import pytest

import yaml

from pathlib import Path

from pprint import pprint

from pyproject_preprocess_record import parse_record, read_record, save_parsed_record

from pyproject_save_files import argparser, generate_file_list, BuildrootPath

from pyproject_save_files import main as save_files_main

from pyproject_save_files import module_names_from_path

DIR = Path(__file__).parent

PREFIX = Path("/usr")

BINDIR = BuildrootPath("/usr/bin")

DATADIR = BuildrootPath("/usr/share")

SITELIB = BuildrootPath("/usr/lib/python3.7/site-packages")

SITEARCH = BuildrootPath("/usr/lib64/python3.7/site-packages")

yaml_file = DIR / "pyproject_save_files_test_data.yaml"

yaml_data = yaml.safe_load(yaml_file.read_text())

EXPECTED_DICT = yaml_data["classified"]

EXPECTED_FILES = yaml_data["dumped"]

TEST_RECORDS = yaml_data["records"]

TEST_METADATAS = yaml_data["metadata"]

@pytest.fixture

def tldr_root(tmp_path):

    prepare_pyproject_record(tmp_path, package="tldr")

    return tmp_path

@pytest.fixture

def pyproject_record(tmp_path):

    return tmp_path / "pyproject-record"

def prepare_pyproject_record(tmp_path, package=None, content=None):

    """

    Creates RECORD from test data and then uses

    functions from pyproject_process_record to convert

    it to pyproject-record file which is then

    further processed by functions from pyproject_save_files.

    """

    record_file = tmp_path / "RECORD"

    pyproject_record = tmp_path / "pyproject-record"

    if package is not None:

        # Get test data and write dist-info/RECORD file

        record_path = BuildrootPath(TEST_RECORDS[package]["path"])

        record_file.write_text(TEST_RECORDS[package]["content"])

        if package in TEST_METADATAS:

            metadata_path = BuildrootPath(TEST_METADATAS[package]["path"]).to_real(tmp_path)

            metadata_path.parent.mkdir(parents=True, exist_ok=True)

            metadata_path.write_text(TEST_METADATAS[package]["content"])

        # Parse RECORD file

        parsed_record = parse_record(record_path, read_record(record_file))

        # Save JSON content to pyproject-record

        save_parsed_record(record_path, parsed_record, pyproject_record)

    elif content is not None:

        save_parsed_record(*content, output_file=pyproject_record)

@pytest.fixture

def output_files(tmp_path):

    return tmp_path / "pyproject_files"

@pytest.fixture

def output_modules(tmp_path):

    return tmp_path / "pyproject_modules"

def test_parse_record_tldr():

    record_path = BuildrootPath(TEST_RECORDS["tldr"]["path"])

    record_content = read_record(DIR / "test_RECORD")

    output = list(parse_record(record_path, record_content))

    pprint(output)

    expected = [

        str(BINDIR / "__pycache__/tldr.cpython-37.pyc"),

        str(BINDIR / "tldr"),

        str(BINDIR / "tldr.py"),

        str(SITELIB / "__pycache__/tldr.cpython-37.pyc"),

        str(SITELIB / "tldr-0.5.dist-info/INSTALLER"),

        str(SITELIB / "tldr-0.5.dist-info/LICENSE"),

        str(SITELIB / "tldr-0.5.dist-info/METADATA"),

        str(SITELIB / "tldr-0.5.dist-info/RECORD"),

        str(SITELIB / "tldr-0.5.dist-info/WHEEL"),

        str(SITELIB / "tldr-0.5.dist-info/top_level.txt"),

        str(SITELIB / "tldr.py"),

    ]

    assert output == expected

def test_parse_record_tensorflow():

    long = "tensorflow_core/include/tensorflow/core/common_runtime/base_collective_executor.h"

    record_path = SITEARCH / "tensorflow-2.1.0.dist-info/RECORD"

    record_content = [

        ["../../../bin/toco_from_protos", "sha256=hello", "289"],

        [f"../../../lib/python3.7/site-packages/{long}", "sha256=darkness", "1024"],

        ["tensorflow-2.1.0.dist-info/METADATA", "sha256=friend", "2859"],

    ]

    output = list(parse_record(record_path, record_content))

    pprint(output)

    expected = [

        str(BINDIR / "toco_from_protos"),

        str(SITELIB / long),

        str(SITEARCH / "tensorflow-2.1.0.dist-info/METADATA"),

    ]

    assert output == expected

def remove_others(expected):

    return [

        p for p in expected

        if not (

            p.startswith(str(BINDIR)) or

            p.endswith(".pth") or

            p.endswith("*") or

            p.rpartition(' ')[-1].startswith(str(DATADIR))

        )

    ]

@pytest.mark.parametrize("include_auto", (True, False))

