#!/usr/bin/env python3
"""Summarize a sorter plan JSON: match kinds, top targets, oddities."""
import json
import sys
from collections import Counter
from pathlib import Path

plan = json.loads(Path(sys.argv[1]).read_text())
print(f"files: {len(plan)}")
print("kinds:", Counter(p["kind"] for p in plan))
print("actions:", Counter(p.get("action", "?") for p in plan))
# system breakdown
print("systems:", Counter(p["system"] for p in plan).most_common(10))
# top-level targets
roots = Counter(str(Path(p["target"]).relative_to(
    Path(p["target"]).parents[3])) if len(Path(p["target"]).parents) > 3
    else p["target"] for p in plan)
for root, n in roots.most_common(15):
    print(f"  {n:5d}  {root}")
# anything with empty target?
empties = [p for p in plan if not p.get("target")]
print("empty targets:", len(empties))