/*******************************************************************************
 * Copyright (c) 2012, Directors of the Tyndale STEP Project
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met:
 * 
 * Redistributions of source code must retain the above copyright 
 * notice, this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright 
 * notice, this list of conditions and the following disclaimer in 
 * the documentation and/or other materials provided with the 
 * distribution.
 * Neither the name of the Tyndale House, Cambridge (www.TyndaleHouse.com)  
 * nor the names of its contributors may be used to endorse or promote 
 * products derived from this software without specific prior written 
 * permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
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 ******************************************************************************/
package com.tyndalehouse.step.rest.framework;

import java.util.HashMap;
import java.util.Map;

import com.google.inject.Singleton;
import com.tyndalehouse.step.core.exceptions.RequiresLoginException;
import com.tyndalehouse.step.core.exceptions.StepInternalException;
import com.tyndalehouse.step.models.ClientOperation;

/**
 * Resolves errors based on the type of exception thrown
 * 
 * @author chrisburrell
 * 
 */
@Singleton
public class ClientErrorResolver {
    private final Map<Class<? extends StepInternalException>, ClientOperation> clientOperations = new HashMap<Class<? extends StepInternalException>, ClientOperation>();

    /**
     * sets up the redirections
     */
    public ClientErrorResolver() {
        this.clientOperations.put(RequiresLoginException.class, ClientOperation.SHOW_LOGIN_POPUP);
    }

    /**
     * returns from the internal map what action should be performed if any
     * 
     * @param clazz a client operation
     * @return the client operation corresponding to the exception
     */
    public ClientOperation resolve(final Class<? extends Throwable> clazz) {
        return this.clientOperations.get(clazz);
    }
}