/*
 * Copyright 2011 Greg Milette and Adam Stroud
 * 
 * Licensed 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 root.gast.speech.voiceaction;

import java.util.List;

import root.gast.R;
import android.content.Context;

/**
 * respond depending on why not understanding occured
 * 
 * @author Greg Milette <<a
 *         href="mailto:gregorym@gmail.com">gregorym@gmail.com</a>>
 */
public class WhyNotUnderstoodListener implements OnNotUnderstoodListener
{
    private Context context;
    private boolean retry;
    private VoiceActionExecutor executor;

    public WhyNotUnderstoodListener(Context context,
            VoiceActionExecutor executor, boolean retry)
    {
        this.context = context;
        this.executor = executor;
        this.retry = retry;
    }

    @Override
    public void notUnderstood(List<String> heard, int reason)
    {
        String prompt;
        switch (reason)
        {
            case OnNotUnderstoodListener.REASON_INACCURATE_RECOGNITION:
                prompt =
                        context.getResources().getString(
                                R.string.voiceaction_inaccurate);
                break;
            case OnNotUnderstoodListener.REASON_NOT_A_COMMAND:
                String firstMatchingWord = heard.get(0);
                String promptFormat =
                        context.getResources().getString(
                                R.string.voiceaction_not_command);
                prompt = String.format(promptFormat, firstMatchingWord);
                break;
            case OnNotUnderstoodListener.REASON_UNKNOWN:
            default:
                prompt =
                        context.getResources().getString(
                                R.string.voiceaction_unknown);
                break;
        }

        if (retry)
        {
            String retryPrompt =
                    context.getResources().getString(
                            R.string.voiceaction_retry);
            prompt = prompt + retryPrompt;
            executor.reExecute(prompt);
        } else
        {
            executor.speak(prompt);
        }
    }
}