//! CRDT state layer — manages pipeline state as a conflict-free replicated document backed by SQLite.
//!
//! The CRDT document is the primary source of truth for pipeline item
//! metadata (stage, name, agent, etc.).  CRDT ops are persisted to SQLite so
//! state survives restarts.  The filesystem `.huskies/work/` directories are
//! still updated as a secondary output for backwards compatibility.
//!
//! Stage transitions detected by `write_item()` are broadcast as [`CrdtEvent`]s
//! so subscribers (auto-assign, WebSocket, notifications) can react without
//! polling the filesystem.

#![allow(unused_imports, dead_code)]
use std::collections::HashMap;

/// A vector clock mapping node IDs (hex-encoded Ed25519 pubkeys) to the count
/// of ops seen from that node.  Used for delta sync — a connecting peer sends
/// its clock so the other side can compute which ops are missing.
pub type VectorClock = HashMap<String, u64>;

mod ops;
mod presence;
mod read;
mod state;
mod types;
mod write;

pub use ops::{all_ops_json, apply_remote_op, ops_since, our_vector_clock, subscribe_ops};
pub use presence::{
    is_claimed_by_us, our_node_id, read_all_node_presence, release_claim, sign_challenge,
    sign_versioned_challenge, write_claim, write_node_metadata, write_node_presence,
};
pub use read::{
    CrdtItemDump, CrdtStateDump, check_archived_deps_crdt, check_unmet_deps_crdt,
    dep_is_archived_crdt, dep_is_done_crdt, dump_crdt_state, evict_item, read_all_items, read_item,
};
pub use state::init;
pub use types::{
    CrdtEvent, NodePresenceCrdt, NodePresenceView, PipelineDoc, PipelineItemCrdt, PipelineItemView,
    subscribe,
};
pub use write::{
    migrate_names_from_slugs, migrate_story_ids_to_numeric, name_from_story_id, write_item,
};

#[cfg(test)]
pub use state::init_for_test;

pub(crate) use state::{ALL_OPS, VECTOR_CLOCK};

/// Hex-encode a byte slice (no external dep needed).
pub(crate) mod hex {
    pub fn encode(bytes: &[u8]) -> String {
        bytes.iter().map(|b| format!("{b:02x}")).collect()
    }
}