includes/banking.inc

   1 <?php
   2
   3 include_once($path_to_root . "/gl/includes/gl_db.inc");
   4
   5 //----------------------------------------------------------------------------------
   6
   7 function is_bank_account($account_code)
   8 {
   9         $sql= "SELECT account_code FROM ".TB_PREF."bank_accounts WHERE account_code='$account_code'";
  10         $result = db_query($sql, "retreive bank account currency");
  11
  12         return (db_num_rows($result) > 0);
  13 }
  14
  15 //----------------------------------------------------------------------------------
  16
  17 function is_company_currency($currency)
  18 {
  19         return (get_company_currency() == $currency);
  20 }
  21
  22 //----------------------------------------------------------------------------------
  23
  24 function get_company_currency()
  25 {
  26         $sql= "SELECT curr_default FROM ".TB_PREF."company";
  27         $result = db_query($sql, "retreive company currency");
  28
  29         if (db_num_rows($result) == 0)
  30                 display_db_error("Could not find the requested currency. Fatal.", $sql);
  31
  32         $myrow = db_fetch_row($result);
  33         return $myrow[0];
  34 }
  35
  36 //----------------------------------------------------------------------------------
  37
  38 function get_bank_account_currency($bankAccount)
  39 {
  40         $sql= "SELECT bank_curr_code FROM ".TB_PREF."bank_accounts WHERE account_code='$bankAccount'";
  41         $result = db_query($sql, "retreive bank account currency");
  42
  43         $myrow = db_fetch_row($result);
  44         return $myrow[0];
  45 }
  46
  47 //----------------------------------------------------------------------------------
  48
  49 function get_customer_currency($customer_id)
  50 {
  51     $sql = "SELECT curr_code FROM ".TB_PREF."debtors_master WHERE debtor_no = '$customer_id'";
  52
  53         $result = db_query($sql, "Retreive currency of customer $customer_id");
  54
  55         $myrow=db_fetch_row($result);
  56         return $myrow[0];
  57 }
  58
  59 //----------------------------------------------------------------------------------
  60
  61 function get_supplier_currency($supplier_id)
  62 {
  63     $sql = "SELECT curr_code FROM ".TB_PREF."suppliers WHERE supplier_id = '$supplier_id'";
  64
  65         $result = db_query($sql, "Retreive currency of supplier $supplier_id");
  66
  67         $myrow=db_fetch_row($result);
  68         return $myrow[0];
  69 }
  70
  71 //----------------------------------------------------------------------------------
  72
  73 function get_exchange_rate_from_home_currency($currency_code, $date_)
  74 {
  75         if ($currency_code == get_company_currency())
  76                 return 1.0000;
  77
  78         $date = date2sql($date_);
  79
  80         $sql = "SELECT rate_buy, max(date_) as date_ FROM ".TB_PREF."exchange_rates WHERE curr_code = '$currency_code'
  81                                 AND date_ <= '$date' GROUP BY rate_buy ORDER BY date_ Desc LIMIT 1";
  82
  83         $result = db_query($sql, "could not query exchange rates");
  84
  85         if (db_num_rows($result) == 0)
  86         {
  87                 // no stored exchange rate, just return 1
  88                 display_error(
  89                         sprintf(_("Cannot retrieve exchange rate for currency %s as of %s. Please add exchange rate manually on Exchange Rates page."),
  90                                  $currency_code, $date_));
  91                 return 1.000;
  92         }
  93
  94         $myrow = db_fetch_row($result);
  95         return $myrow[0];
  96 }
  97
  98 //----------------------------------------------------------------------------------
  99
 100 function get_exchange_rate_to_home_currency($currency_code, $date_)
 101 {
 102         return 1 / get_exchange_rate_from_home_currency($currency_code, $date_);
 103 }
 104
 105 //----------------------------------------------------------------------------------
 106
 107 function to_home_currency($amount, $currency_code, $date_)
 108 {
 109         $ex_rate = get_exchange_rate_to_home_currency($currency_code, $date_);
 110         return round($amount / $ex_rate,  user_price_dec());
 111 }
 112
 113 //----------------------------------------------------------------------------------
 114
 115 function get_exchange_rate_from_to($from_curr_code, $to_curr_code, $date_)
 116 {
 117 //      echo "converting from $from_curr_code to $to_curr_code <BR>";
 118         if ($from_curr_code == $to_curr_code)
 119                 return 1.0000;
 120
 121         $home_currency = get_company_currency();
 122         if ($to_curr_code == $home_currency)
 123         {
 124                 return get_exchange_rate_to_home_currency($from_curr_code, $date_);
 125         }
 126
 127         if ($from_curr_code == $home_currency)
 128         {
 129                 return get_exchange_rate_from_home_currency($to_curr_code, $date_);
 130         }
 131
 132         // neither from or to are the home currency
 133          return get_exchange_rate_to_home_currency($from_curr_code, $date_) / get_exchange_rate_to_home_currency($to_curr_code, $date_);
 134 }
 135
 136 //--------------------------------------------------------------------------------
 137
 138 function exchange_from_to($amount, $from_curr_code, $to_curr_code, $date_)
 139 {
 140         $ex_rate = get_exchange_rate_from_to($from_curr_code, $to_curr_code, $date_);
 141         return $amount / $ex_rate;
 142 }
 143
 144 //--------------------------------------------------------------------------------
 145 // Exchange Variations Joe Hunt 2008-09-20 ////////////////////////////////////////
 146
 147 function exchange_variation($pyt_type, $pyt_no, $type, $trans_no, $pyt_date, $amount, $person_type, $neg=false)
 148 {
 149         if ($person_type == payment_person_types::customer())
 150         {
 151                 $trans = get_customer_trans($trans_no, $type);
 152                 $ar_ap_act = $trans['receivables_account'];
 153                 $person_id = $trans['debtor_no'];
 154                 $curr = $trans['curr_code'];
 155         }
 156         else
 157         {
 158                 $trans = get_supp_trans($trans_no, $type);
 159                 $supp_accs = get_supplier_accounts($trans['supplier_id']);
 160                 $ar_ap_act = $supp_accs['payable_account'];
 161                 $person_id = $trans['supplier_id'];
 162                 $curr = $trans['SupplierCurrCode'];
 163         }
 164         if (is_company_currency($curr))
 165                 return;
 166         $exc_var_act = get_company_pref('exchange_diff_act');
 167         $inv_amt = to_home_currency($amount, $curr, sql2date($trans['tran_date']));
 168         $pay_amt = to_home_currency($amount, $curr, $pyt_date);
 169         if ($inv_amt != $pay_amt)
 170         {
 171                 $diff = $inv_amt - $pay_amt;
 172                 if ($person_type == payment_person_types::supplier())
 173                         $diff = -$diff;
 174                 if ($neg)
 175                         $diff = -$diff;
 176                 $memo = systypes::name($type)." ".$trans_no;
 177                 add_gl_trans($pyt_type, $pyt_no, $pyt_date, $ar_ap_act, 0, 0, $memo, -$diff, null, $person_type, $person_id);
 178                 add_gl_trans($pyt_type, $pyt_no, $pyt_date, $exc_var_act, 0, 0, $memo, $diff, null, $person_type, $person_id);
 179         }
 180 }
 181
 182 ?>