/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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
 *
 *     http://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 org.apache.dubbo.config.utils;

import org.apache.dubbo.common.config.ReferenceCache;
import org.apache.dubbo.config.ApplicationConfig;
import org.apache.dubbo.config.RegistryConfig;
import org.apache.dubbo.config.bootstrap.DubboBootstrap;
import org.apache.dubbo.config.utils.service.FooService;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;

class ReferenceCacheTest {

    @BeforeEach
    public void setUp() throws Exception {
        DubboBootstrap.reset();
        MockReferenceConfig.setCounter(0);
        SimpleReferenceCache.CACHE_HOLDER.clear();
    }

    @Test
    void testGetCacheSameReference() throws Exception {
        ReferenceCache cache = SimpleReferenceCache.getCache();
        MockReferenceConfig config = buildMockReferenceConfig("org.apache.dubbo.config.utils.service.FooService", "group1", "1.0.0");
        assertEquals(0L, config.getCounter());
        Object proxy = cache.get(config);
        assertTrue(config.isGetMethodRun());

        // singleton reference config by default
        MockReferenceConfig configCopy = buildMockReferenceConfig("org.apache.dubbo.config.utils.service.FooService", "group1", "1.0.0");
        assertEquals(1L, configCopy.getCounter());
        Object proxyOfCopyConfig = cache.get(configCopy);
        assertFalse(configCopy.isGetMethodRun());

        assertEquals(1L, config.getCounter());
        assertEquals(1L, configCopy.getCounter());
        assertEquals(proxy, proxyOfCopyConfig);
    }

    @Test
    void testGetCacheDiffReference() throws Exception {
        ReferenceCache cache = SimpleReferenceCache.getCache();
        MockReferenceConfig config = buildMockReferenceConfig("org.apache.dubbo.config.utils.service.FooService", "group1", "1.0.0");
        assertEquals(0L, config.getCounter());
        cache.get(config);
        assertEquals(1L, config.getCounter());
        assertTrue(config.isGetMethodRun());
        cache.get(config);
        assertEquals(1L, config.getCounter());

        XxxMockReferenceConfig configCopy = buildXxxMockReferenceConfig("org.apache.dubbo.config.utils.service.XxxService", "group1", "1.0.0");
        assertEquals(0L, configCopy.getCounter());
        cache.get(configCopy);
        assertTrue(configCopy.isGetMethodRun());
        assertEquals(1L, configCopy.getCounter());
    }

    @Test
    void testGetCacheWithKey() throws Exception {
        ReferenceCache cache = SimpleReferenceCache.getCache();
        MockReferenceConfig config = buildMockReferenceConfig("org.apache.dubbo.config.utils.service.FooService", "group1", "1.0.0");
        FooService value = cache.get(config);
        assertEquals(value, cache.get("group1/org.apache.dubbo.config.utils.service.FooService:1.0.0", FooService.class));
    }

    @Test
    void testGetCacheDiffName() throws Exception {
        SimpleReferenceCache cache = SimpleReferenceCache.getCache();
        MockReferenceConfig config = buildMockReferenceConfig("org.apache.dubbo.config.utils.service.FooService", "group1", "1.0.0");
        assertEquals(0L, config.getCounter());
        cache.get(config);
        assertTrue(config.isGetMethodRun());
        assertEquals(1L, config.getCounter());

        cache = SimpleReferenceCache.getCache("foo");
        config = buildMockReferenceConfig("org.apache.dubbo.config.utils.service.FooService", "group1", "1.0.0");
        assertEquals(1L, config.getCounter());
        cache.get(config);
        // still init for the same ReferenceConfig if the cache is different
        assertTrue(config.isGetMethodRun());
        assertEquals(2L, config.getCounter());
    }

    @Test
    void testDestroy() throws Exception {
        SimpleReferenceCache cache = SimpleReferenceCache.getCache();
        MockReferenceConfig config = buildMockReferenceConfig("org.apache.dubbo.config.utils.service.FooService", "group1", "1.0.0");
        cache.get(config);
        XxxMockReferenceConfig configCopy = buildXxxMockReferenceConfig("org.apache.dubbo.config.utils.service.XxxService", "group1", "1.0.0");
        cache.get(configCopy);
        assertEquals(2, cache.getReferenceMap().size());
        cache.destroy(config);
        assertTrue(config.isDestroyMethodRun());
        assertEquals(1, cache.getReferenceMap().size());
        cache.destroy(configCopy);
        assertTrue(configCopy.isDestroyMethodRun());
        assertEquals(0, cache.getReferenceMap().size());
    }

    @Test
    void testDestroyAll() throws Exception {
        SimpleReferenceCache cache = SimpleReferenceCache.getCache();
        MockReferenceConfig config = buildMockReferenceConfig("org.apache.dubbo.config.utils.service.FooService", "group1", "1.0.0");
        cache.get(config);
        XxxMockReferenceConfig configCopy = buildXxxMockReferenceConfig("org.apache.dubbo.config.utils.service.XxxService", "group1", "1.0.0");
        cache.get(configCopy);
        assertEquals(2, cache.getReferenceMap().size());
        cache.destroyAll();
        assertTrue(config.isDestroyMethodRun());
        assertTrue(configCopy.isDestroyMethodRun());
        assertEquals(0, cache.getReferenceMap().size());
    }

    private MockReferenceConfig buildMockReferenceConfig(String service, String group, String version) {
        MockReferenceConfig config = new MockReferenceConfig();
        config.setApplication(new ApplicationConfig("cache"));
        config.setRegistry(new RegistryConfig("multicast://224.5.6.7:1234"));
        config.setCheck(false);
        config.setInterface(service);
        config.setGroup(group);
        config.setVersion(version);
        return config;
    }

    private XxxMockReferenceConfig buildXxxMockReferenceConfig(String service, String group, String version) {
        XxxMockReferenceConfig config = new XxxMockReferenceConfig();
        config.setApplication(new ApplicationConfig("cache"));
        config.setRegistry(new RegistryConfig("multicast://224.5.6.7:1234"));
        config.setInterface(service);
        config.setCheck(false);
        config.setGroup(group);
        config.setVersion(version);
        return config;
    }

}