@pytest.mark.parametrize("package, glob, expected_files, expected_modules", EXPECTED_FILES)

def test_generate_file_list(package, glob, expected_files, include_auto, expected_modules):

    paths_dict = EXPECTED_DICT[package]

    modules_glob = {glob}

    if not include_auto:

        expected_files = remove_others(expected_files)

    tested = generate_file_list(paths_dict, modules_glob, include_auto)

    assert tested == expected_files

def test_generate_file_list_unused_glob():

    paths_dict = EXPECTED_DICT["kerberos"]

    modules_glob = {"kerberos", "unused_glob1", "unused_glob2", "kerb*"}

    with pytest.raises(ValueError) as excinfo:

        generate_file_list(paths_dict, modules_glob, True)

    assert "unused_glob1, unused_glob2" in str(excinfo.value)

    assert "kerb" not in str(excinfo.value)

@pytest.mark.parametrize(

    "path, expected",

    [

        ("foo/bar/baz.py", {"foo", "foo.bar", "foo.bar.baz"}),

        ("foo/bar.py", {"foo", "foo.bar"}),

        ("foo.py", {"foo"}),

        ("foo/bar.so.2", set()),

        ("foo.cpython-37m-x86_64-linux-gnu.so", {"foo"}),

        ("foo/_api/v2/__init__.py", set()),

        ("foo/__init__.py", {"foo"}),

        ("foo/_priv.py", set()),

        ("foo/_bar/lib.so", set()),

        ("foo/bar/baz.so", {"foo", "foo.bar", "foo.bar.baz"}),

        ("foo/bar/baz.pth", set()),

        ("foo/bar/baz.pyc", set()),

        ("def.py", set()),

        ("foo-bar/baz.py", set()),

        ("foobar/12baz.py", set()),

        ("foo/\nbar/baz.py", set()),

        ("foo/+bar/baz.py", set()),

        ("foo/__init__.cpython-39-x86_64-linux-gnu.so", {"foo"}),

        ("foo/bar/__pycache__/abc.cpython-37.pyc", set()),

    ],

)

def test_module_names_from_path(path, expected):

    tested = Path(path)

    assert module_names_from_path(tested) == expected

def default_options(output_files, output_modules, mock_root, pyproject_record):

    return [

        "--output-files",

        str(output_files),

        "--output-modules",

        str(output_modules),

        "--buildroot",

        str(mock_root),

        "--sitelib",

        str(SITELIB),

        "--sitearch",

        str(SITEARCH),

        "--python-version",

        "3.7",  # test data are for 3.7,

        "--pyproject-record",

        str(pyproject_record),

        "--prefix",

        str(PREFIX),

    ]

@pytest.mark.parametrize("include_auto", (True, False))

@pytest.mark.parametrize("package, glob, expected_files, expected_modules", EXPECTED_FILES)

def test_cli(tmp_path, package, glob, expected_files, expected_modules, include_auto, pyproject_record):

    prepare_pyproject_record(tmp_path, package)

    output_files = tmp_path / "files"

    output_modules = tmp_path / "modules"

    globs = [glob, "+auto"] if include_auto else [glob]

    cli_args = argparser().parse_args([*default_options(output_files, output_modules, tmp_path, pyproject_record), *globs])

    save_files_main(cli_args)

    if not include_auto:

        expected_files = remove_others(expected_files)

    tested_files = output_files.read_text()

    assert tested_files == "\n".join(expected_files) + "\n"

    tested_modules = output_modules.read_text().split()

    assert tested_modules == expected_modules

def test_cli_no_pyproject_record(tmp_path, pyproject_record):

    output_files = tmp_path / "files"

    output_modules = tmp_path / "modules"

    cli_args = argparser().parse_args([*default_options(output_files, output_modules, tmp_path, pyproject_record), "tldr*"])

    with pytest.raises(FileNotFoundError):

        save_files_main(cli_args)

def test_cli_too_many_RECORDS(tldr_root, output_files, output_modules, pyproject_record):

    # Two calls to simulate how %pyproject_install process more than one RECORD file

    prepare_pyproject_record(tldr_root,

                             content=("foo/bar/dist-info/RECORD", []))

    prepare_pyproject_record(tldr_root,

                             content=("foo/baz/dist-info/RECORD", []))

    cli_args = argparser().parse_args([*default_options(output_files, output_modules, tldr_root, pyproject_record), "tldr*"])

    with pytest.raises(FileExistsError):

        save_files_main(cli_args)

def test_cli_bad_argument(tldr_root, output_files, output_modules, pyproject_record):

    cli_args = argparser().parse_args(

        [*default_options(output_files, output_modules, tldr_root, pyproject_record), "tldr*", "+foodir"]

    )

    with pytest.raises(ValueError):

        save_files_main(cli_args)

def test_cli_bad_option(tldr_root, output_files, output_modules, pyproject_record):

    prepare_pyproject_record(tldr_root.parent, content=("RECORD1", []))

    cli_args = argparser().parse_args(

        [*default_options(output_files, output_modules, tldr_root, pyproject_record), "tldr*", "you_cannot_have_this"]

    )

    with pytest.raises(ValueError):

        save_files_main(cli_args)

def test_cli_bad_namespace(tldr_root, output_files, output_modules, pyproject_record):

    cli_args = argparser().parse_args(

        [*default_options(output_files, output_modules, tldr_root, pyproject_record), "tldr.didntread"]

    )

    with pytest.raises(ValueError):

        save_files_main(cli_args)