package uk.ac.ox.zoo.seeg.abraid.mp.common.config;

import org.apache.commons.io.FileUtils;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;

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

/**
 * Tests the ConfigurationService class.
 * Copyright (c) 2014 University of Oxford
 */
public class ConfigurationServiceTest {
    @Rule
    public TemporaryFolder testFolder = new TemporaryFolder(); ///CHECKSTYLE:SUPPRESS VisibilityModifier

    private void writeStandardSimpleProperties(File testFile, String defaultRepoUrl, String defaultModelVersion)
            throws FileNotFoundException, UnsupportedEncodingException {
        PrintWriter writer = new PrintWriter(testFile, "UTF-8");
        writer.println("model.repo.url = " + defaultRepoUrl);
        writer.println("model.repo.version = " + defaultModelVersion);
        writer.close();
    }

    @Test
    public void setModelRepositoryUrlUpdatesFile() throws Exception {
        // Arrange
        File testFile = testFolder.newFile();
        writeStandardSimpleProperties(testFile, "initialValue3", "initialValue4");
        ConfigurationService target = new ConfigurationServiceImpl(testFile);

        String expectedUrl = "foo";

        // Act
        target.setModelRepositoryUrl(expectedUrl);

        // Assert
        assertThat(FileUtils.readFileToString(testFile)).contains("model.repo.url = " + expectedUrl);
    }

    @Test
    public void setModelRepositoryVersionUpdatesFile() throws Exception {
        // Arrange
        File testFile = testFolder.newFile();
        writeStandardSimpleProperties(testFile, "initialValue3", "initialValue4");
        ConfigurationService target = new ConfigurationServiceImpl(testFile);

        String expectedVersion = "foo";

        // Act
        target.setModelRepositoryVersion(expectedVersion);

        // Assert
        assertThat(FileUtils.readFileToString(testFile)).contains("model.repo.version = " + expectedVersion);
    }
    @Test
    public void getModelRepositoryUrlReturnsCorrectValue() throws Exception {
        // Arrange
        File testFile = testFolder.newFile();
        String expectedUrl = "foo";
        writeStandardSimpleProperties(testFile, expectedUrl, "initialValue4");
        ConfigurationService target = new ConfigurationServiceImpl(testFile);

        // Act
        String result = target.getModelRepositoryUrl();

        // Assert
        assertThat(result).isEqualTo(expectedUrl);
    }

    @Test
    public void getModelRepositoryVersionReturnsCorrectValue() throws Exception {
        // Arrange
        File testFile = testFolder.newFile();
        String expectedVersion = "foo";
        writeStandardSimpleProperties(testFile, "initialValue3", expectedVersion);
        ConfigurationService target = new ConfigurationServiceImpl(testFile);

        // Act
        String result = target.getModelRepositoryVersion();

        // Assert
        assertThat(result).isEqualTo(expectedVersion);
    }
}