#!/bin/bash

# vLLM R9700 Container 构建和部署脚本
# 用于一键构建镜像并部署运行

set -e

# 配置变量
IMAGE_NAME="custom-vllm-r9700"
IMAGE_TAG="latest"
CONTAINER_NAME="custom-vllm-r9700"
MODEL_DIR="${MODEL_DIR:-/opt/models}"
CONFIG_FILE="${CONFIG_FILE:-/opt/model_config.yaml}"
LOCAL_MODEL_DIR="${LOCAL_MODEL_DIR:-/models}"

# 颜色定义
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# 打印带颜色的消息
print_info() {
    echo -e "${BLUE}[INFO]${NC} $1"
}

print_success() {
    echo -e "${GREEN}[SUCCESS]${NC} $1"
}

print_warning() {
    echo -e "${YELLOW}[WARNING]${NC} $1"
}

print_error() {
    echo -e "${RED}[ERROR]${NC} $1"
}

# 显示使用帮助
show_usage() {
    echo "用法：$0 [选项]"
    echo ""
    echo "选项:"
    echo "  -b, --build-only      仅构建镜像，不运行容器"
    echo "  -r, --rebuild         重新构建镜像（不使用缓存）"
    echo "  -s, --stop            仅停止并删除容器"
    echo "  -d, --detach          后台运行容器（默认）"
    echo "  -i, --interactive     交互式运行容器"
    echo "  -c, --config FILE     指定配置文件路径"
    echo "  -m, --models DIR      指定模型目录路径"
    echo "  -p, --port PORT       指定服务端口"
    echo "  -h, --help            显示此帮助信息"
    echo ""
    echo "示例:"
    echo "  $0                           # 构建并运行"
    echo "  $0 -b                        # 仅构建镜像"
    echo "  $0 -r                        # 重新构建并运行"
    echo "  $0 -s                        # 停止并删除容器"
    echo "  $0 -p 8080                   # 使用端口 8080 运行"
    echo "  $0 -c /path/to/config.yaml   # 使用指定配置文件"
    echo "  $0 -m /path/to/models        # 使用指定模型目录"
    exit 0
}

# 解析命令行参数
BUILD_ONLY=false
REBUILD=false
STOP_ONLY=false
DETACH=true
CUSTOM_CONFIG=""
CUSTOM_MODELS=""
CUSTOM_PORT=""

while [[ $# -gt 0 ]]; do
    case $1 in
        -b|--build-only)
            BUILD_ONLY=true
            shift
            ;;
        -r|--rebuild)
            REBUILD=true
            shift
            ;;
        -s|--stop)
            STOP_ONLY=true
            shift
            ;;
        -d|--detach)
            DETACH=true
            shift
            ;;
        -i|--interactive)
            DETACH=false
            shift
            ;;
        -c|--config)
            CUSTOM_CONFIG="$2"
            shift 2
            ;;
        -m|--models)
            CUSTOM_MODELS="$2"
            shift 2
            ;;
        -p|--port)
            CUSTOM_PORT="$2"
            shift 2
            ;;
        -h|--help)
            show_usage
            ;;
        *)
            print_error "未知选项：$1"
            show_usage
            ;;
    esac
done

# 停止并删除容器
stop_container() {
    print_info "停止并删除容器..."
    
    if docker ps -a --format '{{.Names}}' | grep -q "^${CONTAINER_NAME}$"; then
        docker stop "${CONTAINER_NAME}" 2>/dev/null || true
        print_success "容器已停止"
        
        docker rm "${CONTAINER_NAME}" 2>/dev/null || true
        print_success "容器已删除"
    else
        print_warning "容器不存在"
    fi
}

# 如果只需要停止容器，直接退出
if [ "$STOP_ONLY" = true ]; then
    stop_container
    exit 0
fi

# 检查 Docker 是否运行
check_docker() {
    if ! docker info > /dev/null 2>&1; then
        print_error "Docker 未运行或无权限访问"
        print_error "请确保 Docker 服务正在运行，并且当前用户有 Docker 访问权限"
        exit 1
    fi
    print_success "Docker 检查通过"
}

# 构建镜像
build_image() {
    print_info "开始构建 Docker 镜像..."
    print_info "镜像名称：${IMAGE_NAME}:${IMAGE_TAG}"
    
    BUILD_ARGS="--no-cache"
    if [ "$REBUILD" = false ]; then
        BUILD_ARGS=""
    fi
    
    if docker build ${BUILD_ARGS} -t "${IMAGE_NAME}:${IMAGE_TAG}" .; then
        print_success "镜像构建成功"
        docker images "${IMAGE_NAME}:${IMAGE_TAG}" --format "table {{.Repository}}\t{{.Tag}}\t{{.Size}}\t{{.CreatedAt}}"
    else
        print_error "镜像构建失败"
        exit 1
    fi
}

