// 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.

use super::*;
use crate::bucket::utils::has_bad_path_component;
use crate::disk::error::{DiskError, Result as DiskResult};
use crate::disk::{DeleteOptions, Disk, RenameDataGuards, RenameDataResp};
use crate::runtime::instance::{InstanceContext, NamespaceCommitGuard};
use crate::runtime::sources as runtime_sources;
use tracing::{debug, error};

const LOG_COMPONENT_ECSTORE: &str = "ecstore";
const LOG_SUBSYSTEM_DISK_STARTUP: &str = "disk_startup";
const EVENT_LOCAL_DISK_ID_PREWARM_SKIPPED: &str = "local_disk_id_prewarm_skipped";
const EVENT_LOCK_CLIENT_INITIALIZATION_FAILED: &str = "lock_client_initialization_failed";

/// An instance-bound capability for internal writes before ECStore/IAM startup.
/// Its private context and volume checks cannot be replaced by a caller guard.
#[derive(Clone)]
pub struct BootstrapLocalTarget {
    ctx: Arc<InstanceContext>,
}

impl BootstrapLocalTarget {
    pub fn new(ctx: Arc<InstanceContext>) -> Self {
        Self { ctx }
    }

    pub fn is_for_store(&self, store: &ECStore) -> bool {
        Arc::ptr_eq(&self.ctx, &store.ctx)
    }

    pub async fn rename_local_data(
        &self,
        disk_ref: &str,
        source: (&str, &str),
        fi: &FileInfo,
        destination: (&str, &str),
        scanner_token: Option<Uuid>,
    ) -> DiskResult<RenameDataResp> {
        if scanner_token.is_some() {
            return Err(DiskError::other("bootstrap rename cannot use a scanner publication lease"));
        }
        validate_bootstrap_volume(source.0)?;
        validate_bootstrap_volume(destination.0)?;
        rename_local_data_with_ctx(&self.ctx, disk_ref, source, fi, destination, RenameDataGuards::default()).await
    }

    pub async fn undo_local_write(
        &self,
        disk_ref: &str,
        volume: &str,
        path: &str,
        fi: FileInfo,
        opts: DeleteOptions,
    ) -> DiskResult<()> {
        validate_bootstrap_volume(volume)?;
        undo_local_write_with_ctx(&self.ctx, disk_ref, volume, path, fi, opts).await
    }
}

fn validate_bootstrap_volume(volume: &str) -> DiskResult<()> {
    // Prefix membership alone permits aliases such as .rustfs.sys/../bucket.
    // Validate both raw rename volumes before any disk lookup or admission.
    if has_bad_path_component(volume) || !is_meta_bucketname(volume) {
        return Err(DiskError::FileAccessDenied);
    }
    Ok(())
}

impl ECStore {
    /// Execute on this instance's active local disk through the physical owner.
    pub async fn rename_local_data(
        &self,
        disk_ref: &str,
        source: (&str, &str),
        fi: &FileInfo,
        destination: (&str, &str),
        scanner_token: Option<Uuid>,
    ) -> DiskResult<RenameDataResp> {
        let external_guard: Option<Arc<dyn Send + Sync>> = if let Some(token) = scanner_token {
            Some(Arc::new(
                self.acquire_scanner_publication_lease_guard(token)
                    .await
                    .map_err(|err| DiskError::other(err.to_string()))?,
            ))
        } else {
            None
        };
        rename_local_data_with_ctx(
            &self.ctx,
            disk_ref,
            source,
            fi,
            destination,
            RenameDataGuards {
                scanner_publication_lease_token: scanner_token,
                external_guard,
                namespace_owner: None,
            },
        )
        .await
    }

    pub async fn undo_local_write(
        &self,
        disk_ref: &str,
        volume: &str,
        path: &str,
        fi: FileInfo,
        opts: DeleteOptions,
    ) -> DiskResult<()> {
        undo_local_write_with_ctx(&self.ctx, disk_ref, volume, path, fi, opts).await
    }
}

// The optional ID is a cold lookup to cache only after final admission.
async fn local_disk_candidate(ctx: &Arc<InstanceContext>, disk_ref: &str) -> DiskResult<(DiskStore, Option<Uuid>)> {
    let map = ctx.local_disk_map();
    if let Some(disk) = map.read().await.get(disk_ref).and_then(Option::as_ref).cloned() {
        return Ok((disk, None));
    }
    let disk_id = Uuid::parse_str(disk_ref).map_err(|_| DiskError::DiskNotFound)?;
    let cached_path = ctx.local_disk_id_map().read().await.get(&disk_id).cloned();
    if let Some(path) = cached_path {
        let cached_disk = map.read().await.get(&path).and_then(Option::as_ref).cloned();
        if let Some(disk) = cached_disk
            && matches!(disk.as_ref(), Disk::Local(_))
            && disk.get_disk_id().await? == Some(disk_id)
        {
            return Ok((disk, None));
        }
    }
    let disks: Vec<_> = map.read().await.values().filter_map(Clone::clone).collect();
    // Disk identity may perform format I/O. No registry guard spans this await.
    for disk in disks {
        if matches!(disk.as_ref(), Disk::Local(_)) && disk.get_disk_id().await.ok().flatten() == Some(disk_id) {
            return Ok((disk, Some(disk_id)));
        }
    }
    Err(DiskError::DiskNotFound)
}

