/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.jclouds.chef.internal;

import static org.jclouds.reflect.Types2.checkBound;

import java.io.File;
import java.io.IOException;
import java.util.Properties;

import org.jclouds.apis.BaseApiLiveTest;
import org.jclouds.chef.ChefApi;
import org.jclouds.chef.ChefService;
import org.jclouds.json.Json;
import org.testng.annotations.Test;

import com.google.common.base.Charsets;
import com.google.common.base.Throwables;
import com.google.common.io.Files;
import com.google.common.reflect.TypeToken;
import com.google.inject.Injector;
import com.google.inject.Module;

@Test(groups = "live")
public abstract class BaseChefLiveTest<A extends ChefApi> extends BaseApiLiveTest<A> {

   protected Injector injector;
   protected ChefService chefService;
   protected Json json;

   protected BaseChefLiveTest() {
      provider = "chef";
   }

   /**
    * the credential is a path to the pem file.
    */
   @Override
   protected Properties setupProperties() {
      Properties overrides = super.setupProperties();
      credential = setCredentialFromPemFile(overrides, identity, provider + ".credential");
      return overrides;
   }

   @Override
   protected void initialize() {
      super.initialize();
      chefService = injector.getInstance(ChefService.class);
      json = injector.getInstance(Json.class);
   }

   @Override
   protected A create(Properties props, Iterable<Module> modules) {
      injector = newBuilder().modules(modules).overrides(props).buildInjector();
      return injector.getInstance(resolveApiClass());
   }

   protected String setCredentialFromPemFile(Properties overrides, String identity, String key) {
      String val = null;
      String credentialFromFile = null;
      if (System.getProperties().containsKey("test." + key)) {
         val = System.getProperty("test." + key);
      } else {
         val = System.getProperty("user.home") + "/.chef/" + identity + ".pem";
      }
      try {
         credentialFromFile = Files.toString(new File(val), Charsets.UTF_8);
      } catch (IOException e) {
         throw Throwables.propagate(e);
      }
      overrides.setProperty(key, credentialFromFile);
      return credentialFromFile;
   }

   @SuppressWarnings("unchecked")
   private Class<A> resolveApiClass() {
      return Class.class.cast(checkBound(new TypeToken<A>(getClass()) {
         private static final long serialVersionUID = 1L;
      }).getRawType());
   }

}