package de.intevation.flys.artifacts.states;

import org.apache.log4j.Logger;

import de.intevation.artifacts.Artifact;
import de.intevation.artifacts.CallContext;

import de.intevation.artifacts.common.model.KVP;


public class SoundingsSelect extends MultiStringArrayState {

    public static final String SOUNDINGS  = "soundings";


    private static final Logger logger = Logger.getLogger(SoundingsSelect.class);


    @Override
    public String getUIProvider() {
        return "parameter-matrix";
    }


    @Override
    protected KVP<String, String>[] getOptions(
        Artifact artifact,
        String   parameterName
    )
    throws IllegalArgumentException
    {
        logger.debug("Get options for parameter: '" + parameterName + "'");

        if (!testParameterName(parameterName)) {
            throw new IllegalArgumentException(
                "Invalid parameter for state: '" + parameterName + "'");
        }

        KVP[] kvp = new KVP[10];

        for (int i = 0; i < 10; i++) {
            String id    = String.valueOf(i);
            String value = "#" + id;

            kvp[i] = new KVP(id, value);
        }

        return kvp;
    }


    @Override
    protected String getLabelFor(
        CallContext cc,
        String      parameterName,
        String      value
    ) throws IllegalArgumentException
    {
        if (!testParameterName(parameterName)) {
            throw new IllegalArgumentException(
                "Invalid parameter for state: '" + parameterName + "'");
        }

        return "#" + value;
    }


    /**
     * This method might be used to test, if a parameter name is handled by this
     * state.
     *
     * @param parameterName The name of a parameter.
     *
     * @return true, if parameterName is one of <i>MAIN_CHANNEL</i> or
     * <i>TOTAL_CHANNEL</i>. Otherwise false.
     */
    protected boolean testParameterName(String parameterName) {
        if (parameterName == null || parameterName.length() == 0) {
            return false;
        }
        else if (parameterName.equals(SOUNDINGS)) {
            return true;
        }
        else {
            return false;
        }
    }
}
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