async fn admit_local_disk(
    ctx: &Arc<InstanceContext>,
    disk: &DiskStore,
    disk_id: Option<Uuid>,
    volume: &str,
) -> DiskResult<Option<Arc<NamespaceCommitGuard>>> {
    if !matches!(disk.as_ref(), Disk::Local(_)) {
        return Err(DiskError::DiskNotFound);
    }
    let map = ctx.local_disk_map();
    let active = map.read().await;
    if !active
        .get(&disk.endpoint().to_string())
        .and_then(Option::as_ref)
        .is_some_and(|current| Arc::ptr_eq(current, disk))
    {
        return Err(DiskError::DiskNotFound);
    }
    // Preserve registry -> ID-cache lock order; no filesystem I/O under either.
    if let Some(disk_id) = disk_id {
        ctx.local_disk_id_map()
            .write()
            .await
            .insert(disk_id, disk.endpoint().to_string());
    }
    // Admission linearizes under the registry read: replacement/quarantine
    // before this point rejects; later changes do not revoke physical I/O.
    Ok((!is_meta_bucketname(volume)).then(|| ctx.begin_namespace_commit()))
}

async fn rename_local_data_with_ctx(
    ctx: &Arc<InstanceContext>,
    disk_ref: &str,
    source: (&str, &str),
    fi: &FileInfo,
    destination: (&str, &str),
    mut guards: RenameDataGuards,
) -> DiskResult<RenameDataResp> {
    let (disk, disk_id) = local_disk_candidate(ctx, disk_ref).await?;
    let owner = admit_local_disk(ctx, &disk, disk_id, destination.0).await?;
    guards.namespace_owner = owner.as_ref().map(|owner| owner.clone() as Arc<dyn Send + Sync>);
    let result = disk
        .rename_data_borrowed_with_fence_observed(source.0, source.1, fi, destination.0, destination.1, guards)
        .await
        .result;
    drop(owner);
    result
}

async fn undo_local_write_with_ctx(
    ctx: &Arc<InstanceContext>,
    disk_ref: &str,
    volume: &str,
    path: &str,
    fi: FileInfo,
    opts: DeleteOptions,
) -> DiskResult<()> {
    if !opts.undo_write {
        return Err(DiskError::other("target undo requires undo_write"));
    }
    let (disk, disk_id) = local_disk_candidate(ctx, disk_ref).await?;
    let owner = admit_local_disk(ctx, &disk, disk_id, volume).await?;
    let physical_owner = owner.as_ref().map(|owner| owner.clone() as Arc<dyn Send + Sync>);
    let result = disk
        .undo_write_with_namespace_owner(volume, path, fi, opts, physical_owner)
        .await;
    drop(owner);
    result
}

async fn remember_local_disk_id(disk: &DiskStore) -> Option<Uuid> {
    remember_local_disk_id_with_instance_ctx(&crate::runtime::global::current_ctx(), disk).await
}

async fn remember_local_disk_id_with_instance_ctx(instance_ctx: &Arc<InstanceContext>, disk: &DiskStore) -> Option<Uuid> {
    let disk_id = disk.get_disk_id().await.ok().flatten()?;
    record_local_disk_id_if_active(instance_ctx, disk, disk_id)
        .await
        .then_some(disk_id)
}

async fn record_local_disk_id_if_active(instance_ctx: &Arc<InstanceContext>, disk: &DiskStore, disk_id: Uuid) -> bool {
    let endpoint = disk.endpoint().to_string();
    let local_disk_map = instance_ctx.local_disk_map();
    let local_disks = local_disk_map.read().await;
    let Some(active_disk) = local_disks.get(&endpoint).and_then(Option::as_ref) else {
        return false;
    };
    if !Arc::ptr_eq(active_disk, disk) {
        return false;
    }

    // Lock order is local_disk_map -> local_disk_id_map so quarantine is the
    // linearization point for rejecting an in-flight stale disk snapshot.
    instance_ctx.local_disk_id_map().write().await.insert(disk_id, endpoint);
    true
}

pub async fn find_local_disk(disk_path: &str) -> Option<DiskStore> {
    runtime_sources::local_disk_by_path(disk_path).await
}

pub async fn find_local_disk_by_ref(disk_ref: &str) -> Option<DiskStore> {
    if let Some(disk) = find_local_disk(disk_ref).await {
        let _ = remember_local_disk_id(&disk).await;
        return Some(disk);
    }

    let Ok(disk_id) = Uuid::parse_str(disk_ref) else {
        return None;
    };

    if let Some(disk_path) = runtime_sources::local_disk_path_by_id(&disk_id).await
        && let Some(disk) = find_local_disk(&disk_path).await
    {
        return Some(disk);
    }

    for disk in all_local_disk().await {
        if remember_local_disk_id(&disk).await == Some(disk_id) {
            return Some(disk);
        }
    }

    None
}

pub async fn all_local_disk_path() -> Vec<String> {
    runtime_sources::local_disk_paths().await
}

pub async fn all_local_disk() -> Vec<DiskStore> {
    runtime_sources::local_disks().await
}

pub async fn prewarm_local_disk_id_map() {
    prewarm_local_disk_id_map_with_instance_ctx(&crate::runtime::global::current_ctx()).await
}

