/*
 * Copyright (c) 2016 Uber Technologies, Inc. (hoodie-dev-group@uber.com)
 *
 * 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.uber.hoodie.cli;

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

/**
 * Header for the table to be rendered
 */
public class TableHeader {

  // List of fields (columns)
  private final List<String> fieldNames = new ArrayList<>();

  /**
   * Add a field (column) to table
   *
   * @param fieldName field Name
   */
  public TableHeader addTableHeaderField(String fieldName) {
    fieldNames.add(fieldName);
    return this;
  }

  /**
   * Get all field names
   */
  public List<String> getFieldNames() {
    return fieldNames;
  }

  /**
   * Index of the field in the table
   *
   * @param fieldName Field Name
   */
  public int indexOf(String fieldName) {
    return fieldNames.indexOf(fieldName);
  }

  /**
   * Lookup field by offset
   */
  public String get(int index) {
    return fieldNames.get(index);
  }

  /**
   * Get number of fields in the table
   */
  public int getNumFields() {
    return fieldNames.size();
  }
}