<?php

class AccountsController extends AppController {

  var $uses = array('Account', 'LedgerEntry');

  var $sidemenu_links =
    array(array('name' => 'Accounts',        'header' => true),
	  array('name' => 'All',             'url' => array('controller' => 'accounts', 'action' => 'all')),
	  array('name' => 'Asset',           'url' => array('controller' => 'accounts', 'action' => 'asset')),
	  array('name' => 'Liability',       'url' => array('controller' => 'accounts', 'action' => 'liability')),
	  array('name' => 'Equity',          'url' => array('controller' => 'accounts', 'action' => 'equity')),
	  array('name' => 'Income',          'url' => array('controller' => 'accounts', 'action' => 'income')),
	  array('name' => 'Expense',         'url' => array('controller' => 'accounts', 'action' => 'expense')),
	  array('name' => 'Bank Deposit',    'url' => array('controller' => 'accounts', 'action' => 'deposit')),
	  );


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * override: sideMenuLinks
   *  - Generates controller specific links for the side menu
   */
  function sideMenuLinks() {
    return array_merge(parent::sideMenuLinks(), $this->sidemenu_links);
  }

  
  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: index / asset / liability / equity / income / expense / all
   *  - Generate a chart of accounts
   */

  function index()     { $this->all(); }
  function asset()     { $this->gridView('Asset Accounts'); }
  function liability() { $this->gridView('Liability Accounts'); }
  function equity()    { $this->gridView('Equity Accounts'); }
  function income()    { $this->gridView('Income Accounts'); }
  function expense()   { $this->gridView('Expense Accounts'); }
  function all()       { $this->gridView('All Accounts',       'all'); }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * virtuals: gridData
   *  - With the application controller handling the gridData action,
   *    these virtual functions ensure that the correct data is passed
   *    to jqGrid.
   */

  function gridDataSetup(&$params) {
    parent::gridDataSetup($params);
    if (!isset($params['action']))
      $params['action'] = 'all';
  }

  function gridDataCountTables(&$params, &$model) {
    // Our count should NOT include anything extra,
    // so we need the virtual function to prevent
    // the base class from just calling our
    // gridDataTables function
    return parent::gridDataTables($params, $model);
  }

  function gridDataTables(&$params, &$model) {
    return array
      ('link' =>
       array(// Models
	     'CurrentLedger' => array
	     (// Models
	      'LedgerEntry'
	      ),
	     ),
       );
  }

  function gridDataFields(&$params, &$model) {
    $fields = parent::gridDataFields($params, $model);
    return array_merge($fields,
		       $this->Account->Ledger->LedgerEntry->debitCreditFields(true));
  }

  function gridDataConditions(&$params, &$model) {
    $conditions = parent::gridDataConditions($params, $model);

    if (in_array($params['action'], array('asset', 'liability', 'equity', 'income', 'expense'))) {
      $conditions[] = array('Account.type' => strtoupper($params['action']));
    }

    return $conditions;
  }

  function gridDataPostProcessLinks(&$params, &$model, &$records, $links) {
    $links['Account'] = array('name');
    return parent::gridDataPostProcessLinks($params, $model, $records, $links);
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: newledger
   *  - Close the current account ledger and create a new one,
   *    carrying forward any balance if necessary.
   */

  function newledger($id = null) {
    if (!$this->Account->closeCurrentLedger($id)) {
      $this->Session->setFlash(__('Unable to create new Ledger.', true));
    }
    if ($id)
      $this->redirect(array('action'=>'view', $id));
    else
      $this->redirect(array('action'=>'index'));
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: collected
   *  - Displays the items actually collected for the period
   *    e.g. How much was collected in rent from 4/1/09 - 5/1/09
   */
  function collected($id = null) {
    if (!$id) {
      $this->Session->setFlash(__('Invalid Item.', true));
      $this->redirect(array('action'=>'index'));
    }

    $payment_accounts = $this->Account->collectableAccounts();
    //$payment_accounts[$this->Account->nameToID('Closing')] = 'Closing';
    //$payment_accounts[$this->Account->nameToID('Equity')] = 'Equity';
    $default_accounts = array_diff_key($this->Account->paymentAccounts(),
				       array($this->Account->concessionAccountID() => 1));
    $this->set(compact('payment_accounts', 'default_accounts'));

