#!/bin/bash
set -e

# -----------------------------
# Konfiguration
# -----------------------------
USER_NAME=$(whoami)
HOME_DIR="/home/$USER_NAME"
KIOSK_URL="https://aow.de"   # <- HIER URL ÄNDERN

echo "========================================="
echo " Raspberry Pi / Linux Kiosk Installer"
echo "========================================="

# -----------------------------
# Architektur prüfen
# -----------------------------
ARCH=$(dpkg --print-architecture)

echo "Erkannte Architektur: $ARCH"

case "$ARCH" in
    armhf|arm64)
        CHROMIUM_PKG="chromium-browser"
        ;;
    amd64)
        CHROMIUM_PKG="chromium"
        ;;
    *)
        echo "Nicht unterstützte Architektur: $ARCH"
        exit 1
        ;;
esac

echo "Verwende Chromium Paket: $CHROMIUM_PKG"

# -----------------------------
# Pakete installieren
# -----------------------------
echo "Installiere benötigte Pakete..."
sudo apt update
sudo apt install -y $CHROMIUM_PKG xdotool unclutter

# Binary Pfad ermitteln
if command -v chromium-browser >/dev/null 2>&1; then
    CHROMIUM_BIN="/usr/bin/chromium-browser"
elif command -v chromium >/dev/null 2>&1; then
    CHROMIUM_BIN="/usr/bin/chromium"
else
    echo "Chromium wurde nicht gefunden!"
    exit 1
fi

echo "Chromium Binary: $CHROMIUM_BIN"

# -----------------------------
# kiosk.sh erstellen
# -----------------------------
echo "Erstelle kiosk.sh..."

cat <<EOF > $HOME_DIR/kiosk.sh
#!/bin/bash

export DISPLAY=:0

# Bildschirm nie ausschalten
xset s noblank
xset s off
xset -dpms

# Mauszeiger ausblenden
unclutter -idle 0.5 -root &

# Crash Status korrigieren
sed -i 's/"exited_cleanly":false/"exited_cleanly":true/' $HOME_DIR/.config/chromium/Default/Preferences 2>/dev/null
sed -i 's/"exit_type":"Crashed"/"exit_type":"Normal"/' $HOME_DIR/.config/chromium/Default/Preferences 2>/dev/null

# Chromium im Kiosk starten
$CHROMIUM_BIN \
  --noerrdialogs \
  --disable-infobars \
  --disable-session-crashed-bubble \
  --kiosk "$KIOSK_URL" &

# Optional: Tab-Wechsel Loop
while true; do
  xdotool keydown ctrl+Tab
  xdotool keyup ctrl+Tab
  sleep 10
done
EOF

chmod +x $HOME_DIR/kiosk.sh

# -----------------------------
# systemd Service erstellen
# -----------------------------
echo "Erstelle systemd Service..."

sudo tee /etc/systemd/system/kiosk.service > /dev/null <<EOF
[Unit]
Description=Chromium Kiosk
After=graphical.target network-online.target
Wants=graphical.target network-online.target

[Service]
Environment=DISPLAY=:0
Environment=XAUTHORITY=$HOME_DIR/.Xauthority
ExecStart=$HOME_DIR/kiosk.sh
Restart=always
RestartSec=5
User=$USER_NAME
Group=$USER_NAME

[Install]
WantedBy=graphical.target
EOF

# -----------------------------
# Service aktivieren
# -----------------------------
echo "Aktiviere Service..."

sudo systemctl daemon-reexec
sudo systemctl daemon-reload
sudo systemctl enable kiosk.service

echo "========================================="
echo "Installation abgeschlossen."
echo "Bitte Neustarten:"
echo "sudo reboot"
echo "========================================="