<?php

class AccountsController extends AppController {
  var $paginate = array
    ('limit' => 100,
     'link' =>
     array(// Models
	   'CurrentLedger' => array
	   (// Models
	    'LedgerEntry' =>
	    array('fields' =>
		  array('SUM(IF(LedgerEntry.debit_ledger_id  = CurrentLedger.id, LedgerEntry.amount, NULL)) AS debits',
			'SUM(IF(LedgerEntry.credit_ledger_id = CurrentLedger.id, LedgerEntry.amount, NULL)) AS credits',
			"SUM(IF(Account.type IN ('ASSET', 'EXPENSE'),
		                IF(LedgerEntry.debit_ledger_id = CurrentLedger.id, 1, -1),
		                IF(LedgerEntry.credit_ledger_id = CurrentLedger.id, 1, -1)
                                ) * IF(LedgerEntry.amount, LedgerEntry.amount, 0)
                            ) AS balance",
			'COUNT(LedgerEntry.id) AS entries'),
		  'conditions' =>
		  array('OR' =>
			array('LedgerEntry.debit_ledger_id  = CurrentLedger.id',
			      'LedgerEntry.credit_ledger_id = CurrentLedger.id'),
			),
		  ),
	    ),
	   ),
     'group' => 'Account.id',
     'order' => array('Account.name' => 'ASC'));

  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')),
	  );


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * override: sideMenuLinks
   *  - Generates controller specific links for the side menu
   */
  function sideMenuLinks() {
    return array_merge(parent::sideMenuLinks(), $this->sidemenu_links);
  }

  
  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: index
   *  - Lists all accounts
   */

  function index() {
    $this->all();
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: asset
   *  - Lists all asset accounts
   */

  function asset() {
    $title = 'Asset Accounts';
    $this->set('title', $title); $this->set('heading', $title);
    $this->set('accounts', $this->paginate(array('Account.type' => 'ASSET')));
    $this->render('index');
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: liability
   *  - Lists all liability accounts
   */

  function liability() {
    $title = 'Liability Accounts';
    $this->set('title', $title); $this->set('heading', $title);
    $this->set('accounts', $this->paginate(array('Account.type' => 'LIABILITY')));
    $this->render('index');
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: equity
   *  - Lists all equity accounts
   */

  function equity() {
    $title = 'Equity Accounts';
    $this->set('title', $title); $this->set('heading', $title);
    $this->set('accounts', $this->paginate(array('Account.type' => 'EQUITY')));
    $this->render('index');
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: income
   *  - Lists all income accounts
   */

  function income() {
    $title = 'Income Accounts';
    $this->set('title', $title); $this->set('heading', $title);
    $this->set('accounts', $this->paginate(array('Account.type' => 'INCOME')));
    $this->render('index');
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: expense
   *  - Lists all expense accounts
   */

  function expense() {
    $title = 'Expense Accounts';
    $this->set('title', $title); $this->set('heading', $title);
    $this->set('accounts', $this->paginate(array('Account.type' => 'EXPENSE')));
    $this->render('index');
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: all
   *  - Lists all accounts
   */

  function all() {
    $title = 'All Accounts';
    $this->set('title', $title); $this->set('heading', $title);
    $this->set('accounts', $this->paginate());
    $this->render('index');
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * 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)
    $this->Account->Behaviors->attach('Containable');
    $account = $this->Account->find
      ('first',
       array('contain' =>
	     array(// Models
		   'CurrentLedger' =>
		   array('fields' => array('id', 'sequence')),

		   'Ledger' =>
		   array('order' => array('Ledger.open_stamp' => 'DESC')),
		   ),
	     'conditions' => array(array('Account.id' => $id)),
	     )
       );
    $this->Account->Behaviors->detach('Containable');

    // Simply debug stuff... testing.
    $cond = null;
    //$cond = array('Transaction.stamp >' => '2009-05-16');

    // Get all ledger entries of the CURRENT ledger
    //$crap = $this->Account->findSecurityDeposits($id);
    //$crap = $this->Account->findAccountRelatedEntries($id, 8);
    //pr(array('crap', $crap));
/*     $this->autoRender = false; */
/*     return; */

    // Get all ledger entries of the CURRENT ledger
    $account['CurrentLedger']['LedgerEntry']
      = $this->Account->findCurrentLedgerEntries($id, $cond);
    //pr(array('Account summary', $account));

    // Summarize each ledger
    foreach($account['Ledger'] AS &$ledger)
      $ledger = array_merge($ledger,
			    $this->Account->Ledger->stats($ledger['id']));

    // Obtain the overall account balance
    $account['Account'] =
      array_merge($account['Account'],
		  array('stats' => $this->Account->stats($id)));
    $balance = $account['Account']['stats']['Ledger']['balance'];

    // Prepare to render
    $title = 'Account: ' . $account['Account']['name'];
    $this->set(compact('account', 'title', 'balance'));
  }
}