# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial

"""
generate_pyi.py

This script generates the .pyi files for all PySide modules.
"""

import argparse
import inspect
import logging
import os
import sys
import typing

from pathlib import Path
from types import SimpleNamespace

# Can we use forward references?
USE_PEP563 = sys.version_info[:2] >= (3, 7)


def generate_all_pyi(outpath, options):
    ps = os.pathsep
    if options.sys_path:
        # make sure to propagate the paths from sys_path to subprocesses
        normpath = lambda x: os.fspath(Path(x).resolve())
        sys_path = [normpath(_) for _ in options.sys_path]
        sys.path[0:0] = sys_path
        pypath = ps.join(sys_path)
        os.environ["PYTHONPATH"] = pypath

    # now we can import
    global PySide6, inspect, typing, HintingEnumerator, build_brace_pattern
    import PySide6
    from PySide6.support.signature.lib.enum_sig import HintingEnumerator
    from PySide6.support.signature.lib.tool import build_brace_pattern
    from PySide6.support.signature.lib.pyi_generator import generate_pyi

    # propagate USE_PEP563 to the mapping module.
    # Perhaps this can be automated?
    PySide6.support.signature.mapping.USE_PEP563 = USE_PEP563

    outpath = Path(outpath) if outpath and os.fspath(outpath) else Path(PySide6.__file__).parent
    name_list = PySide6.__all__ if options.modules == ["all"] else options.modules
    errors = ", ".join(set(name_list) - set(PySide6.__all__))
    if errors:
        raise ImportError(f"The module(s) '{errors}' do not exist")
    for mod_name in name_list:
        import_name = "PySide6." + mod_name
        if hasattr(sys, "pypy_version_info"):
            # PYSIDE-535: We cannot use __feature__ yet in PyPy
            generate_pyi(import_name, outpath, options)
        else:
            from PySide6.support import feature
            feature_id = feature.get_select_id(options.feature)
            with feature.force_selection(feature_id, import_name):
                generate_pyi(import_name, outpath, options)


if __name__ == "__main__":
    parser = argparse.ArgumentParser(
        description="This script generates the .pyi file for all PySide modules.")
    parser.add_argument("modules", nargs="+",
        help="'all' or the names of modules to build (QtCore QtGui etc.)")
    parser.add_argument("--quiet", action="store_true", help="Run quietly")
    parser.add_argument("--check", action="store_true", help="Test the output if on Python 3")
    parser.add_argument("--outpath",
        help="the output directory (default = binary location)")
    parser.add_argument("--sys-path", nargs="+",
        help="a list of strings prepended to sys.path")
    parser.add_argument("--feature", nargs="+", choices=["snake_case", "true_property"], default=[],
        help="""a list of feature names. Example: `--feature snake_case true_property`""")
    options = parser.parse_args()

    qtest_env = os.environ.get("QTEST_ENVIRONMENT", "")
    log_level = logging.DEBUG if qtest_env else logging.INFO
    if options.quiet:
        log_level = logging.WARNING
    logging.basicConfig(level=log_level)
    logger = logging.getLogger("generate_pyi")

    outpath = options.outpath
    if outpath and not Path(outpath).exists():
        os.makedirs(outpath)
        logger.info(f"+++ Created path {outpath}")
    options._pyside_call = True
    options.logger = logger
    options.is_ci = qtest_env == "ci"
    generate_all_pyi(outpath, options=options)
# eof
