#!/bin/bash
# =============================================================
#  Full Screen Player — Instalador Raspberry Pi / Linux
#
#  Uso:
#    sudo bash install-raspberry.sh [SERVER_URL]
#
#  Ejemplos:
#    sudo bash install-raspberry.sh https://fullscreen.com.ar/api
#    sudo bash install-raspberry.sh   # interactivo
#
#  Al abrir, el player muestra un CÓDIGO DE ACTIVACIÓN en pantalla.
#  Emparejalo desde el panel en: Pantallas → + Adoptar pantalla.
#  (No necesitás cargar ningún token manualmente.)
# =============================================================

set -euo pipefail

# ─── Colores ─────────────────────────────────────────────────
RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[1;33m'
CYAN='\033[0;36m'; BOLD='\033[1m'; NC='\033[0m'
info()    { echo -e "${CYAN}[INFO]${NC}  $*"; }
ok()      { echo -e "${GREEN}[OK]${NC}    $*"; }
warn()    { echo -e "${YELLOW}[WARN]${NC}  $*"; }
err()     { echo -e "${RED}[ERROR]${NC} $*"; exit 1; }
header()  { echo -e "\n${BOLD}${CYAN}$*${NC}"; echo "──────────────────────────────────────────"; }

# ─── Root check ──────────────────────────────────────────────
[[ $EUID -ne 0 ]] && err "Ejecutá el script con sudo: sudo bash $0"

# ─── Usuario objetivo ────────────────────────────────────────
PLAYER_USER="${SUDO_USER:-pi}"
HOME_DIR=$(eval echo "~${PLAYER_USER}")
INSTALL_DIR="${HOME_DIR}/.fullscreen"

header "Full Screen Player — Instalador Raspberry Pi / Linux"

# ─── Parámetros ──────────────────────────────────────────────
SERVER_URL="${1:-https://fullscreen.com.ar/api}"

if [[ -z "$SERVER_URL" ]]; then
  read -rp "URL del servidor (ej: https://fullscreen.com.ar/api): " SERVER_URL
fi

[[ -z "$SERVER_URL" ]] && err "SERVER_URL es requerido."

SERVER_URL="${SERVER_URL%/}"
# El player muestra un código de activación y se adopta desde el panel — no necesita token.
PLAYER_URL="${SERVER_URL%/api*}/player/"

info "Usuario    : $PLAYER_USER"
info "Directorio : $INSTALL_DIR"
info "Player URL : $PLAYER_URL"

# ─── Detectar entorno ─────────────────────────────────────────
HAS_DESKTOP=false
HAS_LIGHTDM=false
IS_RPI=false

[[ -f /etc/rpi-issue || -f /boot/config.txt || "$(uname -m)" =~ ^arm ]] && IS_RPI=true
command -v lightdm     &>/dev/null && HAS_LIGHTDM=true
command -v startx      &>/dev/null && HAS_DESKTOP=true
[[ -n "${XDG_CURRENT_DESKTOP:-}" || -n "${DISPLAY:-}" ]] && HAS_DESKTOP=true

# ─── Dependencias ─────────────────────────────────────────────
header "Instalando dependencias"
apt-get update -qq

# Intentar instalar Chromium
CHROMIUM_PKG=""
for pkg in chromium-browser chromium; do
  if apt-cache show "$pkg" &>/dev/null 2>&1; then CHROMIUM_PKG="$pkg"; break; fi
done
[[ -z "$CHROMIUM_PKG" ]] && err "No se encontró chromium-browser ni chromium en los repositorios."

PKGS=("$CHROMIUM_PKG" "unclutter" "xdotool")

# Si no hay escritorio, instalar X11 mínimo
if ! $HAS_DESKTOP; then
  warn "No se detectó entorno gráfico. Se instalará X11 mínimo."
  PKGS+=("xserver-xorg-core" "xserver-xorg-input-all" "x11-xserver-utils" "xinit" "openbox")
fi

apt-get install -y --no-install-recommends "${PKGS[@]}" 2>/dev/null || \
  warn "Algunos paquetes no se pudieron instalar. Verificá manualmente."

