// SPDX-FileCopyrightText: Copyright (c) 2025-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
// SPDX-License-Identifier: Apache-2.0

use clap::Parser;

use dynamo_kv_router::standalone_indexer::{self, IndexerConfig};

#[derive(Parser)]
#[command(name = "dynamo-kv-indexer", about = "Standalone KV cache indexer")]
struct Cli {
    /// KV cache block size for initial workers registered via --workers
    #[arg(long)]
    block_size: Option<u32>,

    /// HTTP server port
    #[arg(long, default_value_t = 8090)]
    port: u16,

    /// Number of indexer threads (1 = single-threaded KvIndexer, >1 = ThreadPoolIndexer)
    #[arg(long, default_value_t = 4)]
    threads: usize,

    /// Initial workers as "worker_id[:dp_rank]=zmq_address,..." (e.g. "1=tcp://host:5557,1:1=tcp://host:5558")
    #[arg(long)]
    workers: Option<String>,

    /// Model name for initial workers registered via --workers
    #[arg(long, default_value = "default")]
    model_name: String,

    /// Tenant ID for initial workers registered via --workers
    #[arg(long, default_value = "default")]
    tenant_id: String,

    /// Comma-separated peer URLs for P2P recovery (e.g. "http://host1:8090,http://host2:8091")
    #[arg(long)]
    peers: Option<String>,
}

#[tokio::main]
async fn main() -> anyhow::Result<()> {
    tracing_subscriber::fmt()
        .with_env_filter(
            tracing_subscriber::EnvFilter::try_from_default_env()
                .unwrap_or_else(|_| tracing_subscriber::EnvFilter::new("info")),
        )
        .init();

    let cli = Cli::parse();

    standalone_indexer::run_server(IndexerConfig {
        block_size: cli.block_size,
        port: cli.port,
        threads: cli.threads,
        workers: cli.workers,
        model_name: cli.model_name,
        tenant_id: cli.tenant_id,
        peers: cli.peers,
    })
    .await
}