includes/banking.inc

   1 <?php
   2 /**********************************************************************
   3     Copyright (C) FrontAccounting, LLC.
   4         Released under the terms of the GNU Affero General Public License,
   5         AGPL, as published by the Free Software Foundation, either version
   6         3 of the License, or (at your option) any later version.
   7     This program is distributed in the hope that it will be useful,
   8     but WITHOUT ANY WARRANTY; without even the implied warranty of
   9     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  10     See the License here <http://www.gnu.org/licenses/agpl-3.0.html>.
  11 ***********************************************************************/
  12 include_once($path_to_root . "/gl/includes/gl_db.inc");
  13
  14 //----------------------------------------------------------------------------------
  15 //      Check if given account is used by any bank_account.
  16 //      Returns id of first bank_account using account_code, null otherwise.
  17 //
  18 //      Keep in mind that direct posting to bank account is depreciated
  19 //      because we have no way to select right bank account if
  20 //      there is more than one using given gl account.
  21 //
  22 function is_bank_account($account_code)
  23 {
  24         $sql= "SELECT id FROM ".TB_PREF."bank_accounts WHERE account_code='$account_code'";
  25         $result = db_query($sql, "checking account is bank account");
  26         if (db_num_rows($result) > 0) {
  27                 $acct = db_fetch($result);
  28                 return $acct['id'];
  29         } else
  30                 return false;
  31 }
  32
  33 //----------------------------------------------------------------------------------
  34
  35 function is_company_currency($currency)
  36 {
  37         return (get_company_currency() == $currency);
  38 }
  39
  40 //----------------------------------------------------------------------------------
  41
  42 function get_company_currency()
  43 {
  44         $sql= "SELECT curr_default FROM ".TB_PREF."company";
  45         $result = db_query($sql, "retreive company currency");
  46
  47         if (db_num_rows($result) == 0)
  48                 display_db_error("Could not find the requested currency. Fatal.", $sql);
  49
  50         $myrow = db_fetch_row($result);
  51         return $myrow[0];
  52 }
  53
  54 //----------------------------------------------------------------------------------
  55
  56 function get_bank_account_currency($id)
  57 {
  58         $sql= "SELECT bank_curr_code FROM ".TB_PREF."bank_accounts WHERE id='$id'";
  59         $result = db_query($sql, "retreive bank account currency");
  60
  61         $myrow = db_fetch_row($result);
  62         return $myrow[0];
  63 }
  64
  65 //----------------------------------------------------------------------------------
  66
  67 function get_customer_currency($customer_id)
  68 {
  69     $sql = "SELECT curr_code FROM ".TB_PREF."debtors_master WHERE debtor_no = '$customer_id'";
  70
  71         $result = db_query($sql, "Retreive currency of customer $customer_id");
  72
  73         $myrow=db_fetch_row($result);
  74         return $myrow[0];
  75 }
  76
  77 //----------------------------------------------------------------------------------
  78
  79 function get_supplier_currency($supplier_id)
  80 {
  81     $sql = "SELECT curr_code FROM ".TB_PREF."suppliers WHERE supplier_id = '$supplier_id'";
  82
  83         $result = db_query($sql, "Retreive currency of supplier $supplier_id");
  84
  85         $myrow=db_fetch_row($result);
  86         return $myrow[0];
  87 }
  88
  89 //----------------------------------------------------------------------------------
  90
  91 function get_exchange_rate_from_home_currency($currency_code, $date_)
  92 {
  93         if ($currency_code == get_company_currency())
  94                 return 1.0000;
  95
  96         $date = date2sql($date_);
  97
  98         $sql = "SELECT rate_buy, max(date_) as date_ FROM ".TB_PREF."exchange_rates WHERE curr_code = '$currency_code'
  99                                 AND date_ <= '$date' GROUP BY rate_buy ORDER BY date_ Desc LIMIT 1";
 100
 101         $result = db_query($sql, "could not query exchange rates");
 102
 103         if (db_num_rows($result) == 0)
 104         {
 105                 // no stored exchange rate, just return 1
