"""Build a Nuitka-compiled orisys wheel and publish it to SDK/{version}/.

Pipeline:
  1. Compile src/orisys → extension module (.pyd / .so)
  2. Stage wheel tree (compiled module + bundled files from pyproject.toml)
  3. Run bdist_wheel; on Linux, auditwheel-repair to a manylinux tag
  4. Smoke-test imports in a temporary venv (required for --target pypi-linux)

Targets:
  internal   – local/SDK delivery (default). Linux still repairs with auditwheel.
  pypi-linux – PyPI binary wheel; requires Linux + CPython 3.10/3.11/3.12 + compliant tag.

Run from repo root:
  python build/build_nuitka.py
  python build/build_nuitka.py --target pypi-linux
"""

from __future__ import annotations

import argparse
import os
import shutil
import subprocess
import sys
from pathlib import Path

from nuitka_compile import compile_orisys, copy_compiled_orisys, install_nuitka
from paths import NUITKA_COMPILE_DIR, NUITKA_WHEEL_DIR, REPO_ROOT, repaired_wheel_dir, repo_path
from pyproject_utils import bundle_items, extras_require, get_version, install_requires
from verify import verify_built_wheel
from wheel_build import (
    is_compliant_manylinux_wheel,
    publish_wheel_to_sdk,
    repair_linux_wheel,
    run_bdist_wheel,
    write_wheel_setup,
)
from wheel_layout import copy_bundle_items, copy_orisys_blend, package_data_from_bundle

VALID_TARGETS = ("internal", "pypi-linux")
# ABI tags that manylinux images ship under /opt/python/cpXYY-cpXYY.
PYPI_LINUX_PYTHON_VERSIONS = ((3, 10), (3, 11), (3, 12))


def _reset_dir(path: Path) -> None:
    """Remove and recreate a build output directory."""
    if path.exists():
        shutil.rmtree(path)
    path.mkdir(parents=True)


def _validate_pypi_linux_environment() -> None:
    if sys.platform != "linux":
        raise SystemExit(
            "[ERROR] --target pypi-linux must run inside a Linux manylinux container "
            "(for example quay.io/pypa/manylinux_2_28_x86_64 via Docker Desktop)."
        )
    if sys.version_info[:2] not in PYPI_LINUX_PYTHON_VERSIONS:
        supported = ", ".join(f"{major}.{minor}" for major, minor in PYPI_LINUX_PYTHON_VERSIONS)
        raise SystemExit(
            f"[ERROR] --target pypi-linux requires CPython {supported}, got "
            f"{sys.version_info.major}.{sys.version_info.minor}. "
            "Use /opt/python/cp310-cp310 (or cp311/cp312) in the manylinux_2_28 image."
        )


def build(*, target: str = "internal", verify: bool | None = None) -> Path:
    if target not in VALID_TARGETS:
        raise SystemExit(f"[ERROR] Unknown target {target!r}; choose from {VALID_TARGETS}")

    if target == "pypi-linux":
        _validate_pypi_linux_environment()

    # pypi-linux always verifies; internal opts in with --verify.
    if verify is None:
        verify = target == "pypi-linux"

    # --- 1. Compile ---
    install_nuitka()

    version = get_version(REPO_ROOT)
    _reset_dir(NUITKA_COMPILE_DIR)
    _reset_dir(NUITKA_WHEEL_DIR)

    print(f"\n=== Compiling with Nuitka (target={target}, version={version}) ===")
    env = os.environ.copy()
    src_dir = repo_path("src")
    env["PYTHONPATH"] = src_dir.as_posix() + os.pathsep + env.get("PYTHONPATH", "")
    ext_file = compile_orisys(NUITKA_COMPILE_DIR, env)

    # --- 2. Stage wheel contents ---
    print("\n=== Preparing Wheel Structure ===")
    pkg_dir = NUITKA_WHEEL_DIR / "wheel_root" / "orisys"
    pkg_dir.mkdir(parents=True)

    ext_suffix = copy_compiled_orisys(pkg_dir, ext_file)

    wheel_root = NUITKA_WHEEL_DIR / "wheel_root"
    blend_count = copy_orisys_blend(REPO_ROOT, wheel_root)
    print(f"Staged orisys_blend Python modules: {blend_count}")