/// Prewarm the disk-id map of an explicit instance context (Phase 5 follow-up,
/// backlog#1052): startup passes the context whose disk map it just populated
/// instead of resolving the process-level default.
pub async fn prewarm_local_disk_id_map_with_instance_ctx(instance_ctx: &Arc<InstanceContext>) {
    let disks: Vec<DiskStore> = instance_ctx
        .local_disk_map()
        .read()
        .await
        .values()
        .filter_map(|v| v.as_ref().cloned())
        .collect();
    for disk in disks {
        if let Err(err) = disk.get_disk_id().await {
            debug!(
                event = EVENT_LOCAL_DISK_ID_PREWARM_SKIPPED,
                component = LOG_COMPONENT_ECSTORE,
                subsystem = LOG_SUBSYSTEM_DISK_STARTUP,
                disk_endpoint = %disk.endpoint(),
                error = %err,
                "Skipped local disk id prewarm"
            );
            continue;
        }

        let _ = remember_local_disk_id_with_instance_ctx(instance_ctx, &disk).await;
    }
}

pub async fn init_local_disks(endpoint_pools: EndpointServerPools) -> Result<()> {
    init_local_disks_with_instance_ctx(&crate::runtime::global::current_ctx(), endpoint_pools).await
}

/// Register the pools' local disks into an explicit instance context (Phase 5
/// follow-up, backlog#1052). The legacy [`init_local_disks`] entry resolves the
/// process-level default context; startup paths that own a context pass it here
/// so a future second instance's disks cannot leak into the first one's registry.
pub async fn init_local_disks_with_instance_ctx(
    instance_ctx: &Arc<InstanceContext>,
    endpoint_pools: EndpointServerPools,
) -> Result<()> {
    let opt = &DiskOption {
        cleanup: true,
        health_check: true,
    };

    runtime_sources::initialize_local_disk_maps(instance_ctx, endpoint_pools, opt).await
}

pub fn init_lock_clients(endpoint_pools: EndpointServerPools) {
    let mut unique_endpoints: HashMap<String, &Endpoint> = HashMap::new();

    for pool_eps in endpoint_pools.as_ref().iter() {
        for ep in pool_eps.endpoints.as_ref().iter() {
            unique_endpoints.insert(ep.host_port(), ep);
        }
    }

    let mut clients = HashMap::new();
    let mut first_local_client_set = false;

    for (key, endpoint) in unique_endpoints {
        if endpoint.is_local {
            let local_client = Arc::new(LocalClient::new()) as Arc<dyn LockClient>;

            // Store the first LocalClient globally for use by other modules
            if !first_local_client_set {
                if let Err(e) = runtime_sources::set_primary_lock_client(local_client.clone()) {
                    // If already set, ignore the error (another thread may have set it)
                    debug!(
                        event = EVENT_LOCK_CLIENT_INITIALIZATION_FAILED,
                        component = LOG_COMPONENT_ECSTORE,
                        subsystem = LOG_SUBSYSTEM_DISK_STARTUP,
                        error = ?e,
                        reason = "global_lock_client_already_set",
                        "Skipped global lock client publication"
                    );
                } else {
                    first_local_client_set = true;
                }
            }

            clients.insert(key, local_client);
        } else {
            clients.insert(key, Arc::new(RemoteClient::new(endpoint.url.to_string())) as Arc<dyn LockClient>);
        }
    }

    // Store the lock clients map globally
    if runtime_sources::set_lock_clients(clients).is_err() {
        error!(
            event = EVENT_LOCK_CLIENT_INITIALIZATION_FAILED,
            component = LOG_COMPONENT_ECSTORE,
            subsystem = LOG_SUBSYSTEM_DISK_STARTUP,
            reason = "set_global_lock_clients_failed",
            "Failed to initialize lock clients"
        );
    }
}

fn endpoint_rpc_authority(endpoint: &Endpoint) -> Option<String> {
    let host = endpoint.url.host_str()?;
    let host = if host.contains(':') && !host.starts_with('[') {
        format!("[{host}]")
    } else {
        host.to_string()
    };
    Some(match endpoint.url.port() {
        Some(port) => format!("{host}:{port}"),
        None => host,
    })
}

pub(super) async fn init_local_peer(endpoint_pools: &EndpointServerPools, host: &String, port: &String) {
    let mut peer_set = Vec::new();
    endpoint_pools.as_ref().iter().for_each(|endpoints| {
        endpoints.endpoints.as_ref().iter().for_each(|endpoint| {
            if endpoint.get_type() == EndpointType::Url
                && endpoint.is_local
                && let Some(authority) = endpoint_rpc_authority(endpoint)
            {
                peer_set.push(authority);
            }
        });
    });

    if peer_set.is_empty() {
        if !host.is_empty() {
            runtime_sources::set_local_node_name(format!("{host}:{port}")).await;
            return;
        }

        runtime_sources::set_local_node_name(format!("127.0.0.1:{port}")).await;
        return;
    }