    $this->Account->recursive = -1;
    $account = $this->Account->read(null, $id);
    $account = $account['Account'];

    $title = ($account['name'] . ': Collected Report');
    $this->set(compact('account', 'title'));
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: deposit
   *  - Prepares the books for a bank deposit
   */
  function deposit() {
    if ($this->data) {
      // Action the close based on provided data
      //pr($this->data);

      // Get data about each closed ledger.
      $deposit = array('total' => 0, 'ledgers' => array());
      foreach ($this->data['Tillable']['Ledger'] AS $ledger_id => $ledger) {
	if (!$ledger['checked'])
	  continue;

 	$ledger_entries =
 	  $this->Account->Ledger->find
	  ('all',
	   array('link' => array
		 ('Account' =>
		  array('fields' => array('name')),

		  'LedgerEntry' =>
		  array('fields' => array('id', 'amount'),

			'MonetarySource' =>
			array('fields' => array('name')),

			'Customer' =>
			array('fields' => array('name')),

			//'Transaction' =>
			//array('fields' => array('stamp')),
		   ),
		  ),
		 'fields' => false,
		 'conditions' => array(array('Ledger.id' => $ledger_id),
				       array('LedgerEntry.id IS NOT NULL'),
				       ),
		 ));

	$deposit['total'] += $ledger['amount'];
	$deposit['ledgers'][] = array('id' => $ledger_id,
				      'name' => $ledger['account_name'],
				      'total' => $ledger['amount'],
				      'entries' => $ledger_entries);
      }

      // Perform the accounting work necessary to close the 
      // monetary ledgers and deposit into the bank account.
      $this->Account->closeAndDeposit($deposit['ledgers'], $this->data['Deposit']['Account']['id']);

      $title = 'Account: Deposit Slip';
      $this->set(compact('title', 'deposit'));
      $this->render('deposit_slip');
      return;
    }

    // Prepare a close page...
    $tillable_account = $this->Account->paymentAccounts();
    $depositable_account = $this->Account->depositAccounts();

    foreach ($tillable_account AS &$acct) {
      $acct['Account']['stats'] = $this->Account->stats($acct['Account']['id']);
    }

    $title = 'Account: Prepare Deposit';
    $this->set(compact('title', 'tillable_account', 'depositable_account'));
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: view
   *  - Displays information about a specific account
   */

  function view($id = null) {
    if (!$id) {
      $this->Session->setFlash(__('Invalid Item.', true));
      $this->redirect(array('action'=>'index'));
    }

    // Get details about the account and its ledgers (no ledger entries yet)
    $account = $this->Account->find
      ('first',
       array('contain' =>
	     array(// Models
		   'CurrentLedger' =>
		   array('fields' => array('id', 'sequence', 'name')),

		   'Ledger' =>
		   array('Close' => array
			 ('order' => array('Close.stamp' => 'DESC'))),
		   ),
	     'conditions' => array(array('Account.id' => $id)),
	     )
       );

    // Get all ledger entries of the CURRENT ledger
    $entries = $this->Account->ledgerEntries($id);
    //pr(compact('entries'));
    $account['CurrentLedger']['LedgerEntry'] = $entries;

    // Obtain stats across ALL ledgers for the summary infobox
    $stats = $this->Account->stats($id, true);
    $stats = $stats['Ledger'];

    $this->sidemenu_links[] =
      array('name' => 'Operations',       'header' => true);
    $this->sidemenu_links[] =
      array('name' => 'New Ledger',       'url' => array('action' => 'newledger', $id));
    $this->sidemenu_links[] =
      array('name' => 'Collected',        'url' => array('action' => 'collected', $id));

    // Prepare to render
    $title = 'Account: ' . $account['Account']['name'];
    $this->set(compact('account', 'title', 'stats'));
  }

  function tst($id) {
    //$entries = $this->Account->($id);
    pr($entries);
  }
}