def invalid_account_exist(trace, acc_number)
  print("Invalid trace: ", trace)
  print("Account ", acc_number, " exists!\n")
  exit
end

def invalid_account_not_exist(trace, acc_number)
  print("Invalid trace: ", trace)
  print("Account ", acc_number, " doesn't exist!\n")
  exit
end

def valid_OP(trace, accounts, acc_number, amount, balance)
  if(amount != 0) then 
    print("Invalid trace: ", trace)
    print("Account open amount is not 0.00!\n")
    exit
  elsif(balance != 0) then 
    print("Invalid trace: ", trace)
    print("Account balance is not 0.00!\n")
    exit
  end
end

def valid_XO(trace, accounts, acc_number, amount, balance)
  if(amount != 0)
    print("Invalid trace: ", trace)
    print("Account open amount is not 0.00!\n")
    exit
  elsif(accounts[acc_number] != balance)
    print("Invalid trace: ", trace)
    print("Account balance is not correct!\n")
    exit
  end
end

def valid_nonexist_XO(trace, accounts, acc_number, amount, balance)
  if(amount != 0)
    print("Invalid trace: ", trace)
    print("Account open amount is not 0.00!\n")
    exit
  elsif(balance != 0)
    print("Invalid trace: ", trace)
    print("Account balance is not 0.00!\n")
    exit
  end
end

def valid_CL(trace, accounts, acc_number, amount, balance)
  if(balance != 0)
    print("Invalid trace: ", trace)
    print("Transction amount is not 0.00!\n")
    exit
  elsif(accounts[acc_number] != amount)
    print("Invalid trace: ", trace)
    print("Account balance is not correct!\n")
    exit
  end
end

def valid_XC(trace, accounts, acc_number, amount, balance)
  if(amount != 0)
    print("Invalid trace: ", trace)
    print("Transction amount is not 0.00!\n")
    exit
  elsif(balance != 0)
    print("Invalid trace: ", trace)
    print("Account balance is not 0.00!\n")
    exit
  end
end

def valid_DE(trace, accounts, acc_number, amount, balance)
  if((accounts[acc_number]+amount) != balance)
    print("Invalid trace: ", trace)
    print("Current balance ", (accounts[acc_number].to_f)/100, " + ", "deposit amount ", (amount.to_f)/100, " != new balance ", (balance.to_f)/100, "\n");
    exit
  elsif(amount > 999999)
    print("Invalid trace: ", trace)
    print("Deposit amount ", amount, " > 9999.99\n")
    exit
  else
    accounts[acc_number]+amount 
  end
end

def valid_XD(trace, accounts, acc_number, amount, balance)
  if(acc_number != '00000000')
    print("Invalid trace: ", trace)
    print("Account Number is not 00000000!\n")
    exit
  elsif(amount != 0)
    print("Invalid trace: ", trace)
    print("Transction amount is not 0.00!\n")
    exit
  elsif(balance != 0)
    print("Invalid trace: ", trace)
    print("Account balance is not 0.00!\n")
    exit
  end
end

def valid_WI(trace, accounts, acc_number, amount, balance)
  if(accounts[acc_number] < amount)
    print("Invalid trace: ", trace)
    print("Account balance is not enough for withdraw!\n");
    exit
  elsif((accounts[acc_number]-amount) != balance)
    print("Current balance ", (accounts[acc_number].to_f)/100, " - ", "withdraw amount ", (amount.to_f)/100, " != new balance ", (balance.to_f)/100, "\n");
    print("Invalid trace: ", trace)
    exit
  else
    accounts[acc_number]-amount
  end
end

def valid_WX(trace, accounts, acc_number, amount, balance)
  if(amount != 0)
    print("Invalid trace: ", trace)
    print("Transction amount is not 0.00!\n")
    exit
  elsif(accounts[acc_number] != balance)
    print("Invalid trace: ", trace)
    print("Account balance is not correct!\n")
    exit
  end
end

def valid_XW(trace, accounts, acc_number, amount, balance)
  if(acc_number != '00000000')
    print("Invalid trace: ", trace)
    print("Account Number is not 00000000!\n")
    exit
  elsif(amount != 0)
    print("Invalid trace: ", trace)
    print("Transction amount is not 0.00!\n")
    exit
  elsif(balance != 0)
    print("Invalid trace: ", trace)
    print("Account balance is not 0.00!\n")
    exit
  end
end

trace = File.open(ARGV[0])
accounts = Hash.new()
trace.each do |line|
  break if(line == "\n") 
  @ATM_file, @Trans, @Acc_number, @Amount, @Balance = line.chomp.split(/,/)
  atm_file = @ATM_file.strip
  trans = @Trans.strip
  acc_number = @Acc_number.strip
  @Amount = @Amount.strip.split(/\./)
  @Balance = @Balance.strip.split(/\./)
  amount = (@Amount[0].to_i * 100) + @Amount[1].to_i
  balance = (@Balance[0].to_i * 100) + @Balance[1].to_i

  if (accounts.has_key?(acc_number))
    case trans
    when 'OP'
      invalid_account_exist(line, acc_number) 
    when 'XO'
      valid_XO(line, accounts,acc_number,amount,balance)
    when 'CL'
      valid_CL(line, accounts,acc_number,amount,balance)
      accounts.delete(acc_number)
    when 'XC'
      invalid_account_exist(line, acc_number) 
    when 'WI'
      accounts[acc_number] = valid_WI(line, accounts,acc_number,amount,balance)
    when 'WX'
      valid_WX(line, accounts,acc_number,amount,balance) 
    when 'XW'
      invalid_account_exist(line, acc_number) 
    when 'DE'
      accounts[acc_number] = valid_DE(line, accounts,acc_number,amount,balance) 
    when 'XD'
      invalid_account_exist(line, acc_number) 
    else
      print("Invalid transaction ", trans, "\n");
      exit
    end 
  else 
    case trans
    when 'OP'
      valid_OP(line, accounts,acc_number,amount,balance)
      accounts[acc_number] = amount
    when 'XO'
      valid_nonexist_XO(line, accounts,acc_number,amount,balance)
    when 'CL'
      invalid_account_not_exist(line, acc_number)
    when 'XC'
      valid_XC(line, accounts,acc_number,amount,balance) 
    when 'WI'
      invalid_account_not_exist(line, acc_number)
    when 'WX'
      invalid_account_not_exist(line, acc_number)
    when 'XW'
      valid_XW(line, accounts,acc_number,amount,balance) 
    when 'DE'
      invalid_account_not_exist(line, acc_number)
    when 'XD'
      valid_XD(line, accounts,acc_number,amount,balance) 
    else
      print("Invalid transaction ", trans, "\n");
      exit
    end 
  end 
end

print("Valid Trace!\n")
trace.close