pragma cashscript >= 0.7.1;

// Deprecated.
// Do not use. 

// Pay equal payments at regular intervals using input locks
contract Annuity(

  // interval for payouts, in blocks
  int period,

  // LockingBytecode of the beneficiary, the address receiving payments
  bytes recipientLockingBytecode,

  // amount paid in each installment
  int installment,

  // extra allowance for administration of contract
  // fees are paid from executors' allowance. 
  int executorAllowance
) {
  function execute() {

    // Check that the first output sends to the recipient
    require(tx.outputs[0].lockingBytecode == recipientLockingBytecode);

    // Check that time has passed and that time locks are enabled
    require(tx.age >= period);
        
    // require the second output to match the active bytecode
    require(tx.outputs[1].lockingBytecode == new LockingBytecodeP2SH(hash160(this.activeBytecode)));

    // Get the input value 
    int currentValue = tx.inputs[this.activeInputIndex].value;

    // Calculate value returned to the contract
    int returnedValue = currentValue - installment - executorAllowance;

    // Check that the outputs send the correct amounts
    require(tx.outputs[0].value >= installment);
    require(tx.outputs[1].value >= returnedValue);
        
  }
}