/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

// Generated code
import tutorial.*;
import shared.*;

import java.util.HashMap;

public class CalculatorHandler implements Calculator.Iface {

    private final static String largeString;

    static {
        // for 3M
        //final int size = 3 * 1024 * 1024;
        // for 3K
        //final int size = 3 * 1024;
        // for 300Bytes
        final int size = 3 * 102;

        char[] chars = new char[size];
        for (int i = 0; i < size; i++) {
            chars[i] = '1';
        }
        largeString = String.valueOf(chars, 0, size);
    }

    private HashMap<Integer, SharedStruct> log;
    private boolean printLog = false;

    public CalculatorHandler() {
        log = new HashMap<Integer, SharedStruct>();
    }

    public void ping() {
        if (printLog)
            System.out.println("ping()");
    }

    public int add(int n1, int n2) {
        if (printLog)
            System.out.println("add(" + n1 + "," + n2 + ")");
        return n1 + n2;
    }

    public int calculate(int logid, Work work) throws InvalidOperation {
        if (printLog)
            System.out.println("calculate(" + logid + ", {" + work.op + "," + work.num1 + "," + work.num2 + "})");
        int val = 0;
        switch (work.op) {
            case ADD:
                val = work.num1 + work.num2;
                break;
            case SUBTRACT:
                val = work.num1 - work.num2;
                break;
            case MULTIPLY:
                val = work.num1 * work.num2;
                break;
            case DIVIDE:
                if (work.num2 == 0) {
                    InvalidOperation io = new InvalidOperation();
                    io.what = work.op.getValue();
                    io.why = "Cannot divide by 0";
                    throw io;
                }
                val = work.num1 / work.num2;
                break;
            default:
                InvalidOperation io = new InvalidOperation();
                io.what = work.op.getValue();
                io.why = "Unknown operation";
                throw io;
        }

        SharedStruct entry = new SharedStruct();
        entry.key = logid;
        
        // for large string
        entry.value = largeString;
        log.put(logid, entry);

        return val;
    }

    public SharedStruct getStruct(int key) {
        if (printLog)
            System.out.println("getStruct(" + key + ")");
        return log.get(key);
    }

    public void zip() {
        if (printLog)
            System.out.println("zip()");
    }

}