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// Copyright (C) 2003-2009 by Object Mentor, Inc. All rights reserved.
// Released under the terms of the CPL Common Public License version 1.0.
package fitnesse.testsystems.slim.tables;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import fitnesse.slim.instructions.Instruction;
import fitnesse.testsystems.ExecutionResult;
import fitnesse.testsystems.TestResult;
import fitnesse.testsystems.TestSummary;
import fitnesse.testsystems.slim.SlimTestContext;
import fitnesse.testsystems.slim.Table;
import fitnesse.testsystems.slim.results.SlimExceptionResult;
import fitnesse.testsystems.slim.results.SlimTestResult;

public class TableTable extends SlimTable {

  public TableTable(Table table, String tableId, SlimTestContext slimTestContext) {
    super(table, tableId, slimTestContext);
  }

  @Override
  protected String getTableType() {
    return ("tableTable");
  }

  @Override
  public List getAssertions() {
    SlimAssertion make = constructFixture(getFixtureName());
    Instruction doTable = callFunction(getTableName(), "doTable", tableAsList());
    return Arrays.asList(make, makeAssertion(doTable, new TableTableExpectation()));
  }

  public class TableTableExpectation implements SlimExpectation {

    @Override
    public TestResult evaluateExpectation(Object tableReturn) {
      SlimTestResult testResult;
      if (tableReturn == null || "null".equals(tableReturn)) {
        testResult = SlimTestResult.ignore("No results from table");
        table.updateContent(table.getColumnCountInRow(0) - 1, 0, testResult);
      } else if (tableReturn instanceof String) {
        testResult = SlimTestResult.error((String) tableReturn);
        table.updateContent(0, 0, testResult);
      } else {
        TestSummary testSummary = resizeTableAndEvaluateRows(tableReturn);
        getTestContext().increment(testSummary);
        testResult = new SlimTestResult(ExecutionResult.getExecutionResult(testSummary));
        testResult.setVariables(getSymbolsToStore());
      }
      getTestContext().increment(testResult.getExecutionResult());
      return testResult;
    }

    @Override
    public SlimExceptionResult evaluateException(SlimExceptionResult exceptionResult) {
      table.updateContent(0, 0, exceptionResult);
      getTestContext().incrementErroredTestsCount();
      return exceptionResult;
    }
  }

  @SuppressWarnings("unchecked")
  private TestSummary resizeTableAndEvaluateRows(Object returnValue) {
    List> tableResults = (List>) returnValue;
    extendTable(table, tableResults);
    TestSummary testSummary = new TestSummary();
    for (int row = 0; row < tableResults.size(); row++)
      evaluateRow(tableResults, row, testSummary);
    return testSummary;
  }

  private void extendTable(Table table, List> tableResults) {
    addNewRows(table, tableResults);
    extendExistingRows(table, tableResults);
  }

  private void addNewRows(Table table, List> tableResults) {
    while (table.getRowCount() - 1 < tableResults.size()) {
      List l = new ArrayList<>();
      for (Object s : tableResults.get(table.getRowCount() - 1))
        l.add((String) s);
      table.addRow(l);
    }
  }

  private void extendExistingRows(Table table, List> tableResults) {
    for (int row = 1; row < table.getRowCount(); row++)
      extendRow(table, row, tableResults.get(row - 1));
  }

  private void extendRow(Table table, int row, List