includes/banking.inc

   1 <?php
   2 /**********************************************************************
   3     Copyright (C) FrontAccounting, LLC.
   4         Released under the terms of the GNU General Public License, GPL,
   5         as published by the Free Software Foundation, either version 3
   6         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/gpl-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         $sql= "SELECT id FROM ".TB_PREF."bank_accounts WHERE account_code=".db_escape($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() == $currency);
  38 }
  39
  40 //----------------------------------------------------------------------------------
  41
  42 function get_company_currency()
  43 {
  44         return get_company_pref('curr_default');
  45 }
  46
  47 //----------------------------------------------------------------------------------
  48
  49 function get_bank_account_currency($id)
  50 {
  51         $sql= "SELECT bank_curr_code FROM ".TB_PREF."bank_accounts WHERE id=".db_escape($id);
  52         $result = db_query($sql, "retreive bank account currency");
  53
  54         $myrow = db_fetch_row($result);
  55         return $myrow[0];
  56 }
  57
  58 //----------------------------------------------------------------------------------
  59
  60 function get_customer_currency($customer_id)
  61 {
  62     $sql = "SELECT curr_code FROM ".TB_PREF."debtors_master WHERE debtor_no = ".db_escape($customer_id);
  63
  64         $result = db_query($sql, "Retreive currency of customer $customer_id");
  65
  66         $myrow=db_fetch_row($result);
  67         return $myrow[0];
  68 }
  69
  70 //----------------------------------------------------------------------------------
  71
  72 function get_supplier_currency($supplier_id)
  73 {
  74     $sql = "SELECT curr_code FROM ".TB_PREF."suppliers WHERE supplier_id = ".db_escape($supplier_id);
  75
  76         $result = db_query($sql, "Retreive currency of supplier $supplier_id");
  77
  78         $myrow=db_fetch_row($result);
  79         return $myrow[0];
  80 }
  81
  82 //----------------------------------------------------------------------------------
  83
  84 function get_exchange_rate_from_home_currency($currency_code, $date_)
  85 {
  86         if ($currency_code == get_company_currency() || $currency_code == null)
  87                 return 1.0000;
  88
  89         $date = date2sql($date_);
  90
  91         $sql = "SELECT rate_buy, max(date_) as date_ FROM ".TB_PREF."exchange_rates WHERE curr_code = ".db_escape($currency_code)."
  92                                 AND date_ <= '$date' GROUP BY rate_buy ORDER BY date_ Desc LIMIT 1";
  93
  94         $result = db_query($sql, "could not query exchange rates");
  95
  96         if (db_num_rows($result) == 0)
  97         {
  98                 // no stored exchange rate, just return 1
  99                 display_error(
 100                         sprintf(_("Cannot retrieve exchange rate for currency %s as of %s. Please add exchange rate manually on Exchange Rates page."),
 101                                  $currency_code, $date_));
 102                 return 1.000;
 103         }
 104
 105         $myrow = db_fetch_row($result);
 106         return $myrow[0];
 107 }
 108
 109 //----------------------------------------------------------------------------------
 110
 111 function get_exchange_rate_to_home_currency($currency_code, $date_)
 112 {
 113         return 1 / get_exchange_rate_from_home_currency($currency_code, $date_);
 114 }
 115
 116 //----------------------------------------------------------------------------------
 117
 118 function to_home_currency($amount, $currency_code, $date_)
 119 {
 120         $ex_rate = get_exchange_rate_to_home_currency($currency_code, $date_);
 121         return round2($amount / $ex_rate,  user_price_dec());
 122 }
 123
 124 //----------------------------------------------------------------------------------
 125
 126 function get_exchange_rate_from_to($from_curr_code, $to_curr_code, $date_)
 127 {
 128 //      echo "converting from $from_curr_code to $to_curr_code <BR>";
 129         if ($from_curr_code == $to_curr_code)
 130                 return 1.0000;
 131
 132         $home_currency = get_company_currency();
 133         if ($to_curr_code == $home_currency)
 134         {
 135                 return get_exchange_rate_to_home_currency($from_curr_code, $date_);
 136         }
 137
 138         if ($from_curr_code == $home_currency)
 139         {
 140                 return get_exchange_rate_from_home_currency($to_curr_code, $date_);
 141         }
 142
 143         // neither from or to are the home currency
 144          return get_exchange_rate_to_home_currency($from_curr_code, $date_) / get_exchange_rate_to_home_currency($to_curr_code, $date_);
 145 }
 146
 147 //--------------------------------------------------------------------------------
 148
 149 function exchange_from_to($amount, $from_curr_code, $to_curr_code, $date_)
 150 {
 151         $ex_rate = get_exchange_rate_from_to($from_curr_code, $to_curr_code, $date_);
 152         return $amount / $ex_rate;
 153 }
 154
 155 //--------------------------------------------------------------------------------
 156 // Exchange Variations Joe Hunt 2008-09-20 ////////////////////////////////////////
 157
 158 function exchange_variation($pyt_type, $pyt_no, $type, $trans_no, $pyt_date, $amount, $person_type, $neg=false)
 159 {
 160         global $systypes_array;
 161
 162         if ($person_type == PT_CUSTOMER)
 163         {
 164                 $trans = get_customer_trans($trans_no, $type);
 165                 $pyt_trans = get_customer_trans($pyt_no, $pyt_type);
 166                 $cust_accs = get_branch_accounts($trans['branch_code']);
 167                 $ar_ap_act = $cust_accs['receivables_account'];
 168                 $person_id = $trans['debtor_no'];
 169                 $curr = $trans['curr_code'];
 170                 $date = sql2date($trans['tran_date']);
 171         }
 172         else
 173         {
 174                 $trans = get_supp_trans($trans_no, $type);
 175                 $pyt_trans = get_supp_trans($pyt_no, $pyt_type);
 176                 $supp_accs = get_supplier_accounts($trans['supplier_id']);
 177                 $ar_ap_act = $supp_accs['payable_account'];
 178                 $person_id = $trans['supplier_id'];
 179                 $curr = $trans['curr_code'];
 180                 $date = sql2date($trans['tran_date']);
 181         }
 182         if (is_company_currency($curr))
 183                 return;
 184         $inv_amt = round2($amount * $trans['rate'], user_price_dec());
 185         $pay_amt = round2($amount * $pyt_trans['rate'], user_price_dec());
 186         if ($inv_amt != $pay_amt)
 187         {
 188                 $diff = $inv_amt - $pay_amt;
 189                 if ($person_type == PT_SUPPLIER)
 190                         $diff = -$diff;
 191                 if ($neg)
 192                         $diff = -$diff;
 193                 $exc_var_act = get_company_pref('exchange_diff_act');
 194                 if (date1_greater_date2($date, $pyt_date))
 195                 {
 196                         $memo = $systypes_array[$pyt_type]." ".$pyt_no;
 197                         add_gl_trans($type, $trans_no, $date, $ar_ap_act, 0, 0, $memo, -$diff, null, $person_type, $person_id);
 198                         add_gl_trans($type, $trans_no, $date, $exc_var_act, 0, 0, $memo, $diff, null, $person_type, $person_id);
 199                 }
 200                 else
 201                 {
 202                         $memo = $systypes_array[$type]." ".$trans_no;
 203                         add_gl_trans($pyt_type, $pyt_no, $pyt_date, $ar_ap_act, 0, 0, $memo, -$diff, null, $person_type, $person_id);
 204                         add_gl_trans($pyt_type, $pyt_no, $pyt_date, $exc_var_act, 0, 0, $memo, $diff, null, $person_type, $person_id);
 205                 }
 206         }
 207 }
 208
 209 ?>