<?php

class EntriesController extends AppController {

  var $sidemenu_links = array();


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * override: sideMenuLinks
   *  - Generates controller specific links for the side menu
   */
  function sideMenuLinks() {
    return array_merge(parent::sideMenuLinks(), $this->sidemenu_links);
  }

  
  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * virtuals: jqGridData
   *  - With the application controller handling the jqGridData action,
   *    these virtual functions ensure that the correct data is passed
   *    to jqGrid.
   */

  function jqGridDataSetup(&$params) {
    parent::jqGridDataSetup($params);
    if (isset($params['custom']['collected_account_id']))
      $params['custom']['account_id'] = $params['custom']['collected_account_id'];
  }

  function jqGridDataTables(&$params, &$model) {
    $link =
      array(// Models
	     'Account' => 
	     array('fields' => array('id', 'name', 'type'),
		   ),

	     'Ledger' =>
	     array('fields' => array('id', 'sequence'),
		   ),

	     'DoubleEntry' => array
	     ('Transaction' =>
	      array('fields' => array('id', 'stamp'),
		    ),

	      'DebitLedger' =>
	      array('fields' => array('id'),
		    'Account' => array('alias' => 'DebitAccount',
				       'fields' => array('id', 'name'),
				       ),
		    ),

	      'CreditLedger' =>
	      array('fields' => array('id'),
		    'Account' => array('alias' => 'CreditAccount',
				       'fields' => array('id', 'name'),
				       ),
		    ),
				     
	      'Customer' =>
	      array('fields' => array('id', 'name'),
		    ),

	      'Lease' =>
	      array('fields' => array('id', 'number'),
		    'Unit' => 
		    array('fields' => array('id', 'name'),
			  ),
		    ),
	      ),
	    );

    if (count(array_intersect($params['fields'], array('applied'))) == 1) {
      $link['Payment']  = array('DoubleEntry' =>
			       array('alias' => 'PaymentDoubleEntry',
				     'Receipt'),
			       'Account' => array('alias' => 'PaymentAccount'),
			       );
      $link['Charge']  = array('DoubleEntry' =>
			       array('alias' => 'ChargeDoubleEntry',
				     'Invoice'),
			       'Account' => array('alias' => 'ChargeAccount'),
			       );
    }
    elseif (isset($params['custom']['customer_id']) || isset($params['custom']['lease_id'])) {
      $link['Charge']  = array('DoubleEntry' =>
			       array('alias' => 'ChargeDoubleEntry',
				     'Invoice'),
			       'Account' => array('alias' => 'ChargeAccount'),
			       );
    }

    return array('link' => $link);
  }

  function jqGridDataFields(&$params, &$model) {
    $fields = parent::jqGridDataFields($params, $model);

    if (!isset($fields))
      $fields = array('Entry.*');

/*     if (isset($params['custom']['reconcile_id'])) { */
/*       $fields[] = array("IF(Entry.type = 'CHARGE',", */
/* 			"   COALESCE(AppliedCharge.amount,0),", */
/* 			"   COALESCE(AppliedPayment.amount,0))", */
/* 			" AS 'applied'"); */
/*       $fields[] = array("Entry.amount - (", */
/* 			"IF(Entry.type = 'CHARGE',", */
/* 			"   COALESCE(AppliedCharge.amount,0),", */
/* 			"   COALESCE(AppliedPayment.amount,0))", */
/* 			") AS 'balance'"); */
/*     } */

    if (isset($params['custom']['customer_id']) || isset($params['custom']['lease_id'])) {
      $fields[] = "IF(Entry.type = 'CHARGE',  DoubleEntry.amount, NULL) AS debit";
      $fields[] = "IF(Entry.type = 'PAYMENT', DoubleEntry.amount, NULL) AS credit";
      $fields[] = "IF(Entry.type = 'CHARGE', 1, -1) * DoubleEntry.amount AS balance";
    }
    else {
      if (count(array_intersect($params['fields'], array('applied'))) == 1)
	$fields[] = ('SUM(COALESCE(AppliedPayment.amount,0)' .
		     '    + COALESCE(AppliedCharge.amount,0)) AS applied');

      if (count(array_intersect($params['fields'], array('debit', 'credit'))) >= 1) {
	$fields = array_merge($fields,
			      $this->Entry->DoubleEntry->debitCreditFields());
	/*       $fields = array_merge($fields, */
	/* 			    $this->Entry->Account->debitCreditFields()); */
	/*       $fields[] = "IF(Entry.crdr = 'CREDIT', DoubleEntry.amount, NULL) AS credit"; */
	/*       $fields[] = "IF(Entry.crdr = 'DEBIT',  DoubleEntry.amount, NULL) AS debit"; */
	/*       $fields[] = "IF(Account.type IN Entry.crdr = 'DEBIT',  DoubleEntry.amount, NULL) AS debit"; */
      }
    }