    runtime_sources::set_local_node_name(peer_set[0].clone()).await;
}

pub async fn get_disk_infos(disks: &[Option<DiskStore>]) -> Vec<Option<DiskInfo>> {
    let opts = &DiskInfoOptions::default();
    let mut res = vec![None; disks.len()];
    for (idx, disk_op) in disks.iter().enumerate() {
        if let Some(disk) = disk_op
            && let Ok(info) = disk.disk_info(opts).await
        {
            res[idx] = Some(info);
        }
    }

    res
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::disk::new_disk;
    use crate::layout::endpoints::{Endpoints, PoolEndpoints};

    fn single_local_disk_pools(dir: &std::path::Path) -> EndpointServerPools {
        let mut endpoint = Endpoint::try_from(dir.to_str().expect("temp dir path should be utf-8")).expect("local endpoint");
        endpoint.set_pool_index(0);
        endpoint.set_set_index(0);
        endpoint.set_disk_index(0);

        EndpointServerPools(vec![PoolEndpoints {
            legacy: false,
            set_count: 1,
            drives_per_set: 1,
            endpoints: Endpoints::from(vec![endpoint]),
            cmd_line: "instance-ctx-disk-registry-test".to_string(),
            platform: "test".to_string(),
        }])
    }

    async fn target_disk(ctx: &Arc<InstanceContext>, root: &std::path::Path, id: Uuid) -> DiskStore {
        let mut format = crate::layout::format::FormatV3::new(1, 1);
        format.erasure.this = id;
        format.erasure.sets[0][0] = id;
        let meta = root.join(crate::disk::RUSTFS_META_BUCKET);
        tokio::fs::create_dir_all(&meta).await.expect("create format volume");
        tokio::fs::write(
            meta.join(crate::disk::FORMAT_CONFIG_FILE),
            serde_json::to_vec(&format).expect("encode format"),
        )
        .await
        .expect("write real disk identity");
        let mut endpoint = Endpoint::try_from(root.to_str().expect("UTF-8 root")).expect("endpoint");
        endpoint.set_pool_index(0);
        endpoint.set_set_index(0);
        endpoint.set_disk_index(0);
        let disk = new_disk(
            &endpoint,
            &DiskOption {
                cleanup: false,
                health_check: false,
            },
        )
        .await
        .expect("open real local disk");
        assert_eq!(disk.get_disk_id().await.expect("read disk format identity"), Some(id));
        ctx.local_disk_map()
            .write()
            .await
            .insert(disk.endpoint().to_string(), Some(disk.clone()));
        disk
    }

    fn target_file_info(object: &str, version: Uuid, body: &'static [u8]) -> FileInfo {
        let mut fi = FileInfo::new(object, 1, 0);
        fi.erasure.index = 1;
        fi.version_id = Some(version);
        fi.mod_time = Some(OffsetDateTime::now_utc());
        fi.size = i64::try_from(body.len()).expect("fixture length");
        fi.parts = vec![rustfs_filemeta::ObjectPartInfo {
            number: 1,
            size: body.len(),
            actual_size: fi.size,
            ..Default::default()
        }];
        fi.data = Some(bytes::Bytes::from_static(body));
        fi.set_inline_data();
        fi
    }

    async fn seed_target(disk: &DiskStore, volume: &str, object: &str, fi: FileInfo) -> Vec<u8> {
        let dir = disk.path().join(volume);
        tokio::fs::create_dir_all(&dir).await.expect("real fixture volume");
        disk.write_metadata(volume, volume, object, fi.clone())
            .await
            .expect("seed real metadata");
        let read = disk
            .read_version(
                volume,
                volume,
                object,
                &fi.version_id.expect("fixture version").to_string(),
                &crate::disk::ReadOptions {
                    read_data: true,
                    ..Default::default()
                },
            )
            .await
            .expect("read fixture before mutation");
        assert_eq!(read.data, fi.data, "fixture must contain readable inline bytes");
        tokio::fs::read(dir.join(object).join(crate::disk::STORAGE_FORMAT_FILE))
            .await
            .expect("seeded metadata bytes")
    }

    #[tokio::test]
    async fn target_uuid_lookup_binds_real_disk_and_owner_to_one_instance() {
        for warm in [false, true] {
            let ctx_a = Arc::new(InstanceContext::new());
            let ctx_b = Arc::new(InstanceContext::new());
            let a = tempfile::tempdir().expect("A root");
            let b = tempfile::tempdir().expect("B root");
            let id = Uuid::new_v4();
            let disk_a = target_disk(&ctx_a, a.path(), id).await;
            let disk_b = target_disk(&ctx_b, b.path(), id).await;
            if warm {
                assert!(record_local_disk_id_if_active(&ctx_a, &disk_a, id).await);
                assert!(record_local_disk_id_if_active(&ctx_b, &disk_b, id).await);
            }
            let version = Uuid::new_v4();
            let fi = target_file_info("destination", version, b"new-A");
            for disk in [&disk_a, &disk_b] {
                seed_target(disk, "target-bucket", "staged", fi.clone()).await;
            }
            let b_before = seed_target(
                &disk_b,
                "target-bucket",
                "destination",
                target_file_info("destination", version, b"old-B"),
            )
            .await;
            let store = super::super::tests::build_store_with_ctx(ctx_a.clone());
            store
                .rename_local_data(&id.to_string(), ("target-bucket", "staged"), &fi, ("target-bucket", "destination"), None)
                .await
                .expect("rename on A");
            let read = disk_a
                .read_version(
                    "target-bucket",
                    "target-bucket",
                    "destination",
                    &version.to_string(),
                    &crate::disk::ReadOptions {
                        read_data: true,
                        ..Default::default()
                    },
                )
                .await
                .expect("read committed A");
            assert_eq!(read.data, fi.data, "warm={warm}");
            assert_eq!(
                tokio::fs::read(b.path().join("target-bucket/destination/xl.meta"))
                    .await
                    .expect("B metadata"),
                b_before
            );
            assert!(b.path().join("target-bucket/staged/xl.meta").exists());
            assert!(ctx_a.namespace_commit_generation() > 0);
            assert_eq!(ctx_b.namespace_commit_generation(), 0);
            assert!(!ctx_a.namespace_commits_pending());
            assert!(!ctx_b.namespace_commits_pending());
            assert_eq!(ctx_a.local_disk_id_map().read().await.get(&id), Some(&disk_a.endpoint().to_string()));
        }
    }

