#!/usr/bin/env -S uv run --script

# /// script
# requires-python = ">=3.12"
# ///

"""Updates the TextMate plist grammar from the VS Code JSON grammar."""

__copyright__ = """
Part of the Carbon Language project, under the Apache License v2.0 with LLVM
Exceptions. See /LICENSE for license information.
SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
"""

import json
import plistlib
from pathlib import Path


def main() -> None:
    # Find repository root.
    repo_root = Path(__file__).resolve().parents[1]

    json_path = repo_root / "utils" / "vscode" / "carbon.tmLanguage.json"
    plist_path = (
        repo_root / "utils" / "textmate" / "Syntaxes" / "carbon.tmLanguage"
    )

    # Read and parse the JSON grammar.
    with open(json_path, "r", encoding="utf-8") as f:
        grammar_data = json.load(f)

    # Generate plist bytes.
    plist_bytes = plistlib.dumps(grammar_data, fmt=plistlib.FMT_XML)

    # Replace the file header.
    file_header = b"""<?xml version="1.0" encoding="UTF-8"?>

<!--
Part of the Carbon Language project, under the Apache License v2.0 with LLVM
Exceptions. See /LICENSE for license information.
SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-->

<!--
THIS FILE IS AUTOGENERATED FROM carbon.tmLanguage.json. DO NOT EDIT.
-->

<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
"""
    (_, body) = plist_bytes.split(b"<plist", 1)
    plist_bytes = file_header + b"<plist" + body

    # Write the plist grammar.
    with open(plist_path, "wb") as f:
        f.write(plist_bytes)

    print(f"Successfully generated {plist_path.relative_to(repo_root)}")


if __name__ == "__main__":
    main()