1 files changed, 74 insertions, 0 deletions
diff --git a/src/Logger/EngelsystemLogger.php b/src/Logger/EngelsystemLogger.php
new file mode 100644
index 00000000..db46215c
--- /dev/null
+++ b/src/Logger/EngelsystemLogger.php
@@ -0,0 +1,74 @@
+<?php
+
+namespace Engelsystem\Logger;
+
+use Psr\Log\AbstractLogger;
+use Psr\Log\InvalidArgumentException;
+use Psr\Log\LogLevel;
+
+class EngelsystemLogger extends AbstractLogger
+{
+    protected $allowedLevels = [
+        LogLevel::ALERT,
+        LogLevel::CRITICAL,
+        LogLevel::DEBUG,
+        LogLevel::EMERGENCY,
+        LogLevel::ERROR,
+        LogLevel::INFO,
+        LogLevel::NOTICE,
+        LogLevel::WARNING,
+    ];
+
+    /**
+     * Logs with an arbitrary level.
+     *
+     * @TODO: Implement $context['exception']
+     *
+     * @param mixed  $level
+     * @param string $message
+     * @param array  $context
+     *
+     * @throws InvalidArgumentException
+     */
+    public function log($level, $message, array $context = [])
+    {
+        if (!$this->checkLevel($level)) {
+            throw new InvalidArgumentException();
+        }
+
+        $message = $this->interpolate($message, $context);
+
+        LogEntry_create('Logger: ' . $level, $message);
+    }
+
+    /**
+     * Interpolates context values into the message placeholders.
+     *
+     * @param string $message
+     * @param array  $context
+     * @return string
+     */
+    protected function interpolate($message, array $context = [])
+    {
+        foreach ($context as $key => $val) {
+            // check that the value can be casted to string
+            if (is_array($val) || (is_object($val) && !method_exists($val, '__toString'))) {
+                continue;
+            }
+
+            // replace the values of the message
+            $message = str_replace('{' . $key . '}', $val, $message);
+        }
+
+        return $message;
+    }
+
+    /**
+     * @param string $level
+     * @return bool
+     */
+    protected function checkLevel($level)
+    {
+        return in_array($level, $this->allowedLevels);
+    }
+}