"""Build a minimal NuGet v3 static feed around one real, `dotnet pack`-built
.nupkg, for integration-testing the `nuget` module of id-configurator.

Only two resources are populated: the flat container (`PackageBaseAddress`,
used to enumerate versions and download the .nupkg directly) and the
top-level service index pointing at it. `dotnet add package`/`dotnet
restore` with an explicit, dependency-free package version only ever calls
these two - never the (considerably more complex) registration resource -
so it is intentionally not implemented here.

The service index bakes in a __BASE_URL__ placeholder for its "@id" fields,
since the host:port this fixture is actually reached on is only known once
tox-docker starts the container, not at image-build time (see
nuget-repo.nginx.conf). The flat container's own files never embed a URL,
so they need no such rewriting.
"""

from __future__ import annotations

import json
import pathlib
import shutil

PACKAGE_ID = "idconfiguratortestpkg"
VERSION = "0.0.1"
NUPKG_NAME = f"{PACKAGE_ID}.{VERSION}.nupkg"
NUPKG_SRC = pathlib.Path("/nupkg") / NUPKG_NAME
OUT_DIR = pathlib.Path("/srv")


def write_flat_container() -> None:
    package_dir = OUT_DIR / "flatcontainer" / PACKAGE_ID
    version_dir = package_dir / VERSION
    version_dir.mkdir(parents=True, exist_ok=True)
    (package_dir / "index.json").write_text(
        json.dumps({"versions": [VERSION]}), encoding="utf-8"
    )
    shutil.copy(NUPKG_SRC, version_dir / NUPKG_NAME)


def write_service_index() -> None:
    index = {
        "version": "3.0.0",
        "resources": [
            {
                "@id": "__BASE_URL__/flatcontainer/",
                "@type": "PackageBaseAddress/3.0.0",
            }
        ],
    }
    (OUT_DIR / "index.json").write_text(json.dumps(index), encoding="utf-8")


def main() -> None:
    OUT_DIR.mkdir(parents=True, exist_ok=True)
    write_flat_container()
    write_service_index()


if __name__ == "__main__":
    main()