    #[tokio::test]
    async fn target_admission_rejects_removed_quarantined_and_replaced_arcs() {
        let ctx = Arc::new(InstanceContext::new());
        let root = tempfile::tempdir().expect("root");
        let disk = target_disk(&ctx, root.path(), Uuid::new_v4()).await;
        let endpoint = disk.endpoint().to_string();
        for state in ["removed", "quarantined", "replaced"] {
            let replacement = new_disk(
                &disk.endpoint(),
                &DiskOption {
                    cleanup: false,
                    health_check: false,
                },
            )
            .await
            .expect("separate active Arc");
            let map = ctx.local_disk_map();
            let mut entries = map.write().await;
            match state {
                "removed" => {
                    entries.remove(&endpoint);
                }
                "quarantined" => {
                    entries.insert(endpoint.clone(), None);
                }
                _ => {
                    entries.insert(endpoint.clone(), Some(replacement));
                }
            }
            drop(entries);
            assert!(
                matches!(admit_local_disk(&ctx, &disk, None, "target-bucket").await, Err(DiskError::DiskNotFound)),
                "{state}"
            );
            assert!(!ctx.namespace_commits_pending());
            assert_eq!(ctx.namespace_commit_generation(), 0);
        }
    }

    #[tokio::test]
    async fn target_uuid_cache_cannot_admit_a_different_format_at_the_same_path() {
        let ctx = Arc::new(InstanceContext::new());
        let root = tempfile::tempdir().expect("root");
        let old_id = Uuid::new_v4();
        let old = target_disk(&ctx, root.path(), old_id).await;
        assert!(record_local_disk_id_if_active(&ctx, &old, old_id).await);
        let replacement_id = Uuid::new_v4();
        let replacement = target_disk(&ctx, root.path(), replacement_id).await;
        assert!(!Arc::ptr_eq(&old, &replacement));
        assert!(matches!(
            local_disk_candidate(&ctx, &old_id.to_string()).await,
            Err(DiskError::DiskNotFound)
        ));
        let (candidate, verified) = local_disk_candidate(&ctx, &replacement_id.to_string())
            .await
            .expect("replacement UUID");
        assert!(Arc::ptr_eq(&candidate, &replacement));
        assert_eq!(verified, Some(replacement_id));
        assert!(!ctx.namespace_commits_pending());
    }

    #[tokio::test]
    async fn bootstrap_rejects_user_volumes_aliases_and_scanner_tokens_without_mutation() {
        let ctx = Arc::new(InstanceContext::new());
        let root = tempfile::tempdir().expect("root");
        let disk = target_disk(&ctx, root.path(), Uuid::new_v4()).await;
        let target = BootstrapLocalTarget::new(ctx.clone());
        let fi = target_file_info("destination", Uuid::new_v4(), b"body");
        let user_before = seed_target(&disk, "victim", "staged", fi.clone()).await;
        let meta_before = seed_target(&disk, ".rustfs.sys/tmp", "staged", fi.clone()).await;
        for invalid in [
            "victim",
            ".rustfs.sys/../victim",
            ".rustfs.sys/./tmp",
            ".rustfs.sys/ .. /victim",
            ".rustfs.sys\\..\\victim",
            ".minio.sys/../victim",
        ] {
            for (src, dst) in [(invalid, ".rustfs.sys/tmp"), (".rustfs.sys/tmp", invalid)] {
                assert!(
                    target
                        .rename_local_data(&disk.endpoint().to_string(), (src, "staged"), &fi, (dst, "destination"), None)
                        .await
                        .is_err(),
                    "src={src}, dst={dst}"
                );
            }
            assert!(
                target
                    .undo_local_write(
                        &disk.endpoint().to_string(),
                        invalid,
                        "staged",
                        fi.clone(),
                        DeleteOptions {
                            undo_write: true,
                            ..Default::default()
                        }
                    )
                    .await
                    .is_err(),
                "{invalid}"
            );
        }
        assert!(
            target
                .rename_local_data(
                    &disk.endpoint().to_string(),
                    (".rustfs.sys/tmp", "staged"),
                    &fi,
                    (".rustfs.sys/tmp", "destination"),
                    Some(Uuid::new_v4())
                )
                .await
                .is_err()
        );
        assert_eq!(
            tokio::fs::read(root.path().join("victim/staged/xl.meta"))
                .await
                .expect("user source"),
            user_before
        );
        assert_eq!(
            tokio::fs::read(root.path().join(".rustfs.sys/tmp/staged/xl.meta"))
                .await
                .expect("metadata source"),
            meta_before
        );
        assert!(!root.path().join("victim/destination").exists());
        assert!(!root.path().join(".rustfs.sys/tmp/destination").exists());
        assert_eq!(ctx.namespace_commit_generation(), 0);
        assert!(!ctx.namespace_commits_pending());
    }

