#!/usr/bin/env fuchsia-vendored-python
# Copyright 2021 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import argparse
import os
import sys

from jinja2 import Environment, FileSystemLoader


def main(args_list: list[str] | None = None) -> int:
    parser = argparse.ArgumentParser(
        description="Generate FFX Services Register Macro"
    )
    parser.add_argument(
        "--template",
        help="The template file to use to generate code",
        required=True,
    )
    parser.add_argument(
        "--out", help="The output file to generate", required=True
    )
    parser.add_argument(
        "--deps", help="Comma-separated list of protocols", required=True
    )
    parser.add_argument(
        "--deps_full",
        help="Comma-separated list of protocol labels",
        required=True,
    )
    if args_list:
        args = parser.parse_args(args_list)
    else:
        args = parser.parse_args()

    # Zip together deps with their full path.
    deps: list[dict[str, str]] = list(
        dict(zip(("lib", "target"), i))
        for i in zip(args.deps.split(","), args.deps_full.split(","))
    )

    template_dir, template_name = os.path.split(args.template)
    env = Environment(
        loader=FileSystemLoader(template_dir),
        trim_blocks=True,
        lstrip_blocks=True,
    )
    template = env.get_template(template_name)
    with open(args.out, "w") as f:
        render = template.render(deps=deps)
        f.write(render)
    return 0


if __name__ == "__main__":
    sys.exit(main())