// Copyright 2024 RustFS Team
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//! test endpoint index settings

use rustfs_ecstore::disk::endpoint::Endpoint;
use rustfs_ecstore::endpoints::{EndpointServerPools, Endpoints, PoolEndpoints};
use std::net::SocketAddr;
use tempfile::TempDir;
use tokio_util::sync::CancellationToken;

#[tokio::test(flavor = "multi_thread", worker_threads = 4)]
async fn test_endpoint_index_settings() -> anyhow::Result<()> {
    let temp_dir = TempDir::new()?;

    // create test disk paths
    let disk_paths: Vec<_> = (0..4).map(|i| temp_dir.path().join(format!("disk{i}"))).collect();

    for path in &disk_paths {
        tokio::fs::create_dir_all(path).await?;
    }

    // build endpoints
    let mut endpoints: Vec<Endpoint> = disk_paths
        .iter()
        .map(|p| Endpoint::try_from(p.to_string_lossy().as_ref()).unwrap())
        .collect();

    // set endpoint indexes correctly
    for (i, endpoint) in endpoints.iter_mut().enumerate() {
        endpoint.set_pool_index(0);
        endpoint.set_set_index(0);
        endpoint.set_disk_index(i); // note: disk_index is usize type
        println!(
            "Endpoint {}: pool_idx={}, set_idx={}, disk_idx={}",
            i, endpoint.pool_idx, endpoint.set_idx, endpoint.disk_idx
        );
    }

    let pool_endpoints = PoolEndpoints {
        legacy: false,
        set_count: 1,
        drives_per_set: endpoints.len(),
        endpoints: Endpoints::from(endpoints.clone()),
        cmd_line: "test".to_string(),
        platform: format!("OS: {} | Arch: {}", std::env::consts::OS, std::env::consts::ARCH),
    };

    let endpoint_pools = EndpointServerPools(vec![pool_endpoints]);

    // validate all endpoint indexes are in valid range
    for (i, ep) in endpoints.iter().enumerate() {
        assert_eq!(ep.pool_idx, 0, "Endpoint {i} pool_idx should be 0");
        assert_eq!(ep.set_idx, 0, "Endpoint {i} set_idx should be 0");
        assert_eq!(ep.disk_idx, i as i32, "Endpoint {i} disk_idx should be {i}");
        println!(
            "Endpoint {} indices are valid: pool={}, set={}, disk={}",
            i, ep.pool_idx, ep.set_idx, ep.disk_idx
        );
    }

    // test ECStore initialization
    rustfs_ecstore::store::init_local_disks(endpoint_pools.clone()).await?;

    let server_addr: SocketAddr = "127.0.0.1:0".parse().unwrap();
    let ecstore = rustfs_ecstore::store::ECStore::new(server_addr, endpoint_pools, CancellationToken::new()).await?;

    println!("ECStore initialized successfully with {} pools", ecstore.pools.len());

    Ok(())
}