    #[tokio::test]
    async fn bootstrap_allows_internal_multisegment_rename_without_namespace_owner() {
        for volume in [".rustfs.sys/tmp", ".rustfs.sys/multipart", ".minio.sys/config"] {
            let ctx = Arc::new(InstanceContext::new());
            let root = tempfile::tempdir().expect("root");
            let disk = target_disk(&ctx, root.path(), Uuid::new_v4()).await;
            let fi = target_file_info("destination", Uuid::new_v4(), b"internal-CAS-body");
            seed_target(&disk, volume, "staged", fi.clone()).await;
            BootstrapLocalTarget::new(ctx.clone())
                .rename_local_data(&disk.endpoint().to_string(), (volume, "staged"), &fi, (volume, "destination"), None)
                .await
                .expect("legitimate bootstrap metadata write");
            let read = disk
                .read_version(
                    volume,
                    volume,
                    "destination",
                    &fi.version_id.expect("version").to_string(),
                    &crate::disk::ReadOptions {
                        read_data: true,
                        ..Default::default()
                    },
                )
                .await
                .expect("read bootstrap result");
            assert_eq!(read.data, fi.data);
            assert_eq!(ctx.namespace_commit_generation(), 0);
            assert!(!ctx.namespace_commits_pending());
        }
    }

    #[cfg(not(windows))]
    #[tokio::test]
    async fn target_rename_cancellation_retains_real_namespace_and_scanner_owners() {
        use crate::disk::os::prepared_publication_test_hooks as hooks;
        let ctx = Arc::new(InstanceContext::new());
        let sibling = Arc::new(InstanceContext::new());
        let root = tempfile::tempdir().expect("root");
        let disk = target_disk(&ctx, root.path(), Uuid::new_v4()).await;
        let store = super::super::tests::build_store_with_ctx(ctx.clone());
        let fi = target_file_info("destination", Uuid::new_v4(), b"physically-owned");
        seed_target(&disk, "target-bucket", "staged", fi.clone()).await;
        let (token, _) = store
            .acquire_scanner_publication_lease(0, crate::runtime::instance::SCANNER_PUBLICATION_LEASE_TTL)
            .await
            .expect("real scanner token in A");
        let destination = disk
            .get_object_path_for_io_if_local("target-bucket", "destination/xl.meta")
            .expect("local disk")
            .expect("destination IO path");
        let (entered_tx, entered_rx) = tokio::sync::oneshot::channel();
        let (release_tx, release_rx) = std::sync::mpsc::channel::<()>();
        let _hook = hooks::install(&destination, move || {
            let _ = entered_tx.send(());
            let _ = release_rx.recv();
        });
        let disk_ref = disk.endpoint().to_string();
        let mut rename = Box::pin(store.rename_local_data(
            &disk_ref,
            ("target-bucket", "staged"),
            &fi,
            ("target-bucket", "destination"),
            Some(token),
        ));
        tokio::time::timeout(std::time::Duration::from_secs(10), async {
            tokio::select! {
                result = &mut rename => panic!("rename completed before physical pause: {result:?}"),
                entered = entered_rx => entered.expect("physical rename entered"),
            }
        })
        .await
        .expect("bounded physical entry");
        drop(rename);
        assert!(store.scanner_data_usage_publication_blocked().await);
        assert!(ctx.namespace_commits_pending());
        assert!(!sibling.namespace_commits_pending());
        assert!(
            store
                .rename_local_data(&disk_ref, ("target-bucket", "staged"), &fi, ("target-bucket", "another"), Some(token))
                .await
                .is_err(),
            "real pending rename blocks another scanner publication"
        );
        assert!(store.release_scanner_publication_lease(token).await, "remove registered token");
        let gate = ctx.data_movement_operation_gate();
        assert!(
            gate.clone().try_write_owned().is_err(),
            "physical operation still owns the scanner read guard"
        );
        drop(release_tx);
        let _drained = tokio::time::timeout(std::time::Duration::from_secs(10), gate.write_owned())
            .await
            .expect("physical tail must release scanner guard");
        tokio::time::timeout(std::time::Duration::from_secs(10), async {
            while ctx.namespace_commits_pending() {
                tokio::task::yield_now().await;
            }
        })
        .await
        .expect("namespace owner drains");
        let read = disk
            .read_version(
                "target-bucket",
                "target-bucket",
                "destination",
                &fi.version_id.expect("version").to_string(),
                &crate::disk::ReadOptions {
                    read_data: true,
                    ..Default::default()
                },
            )
            .await
            .expect("read actual late commit");
        assert_eq!(read.data, fi.data);
        assert!(ctx.namespace_commit_generation() >= 2);
        assert_eq!(sibling.namespace_commit_generation(), 0);
    }

