on request download and store rate when no already present in database

Author: Vitexus

README.md

@@ -51,6 +51,14 @@ Final configuration is stored in `/etc/cnb-cache/cnb-cache.env` file
 
 After installation the currencies listing is available on the `/cnb-cache/` path.
 
+you can use following URL parameters:
+
+* `currency` - currency code (default: CZK)
+* `when` - date of rate (default: today)
+* `date` - date of rate in format YYYY-MM-DD
+* `age` - age of rate in days (default: 0)
+* `when` - yesterday, beforeyesterday - today is default
+
 * <http://localhost/cnb-cache/?currency=eur> - todays EUR rate
 * <http://localhost/cnb-cache/?currency=USD&when=yesterday> - yesterday $ rate
 

src/SpojeNet/Cnb/ExchangeRate.php

@@ -90,9 +90,10 @@ public function cnbCsv2Data(string $ratesRaw) {
     /**
      * Insert Data to SQL.
      *
-     * @return bool
+     * @return array<string,array<string,string|float|int>>
      */
-    public function storeDay(int $dayBack = 0): void {
+    public function storeDay(int $dayBack = 0): array {
+        $stored = [];
         $datum = self::dateBeforeDays($dayBack);
 
         foreach ($this->cnbCsv2Data($this->exchangeRateRaw($datum)) as $currencyData) {
@@ -101,13 +102,15 @@ public function storeDay(int $dayBack = 0): void {
             if (\array_key_exists($currencyData['code'], $this->currencies)) {
                 if (!$this->recordExist(['code' => $currencyData['code'], 'date' => $datum])) {
                     if ($this->insertToSQL($currencyData)) {
+                        $stored[$currencyData['code']] = $currencyData;
                         $this->addStatusMessage(sprintf(_('Stored: %s for %s'), $currencyData['code'], $currencyData['date']), 'success');
                     }
                 } else {
                     $this->addStatusMessage(sprintf(_('Already present: %s for %s'), $currencyData['code'], $currencyData['date']), 'warning');
                 }
             }
         }
+        return $stored;
     }
 
     public function dropOlder(int $days): void {
@@ -127,7 +130,7 @@ public function getRateInfo($currency, $age): array {
         if($rateInfo){
             $result = $rateInfo[0];
         } else {
-            $result['message'] = 'no record for '. self::dateBeforeDays($age);
+           $result = $this->storeDay($age)[$currency];
         }
 
         $result['age'] = $age;

src/index.php

@@ -26,6 +26,7 @@
 
 $currency = $_GET['currency'] ?? null;
 $when = $_GET['when'] ?? null;
+$date = $when = $_GET['date'] ?? null;
 
 switch ($when) {
     case 'yesterday':
@@ -38,7 +39,11 @@
         break;
 
     default:
-        $age = isset($_GET['age']) ? (int) $_GET['age'] : 0;
+        if($date){
+            $age = (new DateTime())->diff(new DateTime($date))->days;
+        } else {
+            $age = isset($_GET['age']) ? (int) $_GET['age'] : 0;
+        }
 
         break;
 }