/**
 * Copyright 2012 Kjetil Ørbekk <kjetil.orbekk@gmail.com>
 *
 * 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 com.orbekk.same.android;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import com.orbekk.same.Variable;
import com.orbekk.util.DelayedOperation;

public class VariableTestActivity extends Activity {
    private Logger logger = LoggerFactory.getLogger(getClass());
    private ClientInterfaceBridge client;
    private Variable<String> variable;
    
    private Variable.OnChangeListener<String> onChangeListener =
            new Variable.OnChangeListener<String>() {
        @Override
        public void valueChanged(Variable<String> unused) {
            variable.update();
            displayVariable();
        }
    };
    
    private class UpdateVariableTask
            extends AsyncTask<String, Void, DelayedOperation.Status> {
        @Override protected DelayedOperation.Status doInBackground(String... values) {
            String value = values[0];
            return variable.set(value).getStatus();
        }
        
        @Override protected void onPostExecute(DelayedOperation.Status status) {
            if (!status.isOk()) {
                Toast.makeText(VariableTestActivity.this,
                        "Update failed: " + status, Toast.LENGTH_SHORT)
                                .show();
            }
        }
    }
    
    private void displayVariable() {
        TextView tv = (TextView)findViewById(R.id.variable_text);
        if (variable.get() != null) {
            tv.setText(variable.get());
        }
    }
    
    public void setVariable(View unused) {
        EditText et = (EditText)findViewById(R.id.set_variable_text);
        String newValue = et.getText().toString();
        new UpdateVariableTask().execute(newValue);
    }
    
    @Override public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.variable_test);
    }
    
    @Override public void onResume() {
        super.onResume();
        client = new ClientInterfaceBridge(this);
        client.connect();
        variable = client.createVariableFactory()
                .createString("TestVariable");
        variable.addOnChangeListener(onChangeListener);
        variable.set("Hello, World!");
        displayVariable();
    }
    
    @Override public void onStop() {
        super.onStop();
        variable.removeOnChangeListener(onChangeListener);
        client.disconnect();
    }
}