import configparser
import io
import os
import re

from unittest import mock

import py

from aurweb import config
from aurweb.scripts.config import main


def noop(*args, **kwargs) -> None:
    return


def test_get():
    assert config.get("options", "disable_http_login") == "0"


def test_getboolean():
    assert not config.getboolean("options", "disable_http_login")


def test_getint():
    assert config.getint("options", "disable_http_login") == 0


def mock_config_get():
    config_get = config.get

    def _mock_config_get(section: str, option: str):
        if section == "options":
            if option == "salt_rounds":
                return "666"
        return config_get(section, option)
    return _mock_config_get


@mock.patch("aurweb.config.get", side_effect=mock_config_get())
def test_config_main_get(get: str):
    stdout = io.StringIO()
    args = ["aurweb-config", "get", "options", "salt_rounds"]
    with mock.patch("sys.argv", args):
        with mock.patch("sys.stdout", stdout):
            main()

    expected = "666"
    assert stdout.getvalue().strip() == expected


@mock.patch("aurweb.config.get", side_effect=mock_config_get())
def test_config_main_get_unknown_section(get: str):
    stderr = io.StringIO()
    args = ["aurweb-config", "get", "fakeblahblah", "salt_rounds"]
    with mock.patch("sys.argv", args):
        with mock.patch("sys.stderr", stderr):
            main()

    # With an invalid section, we should get a usage error.
    expected = r'^error: no section found$'
    assert re.match(expected, stderr.getvalue().strip())


@mock.patch("aurweb.config.get", side_effect=mock_config_get())
def test_config_main_get_unknown_option(get: str):
    stderr = io.StringIO()
    args = ["aurweb-config", "get", "options", "fakeblahblah"]
    with mock.patch("sys.argv", args):
        with mock.patch("sys.stderr", stderr):
            main()

    expected = "error: no option found"
    assert stderr.getvalue().strip() == expected


@mock.patch("aurweb.config.save", side_effect=noop)
def test_config_main_set(save: None):
    data = None

    def set_option(section: str, option: str, value: str) -> None:
        nonlocal data
        data = value

    args = ["aurweb-config", "set", "options", "salt_rounds", "666"]
    with mock.patch("sys.argv", args):
        with mock.patch("aurweb.config.set_option", side_effect=set_option):
            main()

    expected = "666"
    assert data == expected


def test_config_main_set_real(tmpdir: py.path.local):
    """
    Test a real set_option path.
    """

    # Copy AUR_CONFIG to {tmpdir}/aur.config.
    aur_config = os.environ.get("AUR_CONFIG")
    tmp_aur_config = os.path.join(str(tmpdir), "aur.config")
    with open(aur_config) as f:
        with open(tmp_aur_config, "w") as o:
            o.write(f.read())

    # Force reset the parser. This should NOT be done publicly.
    config._parser = None

    value = 666
    args = ["aurweb-config", "set", "options", "fake-key", str(value)]
    with mock.patch.dict("os.environ", {"AUR_CONFIG": tmp_aur_config}):
        with mock.patch("sys.argv", args):
            # Run aurweb.config.main().
            main()

        # Update the config; fake-key should be set.
        config.rehash()
        assert config.getint("options", "fake-key") == 666

        # Restore config back to normal.
        args = ["aurweb-config", "unset", "options", "fake-key"]
        with mock.patch("sys.argv", args):
            main()

    # Return the config back to normal.
    config.rehash()

    # fake-key should no longer exist.
    assert config.getint("options", "fake-key") is None


def test_config_main_set_immutable():
    data = None

    def mock_set_option(section: str, option: str, value: str) -> None:
        nonlocal data
        data = value

    args = ["aurweb-config", "set", "options", "salt_rounds", "666"]
    with mock.patch.dict(os.environ, {"AUR_CONFIG_IMMUTABLE": "1"}):
        with mock.patch("sys.argv", args):
            with mock.patch("aurweb.config.set_option",
                            side_effect=mock_set_option):
                main()

    expected = None
    assert data == expected


def test_config_main_set_invalid_value():
    stderr = io.StringIO()

    args = ["aurweb-config", "set", "options", "salt_rounds"]
    with mock.patch("sys.argv", args):
        with mock.patch("sys.stderr", stderr):
            main()

    expected = "error: no value provided"
    assert stderr.getvalue().strip() == expected


@ mock.patch("aurweb.config.save", side_effect=noop)
def test_config_main_set_unknown_section(save: None):
    stderr = io.StringIO()

    def mock_set_option(section: str, option: str, value: str) -> None:
        raise configparser.NoSectionError(section=section)

    args = ["aurweb-config", "set", "options", "salt_rounds", "666"]
    with mock.patch("sys.argv", args):
        with mock.patch("sys.stderr", stderr):
            with mock.patch("aurweb.config.set_option",
                            side_effect=mock_set_option):
                main()

    assert stderr.getvalue().strip() == "error: no section found"