    #[tokio::test]
    async fn target_ready_rejects_unknown_foreign_released_and_expired_scanner_tokens() {
        let ctx = Arc::new(InstanceContext::new());
        let other = Arc::new(InstanceContext::new());
        let store = super::super::tests::build_store_with_ctx(ctx.clone());
        let other_store = super::super::tests::build_store_with_ctx(other);
        let root = tempfile::tempdir().expect("root");
        let disk = target_disk(&ctx, root.path(), Uuid::new_v4()).await;
        let fi = target_file_info("destination", Uuid::new_v4(), b"unchanged");
        let before = seed_target(&disk, "target-bucket", "staged", fi.clone()).await;
        let ttl = crate::runtime::instance::SCANNER_PUBLICATION_LEASE_TTL;
        let (foreign, _) = other_store.acquire_scanner_publication_lease(0, ttl).await.expect("B token");
        let (released, _) = store.acquire_scanner_publication_lease(0, ttl).await.expect("A token");
        assert!(store.release_scanner_publication_lease(released).await);
        let (valid, _) = store.acquire_scanner_publication_lease(0, ttl).await.expect("new A token");
        for token in [Uuid::new_v4(), foreign, released] {
            assert!(
                store
                    .rename_local_data(
                        &disk.endpoint().to_string(),
                        ("target-bucket", "staged"),
                        &fi,
                        ("target-bucket", "destination"),
                        Some(token)
                    )
                    .await
                    .is_err()
            );
        }
        tokio::time::pause();
        tokio::time::advance(ttl + std::time::Duration::from_secs(1)).await;
        tokio::time::resume();
        assert!(
            store
                .rename_local_data(
                    &disk.endpoint().to_string(),
                    ("target-bucket", "staged"),
                    &fi,
                    ("target-bucket", "destination"),
                    Some(valid)
                )
                .await
                .is_err(),
            "expired real token"
        );
        let _ = other_store.release_scanner_publication_lease(foreign).await;
        assert_eq!(
            tokio::fs::read(root.path().join("target-bucket/staged/xl.meta"))
                .await
                .expect("source bytes"),
            before
        );
        assert!(!root.path().join("target-bucket/destination").exists());
        assert!(!ctx.namespace_commits_pending());
    }

    #[cfg(not(windows))]
    #[tokio::test]
    #[serial_test::serial]
    async fn target_ordinary_timeout_keeps_its_physical_namespace_owner() {
        use crate::disk::os::prepared_publication_test_hooks as hooks;
        temp_env::async_with_vars([(rustfs_config::ENV_DRIVE_MAX_TIMEOUT_DURATION, Some("1"))], async {
            let ctx = Arc::new(InstanceContext::new());
            let store = super::super::tests::build_store_with_ctx(ctx.clone());
            let root = tempfile::tempdir().expect("root");
            let disk = target_disk(&ctx, root.path(), Uuid::new_v4()).await;
            let fi = target_file_info("destination", Uuid::new_v4(), b"timed-out-physical-commit");
            seed_target(&disk, "target-bucket", "staged", fi.clone()).await;
            let path = disk
                .get_object_path_for_io_if_local("target-bucket", "destination/xl.meta")
                .expect("local")
                .expect("destination IO path");
            let (entered_tx, entered_rx) = tokio::sync::oneshot::channel();
            let (release_tx, release_rx) = std::sync::mpsc::channel::<()>();
            let _hook = hooks::install(&path, move || {
                let _ = entered_tx.send(());
                let _ = release_rx.recv();
            });
            let disk_ref = disk.endpoint().to_string();
            let mut rename = Box::pin(store.rename_local_data(
                &disk_ref,
                ("target-bucket", "staged"),
                &fi,
                ("target-bucket", "destination"),
                None,
            ));
            tokio::time::timeout(std::time::Duration::from_secs(10), async {
                tokio::select! {
                    result = &mut rename => panic!("completed before physical pause: {result:?}"),
                    entered = entered_rx => entered.expect("physical entry"),
                }
            })
            .await
            .expect("bounded entry");
            tokio::time::pause();
            tokio::time::advance(std::time::Duration::from_secs(2)).await;
            tokio::time::resume();
            let result = tokio::time::timeout(std::time::Duration::from_secs(5), &mut rename)
                .await
                .expect("ordinary deadline remains enabled");
            assert!(matches!(result, Err(DiskError::Timeout)), "{result:?}");
            drop(rename);
            assert!(ctx.namespace_commits_pending(), "timeout is not a physical drain");
            drop(release_tx);
            tokio::time::timeout(std::time::Duration::from_secs(10), async {
                while ctx.namespace_commits_pending() {
                    tokio::task::yield_now().await;
                }
            })
            .await
            .expect("late physical owner drains");
            let read = disk
                .read_version(
                    "target-bucket",
                    "target-bucket",
                    "destination",
                    &fi.version_id.expect("version").to_string(),
                    &crate::disk::ReadOptions {
                        read_data: true,
                        ..Default::default()
                    },
                )
                .await
                .expect("read actual timeout tail");
            assert_eq!(read.data, fi.data);
        })
        .await;
    }

