"""CLI argument parsing related tests."""
import json
# noinspection PyCompatibility
import argparse

import pytest

from httpie import input
from httpie.input import KeyValue, KeyValueArgType
from httpie import ExitStatus
from httpie.cli import parser
from utils import TestEnvironment, http, HTTP_OK
from fixtures import (
    FILE_PATH_ARG, JSON_FILE_PATH_ARG,
    JSON_FILE_CONTENT, FILE_CONTENT, FILE_PATH
)


class TestItemParsing:

    key_value = KeyValueArgType(*input.SEP_GROUP_ALL_ITEMS)

    def test_invalid_items(self):
        items = ['no-separator']
        for item in items:
            pytest.raises(argparse.ArgumentTypeError, self.key_value, item)

    def test_escape_separator(self):
        items = input.parse_items([
            # headers
            self.key_value(r'foo\:bar:baz'),
            self.key_value(r'jack\@jill:hill'),

            # data
            self.key_value(r'baz\=bar=foo'),

            # files
            self.key_value(r'bar\@baz@%s' % FILE_PATH_ARG),
        ])
        # `requests.structures.CaseInsensitiveDict` => `dict`
        headers = dict(items.headers._store.values())

        assert headers == {
            'foo:bar': 'baz',
            'jack@jill': 'hill',
        }
        assert items.data == {'baz=bar': 'foo'}
        assert 'bar@baz' in items.files

    @pytest.mark.parametrize(('string', 'key', 'sep', 'value'), [
        ('path=c:\windows', 'path', '=', 'c:\windows'),
        ('path=c:\windows\\', 'path', '=', 'c:\windows\\'),
        ('path\==c:\windows', 'path=', '=', 'c:\windows'),
    ])
    def test_backslash_before_non_special_character_does_not_escape(
            self, string, key, sep, value):
        expected = KeyValue(orig=string, key=key, sep=sep, value=value)
        actual = self.key_value(string)
        assert actual == expected

    def test_escape_longsep(self):
        items = input.parse_items([
            self.key_value(r'bob\:==foo'),
        ])
        assert items.params == {'bob:': 'foo'}

    def test_valid_items(self):
        items = input.parse_items([
            self.key_value('string=value'),
            self.key_value('header:value'),
            self.key_value('list:=["a", 1, {}, false]'),
            self.key_value('obj:={"a": "b"}'),
            self.key_value('eh:'),
            self.key_value('ed='),
            self.key_value('bool:=true'),
            self.key_value('file@' + FILE_PATH_ARG),
            self.key_value('query==value'),
            self.key_value('string-embed=@' + FILE_PATH_ARG),
            self.key_value('raw-json-embed:=@' + JSON_FILE_PATH_ARG),
        ])

        # Parsed headers
        # `requests.structures.CaseInsensitiveDict` => `dict`
        headers = dict(items.headers._store.values())
        assert headers == {'header': 'value', 'eh': ''}

        # Parsed data
        raw_json_embed = items.data.pop('raw-json-embed')
        assert raw_json_embed == json.loads(JSON_FILE_CONTENT)
        items.data['string-embed'] = items.data['string-embed'].strip()
        assert dict(items.data) == {
            "ed": "",
            "string": "value",
            "bool": True,
            "list": ["a", 1, {}, False],
            "obj": {"a": "b"},
            "string-embed": FILE_CONTENT,
        }

        # Parsed query string parameters
        assert items.params == {'query': 'value'}

        # Parsed file fields
        assert 'file' in items.files
        assert (items.files['file'][1].read().strip().decode('utf8')
                == FILE_CONTENT)


class TestQuerystring:
    def test_query_string_params_in_url(self, httpbin):
        r = http('--print=Hhb', 'GET', httpbin.url + '/get?a=1&b=2')
        path = '/get?a=1&b=2'
        url = httpbin.url + path
        assert HTTP_OK in r
        assert 'GET %s HTTP/1.1' % path in r
        assert '"url": "%s"' % url in r

    def test_query_string_params_items(self, httpbin):
        r = http('--print=Hhb', 'GET', httpbin.url + '/get', 'a==1')
        path = '/get?a=1'
        url = httpbin.url + path
        assert HTTP_OK in r
        assert 'GET %s HTTP/1.1' % path in r
        assert '"url": "%s"' % url in r

    def test_query_string_params_in_url_and_items_with_duplicates(self,
                                                                  httpbin):
        r = http('--print=Hhb', 'GET',
                 httpbin.url + '/get?a=1&a=1', 'a==1', 'a==1')
        path = '/get?a=1&a=1&a=1&a=1'
        url = httpbin.url + path
        assert HTTP_OK in r
        assert 'GET %s HTTP/1.1' % path in r
        assert '"url": "%s"' % url in r


class TestCLIParser:
    def test_expand_localhost_shorthand(self):
        args = parser.parse_args(args=[':'], env=TestEnvironment())
        assert args.url == 'http://localhost'

    def test_expand_localhost_shorthand_with_slash(self):
        args = parser.parse_args(args=[':/'], env=TestEnvironment())
        assert args.url == 'http://localhost/'

    def test_expand_localhost_shorthand_with_port(self):
        args = parser.parse_args(args=[':3000'], env=TestEnvironment())
        assert args.url == 'http://localhost:3000'

    def test_expand_localhost_shorthand_with_path(self):
        args = parser.parse_args(args=[':/path'], env=TestEnvironment())
        assert args.url == 'http://localhost/path'

