"""Tests del library loader."""

from __future__ import annotations

import json
from pathlib import Path

from vmssailor.library.loader import load_library


def test_loader_returns_result_with_format() -> None:
    r = load_library()
    s = r.format()
    assert "Library load summary" in s
    assert "Vessels" in s
    assert "EquipmentModels" in s


def test_loader_handles_corrupt_json(tmp_path: Path) -> None:
    # Construimos una biblioteca falsa con un JSON malo
    fake_lib = tmp_path / "lib"
    (fake_lib / "vessels").mkdir(parents=True)
    (fake_lib / "vessels" / "broken.json").write_text("{ not valid json", encoding="utf-8")
    (fake_lib / "equipment").mkdir(parents=True)
    (fake_lib / "rules").mkdir(parents=True)
    # systems_catalog.json mínimo válido
    (fake_lib / "systems_catalog.json").write_text(
        json.dumps({"_meta": {"version": 1}, "categories": []}), encoding="utf-8"
    )
    r = load_library(fake_lib)
    assert not r.ok()
    assert any("broken.json" in i.path for i in r.errors)


def test_loader_handles_missing_systems_catalog(tmp_path: Path) -> None:
    fake_lib = tmp_path / "lib"
    fake_lib.mkdir()
    r = load_library(fake_lib)
    assert any("systems_catalog.json" in i.path for i in r.errors)