var Calculator = require("./gen-nodejs/Calculator");
var ttypes = require("./gen-nodejs/tutorial_types");
const assert = require("assert");

var transport = thrift.TBufferedTransport;
var protocol = thrift.TBinaryProtocol;

var connection = thrift.createConnection("localhost", 9090, {
  transport: transport,
  protocol: protocol,
});

connection.on("error", function (err) {
  assert(false, err);
});

// Create a Calculator client with the connection
var client = thrift.createClient(Calculator, connection);

client.ping(function (err, response) {
  console.log("ping()");
});

client.add(1, 1, function (err, response) {
  console.log("1+1=" + response);
});

work = new ttypes.Work();
work.op = ttypes.Operation.DIVIDE;
work.num1 = 1;
work.num2 = 0;

client.calculate(1, work, function (err, message) {
  if (err) {
    console.log("InvalidOperation " + err);
  } else {
    console.log("Whoa? You know how to divide by zero?");
  }
});

work.op = ttypes.Operation.SUBTRACT;
work.num1 = 15;
work.num2 = 10;

client.calculate(1, work, function (err, message) {
  console.log("15-10=" + message);

  client.getStruct(1, function (err, message) {
    console.log("Check log: " + message.value);

    //close the connection once we're done
    connection.end();
  });
});

var Calculator = require("./gen-nodejs/Calculator");
var ttypes = require("./gen-nodejs/tutorial_types");
var SharedStruct = require("./gen-nodejs/shared_types").SharedStruct;

var data = {};

var server = thrift.createServer(Calculator, {
  ping: function (result) {
    console.log("ping()");
    result(null);
  },

  add: function (n1, n2, result) {
    console.log("add(", n1, ",", n2, ")");
    result(null, n1 + n2);
  },

  calculate: function (logid, work, result) {
    console.log("calculate(", logid, ",", work, ")");

    var val = 0;
    if (work.op == ttypes.Operation.ADD) {
      val = work.num1 + work.num2;
    } else if (work.op === ttypes.Operation.SUBTRACT) {
      val = work.num1 - work.num2;
    } else if (work.op === ttypes.Operation.MULTIPLY) {
      val = work.num1 * work.num2;
    } else if (work.op === ttypes.Operation.DIVIDE) {
      if (work.num2 === 0) {
        var x = new ttypes.InvalidOperation();
        x.whatOp = work.op;
        x.why = "Cannot divide by 0";
        result(x);
        return;
      }
      val = work.num1 / work.num2;
    } else {
      var x = new ttypes.InvalidOperation();
      x.whatOp = work.op;
      x.why = "Invalid operation";
      result(x);
      return;
    }

    var entry = new SharedStruct();
    entry.key = logid;
    entry.value = "" + val;
    data[logid] = entry;

    result(null, val);
  },

  getStruct: function (key, result) {
    console.log("getStruct(", key, ")");
    result(null, data[key]);
  },

  zip: function () {
    console.log("zip()");
  },
});

server.listen(9090);