/*
 * Copyright 2011 Jon S Akhtar (Sylvanaar)
 *
 *   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.sylvanaar.idea.Lua.util;

import com.intellij.openapi.fileTypes.FileTypeManager;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.io.FileUtil;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.psi.PsiFile;
import com.intellij.psi.PsiFileFactory;
import com.intellij.util.IncorrectOperationException;
import com.intellij.util.LocalTimeCounter;
import org.junit.Assert;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

/**
 * Utility class, that contains various methods for testing
 *
 * @author Ilya.Sergey
 */
public abstract class TestUtils {
  public static final String TEMP_FILE = "test.lua";
  public static final String CARET_MARKER = "<caret>";
  public static final String BEGIN_MARKER = "<begin>";
  public static final String END_MARKER = "<end>";

  public static PsiFile createPseudoPhysicalGroovyFile(final Project project,
                                                       final String text) throws IncorrectOperationException {
    return createPseudoPhysicalFile(project, TEMP_FILE, text);
  }


  public static PsiFile createPseudoPhysicalFile(final Project project,
                                                 final String fileName,
                                                 final String text) throws IncorrectOperationException {
    return PsiFileFactory.getInstance(project)
        .createFileFromText(fileName, FileTypeManager.getInstance().getFileTypeByFileName(fileName), text,
            LocalTimeCounter.currentTime(), true);
  }

  public static String getTestDataPath() {
    return FileUtil.toSystemIndependentName(System
        .getProperty("idea.lua.testdata-path", "") + "testdata/");
  }

  public static String removeBeginMarker(String text) {
    int index = text.indexOf(BEGIN_MARKER);
    return text.substring(0, index) + text.substring(index + BEGIN_MARKER.length());
  }

  public static String removeEndMarker(String text) {
    int index = text.indexOf(END_MARKER);
    return text.substring(0, index) + text.substring(index + END_MARKER.length());
  }

   public static String readFileAsString(String filePath) {
    String content;
    try {
      content = new String(FileUtil.loadFileText(new File(filePath)));
      content = StringUtil.replace(content, "\r", "");
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
    Assert.assertNotNull(content);
    return content;
   }

  public static List<String> readInput(String filePath) {
    String content = readFileAsString(filePath);

    List<String> input = new ArrayList<String>();

    int separatorIndex;

    // Adding input  before -----
    while ((separatorIndex = content.indexOf("-----")) >= 0) {
      input.add(content.substring(0, separatorIndex - 1));
      content = content.substring(separatorIndex);
      while (StringUtil.startsWithChar(content, '-')) {
        content = content.substring(1);
      }
      if (StringUtil.startsWithChar(content, '\n')) {
        content = content.substring(1);
      }
    }
    // Result - after -----
    if (content.endsWith("\n")) {
      content = content.substring(0, content.length() - 1);
    }
    input.add(content);

    Assert.assertTrue("No data found in source file", input.size() > 0);
    Assert.assertNotNull("Test output points to null", input.size() > 1);

    return input;
  }
}