package org.openmuc.openiec61850.internal.cli;

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

public class StringListCliParameter extends ValueCliParameter {

    List<String> value;
    private List<String> defaultValue = null;

    StringListCliParameter(CliParameterBuilder builder, String parameterName, List<String> defaultValue) {
        super(builder, parameterName);
        this.defaultValue = defaultValue;
        value = defaultValue;
    }

    StringListCliParameter(CliParameterBuilder builder, String parameterName) {
        super(builder, parameterName);
    }

    public List<String> getValue() {
        return value;
    }

    @Override
    int parse(String[] args, int i) throws CliParseException {
        selected = true;

        value = new ArrayList<>();
        i++;
        while (i < args.length) {
            if (args[i].length() > 0 && args[i].startsWith("-")) {
                break;
            }
            value.add(args[i++]);
        }

        if (value.size() == 0) {
            throw new CliParseException("Parameter " + name + " has no value.");
        }

        return value.size() + 1;
    }

    @Override
    int appendSynopsis(StringBuilder sb) {
        int length = 0;
        if (optional) {
            sb.append("[");
            length++;
        }
        sb.append(name).append(" <").append(parameterName).append(">...");
        length += (name.length() + 6 + parameterName.length());
        if (optional) {
            sb.append("]");
            length++;
        }
        return length;
    }

    @Override
    public void appendDescription(StringBuilder sb) {
        sb.append("\t").append(name).append(" <").append(parameterName).append(">...\n\t    ").append(description);
        if (defaultValue != null) {
            sb.append(" Default is \"");
            for (String stringValue : defaultValue) {
                sb.append(stringValue);
            }
            sb.append("\".");
        }
    }
}