    #[test]
    fn endpoint_rpc_authority_preserves_port_and_ipv6_brackets() {
        let endpoint = Endpoint::try_from("https://127.0.0.1:9001/d1").expect("URL endpoint");
        assert_eq!(endpoint_rpc_authority(&endpoint).as_deref(), Some("127.0.0.1:9001"));

        let endpoint = Endpoint::try_from("https://[::1]:9002/d1").expect("IPv6 URL endpoint");
        assert_eq!(endpoint_rpc_authority(&endpoint).as_deref(), Some("[::1]:9002"));
    }

    #[tokio::test]
    #[serial_test::serial]
    async fn init_local_peer_publishes_complete_rpc_authority() {
        let previous = rustfs_common::get_global_local_node_name().await;
        let mut endpoint = Endpoint::try_from("https://127.0.0.1:9001/d1").expect("URL endpoint");
        endpoint.is_local = true;
        let endpoint_pools = EndpointServerPools(vec![PoolEndpoints {
            legacy: false,
            set_count: 1,
            drives_per_set: 1,
            endpoints: Endpoints::from(vec![endpoint]),
            cmd_line: "rpc-authority-test".to_string(),
            platform: "test".to_string(),
        }]);

        let host = String::new();
        let port = "9000".to_string();
        init_local_peer(&endpoint_pools, &host, &port).await;
        assert_eq!(rustfs_common::try_get_global_local_node_name().as_deref(), Some("127.0.0.1:9001"));
        rustfs_common::set_global_local_node_name(&previous).await;
    }

    // Phase 5 follow-up (backlog#1052): registering local disks through the
    // ctx-explicit entry writes the passed context's registry only — the
    // process bootstrap context (and any other instance) stays clean, so a
    // future second server's disks cannot leak into the first one's registry.
    #[tokio::test]
    async fn init_local_disks_with_instance_ctx_isolates_disk_registry() {
        let temp_dir = tempfile::tempdir().expect("create temp disk dir");
        let endpoint_pools = single_local_disk_pools(temp_dir.path());
        let instance_ctx = Arc::new(InstanceContext::new());

        init_local_disks_with_instance_ctx(&instance_ctx, endpoint_pools)
            .await
            .expect("local disks should register into the passed context");

        let registered: Vec<String> = instance_ctx.local_disk_map().read().await.keys().cloned().collect();
        assert_eq!(registered.len(), 1, "the passed context must hold exactly the one local disk");
        assert_eq!(
            instance_ctx.local_disk_set_drives().read().await.len(),
            1,
            "the passed context must hold the pool/set/drive layout"
        );

        let bootstrap = crate::runtime::instance::bootstrap_ctx();
        let bootstrap_map = bootstrap.local_disk_map();
        let bootstrap_map = bootstrap_map.read().await;
        let sibling = InstanceContext::new();
        for key in &registered {
            assert!(
                !bootstrap_map.contains_key(key),
                "bootstrap context must not absorb a disk registered into an explicit context"
            );
            assert!(
                !sibling.local_disk_map().read().await.contains_key(key),
                "a sibling context must not observe another instance's disks"
            );
        }
    }

    #[tokio::test]
    async fn stale_local_disk_snapshot_cannot_repopulate_the_id_registry() {
        let temp_dir = tempfile::tempdir().expect("create temp disk dir");
        let endpoint_pools = single_local_disk_pools(temp_dir.path());
        let instance_ctx = Arc::new(InstanceContext::new());
        init_local_disks_with_instance_ctx(&instance_ctx, endpoint_pools)
            .await
            .expect("local disk should be registered");
        let disk = instance_ctx
            .local_disk_map()
            .read()
            .await
            .values()
            .find_map(|disk| disk.clone())
            .expect("registered local disk");
        let endpoint = disk.endpoint().to_string();
        let disk_id = Uuid::new_v4();

        let local_disk_map = instance_ctx.local_disk_map();
        let mut quarantine = local_disk_map.write().await;
        let replacement = new_disk(
            &disk.endpoint(),
            &DiskOption {
                cleanup: false,
                health_check: false,
            },
        )
        .await
        .expect("replacement disk should initialize");
        assert!(!Arc::ptr_eq(&disk, &replacement));
        let task_ctx = instance_ctx.clone();
        let task_disk = disk.clone();
        let remember = tokio::spawn(async move { record_local_disk_id_if_active(&task_ctx, &task_disk, disk_id).await });
        tokio::task::yield_now().await;
        quarantine.insert(endpoint.clone(), Some(replacement.clone()));
        drop(quarantine);

        assert!(!remember.await.expect("stale lookup task should complete"));
        assert!(!instance_ctx.local_disk_id_map().read().await.contains_key(&disk_id));
        let active = instance_ctx
            .local_disk_map()
            .read()
            .await
            .get(&endpoint)
            .cloned()
            .flatten()
            .expect("replacement disk should remain registered");
        assert!(Arc::ptr_eq(&active, &replacement));
        assert!(record_local_disk_id_if_active(&instance_ctx, &replacement, disk_id).await);
        assert_eq!(instance_ctx.local_disk_id_map().read().await.get(&disk_id), Some(&endpoint));
    }
}