    def test_expand_localhost_shorthand_with_port_and_slash(self):
        args = parser.parse_args(args=[':3000/'], env=TestEnvironment())
        assert args.url == 'http://localhost:3000/'

    def test_expand_localhost_shorthand_with_port_and_path(self):
        args = parser.parse_args(args=[':3000/path'], env=TestEnvironment())
        assert args.url == 'http://localhost:3000/path'

    def test_dont_expand_shorthand_ipv6_as_shorthand(self):
        args = parser.parse_args(args=['::1'], env=TestEnvironment())
        assert args.url == 'http://::1'

    def test_dont_expand_longer_ipv6_as_shorthand(self):
        args = parser.parse_args(
            args=['::ffff:c000:0280'],
            env=TestEnvironment()
        )
        assert args.url == 'http://::ffff:c000:0280'

    def test_dont_expand_full_ipv6_as_shorthand(self):
        args = parser.parse_args(
            args=['0000:0000:0000:0000:0000:0000:0000:0001'],
            env=TestEnvironment()
        )
        assert args.url == 'http://0000:0000:0000:0000:0000:0000:0000:0001'


class TestArgumentParser:

    def setup_method(self, method):
        self.parser = input.Parser()

    def test_guess_when_method_set_and_valid(self):
        self.parser.args = argparse.Namespace()
        self.parser.args.method = 'GET'
        self.parser.args.url = 'http://example.com/'
        self.parser.args.items = []
        self.parser.args.ignore_stdin = False

        self.parser.env = TestEnvironment()

        self.parser._guess_method()

        assert self.parser.args.method == 'GET'
        assert self.parser.args.url == 'http://example.com/'
        assert self.parser.args.items == []

    def test_guess_when_method_not_set(self):
        self.parser.args = argparse.Namespace()
        self.parser.args.method = None
        self.parser.args.url = 'http://example.com/'
        self.parser.args.items = []
        self.parser.args.ignore_stdin = False
        self.parser.env = TestEnvironment()

        self.parser._guess_method()

        assert self.parser.args.method == 'GET'
        assert self.parser.args.url == 'http://example.com/'
        assert self.parser.args.items == []

    def test_guess_when_method_set_but_invalid_and_data_field(self):
        self.parser.args = argparse.Namespace()
        self.parser.args.method = 'http://example.com/'
        self.parser.args.url = 'data=field'
        self.parser.args.items = []
        self.parser.args.ignore_stdin = False
        self.parser.env = TestEnvironment()
        self.parser._guess_method()

        assert self.parser.args.method == 'POST'
        assert self.parser.args.url == 'http://example.com/'
        assert self.parser.args.items == [
            KeyValue(key='data',
                     value='field',
                     sep='=',
                     orig='data=field')
        ]

    def test_guess_when_method_set_but_invalid_and_header_field(self):
        self.parser.args = argparse.Namespace()
        self.parser.args.method = 'http://example.com/'
        self.parser.args.url = 'test:header'
        self.parser.args.items = []
        self.parser.args.ignore_stdin = False

        self.parser.env = TestEnvironment()

        self.parser._guess_method()

        assert self.parser.args.method == 'GET'
        assert self.parser.args.url == 'http://example.com/'
        assert self.parser.args.items, [
            KeyValue(key='test',
                     value='header',
                     sep=':',
                     orig='test:header')
        ]

    def test_guess_when_method_set_but_invalid_and_item_exists(self):
        self.parser.args = argparse.Namespace()
        self.parser.args.method = 'http://example.com/'
        self.parser.args.url = 'new_item=a'
        self.parser.args.items = [
            KeyValue(
                key='old_item', value='b', sep='=', orig='old_item=b')
        ]
        self.parser.args.ignore_stdin = False

        self.parser.env = TestEnvironment()

        self.parser._guess_method()

        assert self.parser.args.items, [
            KeyValue(key='new_item', value='a', sep='=', orig='new_item=a'),
            KeyValue(
                key='old_item', value='b', sep='=', orig='old_item=b'),
        ]


class TestNoOptions:

    def test_valid_no_options(self, httpbin):
        r = http('--verbose', '--no-verbose', 'GET', httpbin.url + '/get')
        assert 'GET /get HTTP/1.1' not in r

    def test_invalid_no_options(self, httpbin):
        r = http('--no-war', 'GET', httpbin.url + '/get',
                 error_exit_ok=True)
        assert r.exit_status == 1
        assert 'unrecognized arguments: --no-war' in r.stderr
        assert 'GET /get HTTP/1.1' not in r


class TestIgnoreStdin:

    def test_ignore_stdin(self, httpbin):
        with open(FILE_PATH) as f:
            env = TestEnvironment(stdin=f, stdin_isatty=False)
            r = http('--ignore-stdin', '--verbose', httpbin.url + '/get',
                     env=env)
        assert HTTP_OK in r
        assert 'GET /get HTTP' in r, "Don't default to POST."
        assert FILE_CONTENT not in r, "Don't send stdin data."

    def test_ignore_stdin_cannot_prompt_password(self, httpbin):
        r = http('--ignore-stdin', '--auth=no-password', httpbin.url + '/get',
                 error_exit_ok=True)
        assert r.exit_status == ExitStatus.ERROR
        assert 'because --ignore-stdin' in r.stderr