 106                 display_error(
 107                         sprintf(_("Cannot retrieve exchange rate for currency %s as of %s. Please add exchange rate manually on Exchange Rates page."),
 108                                  $currency_code, $date_));
 109                 return 1.000;
 110         }
 111
 112         $myrow = db_fetch_row($result);
 113         return $myrow[0];
 114 }
 115
 116 //----------------------------------------------------------------------------------
 117
 118 function get_exchange_rate_to_home_currency($currency_code, $date_)
 119 {
 120         return 1 / get_exchange_rate_from_home_currency($currency_code, $date_);
 121 }
 122
 123 //----------------------------------------------------------------------------------
 124
 125 function to_home_currency($amount, $currency_code, $date_)
 126 {
 127         $ex_rate = get_exchange_rate_to_home_currency($currency_code, $date_);
 128         return round2($amount / $ex_rate,  user_price_dec());
 129 }
 130
 131 //----------------------------------------------------------------------------------
 132
 133 function get_exchange_rate_from_to($from_curr_code, $to_curr_code, $date_)
 134 {
 135 //      echo "converting from $from_curr_code to $to_curr_code <BR>";
 136         if ($from_curr_code == $to_curr_code)
 137                 return 1.0000;
 138
 139         $home_currency = get_company_currency();
 140         if ($to_curr_code == $home_currency)
 141         {
 142                 return get_exchange_rate_to_home_currency($from_curr_code, $date_);
 143         }
 144
 145         if ($from_curr_code == $home_currency)
 146         {
 147                 return get_exchange_rate_from_home_currency($to_curr_code, $date_);
 148         }
 149
 150         // neither from or to are the home currency
 151          return get_exchange_rate_to_home_currency($from_curr_code, $date_) / get_exchange_rate_to_home_currency($to_curr_code, $date_);
 152 }
 153
 154 //--------------------------------------------------------------------------------
 155
 156 function exchange_from_to($amount, $from_curr_code, $to_curr_code, $date_)
 157 {
 158         $ex_rate = get_exchange_rate_from_to($from_curr_code, $to_curr_code, $date_);
 159         return $amount / $ex_rate;
 160 }
 161
 162 //--------------------------------------------------------------------------------
 163 // Exchange Variations Joe Hunt 2008-09-20 ////////////////////////////////////////
 164
 165 function exchange_variation($pyt_type, $pyt_no, $type, $trans_no, $pyt_date, $amount, $person_type, $neg=false)
 166 {
 167         if ($person_type == payment_person_types::customer())
 168         {
 169                 $trans = get_customer_trans($trans_no, $type);
 170                 $pyt_trans = get_customer_trans($pyt_no, $pyt_type);
 171                 $ar_ap_act = $trans['receivables_account'];
 172                 $person_id = $trans['debtor_no'];
 173                 $curr = $trans['curr_code'];
 174         }
 175         else
 176         {
 177                 $trans = get_supp_trans($trans_no, $type);
 178                 $pyt_trans = get_supp_trans($pyt_no, $pyt_type);
 179                 $supp_accs = get_supplier_accounts($trans['supplier_id']);
 180                 $ar_ap_act = $supp_accs['payable_account'];
 181                 $person_id = $trans['supplier_id'];
 182                 $curr = $trans['SupplierCurrCode'];
 183         }
 184         if (is_company_currency($curr))
 185                 return;
 186         $inv_amt = round2($amount * $trans['rate'], user_price_dec());
 187         $pay_amt = round2($amount * $pyt_trans['rate'], user_price_dec());
 188         if ($inv_amt != $pay_amt)
 189         {
 190                 $diff = $inv_amt - $pay_amt;
 191                 if ($person_type == payment_person_types::supplier())
 192                         $diff = -$diff;
 193                 if ($neg)
 194                         $diff = -$diff;
 195                 $exc_var_act = get_company_pref('exchange_diff_act');
 196                 $memo = systypes::name($type)." ".$trans_no;
 197                 add_gl_trans($pyt_type, $pyt_no, $pyt_date, $ar_ap_act, 0, 0, $memo, -$diff, null, $person_type, $person_id);
 198                 add_gl_trans($pyt_type, $pyt_no, $pyt_date, $exc_var_act, 0, 0, $memo, $diff, null, $person_type, $person_id);
 199         }
 200 }
 201
 202 ?>