#!/bin/sh -eu

MACOS_VER_MAJOR=$(uname -r | cut -f 1 -d .)

MSG="Please use an alternative build for macOS older than 12, available at:
https://github.com/CESNET/UltraGrid/releases/download/continuous/UltraGrid-nightly-alt.dmg"

if [ "$MACOS_VER_MAJOR" -lt 21 ]; then
        BASENAME=$(basename "$0")
        if [ "$BASENAME" = uv-qt ]; then
                osascript -e "tell application \"SystemUIServer\"
display dialog \"$MSG\"
end"
        else
                echo "$MSG" >&2
        fi
        exit 1
fi

exec "$0-real" "$@"