<?php

class LedgerEntriesController 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 jqGridDataTables(&$params, &$model) {
    $link =
      array(// Models
	     'Transaction' =>
	     array('fields' => array('id', 'stamp'),
		   ),

	     'MonetarySource' =>
	     array('fields' => array('id', 'name'),
		   ),

	    );

    if (isset($params['custom']['account_ftype'])) {
      $ftype = $params['custom']['account_ftype'];
      $ftype = ucfirst($ftype);
      //$ftype = $this->LedgerEntry->DebitLedger->Account->fundamentalOpposite($ftype);
      $link[$ftype . 'Ledger'] =
	array('fields' => array('id', 'sequence'),
	      'Account' => array('class' => 'Account',
				 'fields' => array('id', 'name'),
				 ),
	      );
    }
    elseif (isset($params['custom']['ledger_id'])) {
      $ledger_id = $params['custom']['ledger_id'];
      $link['Ledger'] =
	array('fields' => array('id', 'sequence'),
	      'conditions' => ("Ledger.id = IF(LedgerEntry.debit_ledger_id = $ledger_id," .
			       "               LedgerEntry.credit_ledger_id," .
			       "               LedgerEntry.debit_ledger_id)"),
	      'Account' => array(
				 'fields' => array('id', 'name'),
				 ),
	      );
    }
    else {
      $link['DebitLedger'] =
	array('fields' => array('id', 'sequence'),
	      'DebitAccount' => array('class' => 'Account',
				      'fields' => array('id', 'name'),
				      ),
	      );

      $link['CreditLedger'] =
	array('fields' => array('id', 'sequence'),
	      'CreditAccount' => array('class' => 'Account',
				       'fields' => array('id', 'name'),
				       ),
	      );
    }

    if (isset($params['custom']['reconcile_id'])) {
      $ftype = $params['custom']['account_ftype'];
      $ftype = $this->LedgerEntry->DebitLedger->Account->fundamentalOpposite($ftype);
      $ftype = ucfirst($ftype);
      $link[$ftype.'ReconciliationLedgerEntry'] =
	array('fields' => array('Reconciliation.amount'));
    }

    return array('link' => $link);
  }

  function jqGridDataFields(&$params, &$model) {
    $ledger_id = (isset($params['custom']['ledger_id'])
		  ? $params['custom']['ledger_id']
		  : null);
    $account_type = (isset($params['custom']['account_type'])
		     ? $params['custom']['account_type']
		     : null);

    return $model->ledgerContextFields($ledger_id, $account_type);
  }

  function jqGridDataConditions(&$params, &$model) {
    $ledger_id = (isset($params['custom']['ledger_id'])
		  ? $params['custom']['ledger_id']
		  : null);
    $account_type = (isset($params['custom']['account_type'])
		     ? $params['custom']['account_type']
		     : null);

    $conditions = parent::jqGridDataConditions($params, $model);

    if ($params['action'] === 'ledger') {
      $conditions[] = $model->ledgerContextConditions($ledger_id, $account_type);
    }
    if (isset($params['custom']['reconcile_id'])) {
      $ftype = $params['custom']['account_ftype'];
      //$ftype = $this->LedgerEntry->DebitLedger->Account->fundamentalOpposite($ftype);
      $conditions[] = array('Reconciliation.'.$ftype.'_ledger_entry_id' => $params['custom']['reconcile_id']);
    }

    return $conditions;
  }

  function jqGridRecordLinks(&$params, &$model, &$records, $links) {
    $links['Transaction']    = array('id');
    $links['LedgerEntry']    = array('id');
    if (isset($params['custom']['account_ftype']) || isset($params['custom']['ledger_id'])) {
      $links['Account']   = array('controller' => 'accounts', 'name');
    }
    else {
      $links['DebitAccount']   = array('controller' => 'accounts', 'name');
      $links['CreditAccount']  = array('controller' => 'accounts', 'name');
    }
    $links['MonetarySource'] = array('name');
    return parent::jqGridRecordLinks($params, $model, $records, $links);
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * 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 LedgerEntry and related fields
    $entry = $this->LedgerEntry->find
      ('first',
       array('contain' => array('MonetarySource.id',
				'MonetarySource.MonetaryType.id',
				'Transaction.id',
				'Transaction.stamp',
				'DebitLedger.id',
				'DebitLedger.sequence',
				'DebitLedger.account_id',
				'CreditLedger.id',
				'CreditLedger.sequence',
				'CreditLedger.account_id',
				),

	     'fields' => array('LedgerEntry.id',
			       'LedgerEntry.amount',
			       'LedgerEntry.comment'),

	     'conditions' => array('LedgerEntry.id' => $id),
	     ));

    // Because 'DebitLedger' and 'CreditLedger' both relate to 'Account',
    // CakePHP will not include them in the LedgerEntry->find (or so it
    // seems).  We'll have to break out each Account separately.

    // Get the Account from DebitLedger
    $entry['DebitLedger'] += $this->LedgerEntry->DebitLedger->Account->find
      ('first',
       array('contain' => true,
	     'fields' => array('Account.id', 'Account.name', 'Account.type', 'Account.trackable'),
	     'conditions' => array('Account.id' => $entry['DebitLedger']['account_id']),
	     ));

    // Get the Account from CreditLedger
    $entry['CreditLedger'] += $this->LedgerEntry->CreditLedger->Account->find
      ('first',
       array('contain' => true,
	     'fields' => array('Account.id', 'Account.name', 'Account.type', 'Account.trackable'),
	     'conditions' => array('Account.id' => $entry['CreditLedger']['account_id']),
	     ));

    // Get the reconciliation balances for this ledger entry
    $stats = $this->LedgerEntry->stats($id);
    if ($entry['DebitLedger']['Account']['trackable'])
      $stats['debit_amount_remaining'] = $entry['LedgerEntry']['amount'] - $stats['debit_amount_reconciled'];
    if ($entry['CreditLedger']['Account']['trackable'])
      $stats['credit_amount_remaining'] = $entry['LedgerEntry']['amount'] - $stats['credit_amount_reconciled'];
    //pr($stats);

    $reconciled = $this->LedgerEntry->findReconciledLedgerEntries($id);
    //pr($reconciled);

    // Prepare to render.
    $title = "Ledger Entry #{$entry['LedgerEntry']['id']}";
    $this->set(compact('entry', 'title', 'reconciled', 'stats'));
  }
}