    # Bundle rules live in pyproject.toml → [[tool.orisys.bundle.items]]
    bundle = bundle_items(REPO_ROOT)
    copied_counts = copy_bundle_items(REPO_ROOT, pkg_dir, bundle)
    print(f"Copied {copied_counts['configs']} JSON config files")
    print(f"Copied {copied_counts['examples']} example files to orisys/examples/")
    print(f"Copied {copied_counts['docs']} doc files to orisys/docs/")
    print(f"Copied {copied_counts['assets']} finger asset files to orisys/assets/")

    write_wheel_setup(
        NUITKA_WHEEL_DIR,
        version=version,
        package_data=package_data_from_bundle(ext_suffix, bundle),
        install_requires=install_requires(REPO_ROOT),
        extras_require=extras_require(REPO_ROOT),
    )

    # --- 3. Build wheel, repair on Linux, publish to SDK/ ---
    wheel_path = run_bdist_wheel(NUITKA_WHEEL_DIR)
    if wheel_path is None:
        raise SystemExit("\n[ERROR] Wheel not found after bdist_wheel.")

    repair_dir = repaired_wheel_dir()
    final_candidate = repair_linux_wheel(wheel_path, repair_dir)

    if target == "pypi-linux" and not is_compliant_manylinux_wheel(final_candidate):
        raise SystemExit(
            f"[ERROR] Wheel is not PyPI-compliant: {final_candidate.name}. "
            "Expected a manylinux_2_17_x86_64 (or newer) platform tag."
        )

    # Keep a durable copy under dist/repaired for upload tooling.
    dist_repaired = REPO_ROOT / "dist" / "repaired"
    dist_repaired.mkdir(parents=True, exist_ok=True)
    dist_copy = dist_repaired / final_candidate.name
    if dist_copy.resolve() != final_candidate.resolve():
        shutil.copy2(final_candidate, dist_copy)

    final_wheel = publish_wheel_to_sdk(final_candidate, version)
    print(f"\n[SUCCESS] Wheel created and copied to: {final_wheel}")
    print(f"[SUCCESS] Upload candidate also at: {dist_copy}")

    # --- 4. Verify (isolated venv; does not touch the active environment) ---
    if verify:
        print("\n=== Verifying wheel imports in isolated venv ===")
        try:
            verify_built_wheel(final_wheel)
            print("[SUCCESS] Wheel smoke test passed.")
        except subprocess.CalledProcessError as exc:
            if target == "pypi-linux":
                raise SystemExit(
                    f"[ERROR] Wheel verify failed (required for pypi-linux): {exc}"
                ) from exc
            print(f"\n[WARNING] Wheel verify failed: {exc}")
            print("The wheel was built successfully; verification runs in an isolated temp venv.")
    else:
        print("\n[INFO] Skipping wheel verify (pass --verify to enable).")

    return final_wheel


def main(argv: list[str] | None = None) -> None:
    parser = argparse.ArgumentParser(description="Build a Nuitka-compiled orisys wheel.")
    parser.add_argument(
        "--target",
        choices=VALID_TARGETS,
        default="internal",
        help="internal: SDK delivery; pypi-linux: manylinux PyPI binary wheel",
    )
    parser.add_argument(
        "--verify",
        action="store_true",
        help="Run isolated venv smoke test (always on for --target pypi-linux)",
    )
    parser.add_argument(
        "--skip-verify",
        action="store_true",
        help="Skip smoke test when using --target internal",
    )
    args = parser.parse_args(argv)
    verify: bool | None
    if args.target == "pypi-linux":
        verify = True
    elif args.verify:
        verify = True
    elif args.skip_verify:
        verify = False
    else:
        verify = None
    build(target=args.target, verify=verify)


if __name__ == "__main__":
    main()