const std = @import("std");

pub fn logFn(
    comptime message_level: std.log.Level,
    comptime scope: @TypeOf(.enum_literal),
    comptime format: []const u8,
    args_: anytype,
) void {
    const prefix = comptime blk: {
        const level_text = lt: {
            switch (message_level) {
                .err => {
                    break :lt "\x1b[31merror  \x1b[0m";
                },
                .warn => {
                    break :lt "\x1b[33mwarning\x1b[0m";
                },
                .info => {
                    break :lt "\x1b[32minfo   \x1b[0m";
                },
                .debug => {
                    break :lt "\x1b[34mdebug  \x1b[0m";
                },
            }
        };
        const scope_prefix = scope: {
            if (scope == .default) {
                break :scope "";
            }
            break :scope " \x1b[90m[\x1b[0m" ++ @tagName(scope) ++ "\x1b[90m]\x1b[0m";
        };

        break :blk level_text ++ scope_prefix ++ "\x1b[90m \x1b[0m";
    };

    const stderr = std.fs.File.stderr().deprecatedWriter();
    var bw = std.io.bufferedWriter(stderr);
    const writer = bw.writer();

    std.debug.lockStdErr();
    defer std.debug.unlockStdErr();
    nosuspend {
        writer.print(prefix ++ format ++ "\x1b[0m\n", args_) catch return;
        bw.flush() catch return;
    }
}