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logging.d

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+module angel.utils.logging;
+
+// Internal imports
+import angel.config : config;
+import angel.utils.constants;
+// External imports
+import std.stdio;
+import std.datetime;
+import std.file;
+import std.format;
+import std.string;
+
+enum LogLevel {
+    Debug,
+    Event,
+    Warning,
+    Error
+}
+
+class Logger {
+    private static string getTimestamp() {
+        auto now = Clock.currTime();
+        return format!"%04d-%02d-%02d %02d:%02d:%02d"(
+            now.year, now.month, now.day,
+            now.hour, now.minute, now.second
+        );
+    }
+
+    private static string getLogSymbol(LogLevel level) {
+        switch (level) {
+            case LogLevel.Debug: return "[*]";
+            case LogLevel.Event: return "[i]";
+            case LogLevel.Warning: return "[!]";
+            case LogLevel.Error: return "[E]";
+            default: return "[?]";
+        }
+    }
+
+    private static void writeToFile(string message) {
+        auto file = File(Constants.logFilePath, "a");
+        file.write(message ~ "\n");
+        file.close();
+    }
+
+    public static void log(LogLevel level, string message) {
+        auto timestamp = getTimestamp();
+        auto symbol = getLogSymbol(level);
+
+        auto logMessage = timestamp ~ " " ~ symbol ~ " " ~ message;
+
+        writeToFile(logMessage);
+        if (level == LogLevel.Debug && !config.debug_mode) {
+            return;
+        } else {
+            writeln(logMessage);
+        }
+    }
+}