    if ($params['action'] === 'collected')
      $fields[] = 'MAX(Receipt.stamp) AS last_paid';

    return $fields;
  }

  function jqGridDataConditions(&$params, &$model) {
    $conditions = parent::jqGridDataConditions($params, $model);

    if ($params['action'] === 'collected') {
      extract($params['custom']);

      if (!isset($params['custom']['account_id']))
	die("INTERNAL ERROR: ACCOUNT ID NOT SET");

      if (!empty($collected_from_date))
	$conditions[]
	  = array('Receipt.stamp >=' =>
		  $this->Entry->Transaction->dateFormatBeforeSave($collected_from_date));

      if (!empty($collected_through_date))
	$conditions[]
	  = array('Receipt.stamp <=' =>
		  $this->Entry->Transaction->dateFormatBeforeSave($collected_through_date . ' 23:59:59'));

      if (isset($collected_payment_accounts))
	$conditions[] = array('PaymentAccount.id' => $collected_payment_accounts);
      else
	$conditions[] = array('NOT' => array(array('PaymentAccount.id' => null)));
    }

    if (isset($params['custom']['ledger_id'])) {
      $ledger_id = $params['custom']['ledger_id'];
      $conditions[] = array('Ledger.id' => $ledger_id);
    }

    if (isset($params['custom']['reconcile_id'])) {
      $conditions[] = array('OR' =>
			    array('AppliedCharge.id' => $reconcile_id),
			    array('AppliedPayment.id' => $reconcile_id));
    }

    if (isset($params['custom']['account_id'])) {
      $account_id = $params['custom']['account_id'];
      $conditions[] = array('Account.id' => $account_id);
    }

    if (isset($params['custom']['customer_id'])) {
      $customer_id = $params['custom']['customer_id'];
      $conditions[] = 
	array('OR' =>
	      array(array(array('Entry.type' => 'CHARGE'),
			  array('DoubleEntry.customer_id' => $customer_id)),
		    array(array('Entry.type' => 'PAYMENT'),
			  array('ChargeDoubleEntry.customer_id' => $customer_id)),
		    ),
	      );
    }

    if (isset($params['custom']['lease_id'])) {
      $lease_id = $params['custom']['lease_id'];
      $conditions[] = 
	array('OR' =>
	      array(array(array('Entry.type' => 'CHARGE'),
			  array('DoubleEntry.lease_id' => $lease_id)),
		    array(array('Entry.type' => 'PAYMENT'),
			  array('ChargeDoubleEntry.lease_id' => $lease_id)),
		    ),
	      );
/* 	array('OR' => */
/* 	      array('AND' => */
/* 		    array(array('Entry.type' => 'CHARGE'), */
/* 			  array('DoubleEntry.lease_id' => $lease_id)) */
/* 		    ), */
/* 	      array('AND' => */
/* 		    array(array('Entry.type' => 'PAYMENT'), */
/* 			  array('ChargeDoubleEntry.lease_id' => $lease_id)), */
/* 		    ), */
/* 	      ); */
    }

    if (isset($params['custom']['transaction_id'])) {
      $conditions[] = 
	array('Transaction.id' => $params['custom']['transaction_id']);
    }

    return $conditions;
  }

  function jqGridRecordLinks(&$params, &$model, &$records, $links) {
    $links['Transaction']    = array('id');
    $links['Entry']    = array('id');
    $links['Account']        = array('controller' => 'accounts', 'name');
    $links['DebitAccount']   = array('controller' => 'accounts', 'name');
    $links['CreditAccount']  = array('controller' => 'accounts', 'name');
    $links['MonetarySource'] = array('name');
    $links['Customer']       = array('name');
    $links['Lease']          = array('number');
    $links['Unit']           = array('name');
    return parent::jqGridRecordLinks($params, $model, $records, $links);
  }

  function jqGridDataGroup(&$params, &$model) {
    return parent::jqGridDataGroup($params, $model);
  }

  function jqGridDataOrder(&$params, &$model, $index, $direction) {
/*     if ($index === 'balance') */
/*       return ($index .' '. $direction); */
    $order = parent::jqGridDataOrder($params, $model, $index, $direction);

    if ($index === 'Transaction.stamp') {
      $order[] = 'Entry.id ' . $direction;
    }

    return $order;
  }

  function jqGridDataRecords(&$params, &$model, $query) {
    if ($params['action'] === 'collected') {
      $tquery = array_diff_key($query, array(/*'fields'=>1,*/'group'=>1,'limit'=>1,'order'=>1));
      $tquery['group']  = array('AppliedPayment.id');
      $tquery['fields'] = array("IF(Entry.type = 'CHARGE',",
				"   SUM(COALESCE(AppliedCharge.amount,0)),",
				"   SUM(COALESCE(AppliedPayment.amount,0)))",
				" AS 'applied'",