# 运行容器
run_container() {
    print_info "开始部署容器..."
    
    # 设置卷挂载参数
    VOLUME_ARGS=""
    
    # 模型目录
    if [ -n "$CUSTOM_MODELS" ]; then
        MODEL_DIR="$CUSTOM_MODELS"
    fi
    
    if [ -d "$MODEL_DIR" ]; then
        VOLUME_ARGS="$VOLUME_ARGS -v ${MODEL_DIR}:${LOCAL_MODEL_DIR}"
        print_info "模型目录：${MODEL_DIR} -> ${LOCAL_MODEL_DIR}"
    else
        print_warning "模型目录不存在：${MODEL_DIR}"
        print_info "创建模型目录..."
        mkdir -p "$MODEL_DIR"
        VOLUME_ARGS="$VOLUME_ARGS -v ${MODEL_DIR}:${LOCAL_MODEL_DIR}"
    fi
    
    # 配置文件
    if [ -n "$CUSTOM_CONFIG" ]; then
        CONFIG_FILE="$CUSTOM_CONFIG"
    fi
    
    if [ -f "$CONFIG_FILE" ]; then
        VOLUME_ARGS="$VOLUME_ARGS -v ${CONFIG_FILE}:/etc/vllm/model_config.yaml"
        print_info "配置文件：${CONFIG_FILE}"
    else
        print_warning "配置文件不存在：${CONFIG_FILE}"
        print_info "将使用容器内默认配置"
    fi
    
    # 端口设置
    PORT_ARG="-p 8000:8000"
    if [ -n "$CUSTOM_PORT" ]; then
        PORT_ARG="-p ${CUSTOM_PORT}:8000"
    fi
    
    # 运行模式
    RUN_MODE="-d"
    if [ "$DETACH" = false ]; then
        RUN_MODE="-it"
    fi
    
    # 构建运行命令
    print_info "启动容器..."
    
    docker run ${RUN_MODE} \
        --name "${CONTAINER_NAME}" \
        --device /dev/dri \
        --device /dev/kfd \
        --group-add video \
        --group-add render \
        --security-opt seccomp=unconfined \
        ${VOLUME_ARGS} \
        ${PORT_ARG} \
        -e LOCAL_MODEL_DIR="${LOCAL_MODEL_DIR}" \
        "${IMAGE_NAME}:${IMAGE_TAG}"
    
    if [ $? -eq 0 ]; then
        print_success "容器启动成功"
        
        if [ "$DETACH" = true ]; then
            echo ""
            print_info "容器信息:"
            echo "  容器名称：${CONTAINER_NAME}"
            echo "  镜像：${IMAGE_NAME}:${IMAGE_TAG}"
            echo "  状态：运行中"
            echo "  API 地址：http://localhost:8000"
            echo ""
            print_info "常用命令:"
            echo "  查看日志：docker logs -f ${CONTAINER_NAME}"
            echo "  停止容器：docker stop ${CONTAINER_NAME}"
            echo "  启动容器：docker start ${CONTAINER_NAME}"
            echo "  删除容器：docker rm -f ${CONTAINER_NAME}"
            echo "  进入容器：docker exec -it ${CONTAINER_NAME} /bin/bash"
        fi
    else
        print_error "容器启动失败"
        exit 1
    fi
}

# 主流程
main() {
    echo "=========================================="
    echo "vLLM R9700 Container 构建和部署"
    echo "=========================================="
    echo "开始时间：$(date '+%Y-%m-%d %H:%M:%S')"
    echo ""
    
    # 检查 Docker
    check_docker
    
    # 停止旧容器
    stop_container
    
    # 构建镜像
    build_image
    
    # 如果仅构建，退出
    if [ "$BUILD_ONLY" = true ]; then
        print_success "镜像构建完成"
        print_info "运行以下命令启动容器:"
        echo "  $0"
        exit 0
    fi
    
    # 运行容器
    run_container
    
    echo ""
    echo "=========================================="
    print_success "部署完成"
    echo "=========================================="
    echo "完成时间：$(date '+%Y-%m-%d %H:%M:%S')"
}

# 执行主流程
main