                new DomainNameMappingBuilder<String>("NotFound").add("Some key", null);
            }
        });
    }

    @Test
    public void testDefaultValue() {
        DomainNameMapping<String> mapping = new DomainNameMappingBuilder<String>("NotFound")
            .add("*.netty.io", "Netty")
            .build();

        assertEquals("NotFound", mapping.map("not-existing"));
    }

    @Test
    public void testStrictEquality() {
        DomainNameMapping<String> mapping = new DomainNameMappingBuilder<String>("NotFound")
            .add("netty.io", "Netty")
            .add("downloads.netty.io", "Netty-Downloads")
            .build();

        assertEquals("Netty", mapping.map("netty.io"));
        assertEquals("Netty-Downloads", mapping.map("downloads.netty.io"));

        assertEquals("NotFound", mapping.map("x.y.z.netty.io"));
    }

    @Test
    public void testWildcardMatchesAnyPrefix() {
        DomainNameMapping<String> mapping = new DomainNameMappingBuilder<String>("NotFound")
            .add("*.netty.io", "Netty")
            .build();

        assertEquals("Netty", mapping.map("netty.io"));
        assertEquals("Netty", mapping.map("downloads.netty.io"));
        assertEquals("Netty", mapping.map("x.y.z.netty.io"));

        assertEquals("NotFound", mapping.map("netty.io.x"));
    }

    @Test
    public void testFirstMatchWins() {
        assertEquals("Netty",
            new DomainNameMappingBuilder<String>("NotFound")
                .add("*.netty.io", "Netty")
                .add("downloads.netty.io", "Netty-Downloads")
                .build()
                .map("downloads.netty.io"));

        assertEquals("Netty-Downloads",
            new DomainNameMappingBuilder<String>("NotFound")
                .add("downloads.netty.io", "Netty-Downloads")
                .add("*.netty.io", "Netty")
                .build()
                .map("downloads.netty.io"));
    }

    @Test
    public void testToString() {
        DomainNameMapping<String> mapping = new DomainNameMappingBuilder<String>("NotFound")
            .add("*.netty.io", "Netty")
            .add("downloads.netty.io", "Netty-Download")
            .build();

        assertEquals(
            "ImmutableDomainNameMapping(default: NotFound, map: {*.netty.io=Netty, downloads.netty.io=Netty-Download})",
            mapping.toString());
    }

    @Test
    public void testAsMap() {
        DomainNameMapping<String> mapping = new DomainNameMapping<String>("NotFound")
            .add("netty.io", "Netty")
            .add("downloads.netty.io", "Netty-Downloads");

        Map<String, String> entries = mapping.asMap();

        assertEquals(2, entries.size());
        assertEquals("Netty", entries.get("netty.io"));
        assertEquals("Netty-Downloads", entries.get("downloads.netty.io"));
    }

    @Test
    public void testAsMapWithImmutableDomainNameMapping() {
        DomainNameMapping<String> mapping = new DomainNameMappingBuilder<String>("NotFound")
            .add("netty.io", "Netty")
            .add("downloads.netty.io", "Netty-Downloads")
            .build();

        Map<String, String> entries = mapping.asMap();

        assertEquals(2, entries.size());
        assertEquals("Netty", entries.get("netty.io"));
        assertEquals("Netty-Downloads", entries.get("downloads.netty.io"));
    }
}
