/*
 * Copyright 2015 Norbert Potocki (norbert.potocki@nort.pl)
 *
 * 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 org.cfg4j.source.files;

import static org.assertj.core.api.Assertions.assertThat;

import org.assertj.core.data.MapEntry;
import org.cfg4j.source.context.environment.DefaultEnvironment;
import org.cfg4j.source.context.environment.Environment;
import org.cfg4j.source.context.environment.ImmutableEnvironment;
import org.cfg4j.source.context.environment.MissingEnvironmentException;
import org.cfg4j.source.context.filesprovider.ConfigFilesProvider;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.mockito.runners.MockitoJUnitRunner;

import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.util.Arrays;
import java.util.Collections;


@RunWith(MockitoJUnitRunner.class)
public class FilesConfigurationSourceTest {

  @Rule
  public ExpectedException expectedException = ExpectedException.none();

  private TempConfigurationFileRepo fileRepo;
  private ConfigFilesProvider configFilesProvider;
  private FilesConfigurationSource source;
  private FileSystem fileSystem;
  private Environment environment;

  @Before
  public void setUp() throws Exception {
    fileRepo = new TempConfigurationFileRepo("cfg4j-test-repo");
    fileRepo.changeProperty("application.properties", "some.setting", "masterValue");
    fileRepo.changeProperty("otherConfig.properties", "otherConfig.setting", "masterValue");
    fileRepo.changeProperty("malformed.properties", "otherConfig.setting", "\\uzzzzz");
    fileRepo.changeProperty("otherApplicationConfigs/application.properties", "some.setting", "otherAppSetting");

    fileSystem = FileSystems.getDefault();

    environment = new ImmutableEnvironment(fileRepo.getURI());

    source = new FilesConfigurationSource();
  }

  @After
  public void tearDown() throws Exception {
    fileRepo.remove();
  }

  @Test
  public void getConfigurationShouldReadFromDefaultFile() throws Exception {
    assertThat(source.getConfiguration(environment)).containsOnly(MapEntry.entry("some.setting", "masterValue"));
  }

  @Test
  public void getConfigurationShouldReadFromHomeForDefaultEnvironment() throws Exception {
    System.setProperty("user.home", fileRepo.getURI() + "/otherApplicationConfigs");
    assertThat(source.getConfiguration(new DefaultEnvironment())).containsOnly(MapEntry.entry("some.setting", "otherAppSetting"));
  }

  @Test
  public void getConfigurationShouldReadFromGivenPath() throws Exception {
    Environment environment = new ImmutableEnvironment(fileRepo.getURI() + "/otherApplicationConfigs/");

    assertThat(source.getConfiguration(environment)).containsOnly(MapEntry.entry("some.setting", "otherAppSetting"));
  }

  @Test
  public void getConfigurationShouldReadFromGivenFiles() throws Exception {
    configFilesProvider = () -> Arrays.asList(
        fileSystem.getPath("application.properties"),
        fileSystem.getPath("otherConfig.properties")
    );

    source = new FilesConfigurationSource(configFilesProvider);
    assertThat(source.getConfiguration(environment)).containsOnlyKeys("some.setting", "otherConfig.setting");
  }

  @Test
  public void getConfigurationShouldThrowOnMissingEnvironment() throws Exception {
    expectedException.expect(MissingEnvironmentException.class);
    source.getConfiguration(new ImmutableEnvironment("awlerijawoetinawwerlkjn"));
  }

  @Test
  public void getConfigurationShouldThrowOnMissingConfigFile() throws Exception {
    fileRepo.deleteFile("application.properties");

    expectedException.expect(IllegalStateException.class);
    source.getConfiguration(environment);
  }

  @Test
  public void getConfigurationShouldThrowOnMalformedConfigFile() throws Exception {
    configFilesProvider = () -> Collections.singletonList(
        fileSystem.getPath("malformed.properties")
    );

    source = new FilesConfigurationSource(configFilesProvider);

    expectedException.expect(IllegalStateException.class);
    source.getConfiguration(environment);
  }

  @Test
  public void reloadShouldUpdateGetConfiguration() throws Exception {
    fileRepo.changeProperty("application.properties", "some.setting", "changedValue");
    source.reload();

    assertThat(source.getConfiguration(environment)).containsOnly(MapEntry.entry("some.setting", "changedValue"));
  }
}
@@ -1315,51 +1315,12 @@
 ile.
-FileSystem;%0Aimport java.nio.file.FileSystem
+Path
 s;%0Ai
@@ -1681,41 +1681,8 @@
 ce;%0A
-  private FileSystem fileSystem;%0A
   pr
@@ -2215,52 +2215,8 @@
 );%0A%0A
-    fileSystem = FileSystems.getDefault();%0A%0A
     
@@ -3381,34 +3381,25 @@
         
-fileSystem.getPath
+Paths.get
 (%22applic
@@ -3426,34 +3426,25 @@
         
-fileSystem.getPath
+Paths.get
 (%22otherC
@@ -4303,26 +4303,17 @@
     
-fileSystem.getPath
+Paths.get
 (%22ma

simplify Path usage in tests