/*

 * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * This is pluggable context used by test for 6398614

 */

import javax.script.*;

import java.util.*;

import java.io.*;

public class MyContext  implements ScriptContext {

    public static final int APP_SCOPE = 125;

    protected Writer writer;

    protected Writer errorWriter;

    protected Reader reader;

    protected Bindings appScope;

    protected Bindings engineScope;

    protected Bindings globalScope;

    public MyContext() {

        appScope = new SimpleBindings();

        engineScope = new SimpleBindings();

        globalScope = null;

        reader = new InputStreamReader(System.in);

        writer = new PrintWriter(System.out , true);

        errorWriter = new PrintWriter(System.err, true);

    }

    public void setBindings(Bindings bindings, int scope) {

        switch (scope) {

            case APP_SCOPE:

                if (bindings == null) {

                    throw new NullPointerException("App scope cannot be null.");

                }

                appScope = bindings;

                break;

            case ENGINE_SCOPE:

                if (bindings == null) {

                    throw new NullPointerException("Engine scope cannot be null.");

                }

                engineScope = bindings;

                break;

            case GLOBAL_SCOPE:

                globalScope = bindings;

                break;

            default:

                throw new IllegalArgumentException("Invalid scope value.");

        }

    }

    public Object getAttribute(String name) {

        if (engineScope.containsKey(name)) {

            return getAttribute(name, ENGINE_SCOPE);

        } else if (appScope.containsKey(name)) {

            return getAttribute(name, APP_SCOPE);

        } else if (globalScope != null && globalScope.containsKey(name)) {

            return getAttribute(name, GLOBAL_SCOPE);

        }

        return null;

    }

    public Object getAttribute(String name, int scope) {

        switch (scope) {

            case APP_SCOPE:

                return appScope.get(name);

            case ENGINE_SCOPE:

                return engineScope.get(name);

            case GLOBAL_SCOPE:

                if (globalScope != null) {

                    return globalScope.get(name);

                }

                return null;

            default:

                throw new IllegalArgumentException("Illegal scope value.");

        }

    }

    public Object removeAttribute(String name, int scope) {

        switch (scope) {

            case APP_SCOPE:

                if (getBindings(APP_SCOPE) != null) {

                    return getBindings(APP_SCOPE).remove(name);

                }

                return null;

            case ENGINE_SCOPE:

                if (getBindings(ENGINE_SCOPE) != null) {

                    return getBindings(ENGINE_SCOPE).remove(name);

                }

                return null;

            case GLOBAL_SCOPE:

                if (getBindings(GLOBAL_SCOPE) != null) {

                    return getBindings(GLOBAL_SCOPE).remove(name);

                }

                return null;

            default:

                throw new IllegalArgumentException("Illegal scope value.");

        }

    }

    public void setAttribute(String name, Object value, int scope) {

        switch (scope) {

            case APP_SCOPE:

                appScope.put(name, value);

                return;

            case ENGINE_SCOPE:

                engineScope.put(name, value);

                return;

            case GLOBAL_SCOPE:

                if (globalScope != null) {

                    globalScope.put(name, value);

                }

                return;

            default:

                throw new IllegalArgumentException("Illegal scope value.");

        }

    }

    public Writer getWriter() {

        return writer;

    }

    public Reader getReader() {

        return reader;

    }

    public void setReader(Reader reader) {

        this.reader = reader;

    }

    public void setWriter(Writer writer) {

        this.writer = writer;

    }

    public Writer getErrorWriter() {

        return errorWriter;

    }

    public void setErrorWriter(Writer writer) {

        this.errorWriter = writer;

    }

    public int getAttributesScope(String name) {

        if (engineScope.containsKey(name)) {

            return ENGINE_SCOPE;

        } else if (appScope.containsKey(name)) {

            return APP_SCOPE;

        } else if (globalScope != null && globalScope.containsKey(name)) {

            return GLOBAL_SCOPE;

        } else {

            return -1;

        }

    }

    public Bindings getBindings(int scope) {

        if (scope == ENGINE_SCOPE) {

            return engineScope;

        } else if (scope == APP_SCOPE) {

            return appScope;

        } else if (scope == GLOBAL_SCOPE) {

            return globalScope;

        } else {

            throw new IllegalArgumentException("Illegal scope value.");

        }

    }

    public List<Integer> getScopes() {

        return scopes;

    }

    private static List<Integer> scopes;

    static {

        scopes = new ArrayList<Integer>(3);

        scopes.add(ENGINE_SCOPE);

        scopes.add(APP_SCOPE);

        scopes.add(GLOBAL_SCOPE);

        scopes = Collections.unmodifiableList(scopes);

    }

}