feat: improve currency matching

.github/workflows/release.yml

@@ -14,7 +14,7 @@ permissions:
   pull-requests: write
 
 concurrency:
-  group: lint-php-cs-${{ github.head_ref || github.run_id }}
+  group: release-${{ github.head_ref || github.run_id }}
   cancel-in-progress: true
 
 jobs:

README.md

@@ -13,25 +13,18 @@ rate.
 
 Interval for fetch may be adjusted in the admin settings "Auto Currency" section.
 
+**Note**: This is a companion app to Cospend. Without Cospend, this app will not work.
+
 ## Preparing currency data
 
-To make this work, a 3-letter currency code must be in the name of the currency.
+For both main and additional currencies, you must include in the currency name, one of the following:
 
-Currencies of different code lengths are not currently supported (but are planned).
+- Currency symbol (`$`, `€`, `£`, etc.)
+- Currency code (USD, EUR, GBP, etc.) - case insensitive
 
-The currency code will be fetched using the first 3-uppercase-letter occurrence in the name defined
-on Cospend.
+Using one of these will be enough to fetch the correct rate.
 
-For example, to properly set USD as currency, set the name to one of (but not limited to):
-
-- USD
-- $ USD
-- USD $
-- United States Dollars (USD)
-
-Will all be considered "USD" for conversion purposes.
-
-This rule applies to **main** and **additional currencies**.
+For a list of available currencies, see [currencies.json](lib/Service/symbols.json).
 
 To see the full list of available currencies, visit
 [this page](https://cdn.jsdelivr.net/npm/@fawazahmed0/currency-api@latest/v1/currencies.json) and

appinfo/info.xml

@@ -10,33 +10,12 @@
   <description><![CDATA[This NextCloud app automatically fetches currency information for your Cospend projects, and fills
 them up using the main currency as base. No more manually updating exchange rates!
 
-It will automatically run once a day and use your currency names to fetch the correct rate.
+It will automatically run once a day by default and use your currency names to fetch the correct
+rate.
 
-The name will be fetched using the first 3-uppercase-letter appearance in the name.
+Interval for fetch may be adjusted in the admin settings "Auto Currency" section.
 
-For example:
-
-- USD
-- $ USD
-- USD $
-- United States Dollars (USD)
-
-Will all be considered "USD" for conversion purposes.
-
-This rule applies to main and additional currencies.
-
-## Contributing
-
-I am developing this package on my free time, so any support, whether code, issues, or just stars is
-very helpful to sustaining its life. If you are feeling incredibly generous and would like to donate
-just a small amount to help sustain this project, I would be very very thankful!
-
-<a href='https://ko-fi.com/casraf' target='_blank'>
-  <img height='36' style='border:0px;height:36px;' src='https://cdn.ko-fi.com/cdn/kofi1.png?v=3' alt='Buy Me a Coffee at ko-fi.com' />
-</a>
-
-I welcome any issues or pull requests on GitHub. If you find a bug, or would like a new feature,
-don't hesitate to open an appropriate issue and I will do my best to reply promptly.]]></description>
+**Note**: This is a companion app to Cospend. Without Cospend, this app will not work.]]></description>
 	<version>0.2.1</version>
 	<licence>agpl</licence>
 	<author mail="contact@casraf.dev" homepage="https://casraf.dev">Chen Asraf</author>

lib/Service/FetchCurrenciesService.php

@@ -19,11 +19,19 @@ use Psr\Log\LoggerInterface;
 
 class FetchCurrenciesService {
 	private static $EXCHANGE_URL = 'https://cdn.jsdelivr.net/npm/@fawazahmed0/currency-api@latest/v1/currencies/{base}.json';
+	private static $SYMBOLS_FILE = __DIR__ . '/symbols.json';
+
 	private IAppConfig $config;
+
 	private CurrencyMapper $currencyMapper;
+
 	private CospendProjectMapper $projectMapper;
+
 	private LoggerInterface $logger;
 
+	/* @var array<string, array<symbol: string, name: string, symbol_native: string, decimal_digits: int, rounding: int, code: string, name_plural: string>> */
+	private array $symbols;
+
 	public function __construct(
 		IAppConfig $config,
 		CurrencyMapper $currencyMapper,
@@ -34,6 +42,7 @@ class FetchCurrenciesService {
 		$this->currencyMapper = $currencyMapper;
 		$this->projectMapper = $projectMapper;
 		$this->logger = $logger;
+		$this->loadSymbols();
 	}
 
 	public function fetchCurrencyRates(): void {
@@ -68,8 +77,13 @@ class FetchCurrenciesService {
 
 			foreach ($currencies as $currency) {
 				$cur = $this->getCurrencyName($currency->getName());
+				if ($cur === null) {
+					$this->logger->error('Currency not found: ' . $currency->getName());
+					continue;
+				}
 				$lcur = strtolower($cur);
-				$newRate = floatval(number_format(1 / $json[$lbase][$lcur], 2));
+				$baseRate = $json[$lbase][$lcur];
+				$newRate = floatval(number_format(1 / $baseRate, 2));
 				$currency->setExchangeRate($newRate);
 				$this->logger->info('Setting exchange rate for currency ' . $cur . ' to ' . $newRate);
 				$this->currencyMapper->update($currency);
@@ -80,17 +94,35 @@ class FetchCurrenciesService {
 		$this->config->setValueString('autocurrency', 'last_update', $lastUpdate);
 	}
 
-	private function getCurrencyName(string $name): string {
-		// find 3-letter currency code for the base currency
-		preg_match('/([A-Z]{3})/', $name, $matches);
+	/** Match the currency name from the known currencies. **/
+	private function getCurrencyName(string $name): ?string {
+		foreach ($this->symbols as $cur => $currency) {
+			// e.g. usd
+			$id = strtolower($cur);
+			if (strtolower($name) === $id) {
+				return $id;
+			}
 
-		$this->logger->info('Matches: ' . json_encode($matches));
+			// e.g. $
+			$symbol = $currency['symbol'];
+			if (str_contains($name, $symbol)) {
+				return $id;
+			}
 
-		if (count($matches) === 2) {
-			$name = $matches[1];
+			// e.g. $ USD
+			preg_match('/\b' . $id . '\b/', strtolower($name), $matches);
+			if (count($matches) > 0) {
+				return $id;
+			}
 		}
 
-		return $name;
+		return null;
+	}
+
+	/** Load symbols from the symbols.json file */
+	private function loadSymbols(): void {
+		$this->symbols = json_decode(file_get_contents(FetchCurrenciesService::$SYMBOLS_FILE), true);
+		$this->logger->info('Loaded symbols: ' . json_encode($this->symbols));
 	}
 
 	/**