<?php
class MonetarySource extends AppModel {

	var $name = 'MonetarySource';
	var $validate = array(
		'id' => array('numeric'),
		'name' => array('notempty'),
		'tillable' => array('boolean')
	);

	var $belongsTo = array(
	);

	var $hasMany = array(
		'LedgerEntry',
	);


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * function: nsf
   *  - Flags the ledger entry as having insufficient funds
   *  - NOTE: nsf only works if given the monetary source id
   *          to transaction e3, below
   *  - NOTE: In order to show that the rent formerly considered 
   *          "collected" is now recognized in reverse, we must
   *          credit A/R with a negative amount in order to
   *          reconcile it against the Rent<->A/R ledger entry.
   *
   *   FEE     RENT      A/R    RECEIPT   CHECK     NSF     BANK
   * -------  -------  -------  -------  -------  -------  -------
   *    |        |30    30|        |        |        |        |     t1 e1a  : R e2/e7a  : 
   *    |        |20    20|        |        |        |        |     t1 e1b  : R e2/e7b  : 
   *    |        |        |        |        |        |        |     
   *    |        |        |30    30|        |        |        |     t2 e2a  : R e3      : R e1a
   *    |        |        |20    20|        |        |        |     t2 e2b  : R e3      : R e1b
   *    |        |        |        |50    50|        |        |     t2 e3   : R e4      : R e2
   *    |        |        |        |        |        |        |     
   *    |        |        |        |        |50      |      50|     t3 e4   :           : R e3
   *    |        |        |        |        |        |        |     
   *    |        |        |        |        |        |-50  -50|     t4 e5   :           : R e6
   *    |        |        |        |-50     |     -50|        |     t5 e6   : R e5      : R e7a/e7b
   *    |        |        |-30  -30|        |        |        |     t6 e7a  : R e6      : R e1a
   *    |        |        |-20  -20|        |        |        |     t6 e7b  : R e6      : R e1b
   *    |35      |      35|        |        |        |        |     t6 e8
   *
   */

  function nsf($id, $stamp = null) {
    pr(array('MonetarySource::nsf',
	     compact('id')));

    $A = new Account();

    // Get the LedgerEntries that use this monetary source
    $source = $this->find
      ('first',
       array('contain' =>
	     array(/* e3 */
		   'LedgerEntry' =>
		   array('Transaction.id',
			 'MonetarySource.id',
			 'Customer.id',
			 'Lease.id',

			 /* e3 debit */
			 'DebitLedger' => /* e.g. CHECK Ledger */
			 array('fields' => array(),
			       
			       'Account' => /* e.g. CHECK Account */
			       array('fields' => array('id', 'name'),
				     'conditions' =>
				     array('Account.payable' => 1,
					   'Account.type' => 'ASSET'),
				     ),
			       ),

			 /* e3 credit */
			 'CreditLedger' => /* i.e. RECEIPT Ledger */
			 array('fields' => array('id'),
			       'Account' => /* i.e. RECEIPT Account */
			       array('fields' => array('id', 'name'),
				     'conditions' =>
				     array('Account.id' => $A->receiptAccountID()),
				     ),
			       ),

			 /* e2 */
			 'DebitReconciliationLedgerEntry' =>
			 array(/* e2 credit */
			       'CreditLedger' => /* i.e. A/R Ledger */
			       array('fields' => array(),

				     'Account' => /* i.e. A/R Account */
				     array('fields' => array(),
					   'conditions' =>
					   array('Account.id' => $A->accountReceivableAccountID()),
					   ),
				     ),

			       /* e1 */
			       // STUPID CakePHP bug screws up CLASS contains CLASS.
			       // Use the same class, but with different name.
			       'DebitReconciliationLedgerEntry2',
			       ),

			 /* e4 */
			 'CreditReconciliationLedgerEntry' =>
			 array(/* e4 debit */
			       'DebitLedger' => /* e.g. BANK Ledger */
			       array('fields' => array('id'),
				     'Account' => /* e.g. BANK Account */
				     array('fields' => array('id', 'name'),
					   'conditions' =>
					   array('Account.depositable' => 1),
					   ),
				     ),
			       ),
			 ),
		   ),

	     'conditions' => array(array('MonetarySource.id' => $id)),
	     ));
    pr($source);

    $nsf_account_id = $A->nsfAccountID();
    $nsf_fee_account_id = $A->nsfChargeAccountID();
    $ar_account_id = $A->accountReceivableAccountID();
    $receipt_account_id = $A->receiptAccountID();