# Detectar ejecutable de Chromium
CHROMIUM_BIN=""
for bin in chromium-browser chromium; do
  command -v "$bin" &>/dev/null && { CHROMIUM_BIN="$bin"; break; }
done
[[ -z "$CHROMIUM_BIN" ]] && err "Chromium no encontrado tras la instalación."
ok "Chromium: $CHROMIUM_BIN"

# ─── Directorio e instalación ─────────────────────────────────
header "Configurando player"
mkdir -p "$INSTALL_DIR"

# Config JSON
cat > "$INSTALL_DIR/config.json" <<EOF
{
  "server": "${SERVER_URL}",
  "player": "${PLAYER_URL}"
}
EOF

# Script xinitrc (entorno gráfico mínimo)
cat > "$INSTALL_DIR/xinitrc" <<XEOF
#!/bin/sh
# xinitrc para Full Screen Player

# Deshabilitar protector de pantalla y DPMS
xset s off
xset s noblank
xset -dpms

# Ocultar cursor
unclutter -idle 0.5 -root &

# Limpiar flag de crash de Chromium
PREFS="\$HOME/.config/chromium/Default/Preferences"
if [ -f "\$PREFS" ]; then
  sed -i 's/"exited_cleanly":false/"exited_cleanly":true/g'   "\$PREFS" 2>/dev/null || true
  sed -i 's/"exit_type":"Crashed"/"exit_type":"Normal"/g' "\$PREFS" 2>/dev/null || true
fi

# Lanzar Chromium en modo kiosk
exec ${CHROMIUM_BIN} \\
  --kiosk \\
  --noerrdialogs \\
  --disable-infobars \\
  --no-first-run \\
  --disable-translate \\
  --disable-features=TranslateUI,OverscrollHistoryNavigation \\
  --disable-pinch \\
  --autoplay-policy=no-user-gesture-required \\
  --disable-session-crashed-bubble \\
  --check-for-update-interval=604800 \\
  --disable-component-update \\
  "${PLAYER_URL}" 2>/dev/null
XEOF
chmod +x "$INSTALL_DIR/xinitrc"

# Script de inicio principal
cat > "$INSTALL_DIR/start.sh" <<STARTEOF
#!/bin/bash
# Full Screen Player — inicio

# Esperar a que el servidor X esté listo (si ya hay uno corriendo)
if [ -n "\$DISPLAY" ]; then
  exec ${CHROMIUM_BIN} --kiosk --noerrdialogs --disable-infobars --no-first-run \\
    --disable-translate --autoplay-policy=no-user-gesture-required \\
    --disable-session-crashed-bubble \\
    "${PLAYER_URL}" 2>/dev/null
else
  exec xinit "${INSTALL_DIR}/xinitrc" -- :0 vt\$(fgconsole 2>/dev/null || echo 1)
fi
STARTEOF
chmod +x "$INSTALL_DIR/start.sh"
chown -R "${PLAYER_USER}:${PLAYER_USER}" "$INSTALL_DIR"
ok "Scripts creados en $INSTALL_DIR"

# ─── Autostart según entorno ──────────────────────────────────
header "Configurando inicio automático"

if $HAS_LIGHTDM || $HAS_DESKTOP; then
  # ── Con escritorio: XDG autostart ──────────────────────────
  mkdir -p /etc/xdg/autostart
  cat > /etc/xdg/autostart/fullscreen-player.desktop <<EOF
[Desktop Entry]
Type=Application
Name=Full Screen Player
Comment=Carteleria digital
Exec=bash ${INSTALL_DIR}/start.sh
X-GNOME-Autostart-enabled=true
X-GNOME-Autostart-Delay=3
Hidden=false
NoDisplay=false
EOF
  ok "Autostart XDG: /etc/xdg/autostart/fullscreen-player.desktop"

