"""Small local packaging and translation checks; not a replacement for hassfest."""
import json
from pathlib import Path
import struct
import subprocess

root = Path(__file__).resolve().parents[1]
component = root / "custom_components" / "heating_mpc"
manifest = json.loads((component / "manifest.json").read_text())
assert manifest["domain"] == "heating_mpc"
assert manifest["config_flow"] is True
assert manifest["iot_class"] == "local_polling"
assert not manifest["requirements"], "Model inference should remain dependency-free"
json.loads((root / "hacs.json").read_text())
# A version bump needs release notes (AGENTS.md: no version without documentation).
assert f"## {manifest['version']} " in (root / "CHANGELOG.md").read_text(), \
    f"CHANGELOG.md has no entry for {manifest['version']}"


def keys(value, prefix=()):
    if not isinstance(value, dict):
        return {prefix}
    return set().union(*(keys(child, (*prefix, key)) for key, child in value.items()))


strings = json.loads((component / "strings.json").read_text())
for language in ("en", "ro"):
    translated = json.loads((component / "translations" / f"{language}.json").read_text())
    assert keys(strings) == keys(translated), f"Translation keys differ: {language}"
# Brand icons (HA 2026.3+): square transparent PNGs; see scripts/make_brand_icons.py.
for name, size in (("icon.png", 256), ("icon@2x.png", 512),
                   ("dark_icon.png", 256), ("dark_icon@2x.png", 512)):
    png = (component / "brand" / name).read_bytes()
    assert png[:8] == b"\x89PNG\r\n\x1a\n" and png[12:16] == b"IHDR", f"{name} is not a PNG"
    width, height, _depth, color_type = struct.unpack(">IIBB", png[16:26])
    assert (width, height) == (size, size), f"{name} is {width}x{height}, expected {size}x{size}"
    assert color_type == 6, f"{name} needs an alpha channel"
tracked = subprocess.check_output(["git", "ls-files", "custom_components"], cwd=root, text=True).splitlines()
assert not any("__pycache__" in path or path.endswith((".pyc", ".pyo", ".DS_Store")) for path in tracked)
print("Package metadata, translations, brand icons and tracked component files passed")