#!/usr/bin/sh
# @author nate zhou
# @since 2026
# mag - toggling magnifier for Wayland and X

set_tools() {
    screenshot="${XDG_RUNTIME_DIR}/mag.png"
    if [ "$XDG_SESSION_TYPE" = "wayland" ]; then
        shooter="grim -l 0 $screenshot"
        viewer="swayimg -F --class=Magnifier $screenshot"
    elif [ -n "$XAUTHORITY" ]; then
        shooter="maim -m 1 -u $screenshot"
        viewer="nsxiv -f --no-bar --name Magnifier $screenshot"
    fi
}

magnify() {
    $shooter && $viewer
}

toggle() {
    pgrep -f "$viewer" && pkill -f "$viewer" || magnify
}

cleanup() {
    rm -f "$screenshot"
}

set_tools

trap cleanup EXIT TERM INT HUP

toggle