  # Auto-login con LightDM
  if $HAS_LIGHTDM; then
    read -rp "¿Configurar auto-login para '$PLAYER_USER'? [S/n]: " ANS
    if [[ "${ANS,,}" != "n" ]]; then
      LIGHTDM_CONF="/etc/lightdm/lightdm.conf"
      if [[ -f "$LIGHTDM_CONF" ]]; then
        # Actualizar o agregar autologin-user dentro de [Seat:*]
        if grep -q "^\[Seat:\*\]" "$LIGHTDM_CONF"; then
          sed -i "/^\[Seat:\*\]/,/^\[/ { s/^#*autologin-user=.*/autologin-user=${PLAYER_USER}/; }" "$LIGHTDM_CONF"
          grep -q "^autologin-user=" "$LIGHTDM_CONF" || \
            sed -i "/^\[Seat:\*\]/a autologin-user=${PLAYER_USER}" "$LIGHTDM_CONF"
        else
          echo -e "\n[Seat:*]\nautologin-user=${PLAYER_USER}" >> "$LIGHTDM_CONF"
        fi
        ok "Auto-login LightDM configurado para $PLAYER_USER"
      elif command -v raspi-config &>/dev/null; then
        raspi-config nonint do_boot_behaviour B4 2>/dev/null && \
          ok "Auto-login configurado via raspi-config" || \
          warn "No se pudo configurar auto-login. Hacélo en: raspi-config → System Options → Boot / Auto Login → Desktop Autologin"
      else
        warn "No se encontró lightdm.conf. Configurá el auto-login manualmente."
      fi
    fi
  fi

else
  # ── Sin escritorio (headless): startx via .bash_profile ────
  info "Configurando modo headless con startx automático…"

  # Auto-login en TTY1 via systemd getty override
  AUTOLOGIN_DIR="/etc/systemd/system/getty@tty1.service.d"
  mkdir -p "$AUTOLOGIN_DIR"
  cat > "$AUTOLOGIN_DIR/autologin.conf" <<EOF
[Service]
ExecStart=
ExecStart=-/sbin/agetty --autologin ${PLAYER_USER} --noclear %I \$TERM
EOF
  systemctl daemon-reload
  ok "Auto-login TTY1 configurado para $PLAYER_USER"

  # Agregar startx a .bash_profile (solo si no existe ya)
  PROFILE="${HOME_DIR}/.bash_profile"
  PROFILE_LINE='[[ -z $DISPLAY && ${XDG_VTNR:-0} -eq 1 ]] && exec xinit '"${INSTALL_DIR}/xinitrc"' -- :0 vt1'
  if ! grep -qF "fullscreen" "$PROFILE" 2>/dev/null; then
    echo "" >> "$PROFILE"
    echo "# Full Screen Player — inicio automático" >> "$PROFILE"
    echo "$PROFILE_LINE" >> "$PROFILE"
    chown "${PLAYER_USER}:${PLAYER_USER}" "$PROFILE"
    ok ".bash_profile configurado en $PROFILE"
  else
    warn ".bash_profile ya tiene configuración de fullscreen — no se modificó."
  fi
fi

# ─── Resumen final ────────────────────────────────────────────
echo ""
echo -e "${GREEN}╔═══════════════════════════════════════════════╗${NC}"
echo -e "${GREEN}║   Instalación completada correctamente         ║${NC}"
echo -e "${GREEN}╚═══════════════════════════════════════════════╝${NC}"
echo ""
echo -e "  Servidor : ${CYAN}${SERVER_URL}${NC}"
echo -e "  Player   : ${CYAN}${PLAYER_URL}${NC}"
echo -e "  Scripts  : ${CYAN}${INSTALL_DIR}/${NC}"
echo ""
echo -e "  ${BOLD}El player mostrará un código de activación en pantalla.${NC}"
echo -e "  Emparejalo desde el panel: ${CYAN}Pantallas → + Adoptar pantalla${NC}"
echo ""
if $HAS_DESKTOP || $HAS_LIGHTDM; then
  echo -e "  ${YELLOW}Reiniciá el sistema para que el player inicie automáticamente.${NC}"
else
  echo -e "  ${YELLOW}Reiniciá el sistema — el TTY1 iniciará sesión automáticamente y lanzará el player.${NC}"
fi
echo -e "  Para probar ahora: ${CYAN}sudo -u ${PLAYER_USER} bash ${INSTALL_DIR}/start.sh${NC}"
echo ""