#!/usr/bin/env python3
"""Sync Aligner's macOS app icon assets from the design handoff."""

from __future__ import annotations

import json
import shutil
from pathlib import Path


OUTPUT_ROOT = Path(__file__).resolve().parents[1]
PROJECT_ROOT = OUTPUT_ROOT.parent
RESOURCES = OUTPUT_ROOT / "C1.source" / "Resources"
APPICONSET = RESOURCES / "Assets.xcassets" / "AppIcon.appiconset"
ICNS_PATH = RESOURCES / "AppIcon.icns"

HANDOFF_DIR = (
    PROJECT_ROOT
    / "02-P"
    / "Round01-QuickSwitch-MVP"
    / "02.ui设计稿"
    / "AppIcon-D1-BigBars-Handoff-20260604"
)
HANDOFF_ICONSET = HANDOFF_DIR / "AppIcon-D1-BigBars.iconset"
HANDOFF_ICNS = HANDOFF_DIR / "Aligner-AppIcon-D1-BigBars.icns"
HANDOFF_PREVIEW = HANDOFF_DIR / "Aligner-AppIcon-D1-BigBars-1024.png"

ICON_FILES = [
    "icon_16x16.png",
    "icon_16x16@2x.png",
    "icon_32x32.png",
    "icon_32x32@2x.png",
    "icon_128x128.png",
    "icon_128x128@2x.png",
    "icon_256x256.png",
    "icon_256x256@2x.png",
    "icon_512x512.png",
    "icon_512x512@2x.png",
]


def require_file(path: Path) -> None:
    if not path.is_file():
        raise FileNotFoundError(f"missing app icon source: {path}")


def load_contents_json() -> dict:
    contents_path = HANDOFF_ICONSET / "Contents.json"
    require_file(contents_path)
    with contents_path.open("r", encoding="utf-8") as file:
        return json.load(file)


def sync_iconset() -> None:
    APPICONSET.mkdir(parents=True, exist_ok=True)
    contents = load_contents_json()

    for filename in ICON_FILES:
        source = HANDOFF_ICONSET / filename
        require_file(source)
        shutil.copy2(source, APPICONSET / filename)

    require_file(HANDOFF_PREVIEW)
    shutil.copy2(HANDOFF_PREVIEW, APPICONSET / "icon_1024_preview.png")

    with (APPICONSET / "Contents.json").open("w", encoding="utf-8") as file:
        json.dump(contents, file, indent=2, ensure_ascii=False)
        file.write("\n")


def sync_icns() -> None:
    require_file(HANDOFF_ICNS)
    shutil.copy2(HANDOFF_ICNS, ICNS_PATH)


def main() -> None:
    sync_iconset()
    sync_icns()
    print(f"Synced AppIcon assets from: {HANDOFF_DIR}")


if __name__ == "__main__":
    main()