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/*
 * Copyright (c) 2017 Mockito contributors
 * This program is made available under the terms of the MIT License.
 */
package org.mockito.internal.configuration.plugins;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import org.mockito.MockMakers;
import org.mockito.internal.util.MockUtil;
import org.mockito.plugins.AnnotationEngine;
import org.mockito.plugins.DoNotMockEnforcer;
import org.mockito.plugins.InstantiatorProvider2;
import org.mockito.plugins.MemberAccessor;
import org.mockito.plugins.MockMaker;
import org.mockito.plugins.MockitoLogger;
import org.mockito.plugins.MockitoPlugins;
import org.mockito.plugins.PluginSwitch;
import org.mockito.plugins.StackTraceCleanerProvider;

public class DefaultMockitoPlugins implements MockitoPlugins {

    private static final Map DEFAULT_PLUGINS = new HashMap<>();
    static final String INLINE_ALIAS = MockMakers.INLINE;
    static final String PROXY_ALIAS = MockMakers.PROXY;
    static final String SUBCLASS_ALIAS = MockMakers.SUBCLASS;
    public static final Set MOCK_MAKER_ALIASES = new HashSet<>();
    static final String MODULE_ALIAS = "member-accessor-module";
    static final String REFLECTION_ALIAS = "member-accessor-reflection";
    public static final Set MEMBER_ACCESSOR_ALIASES = new HashSet<>();

    static {
        // Keep the mapping: plugin interface name -> plugin implementation class name
        DEFAULT_PLUGINS.put(PluginSwitch.class.getName(), DefaultPluginSwitch.class.getName());
        DEFAULT_PLUGINS.put(
                MockMaker.class.getName(),
                "org.mockito.internal.creation.bytebuddy.InlineByteBuddyMockMaker");
        DEFAULT_PLUGINS.put(
                StackTraceCleanerProvider.class.getName(),
                "org.mockito.internal.exceptions.stacktrace.DefaultStackTraceCleanerProvider");
        DEFAULT_PLUGINS.put(
                InstantiatorProvider2.class.getName(),
                "org.mockito.internal.creation.instance.DefaultInstantiatorProvider");
        DEFAULT_PLUGINS.put(
                AnnotationEngine.class.getName(),
                "org.mockito.internal.configuration.InjectingAnnotationEngine");
        DEFAULT_PLUGINS.put(
                INLINE_ALIAS, "org.mockito.internal.creation.bytebuddy.InlineByteBuddyMockMaker");
        DEFAULT_PLUGINS.put(PROXY_ALIAS, "org.mockito.internal.creation.proxy.ProxyMockMaker");
        DEFAULT_PLUGINS.put(
                SUBCLASS_ALIAS, "org.mockito.internal.creation.bytebuddy.ByteBuddyMockMaker");
        DEFAULT_PLUGINS.put(
                MockitoLogger.class.getName(), "org.mockito.internal.util.ConsoleMockitoLogger");
        DEFAULT_PLUGINS.put(
                MemberAccessor.class.getName(),
                "org.mockito.internal.util.reflection.ModuleMemberAccessor");
        DEFAULT_PLUGINS.put(
                MODULE_ALIAS, "org.mockito.internal.util.reflection.ModuleMemberAccessor");
        DEFAULT_PLUGINS.put(
                REFLECTION_ALIAS, "org.mockito.internal.util.reflection.ReflectionMemberAccessor");
        DEFAULT_PLUGINS.put(
                DoNotMockEnforcer.class.getName(),
                "org.mockito.internal.configuration.DefaultDoNotMockEnforcer");

        MOCK_MAKER_ALIASES.add(INLINE_ALIAS);
        MOCK_MAKER_ALIASES.add(PROXY_ALIAS);
        MOCK_MAKER_ALIASES.add(SUBCLASS_ALIAS);

        MEMBER_ACCESSOR_ALIASES.add(MODULE_ALIAS);
        MEMBER_ACCESSOR_ALIASES.add(REFLECTION_ALIAS);
    }

    @Override
    public  T getDefaultPlugin(Class pluginType) {
        String className = DEFAULT_PLUGINS.get(pluginType.getName());
        return create(pluginType, className);
    }

    public static String getDefaultPluginClass(String classOrAlias) {
        return DEFAULT_PLUGINS.get(classOrAlias);
    }

    /**
     * Creates an instance of given plugin type, using specific implementation class.
     */
    private  T create(Class pluginType, String className) {
        if (className == null) {
            throw new IllegalStateException(
                    "No default implementation for requested Mockito plugin type: "
                            + pluginType.getName()
                            + "\n"
                            + "Is this a valid Mockito plugin type? If yes, please report this problem to Mockito team.\n"
                            + "Otherwise, please check if you are passing valid plugin type.\n"
                            + "Examples of valid plugin types: MockMaker, StackTraceCleanerProvider.");
        }
        try {
            // Default implementation. Use our own ClassLoader instead of the context
            // ClassLoader, as the default implementation is assumed to be part of
            // Mockito and may not be available via the context ClassLoader.
            return pluginType.cast(Class.forName(className).getDeclaredConstructor().newInstance());
        } catch (Exception e) {
            throw new IllegalStateException(
                    "Internal problem occurred, please report it. "
                            + "Mockito is unable to load the default implementation of class that is a part of Mockito distribution. "
                            + "Failed to load "
                            + pluginType,
                    e);
        }
    }

    @Override
    public MockMaker getInlineMockMaker() {
        return create(MockMaker.class, DEFAULT_PLUGINS.get(INLINE_ALIAS));
    }

    @Override
    public MockMaker getMockMaker(String mockMaker) {
        return MockUtil.getMockMaker(mockMaker);
    }
}