#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""Инвентаризация DXF: блоки, атрибуты, слои, вставки. Без AutoCAD (ezdxf).

    python3 inspect_dxf.py library/электрика_блоки.dxf
    python3 inspect_dxf.py examples/plan_el_final.dxf
"""
import sys

import ezdxf


def inspect(path: str) -> None:
    doc = ezdxf.readfile(path)
    print(f"=== {path}")
    print(f"  версия DXF: {doc.dxfversion}")
    print(f"  слои ({len(doc.layers)}): {[l.dxf.name for l in doc.layers]}")
    blocks = [b for b in doc.blocks if not b.name.startswith(("*Model", "*Paper"))]
    print(f"  блоков: {len(blocks)}")
    for b in blocks:
        kinds = {}
        attdefs = []
        for e in b:
            kinds[e.dxftype()] = kinds.get(e.dxftype(), 0) + 1
            if e.dxftype() == "ATTDEF":
                attdefs.append(e.dxf.tag)
        marker = "  (служебный: стрелка/маркер размера)" if b.name.startswith("_") else ""
        print(f"    {b.name:<12} {kinds}{'  атрибуты: ' + str(attdefs) if attdefs else ''}{marker}")
    ins_model = [e for e in doc.modelspace() if e.dxftype() == "INSERT"]
    print(f"  вставок в модели: {len(ins_model)}")
    for lay in doc.layouts:
        if lay.name == "Model":
            continue
        n = sum(1 for e in lay if e.dxftype() == "INSERT")
        if n:
            print(f"  вставок на листе «{lay.name}»: {n}")
    bad = [b.name for b in blocks if b.name.startswith("*U")]
    print(f"  анонимных блоков *U: {len(bad)} {bad if bad else ''}")


if __name__ == "__main__":
    if len(sys.argv) < 2:
        print(__doc__)
        sys.exit(1)
    for p in sys.argv[1:]:
        inspect(p)