<?php
class Tender extends AppModel {

	var $belongsTo = array(
		'TenderType',
		'Customer',
		'LedgerEntry',
		'DepositTransaction' => array(
			'className' => 'Transaction',
		),
		'NsfTransaction' => array(
			'className' => 'Transaction',
			'dependent' => true,
		),
	);


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * function: afterSave
   *  - Performs any work needed after the save occurs
   */

  function afterSave($created) {
    // Come up with a (not necessarily unique) name for the tender.
    // For checks & money orders, this will be based on the check
    // number.  For other types of tender, we'll just use the
    // generic name of the tender type, and the tender ID

    // Determine our tender type, and set the ID of that model
    $this->TenderType->id = $this->field('tender_type_id');

    // REVISIT <AP>: 20090810
    //  The only tender expected to have no tender type
    //  is our special "Closing" tender.
    if (empty($this->TenderType->id))
      $newname = 'Closing';
    else {
      $newname      = $this->TenderType->field('name');
      $naming_field = $this->TenderType->field('naming_field');
      if (!empty($naming_field))
	$newname .= ' #' . $this->field($naming_field);
    }

    if ($newname !== $this->field('name'))
      $this->saveField('name', $newname);

    return parent::afterSave($created);
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * function: beforeDelete
   *  - Performs any work needed before the delete occurs
   */

  function beforeDelete($cascade = true) {
    // REVISIT <AP>: 20090814
    //  Experimental, and incomplete mechanism to protect
    //  against trying to delete data that shouldn't be deleted.

    $deposit_id = $this->field('deposit_transaction_id');
    pr(compact('deposit_id'));
    // If this tender has already been deposited, it would
    // be a rats nest to figure out how to delete this tender.
    if (!empty($deposit_id))
      return false;

    return parent::beforeDelete($cascade);
  }

  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * function: verifyTender
   *  - Verifies consistenty of new tender data
   *    (not in a pre-existing tender)
   */
  function verifyTender($tender) {
    $this->prFunctionLevel(10);
    $this->prEnter(compact('tender'));

    if (empty($tender['tender_type_id'])) {
      return $this->prReturn(false);
    }

    return $this->prReturn(true);
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * function: addTender
   *  - Inserts new Tender into the database
   */

  function addTender($tender) {
    $this->prEnter(compact('tender'));

    $ret = array('data' => $tender);
    if (!$this->verifyTender($tender))
      return $this->prReturn(array('error' => true) + $ret);

    $this->create();
    if (!$this->save($tender))
      return $this->prReturn(array('error' => true) + $ret);

    $ret['tender_id'] = $this->id;
    return $this->prReturn($ret + array('error' => false));
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * function: nsf
   *  - Flags the ledger entry as having insufficient funds
   */

  function nsf($id, $stamp = null, $comment = null) {
    $this->prEnter(compact('id', 'stamp', 'comment'));

    // Get information about this NSF item.
    $this->id = $id;
    $tender = $this->find
      ('first', array
       ('contain' =>
	array('LedgerEntry',
	      'DepositTransaction',
	      'NsfTransaction'),
	));
    $this->pr(20, compact('tender'));

    if (!empty($tender['NsfTransaction']['id']))
      die("Item has already been set as NSF");

    if (empty($tender['DepositTransaction']['id']))
      die("Item has not been deposited yet");

    $tender['Transaction'] = $tender['DepositTransaction'];
    unset($tender['DepositTransaction']);
    unset($tender['NsfTransaction']);

    $T = new Transaction();
    $result = $T->addNsf($tender, $stamp, $comment);
    if (empty($result['error'])) {
      // Flag the tender as NSF, using the items created from addNsf
      $this->id = $id;
      $this->saveField('nsf_transaction_id', $result['nsf_transaction_id']);
      $this->saveField('nsf_ledger_entry_id', $result['nsf_ledger_entry_id']);
    }

    return $this->prReturn($result);
  }


}
?>