import sys

import pytest
import responses

from httpie.constants import UTF8
from httpie.output.formatters.xml import parse_xml, pretty_xml

from .fixtures import XML_FILES_PATH, XML_FILES_VALID, XML_FILES_INVALID
from .utils import http, URL_EXAMPLE

SAMPLE_XML_DATA = '<?xml version="1.0" encoding="utf-8"?><root><e>text</e></root>'


@pytest.mark.parametrize(
    'options, expected_xml',
    [
        ('xml.format:false', SAMPLE_XML_DATA),
        ('xml.indent:2', pretty_xml(parse_xml(SAMPLE_XML_DATA))),
        ('xml.indent:4', pretty_xml(parse_xml(SAMPLE_XML_DATA), indent=4)),
    ]
)
@responses.activate
def test_xml_format_options(options, expected_xml):
    responses.add(responses.GET, URL_EXAMPLE, body=SAMPLE_XML_DATA,
                  content_type='application/xml')

    r = http('--format-options', options, URL_EXAMPLE)
    assert expected_xml in r


@pytest.mark.parametrize('file', XML_FILES_VALID)
@responses.activate
def test_valid_xml(file):
    """Test XML formatter limits with data containing comments, doctypes
    and other XML-specific subtles.
    """
    if 'standalone' in file.stem and sys.version_info < (3, 9):
        pytest.skip('Standalone XML requires Python 3.9+')

    xml_data = file.read_text(encoding=UTF8)
    expected_xml_file = file.with_name(file.name.replace('_raw', '_formatted'))
    expected_xml_output = expected_xml_file.read_text(encoding=UTF8)
    responses.add(responses.GET, URL_EXAMPLE, body=xml_data,
                  content_type='application/xml')

    r = http(URL_EXAMPLE)
    assert expected_xml_output in r


@responses.activate
def test_xml_xhtml():
    """XHTML responses are handled by the XML formatter."""
    file = XML_FILES_PATH / 'xhtml' / 'xhtml_raw.xml'
    xml_data = file.read_text(encoding=UTF8)

    # Python < 3.8 was sorting attributes (https://bugs.python.org/issue34160)
    # so we have 2 different output expected given the Python version.
    expected_file_name = (
        'xhtml_formatted_python_less_than_3.8.xml'
        if sys.version_info < (3, 8)
        else 'xhtml_formatted.xml'
    )
    expected_xml_file = file.with_name(expected_file_name)
    expected_xml_output = expected_xml_file.read_text(encoding=UTF8)
    responses.add(responses.GET, URL_EXAMPLE, body=xml_data,
                  content_type='application/xhtml+xml')

    r = http(URL_EXAMPLE)
    assert expected_xml_output in r


@pytest.mark.parametrize('file', XML_FILES_INVALID)
@responses.activate
def test_invalid_xml(file):
    """Testing several problematic XML files, none should be formatted
    and none should make HTTPie to crash.
    """
    xml_data = file.read_text(encoding=UTF8)
    responses.add(responses.GET, URL_EXAMPLE, body=xml_data,
                  content_type='application/xml')

    # No formatting done, data is simply printed as-is
    r = http(URL_EXAMPLE)
    assert xml_data in r