#!/usr/bin/env python3
"""Backend for /aircontext-status."""
from __future__ import annotations
import json
import os
import sys
import time
from pathlib import Path

_HERE = Path(__file__).resolve().parent
sys.path.insert(0, str(_HERE))

from core.config_loader import load_config, validate_config  # noqa: E402
from core.state import StateFile  # noqa: E402


def main() -> int:
    project = Path(os.environ.get("CLAUDE_PROJECT_DIR", os.getcwd()))
    air = project / "AirContext"
    cfg_path = air / "config.yaml"
    print(f"Project root:    {project}")
    print(f"AirContext dir:  {air} {'(present)' if air.exists() else '(MISSING)'}")
    if not cfg_path.exists():
        print("Status: not initialised. Run /aircontext-init.")
        return 0
    err = validate_config(cfg_path)
    if err:
        print(f"Config: invalid — {err}")
    else:
        cfg = load_config(cfg_path)
        b = cfg.get("backend", {})
        t = cfg.get("trigger", {})
        print(f"Backend:         {b.get('endpoint')} (model={b.get('model')})")
        print(
            f"Trigger:         strategy={t.get('strategy')} "
            f"threshold={t.get('threshold')} window={t.get('model_context_window')}"
        )

    state = StateFile(air / "state.json").read()
    print(f"Paused:          {state.get('paused')}")
    print(f"Compacting now:  {state.get('compaction_in_progress')}")
    print(f"Ready to apply:  {state.get('compaction_ready')}")
    last = state.get("last_compaction_unix") or 0
    if last:
        ago = int(time.time() - last)
        print(f"Last compaction: {ago}s ago")
    else:
        print("Last compaction: never")
    snapshots = air / "snapshots"
    if snapshots.exists():
        files = [p for p in snapshots.iterdir() if p.suffix == ".jsonl"]
        print(f"Snapshots:       {len(files)} stored under {snapshots}")
    return 0


if __name__ == "__main__":
    sys.exit(main())