import json
from datetime import datetime
from pathlib import Path

def last_backup():
    import subprocess
    out = subprocess.check_output(
        ["restic", "snapshots", "--json"],
        env=None
    ).decode()
    snaps = json.loads(out)
    snaps.sort(key=lambda s: s["time"], reverse=True)
    s = snaps[0]
    t = datetime.fromisoformat(s["time"].replace("Z", ""))
    return (
        "📦 Last backup\n\n"
        f"🕒 {t:%Y-%m-%d %H:%M}\n"
        f"🧊 ID: {s['short_id']}\n"
        f"📁 Paths: {len(s['paths'])}"
    )

def restore_help():
    return (
        "🧯 Restore help\n\n"
        "Example:\n"
        "restic restore <snapshot_id> --target /restore"
    )