    $t4_id = null;
    $t5_id = null;
    foreach ($source['LedgerEntry'] AS $e3) {
      // We expect only a single e4 entry
      $e4 = $e3['CreditReconciliationLedgerEntry'];
      if (count($e4) < 1)
	continue;
      if (count($e4) > 1)
	die('Too many e4 entries');

      // Pullup e4 from the single member array
      $e4 = $e4[0];

      // e3 amount
      $amount = -$e3['amount'];

      // e4 account
      $bank_account_id = $e4['DebitLedger']['account_id'];

      // post new e5
      $e5_ids = $A->postLedgerEntry
	(array('transaction_id' => $t4_id),
	 null,
	 array('debit_ledger_id' => $A->currentLedgerID($bank_account_id),
	       'credit_ledger_id' => $A->currentLedgerID($nsf_account_id),
	       'effective_date' => $stamp,
	       'amount' => $amount,
	       'lease_id' => $e3['lease_id'],
	       'customer_id' => $e3['customer_id'],
	       'comment' => "NSF Bank Reversal; Monetary Source #{$id}",
	       )
	 );

      if ($e5_ids['error'])
	return null;
      $t4_id = $e5_ids['transaction_id'];
      
      pr(array('checkpoint' => 'Posted Ledger Entry e5',
	       compact('e5_ids', 'amount')));

      // post new e6... this will be our crossover point
      // from typical positive entries to negative entries.
      // Therefore, no reconciliation on this account.
      $e6_ids = $A->postLedgerEntry
	(array('transaction_id' => $t5_id),
	 array('monetary_source_id' => $e3['monetary_source_id']),
	 array('debit_ledger_id' => $A->currentLedgerID($nsf_account_id),
	       'credit_ledger_id' => $A->currentLedgerID($receipt_account_id),
	       'effective_date' => $stamp,
	       'amount' => $amount,
	       'lease_id' => $e3['lease_id'],
	       'customer_id' => $e3['customer_id'],
	       'comment' => "NSF tracker; Monetary Source #{$id}",
	       ),
	 array('debit'  => array
	       (array('LedgerEntry' =>
		      array('id' => $e5_ids['id'],
			    'amount' => $amount))),
	       )
	 );

      if ($e6_ids['error'])
	return null;
      $t5_id = $e6_ids['transaction_id'];
      
      pr(array('checkpoint' => 'Posted Ledger Entry e6',
	       compact('e6_ids', 'amount')));

      $t6_id = null;
      foreach ($e3['DebitReconciliationLedgerEntry'] AS $e2) {
	foreach ($e2['DebitReconciliationLedgerEntry2'] AS $e1) {
	  $amount = -1*$e1['Reconciliation']['amount'];

	  // post new e7
	  $e7_ids = $A->postLedgerEntry
	    (array('transaction_id' => $t6_id),
	     null,
	     array('debit_ledger_id' => $A->currentLedgerID($receipt_account_id),
		   'credit_ledger_id' => $A->currentLedgerID($ar_account_id),
		   'effective_date' => $stamp,
		   'amount' => $amount,
		   'lease_id' => $e1['lease_id'],
		   'customer_id' => $e1['customer_id'],
		   'comment' => "NSF Receipt; Monetary Source #{$id}",
		   ),
	     array('debit'  => array
		   (array('LedgerEntry' =>
			  array('id' => $e6_ids['id'],
				'amount' => $amount))),

		   'credit' => array
		   (array('LedgerEntry' =>
			  array('id' => $e1['id'],
				'amount' => $amount))),
		   )
	     );

	  if ($e7_ids['error'])
	    return null;
	  $t6_id = $e7_ids['transaction_id'];

	  pr(array('checkpoint' => 'Posted Ledger Entry e7',
		   compact('e7_ids', 'amount')));
	}
      }
    }

    // Cheat for now
    $customer_id = $source['LedgerEntry'][0]['customer_id'];
    $lease_id = null;

    // post new e8
    $e8_ids = $A->postLedgerEntry
      (array('transaction_id' => $t6_id),
       null,
       array('debit_ledger_id' => $A->currentLedgerID($ar_account_id),
	     'credit_ledger_id' => $A->currentLedgerID($nsf_fee_account_id),
	     'effective_date' => $stamp,
	     'amount' => 35,
	     'lease_id' => $lease_id,
	     'customer_id' => $customer_id,
	     'comment' => "NSF Fee; Monetary Source #{$id}",
	     )
       );

    if ($e8_ids['error'])
      return null;

    pr(array('checkpoint' => 'Posted Ledger Entry e8',
	     compact('e8_ids')));

    return true;
  }


}
?>