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);
        }
    }
}