#!/data/data/com.termux/files/usr/bin/bash
# Instalador de Samba + mDNS para Termux
# Uso: bash install.sh
set -e

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'

SAMBA_DIR="$HOME/.config/samba"
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"

info()  { echo -e "${GREEN}[+]${NC} $1"; }
warn()  { echo -e "${YELLOW}[!]${NC} $1"; }
error() { echo -e "${RED}[x]${NC} $1"; exit 1; }

# 1. Verificar Termux
[ -n "$PREFIX" ] || error "No es Termux. Este script solo funciona en Termux."

# 2. Instalar dependencias
info "Instalando paquetes..."
pkg install -y samba python 2>/dev/null
pip install -q zeroconf 2>/dev/null

# 3. Crear directorios
info "Creando directorios..."
mkdir -p "$SAMBA_DIR"/{private,lock,state,cache}
chmod 0755 "$SAMBA_DIR"/{lock,state,cache}

# 4. Copiar config
info "Copiando smb.conf..."
cp "$SCRIPT_DIR/smb.conf" "$SAMBA_DIR/smb.conf"

# 5. Copiar script mDNS
info "Instalando mdns-publish.py..."
mkdir -p "$HOME/.local/bin"
cp "$SCRIPT_DIR/mdns-publish.py" "$HOME/.local/bin/mdns-publish.py"
chmod +x "$HOME/.local/bin/mdns-publish.py"

# 6. Crear usuario Samba
info "Configurando usuario Samba..."
read -p "Usuario Samba [andres]: " SMB_USER
SMB_USER="${SMB_USER:-andres}"
read -s -p "Contrasena Samba: " SMB_PASS
echo ""
printf '%s\n%s\n' "$SMB_PASS" "$SMB_PASS" | \
  smbpasswd -L -s -c "$SAMBA_DIR/smb.conf" -a "$SMB_USER" 2>/dev/null || \
  printf '%s\n%s\n' "$SMB_PASS" "$SMB_PASS" | \
  smbpasswd -L -s -c "$SAMBA_DIR/smb.conf" "$SMB_USER"

# 7. Verificar storage
if [ ! -d "/storage/emulated/0" ]; then
    warn "Storage no accesible. Ejecuta: termux-setup-storage"
fi

# 8. Agregar a .bashrc si no existe
if ! grep -q "smbd" "$HOME/.bashrc" 2>/dev/null; then
    info "Agregando autostart a .bashrc..."
    cat "$SCRIPT_DIR/bashrc-snippet.sh" >> "$HOME/.bashrc"
else
    warn "Autostart ya existe en .bashrc, no se modifica"
fi

# 9. Iniciar servicios
info "Iniciando Samba..."
pkill smbd 2>/dev/null || true
sleep 1
smbd -D -s "$SAMBA_DIR/smb.conf"

info "Iniciando mDNS..."
pkill -f mdns-publish.py 2>/dev/null || true
sleep 1
nohup python "$HOME/.local/bin/mdns-publish.py" > /dev/null 2>&1 &
disown

# 10. Verificar
sleep 2
if pgrep -x smbd > /dev/null && pgrep -f mdns-publish > /dev/null; then
    info "Todo corriendo."
    echo ""
    echo "  Nombre en red: movil"
    echo "  Puerto: 4450"
    echo "  Usuario: $SMB_USER"
    echo ""
    echo "  Desde Linux:   smb://movil.local:4450/"
    echo "  Desde Windows: \\\\IP:4450\\"
    echo ""
else
    error "Algo fallo. Revisa: smb-status / mdns-status"
fi