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/*
 * Copyright (c) 2013-2018, João Vitor Verona Biazibetti - All Rights Reserved
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see .
 *
 * https://www.github.com/BloodShura
 */

package com.github.bloodshura.x.venus.library.std;

import com.github.bloodshura.x.activity.logging.Logger;
import com.github.bloodshura.x.activity.scanning.XScanner;
import com.github.bloodshura.x.venus.exception.runtime.InvalidValueTypeException;
import com.github.bloodshura.x.venus.exception.runtime.ScriptRuntimeException;
import com.github.bloodshura.x.venus.executor.Context;
import com.github.bloodshura.x.venus.function.FunctionCallDescriptor;
import com.github.bloodshura.x.venus.function.Method;
import com.github.bloodshura.x.venus.function.annotation.MethodArgs;
import com.github.bloodshura.x.venus.function.annotation.MethodName;
import com.github.bloodshura.x.venus.type.PrimitiveType;
import com.github.bloodshura.x.venus.type.Type;
import com.github.bloodshura.x.venus.value.BoolValue;
import com.github.bloodshura.x.venus.value.DecimalValue;
import com.github.bloodshura.x.venus.value.IntegerValue;
import com.github.bloodshura.x.venus.value.StringValue;
import com.github.bloodshura.x.venus.value.TypeValue;
import com.github.bloodshura.x.venus.value.Value;
import com.github.bloodshura.x.worker.ParseWorker;

@MethodArgs(TypeValue.class)
@MethodName("scan")
public class Scan extends Method {
	@Override
	public Value call(Context context, FunctionCallDescriptor descriptor) throws ScriptRuntimeException {
		Logger logger = context.getApplicationContext().getUserData("in", Logger.class);

		if (logger != null) {
			TypeValue value = (TypeValue) descriptor.get(0);
			Type type = value.value();

			while (true) {
				try {
					String line = XScanner.scan();

					if (type == PrimitiveType.BOOLEAN) {
						return new BoolValue(ParseWorker.toBoolean(line));
					}

					if (type == PrimitiveType.DECIMAL) {
						return new DecimalValue(ParseWorker.toDouble(line));
					}

					if (type == PrimitiveType.INTEGER) {
						return new IntegerValue(ParseWorker.toLong(line));
					}

					if (type == PrimitiveType.STRING) {
						return new StringValue(line);
					}

					if (type == PrimitiveType.TYPE) {
						Type lookup = PrimitiveType.forIdentifier(line);

						if (lookup != null) {
							return new TypeValue(lookup);
						}

						continue;
					}

					throw new InvalidValueTypeException(context, "Cannot scan for an input of type " + type);
				}
				catch (NumberFormatException exception) {
				}
			}
		}

		throw new ScriptRuntimeException(context, "No input resource defined");
	}
}