/**
* Table Definition for core_curr_rate
*/
-require_once 'DB/DataObject.php';
+class_exists('DB_DataObject') ? '' : require_once 'DB/DataObject.php';
class Pman_Core_DataObjects_Core_curr_rate extends DB_DataObject
{
public $__table = 'core_curr_rate'; // table name
public $id;
public $curr;
- public $rate;
+ public $rate; // always to USD...
public $from_dt;
public $to_dt;
}
+
+
+
/**
* current rate fetching
*
* this just get's the current rates from the ecb..
*
*
- */
-
- var $rates = array();
+ */
function loadRates()
{
+ static $checked = false;
+ if ($checked ) {
+ return true;
+ }
+ $checked = true;
+
// how often do we need to know this..?
// let's assume we do it once a week..
$x = DB_DataObject::Factory('core_curr_rate');
- $x->whereAdd('from_date > NOW() - INTERVAL 7 DAY');
+ $x->whereAdd('to_dt > NOW()');
if ($x->count()) {
+ // got some data for beyond today..
+
return;
}
-
-
-
- if (!empty($this->rates)) {
- return true;
- }
// load our default rates to start with..
- $dom = simplexml_load_file(dirname(__FILE__).'/eurofxref-daily.xml');
- $this->rates['EUR'] = 1.0;
- $this->rates['TWD'] = 46.7008412;
- $this->rates['VND'] = 26405.3;
+ $dom = simplexml_load_file(dirname(__FILE__).'/../eurofxref-daily.xml');
+ $rates['EUR'] = 1.0;
+ $rates['TWD'] = 46.7008412; // taiwan dorlar
+ $rates['VND'] = 25282.24; // veitnam dong?
foreach($dom->Cube->Cube->Cube as $c) {
//echo '<PRE>';print_r($c );
- $this->rates[(string)$c['currency']] = (string)$c['rate'];
+ $rates[(string)$c['currency']] = (string)$c['rate'];
}
- $this->rates['RMB'] = $this->rates['CNY'] ;
+ $rates['RMB'] = $rates['CNY'] ;
+
+
+
// now try loading from latest..
- $target = ini_get('session.save_path').'/eurofxref-daily.xml';
-
- if (!file_exists($target) || filemtime($target) < (time() - 60*60*24)) {
- // this may fail...
- $f = @file_get_contents('http://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml');
- if (!strlen($f)) {
- return;
- }
- file_put_contents($target,$f);
-
- }
- $dom = simplexml_load_file($target);
- $this->rates['EUR'] = 1.0;
- $this->rates['TWD'] = 46.7008412;
- $this->rates['VND'] = 26405.3;
+ // this may fail...
+ $f = @file_get_contents('http://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml');
+ if (!strlen($f)) {
+ return false;
+ }
+
+ $dom = simplexml_load_string($f);
+ $rates['EUR'] = 1.0;
+
foreach($dom->Cube->Cube->Cube as $c) {
//echo '<PRE>';print_r($c );
- $this->rates[(string)$c['currency']] = (string)$c['rate'];
+ $rates[(string)$c['currency']] = (string)$c['rate'];
+ }
+ $rates['RMB'] = $rates['CNY'] ;
+
+ foreach($rates as $cur=>$in_euro) {
+
+
+ $rate = (1.0 / $rates['USD']) * $in_euro;
+
+
+
+ $ov = DB_DataObject::Factory('core_curr_rate');
+ $ov->curr = $cur;
+ $nl = clone($ov);
+ $ov->orderBy('to_dt DESC');
+ $ov->limit(1);
+
+
+ $nl->from_dt = DB_DataObject::sqlValue("NOW()");
+ $nl->to_dt = DB_DataObject::sqlValue("NOW() + INTERVAL 7 DAY");
+ if ($ov->find(true)) {
+ if (strtotime($ov->to_dt) > time()) {
+ continue;
+ }
+ $nl->from_dt = $ov->to_dt;
+
+
+ if ($ov->rate == $rate) {
+ // modify the old one to expire
+ $oo = clone($ov);
+ $ov->to_dt = $nl->from_dt;
+ $ov->update($oo);
+ continue;
+ }
+ } else {
+ // no previous record...
+ $nl->from_dt = '1970-01-01 00:00:00';
+ }
+ $nl->rate = $rate;
+ // create a new row.
+ $nl->insert();
+
+
+
}
- $this->rates['RMB'] = $this->rates['CNY'] ;
+
+
}
+ function rate($cur, $when)
+ {
+ $when === false ? date('Y-m-d H:i:s') : $when;
+ $this->loadRates(); // check if we have an rates.
+
+ $r = DB_DataObject::factory('core_curr_rate');
+ $r->curr = $cur;
+ $r->whereAdd("from_dt < '" . date('Y-m-d H:i:s', strtotime($when)) . "'");
+
+ $r->orderBy('to_dt ASC');
+ $r->limit(1);
+ if ($r->find(true)) {
+ return $r->rate;
+ }
+ return false;
+ }
+
+ function convert($val, $from, $to, $when = false)
+ {
+
+
+ $fr = $this->rate($from, $when);
+ $tr = $this->rate($to, $when);
+
+ // crappy error handling..
+ if ($fr === false) {
+ return false;
+ }
+ if ($tr === false) {
+ return false;
+ }
+
+ return ((1.0 / $fr) * $val) * $tr;
+
+
+
+ }
+
+ function currentRates()
+ {
+ $this->loadRates();
+ // DB_DataObject::debugLevel(1);
+ $c = DB_DAtaObject::factory('core_curr_rate');
+ $c->whereAdd('from_dt < NOW() AND to_dt > NOW()');
+ $c->find();
+ $ret = array();
+ while($c->fetch()) {
+ $ret[$c->curr] = $c->rate;
+ }
+ return $ret;
+
+
+
+ }
+
+
}
projects / Pman.Core / blobdiff