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/*
 * Copyright 2015 Objectos, Fábrica de Software LTDA.
 *
 * 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 br.com.objectos.flat;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;

/**
 * @author [email protected] (Marcio Endo)
 */
public class RecordWriter {

  private final List fieldList = new ArrayList<>();

  private final Appendable out;

  RecordWriter(Appendable out) {
    this.out = out;
  }

  @Override
  public String toString() {
    return out.toString();
  }

  public  RecordWriter custom(T value, int length, CustomFormatter formatter) {
    fieldList.add(CustomField.get(value, length, formatter));
    return this;
  }

  public RecordWriter decimal(double value, int precision, int scale, DecimalOption... options) {
    fieldList.add(DoubleField.get(value, precision, scale, options));
    return this;
  }

  public RecordWriter fixed(String text) {
    fieldList.add(FixedField.get(text));
    return this;
  }

  public RecordWriter flatEnum(Enum value, int length) {
    fieldList.add(FlatEnumField.get(value, length));
    return this;
  }

  public RecordWriter integer(int value, int length, IntegerOption... options) {
    fieldList.add(IntegerField.get(value, length, options));
    return this;
  }

  public RecordWriter localDate(LocalDate date, LocalDatePattern pattern) {
    fieldList.add(LocalDateField.get(date, pattern));
    return this;
  }

  public LocalDateWriter localDate(Optional maybe, LocalDatePattern pattern) {
    return new LocalDateWriter(maybe, pattern);
  }

  public RecordWriter localDateTime(LocalDateTime dateTime, LocalDateTimePattern pattern) {
    fieldList.add(LocalDateTimeField.get(dateTime, pattern));
    return this;
  }

  public LocalDateTimeWriter localDateTime(Optional maybe, LocalDateTimePattern pattern) {
    return new LocalDateTimeWriter(maybe, pattern);
  }

  public RecordWriter text(String text, int length, TextOption... options) {
    fieldList.add(TextField.get(text, length, options));
    return this;
  }

  public DoubleValueConditionWriter when(DoubleValueCondition condition, String text) {
    return new DoubleValueConditionWriter(condition, text);
  }

  public IntValueConditionWriter when(IntValueCondition condition, String text) {
    return new IntValueConditionWriter(condition, text);
  }

  public RecordWriter write() {
    fieldList.add(NewLineField.get());

    for (Field field : fieldList) {
      field.writeTo(out);
    }

    return this;
  }

  public class DoubleValueConditionWriter {

    private final DoubleValueCondition condition;
    private final String text;

    public DoubleValueConditionWriter(DoubleValueCondition condition, String text) {
      this.condition = condition;
      this.text = text;
    }

    public RecordWriter decimal(double value, int precision, int scale, DecimalOption... options) {
      fieldList.add(DoubleField.get(value, precision, scale, condition, text, options));
      return RecordWriter.this;
    }

  }

  public class IntValueConditionWriter {

    private final IntValueCondition condition;
    private final String text;

    public IntValueConditionWriter(IntValueCondition condition, String text) {
      this.condition = condition;
      this.text = text;
    }

    public RecordWriter integer(int value, int length, IntegerOption... options) {
      fieldList.add(IntegerField.get(value, length, condition, text, options));
      return RecordWriter.this;
    }

  }

  public class LocalDateWriter {

    private final Optional maybe;
    private final LocalDatePattern pattern;

    private LocalDateWriter(Optional maybe, LocalDatePattern pattern) {
      this.maybe = maybe;
      this.pattern = pattern;
    }

    public RecordWriter or(String defaultValue) {
      fieldList.add(LocalDateField.get(maybe, pattern, defaultValue));
      return RecordWriter.this;
    }

  }

  public class LocalDateTimeWriter {

    private final Optional maybe;
    private final LocalDateTimePattern pattern;

    private LocalDateTimeWriter(Optional maybe, LocalDateTimePattern pattern) {
      this.maybe = maybe;
      this.pattern = pattern;
    }

    public RecordWriter or(String defaultValue) {
      fieldList.add(LocalDateTimeField.get(maybe, pattern, defaultValue));
      return RecordWriter.this;
    }

  }


}