#!/bin/sh
set -e

echo "Setting up Kiosk..."

cat > /etc/apk/repositories << 'EOF'
http://mirror.fcix.net/alpine/v3.22/main
http://mirror.fcix.net/alpine/v3.22/community
EOF

apk update && apk upgrade

# Install packages
apk add \
    mesa-dri-gallium mesa-egl mesa-gl mesa-gles \
    xorg-server xf86-video-fbdev xf86-input-libinput \
    dbus setxkbmap kbd xrandr xset xinit chromium

# Configure boot with custom config.txt and cmdline.txt (usercfg.txt is used becuase config.txt get's overwritten on updates)
cat > /boot/usercfg.txt << 'EOF'
camera_auto_detect=0
disable_overscan=1
dtoverlay=vc4-kms-v3d
gpu_mem=128
hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=82
config_hdmi_boost=4
boot_delay=0
disable_splash=1
EOF

echo "root=UUID=$(findmnt -no UUID /) modules=sd-mod,usb-storage,ext4 rootfstype=ext4 console=tty3 loglevel=0 vt.global_cursor_default=0" > /boot/cmdline.txt

# Remove unnecessary services
for service in acpid chronyd crond modules seedrng; do
    rc-update del $service 2>/dev/null || true
done

# Create kiosk user
adduser -D -h /srv/kiosk -s /bin/ash kiosk

# Setup kiosk profile
cat > /srv/kiosk/.profile << 'EOF'
#!/bin/sh
if [ -z "$DISPLAY" ] && [ "$(tty)" = "/dev/tty1" ]; then
  exec startx >/dev/null 2>&1
fi
EOF

# Setup xinitrc
cat > /srv/kiosk/.xinitrc << 'EOF'
#!/bin/sh
export DISPLAY=:0
(sleep 2 && xset -dpms s off s noblank) &

while ! ping -c 1 -W 1 google.com > /dev/null 2>&1; do
    sleep 2
done

while true; do
    chromium \
        --kiosk \
        --no-sandbox \
        --disable-dev-shm-usage \
        --force-device-scale-factor=1 \
        --window-size=3840,2160 \
        --disable-features=TranslateUI \
        --disable-component-update \
        --no-first-run \
        --num-raster-threads=4 \
        --use-gl=egl \
        --disable-infobars \
        --disable-session-crashed-bubble \
        --disable-breakpad \
        --disable-sync \
        --disable-translate \
        --metrics-recording-only \
        --disable-default-apps \
        --mute-audio \
        --no-default-browser-check \
        ${KIOSK_URL:-https://benewahauto.com}
    sleep 5
done
EOF

chown -R kiosk:kiosk /srv/kiosk
chmod +x /srv/kiosk/.profile /srv/kiosk/.xinitrc

# Configure autologin
sed -i 's/^tty1::respawn:.*$/tty1::respawn:\/bin\/login -f kiosk/' /etc/inittab

echo "Setup complete! Rebooting..."
reboot