/**
* Source currency
* @param $source
*
* Destination currency
* @param $destination
*
* Amount to convert
* @param $amount
*/
function convert($source, $destination, $amount)
{
$currencies = $this->source->fetch();
if (!isset($currencies[$source])) {
throw new \RuntimeException("Currency not found: {$source}");
}
if (!isset($currencies[$destination])) {
throw new \RuntimeException("Currency not found: {$destination}");
}
return $amount * $currencies[$destination] / $currencies[$source];
}
/**
* Generates, executes SQL query and fetches the single row.
* @return Entity|FALSE array on success, FALSE if no next record
*/
public function fetch()
{
$this->buildQuery();
return $this->dataSource->fetch();
}
function render()
{
return view('converter::index', ['endpoint' => config('currency.api_uri'), 'values' => $this->source->fetch()]);
}
