/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.shell.cli;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import net.sourceforge.argparse4j.inf.Argument;
import net.sourceforge.argparse4j.inf.ArgumentAction;
import net.sourceforge.argparse4j.inf.ArgumentParser;
import net.sourceforge.argparse4j.inf.ArgumentParserException;
import org.neo4j.shell.parameter.ParameterService;
import org.neo4j.shell.parameter.ParameterService.ParameterParser;

/**
 * Action that parses and appends query parameters.
 */
public class AddParamArgumentAction implements ArgumentAction {
    private final ParameterParser queryParameterParser;

    AddParamArgumentAction(ParameterParser queryParameterParser) {
        this.queryParameterParser = queryParameterParser;
    }

    @Override
    @SuppressWarnings("unchecked")
    public void run(ArgumentParser parser, Argument arg, Map<String, Object> attrs, String flag, Object value)
            throws ArgumentParserException {
        if (attrs.get(arg.getDest()) instanceof List queryParams) {
            queryParams.add(parse(value.toString()));
        } else {
            var queryParams = new ArrayList<ParameterService.RawParameters>();
            queryParams.add(parse(value.toString()));
            attrs.put(arg.getDest(), queryParams);
        }
    }

    private ParameterService.RawParameters parse(String input) {
        try {
            return queryParameterParser.parse(input);
        } catch (ParameterService.ParameterParsingException e) {
            throw new IllegalArgumentException("Incorrect usage.\nusage: --param  'name => value'");
        }
    }

    @Override
    public void onAttach(Argument arg) {}

    @Override
    public boolean consumeArgument() {
        return true;
    }
}
