//! LightningStor CSI Driver for k8shost
//!
//! This binary implements the Container Storage Interface (CSI) specification
//! to integrate k8shost persistent volumes with LightningStor's distributed
//! block storage system.
//!
//! CSI services:
//! - Identity Service: Plugin info and capabilities
//! - Controller Service: Volume lifecycle (create, delete, attach, detach)
//! - Node Service: Volume staging and publishing on nodes

use anyhow::Result;
use tracing::info;

#[tokio::main]
async fn main() -> Result<()> {
    tracing_subscriber::fmt::init();

    let addr = "0.0.0.0:50051";

    info!("LightningStor CSI driver starting on {}", addr);

    // TODO: Implement CSI gRPC services
    // 1. IdentityService - GetPluginInfo, GetPluginCapabilities, Probe
    // 2. ControllerService - CreateVolume, DeleteVolume, ControllerPublishVolume, ControllerUnpublishVolume
    // 3. NodeService - NodeStageVolume, NodeUnstageVolume, NodePublishVolume, NodeUnpublishVolume

    // Placeholder server that will be replaced with actual CSI implementation
    info!("CSI driver not yet implemented - exiting");

    Ok(())
}

// Placeholder types for future CSI implementation
#[allow(dead_code)]
mod csi {
    /// Identity service provides plugin metadata and capabilities
    pub struct IdentityService;

    /// Controller service manages volume lifecycle
    pub struct ControllerService;

    /// Node service manages volume mounting on nodes
    pub struct NodeService;
}
