void process_withdrawal()
{
incoming.wait()
.handle<withdraw_ok>(
[&](withdraw_ok const & msg) {
interface_hardware.send(
issue_money(withdrawal_amount));
bank.send(
withdrawal_processed(account, withdrawal_amount));
state = &atm::done_processing;
}
)
.handle<withdraw_denied>(
[&](withdraw_denied const & msg) {
interface_hardware.send(display_insufficient_funds());
state = &atm::done_processing;
}
)
.handle<cancel_pressed>(
[&](cancel_pressed const & msg) {
bank.send(
cancel_withdrawal(account, withdrawal_amount));
interface_hardware.send(
display_withdrawal_cancelled());
state = &atm::done_processing;
}
);
}
void getting_pin()
{
incoming.wait()
.handle<digit_pressed>(
[&](digit_pressed const & msg) {
unsigned const pin_length = 4;
pin += msg.digit;
if (pin.length() == pin_length) {
bank.send(verify_pin(account, pin, incoming));
state = &atm::verifying_pin;
}
}
)
.handle<clear_last_pressed>(
[&](clear_last_pressed const & msg) {
if (!pin.empty()) {
pin.pop_back();
}
}
)
.handle<cancel_pressed>(
[&](cancel_pressed const & msg) {
state = &atm::done_processing;
}
);
}
void run()
{
try
{
for(;;)
{
incoming.wait()
.handle<verify_pin>(
[&](verify_pin const& msg)
{
if(msg.pin=="1937")
{
msg.atm_queue.send(pin_verified());
}
else
{
msg.atm_queue.send(pin_incorrect());
}
}
)
.handle<withdraw>(
[&](withdraw const& msg)
{
if(balance>=msg.amount)
{
msg.atm_queue.send(withdraw_ok());
balance-=msg.amount;
}
else
{
msg.atm_queue.send(withdraw_denied());
}
}
)
.handle<get_balance>(
[&](get_balance const& msg)
{
msg.atm_queue.send(::balance(balance));
}
)
.handle<withdrawal_processed>(
[&](withdrawal_processed const& msg)
{
}
)
.handle<cancel_withdrawal>(
[&](cancel_withdrawal const& msg)
{
}
);
}
}
catch(messaging::close_queue const&)
{
}
}
void waiting_for_card()
{
interface_hardware.send(display_enter_card());
incoming.wait()
.handle<card_inserted>(
[&](card_inserted const & msg) {
account = msg.account;
pin = "";
interface_hardware.send(display_enter_pin());
state = &atm::getting_pin;
}
);
}
void process_balance()
{
incoming.wait()
.handle<balance>(
[&](balance const & msg) {
interface_hardware.send(display_balance(msg.amount));
state = &atm::wait_for_action;
}
)
.handle<cancel_pressed>(
[&](cancel_pressed const & msg) {
state = &atm::done_processing;
}
);
}
void verifying_pin()
{
incoming.wait()
.handle<pin_verified>(
[&](pin_verified const & msg) {
state = &atm::wait_for_action;
}
)
.handle<pin_incorrect>(
[&](pin_incorrect const & msg) {
interface_hardware.send(
display_pin_incorrect_message());
state = &atm::done_processing;
}
)
.handle<cancel_pressed>(
[&](cancel_pressed const & msg) {
state = &atm::done_processing;
}
);
}
void wait_for_action()
{
interface_hardware.send(display_withdrawal_options());
incoming.wait()
.handle<withdraw_pressed>(
[&](withdraw_pressed const & msg) {
withdrawal_amount = msg.amount;
bank.send(withdraw(account, msg.amount, incoming));
state = &atm::process_withdrawal;
}
)
.handle<balance_pressed>(
[&](balance_pressed const & msg) {
bank.send(get_balance(account, incoming));
state = &atm::process_balance;
}
)
.handle<cancel_pressed>(
[&](cancel_pressed const & msg) {
state = &atm::done_processing;
}
);
}
void run()
{
try {
for (;;) {
incoming.wait()
.handle<issue_money>(
[&](issue_money const & msg) {
{
std::lock_guard<std::mutex> lk(iom);
std::cout << "Issuing "
<< msg.amount << std::endl;
}
}
)
.handle<display_insufficient_funds>(
[&](display_insufficient_funds const & msg) {
{
std::lock_guard<std::mutex> lk(iom);
std::cout << "Insufficient funds" << std::endl;
}
}
)
.handle<display_enter_pin>(
[&](display_enter_pin const & msg) {
{
std::lock_guard<std::mutex> lk(iom);
std::cout
<< "Please enter your PIN (0-9)"
<< std::endl;
}
}
)
.handle<display_enter_card>(
[&](display_enter_card const & msg) {
{
std::lock_guard<std::mutex> lk(iom);
std::cout << "Please enter your card (I)"
<< std::endl;
}
}
)
.handle<display_balance>(
[&](display_balance const & msg) {
{
std::lock_guard<std::mutex> lk(iom);
std::cout
<< "The balance of your account is "
<< msg.amount << std::endl;
}
}
)
.handle<display_withdrawal_options>(
[&](display_withdrawal_options const & msg) {
{
std::lock_guard<std::mutex> lk(iom);
std::cout << "Withdraw 50? (w)" << std::endl;
std::cout << "Display Balance? (b)"
<< std::endl;
std::cout << "Cancel? (c)" << std::endl;
}
}
)
.handle<display_withdrawal_cancelled>(
[&](display_withdrawal_cancelled const & msg) {
{
std::lock_guard<std::mutex> lk(iom);
std::cout << "Withdrawal cancelled"
<< std::endl;
}
}
)
.handle<display_pin_incorrect_message>(
[&](display_pin_incorrect_message const & msg) {
{
std::lock_guard<std::mutex> lk(iom);
std::cout << "PIN incorrect" << std::endl;
}
}
)
.handle<eject_card>(
[&](eject_card const & msg) {
{
std::lock_guard<std::mutex> lk(iom);
std::cout << "Ejecting card" << std::endl;
}
}
);
}
} catch (messaging::close_queue&) {
}
}
