<?php

require_once($lib_dir."transaction.php");

/* Account management */

function nb_accounts() {
  global $acc;

  return count($acc);
}

function get_all_accounts() {
  global $acc;

  return $acc;
}

function get_account($id) {
  global $acc;

  if (count($acc))
    foreach ($acc as $a)
      if ($a["id"] == $id)
	return $a["description"];

  return "";
}

function get_account_maxlength() {
  global $acc;

  $maxlength = 0;
  if (count($acc))
    foreach ($acc as $a)
      if (strlen($a["description"]) > $maxlength)
        $maxlength = strlen($a["description"]);

  return $maxlength;
}

function add_account($desc) {
  global $acc;
 
  if (strlen($desc) == 0)
    return false;

  $id = "";
  if (count($acc))
    foreach ($acc as $a)
      if ($a["id"] > $id)
	$id = $a["id"];

  $acc[] = array("id" => ++$id, "description" => $desc);
  return store_account($id);
}

function modify_account($id, $desc) {
  global $acc;
 
  if (strlen($desc) == 0)
    return false;
  
  if (count($acc))
    foreach ($acc as $key => $a)
      if ($a["id"] == $id) {
	$acc[$key]["description"] = $desc;
	return store_account($id);
      }

  return false;
}

function delete_account($id) {
  global $acc;
  global $trans;

  /* check consistance before account deletion */
  if (count($trans)) {
    $t_id = array();
    foreach ($trans as $key => $t)
      if ($t["accid"] == $id) {
	unset($trans[$key]);
	$t_id[] = $t["id"];
      }
    if (count($t_id))
      store_transaction($t_id);
  }
  
  if (count($acc))
    foreach ($acc as $key => $a)
      if ($a["id"] == $id) {
	unset($acc[$key]);
	return store_account($id);
      }

  return false;
}

/* Initialization */

include($lib_dir.$db_type."/account.php");

?>