package com.intellij.codeInsight.completion;

import com.intellij.JavaTestUtil;
import com.intellij.openapi.fileEditor.FileDocumentManager;
import com.intellij.openapi.util.text.LineTokenizer;
import com.intellij.openapi.vfs.LocalFileSystem;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.codeStyle.CodeStyleSettings;
import com.intellij.psi.codeStyle.CodeStyleSettingsManager;

import java.io.IOException;

public class VariablesCompletionTest extends CompletionTestCase {
  public static final String FILE_PREFIX = "/codeInsight/completion/variables/";

  @Override
  protected String getTestDataPath() {
    return JavaTestUtil.getJavaTestDataPath();
  }

  public void testObjectVariable() throws Exception {
    configureByFile(FILE_PREFIX + "locals/" + getTestName(false) + ".java");
    checkResultByFile(FILE_PREFIX + "locals/" + getTestName(false) + "_after.java");
  }

  public void testStringVariable() throws Exception {
    configureByFile(FILE_PREFIX + "locals/" + getTestName(false) + ".java");
    checkResultByFile(FILE_PREFIX + "locals/" + getTestName(false) + "_after.java");
  }

  public void testInputMethodEventVariable() throws Exception {
    createClass("package java.awt.event; public interface InputMethodEvent {}");

    configureByFile(FILE_PREFIX + "locals/" + getTestName(false) + ".java");
    checkResultByFile(FILE_PREFIX + "locals/" + getTestName(false) + "_after.java");
  }

  public void testLocals1() throws Exception {
    configureByFile(FILE_PREFIX + "locals/" + "TestSource1.java");
    checkResultByFile(FILE_PREFIX + "locals/" + "TestResult1.java");
  }

  public void testLocals2() throws Exception {
    configureByFile(FILE_PREFIX + "locals/" + "TestSource2.java");
    compareLookup(FILE_PREFIX + "locals/test2-lst.txt");
    checkResultByFile(FILE_PREFIX + "locals/" + "TestResult2.java");
  }

  public void testLocals3() throws Exception {
    configureByFile(FILE_PREFIX + "locals/" + "TestSource3.java");
    checkResultByFile(FILE_PREFIX + "locals/" + "TestResult3.java");
  }

  public void testLocals4() throws Exception {
    configureByFile(FILE_PREFIX + "locals/" + "TestSource4.java");
    checkResultByFile(FILE_PREFIX + "locals/" + "TestResult4.java");
  }

  public void testLocals5() throws Exception {
    configureByFile(FILE_PREFIX + "locals/" + "TestSource5.java");
    checkResultByFile(FILE_PREFIX + "locals/" + "TestResult5.java");
  }

  public void testLocals6() throws Exception {
    configureByFile(FILE_PREFIX + "locals/" + "TestSource6.java");
    checkResultByFile(FILE_PREFIX + "locals/" + "TestResult6.java");
  }

  public void testLocals7() throws Exception {
    configureByFile(FILE_PREFIX + "locals/" + "TestSource7.java");
    checkResultByFile(FILE_PREFIX + "locals/" + "TestResult7.java");
  }

  public void testLocals8() throws Exception {
    configureByFile(FILE_PREFIX + "locals/" + "TestSource8.java");
    checkResultByFile(FILE_PREFIX + "locals/" + "TestResult8.java");
  }

  public void testFieldNameCompletion1() throws Exception {
    configureByFileNoCompletion(FILE_PREFIX + "locals/" + "FieldNameCompletion1.java");
    CodeStyleSettings settings = CodeStyleSettingsManager.getSettings(myProject);
    String oldPrefix = settings.FIELD_NAME_PREFIX;
    settings.FIELD_NAME_PREFIX = "my";
    complete();
    settings.FIELD_NAME_PREFIX = oldPrefix;
    checkResultByFile(FILE_PREFIX + "locals/" + "FieldNameCompletion1-result.java");
  }

  public void testFieldNameCompletion2() throws Exception {
    configureByFileNoCompletion(FILE_PREFIX + "locals/" + "FieldNameCompletion2.java");
    CodeStyleSettings settings = CodeStyleSettingsManager.getSettings(myProject);
    String oldPrefix = settings.FIELD_NAME_PREFIX;
    settings.FIELD_NAME_PREFIX = "my";
    complete();
    settings.FIELD_NAME_PREFIX = oldPrefix;
    checkResultByFile(FILE_PREFIX + "locals/" + "FieldNameCompletion2-result.java");
  }

  public void testFieldNameCompletion3() throws Exception {
    configureByFileNoCompletion(FILE_PREFIX + "locals/" + "FieldNameCompletion3.java");
    CodeStyleSettings settings = CodeStyleSettingsManager.getSettings(myProject);
    String oldPrefix = settings.FIELD_NAME_PREFIX;
    settings.FIELD_NAME_PREFIX = "my";
    complete();
    settings.FIELD_NAME_PREFIX = oldPrefix;
    checkResultByFile(FILE_PREFIX + "locals/" + "FieldNameCompletion3-result.java");
  }

  public void testLocals9() throws Exception {
    configureByFile(FILE_PREFIX + "locals/" + "TestSource9.java");
    checkResultByFile(FILE_PREFIX + "locals/" + "TestResult9.java");
  }

  public void testFieldOutOfAnonymous() throws Exception {
    configureByFile(FILE_PREFIX + "locals/" + "TestFieldOutOfAnonymous.java");
    complete();
    checkResultByFile(FILE_PREFIX + "locals/" + "TestFieldOutOfAnonymousResult.java");
  }
  
  public void testUnresolvedMethodName() throws Exception {
    configureByFile(FILE_PREFIX + "locals/" + "UnresolvedMethodName.java");
    complete();
    checkResultByFile(FILE_PREFIX + "locals/" + "UnresolvedMethodName.java");
    doTestByCount(2, "creAnInt", "createStylesheetCombobox");
  }

  public void testArrayMethodName() throws Throwable {
    configureByFile(FILE_PREFIX + "locals/" + "ArrayMethodName.java");
    checkResultByFile(FILE_PREFIX + "locals/" + "ArrayMethodName-result.java");
  }

  public void testNoKeywordsInForLoopVariableName() throws Throwable {
    configureByFile(FILE_PREFIX + getTestName(false) + ".java");
    assertStringItems("stringBuffer", "buffer");
  }

  protected void compareLookup(String fileName) throws IOException{
    String fullPath = getTestDataPath() + fileName;
    VirtualFile result = LocalFileSystem.getInstance().findFileByPath(fullPath);
    assertNotNull("file " + fullPath + " not found", result);


    assertStringItems(LineTokenizer.tokenize(FileDocumentManager.getInstance().getDocument(result).getCharsSequence(), false));
  }
}