package gov.uspto.parser.dom4j.keyvalue.config;

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

public class FieldGroup {
	private String name;
	private List<Field> fields = new ArrayList<Field>();
	private boolean isMultivalued = false; // multiple occurrence, true if ancorField.

	public FieldGroup(String name) {
		this.name = name;
	}

	public FieldGroup(String name, List<Field> fields) {
		this.name = name;
		this.fields = fields;
	}

	public FieldGroup addField(String... fieldNames) {
		for (String fieldName : fieldNames) {
			addField(fieldName, false);
		}
		return this;
	}

	public FieldGroup addField(String fieldName) {
		return addField(fieldName, false);
	}

	public FieldGroup addField(String name, boolean isAnchor) {
		this.fields.add(new Field(name, isAnchor));
		return this;
	}

	/**
	 * Set Ancor Field
	 *
	 * The achor field denotes the start of an entity, by defining the first fields
	 * which occur in the field sequence.
	 * 
	 * @param name - one or more field names.
	 * @return
	 */
	public FieldGroup setAncorField(String... name) {
		for (String fieldName : name) {
			this.fields.add(new Field(fieldName, true));
		}
		this.isMultivalued = true;
		return this;
	}

	public boolean isMultivalued() {
		return isMultivalued;
	}

	public String getName() {
		return name;
	}

	public List<Field> getFields() {
		return fields;
	}

	public static List<Field> genAnchorFieldList(List<Field> fields) {
		List<Field> achorFields = new ArrayList<Field>();
		for (Field field : fields) {
			if (field.isAchor()) {
				achorFields.add(field);
			}
		}
		return achorFields;
	}

	@Override
	public String toString() {
		return "FieldGroup [name=" + name + ", fields=" + fields + ", isMultivalued=" + isMultivalued + "]";
	}
}