				"Charge.amount - (",
				"IF(Entry.type = 'CHARGE',",
				"   SUM(COALESCE(AppliedCharge.amount,0)),",
				"   SUM(COALESCE(AppliedPayment.amount,0)))",
				") AS 'balance'",
				);

      $total = $model->find('first', $tquery);
      $params['userdata']['total']   = $total[0]['applied'];
      $params['userdata']['balance'] = $total[0]['balance'];
    }

    return parent::jqGridDataRecords($params, $model, $query);
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: reverse the ledger entry
   */

  function reverse($id) {
    $this->Entry->reverse($id);
    $this->redirect(array('action'=>'view', $id));
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: view
   *  - Displays information about a specific entry
   */

  function view($id = null) {
    if (!$id) {
      $this->Session->setFlash(__('Invalid Item.', true));
      $this->redirect(array('controller' => 'accounts', 'action'=>'index'));
    }

    // Get the Entry and related fields
    $entry = $this->Entry->find
      ('first',
       array('contain' => array
	     ('Account' => array('id', 'name', 'type', 'trackable'),
	      'DoubleEntry' => array
	      (//'fields' => array('id'),
	       'DebitEntry'  => array('fields' => array('id', 'crdr')),
	       'CreditEntry' => array('fields' => array('id', 'crdr')),
	       'Transaction' => array('fields' => array('id', 'stamp')),
	       'Customer' => array('fields' => array('id', 'name')),
	       'Lease' => array('fields' => array('id')),
	       ),
	      ),

	     'conditions' => array('Entry.id' => $id),
	     ));
    
    $entry['Entry']['opposite_crdr'] =
      ucfirst($this->Entry->Account->fundamentalOpposite($entry['Entry']['crdr']));
    $entry['Entry']['matching_entry_id'] =
      $entry['DoubleEntry'][
			    ucfirst(strtolower($entry['Entry']['opposite_crdr'])) .
			    'Entry']['id'];
/*     if ($entry['DoubleEntry']['DebitEntry']['id'] == $entry['Entry']['id']) */
/*       $entry['Entry']['matching_entry_id'] = $entry['DoubleEntry']['CreditEntry']['id']; */
/*     if ($entry['DoubleEntry']['CreditEntry']['id'] == $entry['Entry']['id']) */
/*       $entry['Entry']['matching_entry_id'] = $entry['DoubleEntry']['DebitEntry']['id']; */
    //pr(compact('entry'));

    $reconciled = $this->Entry->reconciledEntries($id);
    //pr(compact('reconciled'));


/*     // REVISIT <AP>: 20090711 */
/*     //  It's not clear whether we should be able to reverse charges that have */
/*     //  already been paid/cleared/reconciled.  Certainly, that will be the */
/*     //  case when someone has pre-paid and then moves out early.  However, this */
/*     //  will work well for items accidentally charged but not yet paid for. */
/*     if ((!$entry['DebitLedger']['Account']['trackable'] || */
/* 	 $stats['debit']['amount_reconciled'] == 0) && */
/* 	(!$entry['CreditLedger']['Account']['trackable'] || */
/* 	 $stats['credit']['amount_reconciled'] == 0) */

/* 	&& 0 */

/* 	) */
/*       { */
/* 	// Set up dynamic menu items */
/* 	$this->sidemenu_links[] = */
/* 	  array('name' => 'Operations', 'header' => true); */

/* 	$this->sidemenu_links[] = */
/* 	  array('name' => 'Undo', */
/* 		'url' => array('action' => 'reverse', */
/* 			       $id)); */
/*       } */

/*     if ($this->Entry->Ledger->Account->type */
/* 	($entry['CreditLedger']['Account']['id']) == 'INCOME') */
/*       { */
/* 	// Set up dynamic menu items */
/* 	$this->sidemenu_links[] = */
/* 	  array('name' => 'Operations', 'header' => true); */

/* 	$this->sidemenu_links[] = */
/* 	  array('name' => 'Reverse', */
/* 		'url' => array('action' => 'reverse', */
/* 			       $id)); */
/*       } */

    // Prepare to render.
    $title = "Ledger Entry #{$entry['Entry']['id']}";
    $this->set(compact('entry', 'title', 'reconciled'));
  }

  function tst($id = null) {
    $entry = $this->Entry->find
      ('first',
       array('contain' => array('Account',

			     'DoubleEntry',

				'Payment' => array('fields' => array('Payment.*'/*, 'AppliedPayment.*'*/),
						   'DoubleEntry'/* => array('alias' => 'PaymentDoubleEntry')*/),
			     'Charge' => array('fields' => array('Charge.*'/*, 'AppliedCharge.*'*/),
					       'DoubleEntry'/* => array('alias' => 'ChargeDoubleEntry')*/),
			     ),
	     'conditions' => array('Entry.id' => $id),
	     ));
    pr($entry);
  }

}