#!/usr/bin/env python3
"""install_mimo_tools.py — canonical MiMo tool installer (TTY-repair tranche).

Canonical sources: config/mimo-tools/{bash.ts,await-operation.ts}
Targets:           ~/.mimocode/tools/{bash.ts,await-operation.ts}
Verifies hashes after install; detects drift in both directions
(the parity test reads these hashes).
"""
import hashlib
import shutil
import sys
from pathlib import Path

REPO = Path(__file__).resolve().parent.parent
TOOLS = ["bash.ts", "await-operation.ts"]


def sha256(p: Path) -> str:
    return hashlib.sha256(p.read_bytes()).hexdigest()


def main() -> int:
    rc = 0
    for name in TOOLS:
        canon = REPO / "config" / "mimo-tools" / name
        target = Path.home() / ".mimocode" / "tools" / name
        if not canon.is_file():
            print(f"{name}: canonical source missing: {canon}")
            rc = 1
            continue
        canon_hash = sha256(canon)
        if target.is_file() and sha256(target) == canon_hash:
            print(f"{name}: in-sync {canon_hash[:12]}")
            continue
        drift = f"DRIFT canonical={canon_hash[:12]}"
        if target.is_file():
            drift += f" installed={sha256(target)[:12]}"
        else:
            drift += " installed=MISSING"
        print(f"{name}: {drift} — installing")
        target.parent.mkdir(parents=True, exist_ok=True)
        shutil.copy2(canon, target)
        if sha256(target) != canon_hash:
            print(f"{name}: INSTALL FAILED (hash mismatch after copy)")
            rc = 1
        else:
            print(f"{name}: installed {canon_hash[:12]}")
    return rc


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