#!/bin/bash
# Скрипт настройки CAN интерфейсов на Raspberry Pi 5 с 2CH CAN HAT

set -e

BITRATE=${1:-500000}

echo "=== CAN Interface Setup ==="
echo "Bitrate: $BITRATE bps"
echo ""

# Проверка прав
if [ "$EUID" -ne 0 ]; then
    echo "Please run as root (sudo)"
    exit 1
fi

# Загрузка модулей
echo "[1/4] Loading kernel modules..."
modprobe can
modprobe can_raw
modprobe mcp251x 2>/dev/null || true  # Для SPI CAN контроллеров

# Настройка can0
echo "[2/4] Configuring can0..."
if ip link show can0 &>/dev/null; then
    ip link set can0 down 2>/dev/null || true
    ip link set can0 type can bitrate $BITRATE
    ip link set can0 up
    echo "  can0: UP at $BITRATE bps"
else
    echo "  can0: Not found (skipping)"
fi

# Настройка can1
echo "[3/4] Configuring can1..."
if ip link show can1 &>/dev/null; then
    ip link set can1 down 2>/dev/null || true
    ip link set can1 type can bitrate $BITRATE
    ip link set can1 up
    echo "  can1: UP at $BITRATE bps"
else
    echo "  can1: Not found (skipping)"
fi

# Создание vcan0 для тестирования
echo "[4/4] Creating virtual CAN (vcan0)..."
modprobe vcan
if ! ip link show vcan0 &>/dev/null; then
    ip link add dev vcan0 type vcan
fi
ip link set vcan0 up
echo "  vcan0: UP (virtual)"

echo ""
echo "=== Status ==="
ip -details link show type can 2>/dev/null || echo "No physical CAN interfaces"
ip -details link show type vcan 2>/dev/null || echo "No virtual CAN interfaces"

echo ""
echo "=== Done ==="
echo "You can now run: python src/main.py -i can1 -s city"