package opennlp.tools.disambiguator.lesk;

public class LeskParameters {

	// VARIATIONS
	public static enum LESK_TYPE {
		LESK_BASIC,
		LESK_BASIC_CTXT,
		LESK_BASIC_CTXT_WIN,
		LESK_BASIC_CTXT_WIN_BF,
		LESK_EXT,
		LESK_EXT_CTXT,
		LESK_EXT_CTXT_WIN,
		LESK_EXT_CTXT_WIN_BF,
		LESK_EXT_EXP,
		LESK_EXT_EXP_CTXT,
		LESK_EXT_EXP_CTXT_WIN,
		LESK_EXT_EXP_CTXT_WIN_BF,
	}

	// DEFAULTS
	protected static final LESK_TYPE DFLT_LESK_TYPE = LESK_TYPE.LESK_EXT_EXP_CTXT_WIN;
	protected static final int DFLT_WIN_SIZE = 4;
	protected static final int DFLT_DEPTH = 3;
	protected static final double DFLT_IEXP = 0.3;
	protected static final double DFLT_DEXP = 0.3;
	
		
	public LESK_TYPE leskType;
	public int win_f_size;
	public int win_b_size;
	public int depth;

	public boolean fathom_synonyms;
	public boolean fathom_hypernyms;
	public boolean fathom_hyponyms;
	public boolean fathom_meronyms;
	public boolean fathom_holonyms;

	public double depth_weight;
	public double iexp;
	public double dexp;
	
	
	public LeskParameters(){
		this.setDefaults();
	}

	public void setDefaults(){
		this.leskType = LeskParameters.DFLT_LESK_TYPE;
		this.win_f_size = LeskParameters.DFLT_WIN_SIZE;
		this.win_b_size = LeskParameters.DFLT_WIN_SIZE;
		this.depth = LeskParameters.DFLT_DEPTH;
		this.iexp = LeskParameters.DFLT_IEXP;
		this.dexp = LeskParameters.DFLT_DEXP;
		this.fathom_holonyms = true;
		this.fathom_hypernyms = true;
		this.fathom_hyponyms = true;
		this.fathom_meronyms = true;
		this.fathom_synonyms = true;
	}

	// Parameter Validation
	// TODO make isSet for semantic feature booleans
	public boolean isValid(){

		switch(this.leskType){
		case LESK_BASIC: 
		case LESK_BASIC_CTXT : 
			return true;
		case LESK_BASIC_CTXT_WIN : 
			return (this.win_b_size==this.win_f_size) 
					&& this.win_b_size>=0 ;
		case LESK_BASIC_CTXT_WIN_BF : 
			return (this.win_b_size>=0) 
					&& (this.win_f_size>=0) ;
		case LESK_EXT : 
		case LESK_EXT_CTXT : 
			return (this.depth>=0) 
					&& (this.depth_weight >= 0);

		case LESK_EXT_CTXT_WIN : 
		case LESK_EXT_CTXT_WIN_BF :
			return (this.depth>=0) 
					&& (this.depth_weight >= 0)
					&& (this.win_b_size>=0) 
					&& (this.win_f_size>=0);

		case LESK_EXT_EXP : 
		case LESK_EXT_EXP_CTXT : 
			return (this.depth>=0) 
					&& (this.dexp >= 0)
					&& (this.iexp>=0) ;

		case LESK_EXT_EXP_CTXT_WIN : 
		case LESK_EXT_EXP_CTXT_WIN_BF : 
			return (this.depth>=0) 
					&& (this.dexp >= 0)
					&& (this.iexp>=0) 
					&& (this.win_b_size>=0) 
					&& (this.win_f_size>=0);
		default :
			return false;
		}
	}

}