"""
CLI definition.

"""
from . import pretty
from . import __doc__
from . import __version__
from . import cliparse


def _(text):
    """Normalize white space."""
    return ' '.join(text.strip().split())


desc = '%s <http://httpie.org>'
parser = cliparse.Parser(description=desc % __doc__.strip(),)
parser.add_argument('--version', action='version', version=__version__)


# Content type.
#############################################

group_type = parser.add_mutually_exclusive_group(required=False)
group_type.add_argument(
    '--json', '-j', action='store_true',
    help=_('''
        (default) Data items are serialized as a JSON object.
        The Content-Type and Accept headers
        are set to application/json (if not set via the command line).
    ''')
)
group_type.add_argument(
    '--form', '-f', action='store_true',
    help=_('''
        Data items are serialized as form fields.
        The Content-Type is set to application/x-www-form-urlencoded (if not specifid).
        The presence of any file fields results into a multipart/form-data request.
     ''')
)


# Output options.
#############################################

parser.add_argument(
    '--traceback', action='store_true', default=False,
    help=_('''
        Print exception traceback should one occur.
    ''')
)

prettify = parser.add_mutually_exclusive_group(required=False)
prettify.add_argument(
    '--pretty', dest='prettify', action='store_true',
    default=cliparse.PRETTIFY_STDOUT_TTY_ONLY,
    help=_('''
        If stdout is a terminal, the response is prettified
        by default (colorized and indented if it is JSON).
        This flag ensures prettifying even when stdout is redirected.
    ''')
)
prettify.add_argument(
    '--ugly', '-u', dest='prettify', action='store_false',
    help=_('''
        Do not prettify the response.
    ''')
)

output_options = parser.add_mutually_exclusive_group(required=False)
output_options.add_argument('--print', '-p', dest='output_options',
    default=cliparse.OUT_RESP_HEADERS + cliparse.OUT_RESP_BODY,
    help=_('''
        String specifying what should the output contain.
        "{request_headers}" stands for the request headers and
        "{request_body}" for the request body.
        "{response_headers}" stands for the response headers and
        "{response_body}" for response the body.
        Defaults to "hb" which means that the whole response
        (headers and body) is printed.
    '''.format(
        request_headers=cliparse.OUT_REQ_HEADERS,
        request_body=cliparse.OUT_REQ_BODY,
        response_headers=cliparse.OUT_RESP_HEADERS,
        response_body=cliparse.OUT_RESP_BODY,
    ))
)
output_options.add_argument(
    '--verbose', '-v', dest='output_options',
    action='store_const', const=''.join(cliparse.OUTPUT_OPTIONS),
    help=_('''
        Print the whole request as well as the response.
        Shortcut for --print={0}.
    '''.format(''.join(cliparse.OUTPUT_OPTIONS)))
)
output_options.add_argument(
    '--headers', '-t', dest='output_options',
    action='store_const', const=cliparse.OUT_RESP_HEADERS,
    help=_('''
        Print only the response headers.
        Shortcut for --print={0}.
    '''.format(cliparse.OUT_RESP_HEADERS))
)
output_options.add_argument(
    '--body', '-b', dest='output_options',
    action='store_const', const=cliparse.OUT_RESP_BODY,
    help=_('''
        Print only the response body.
        Shortcut for --print={0}.
    '''.format(cliparse.OUT_RESP_BODY))
)

parser.add_argument(
    '--style', '-s', dest='style', default='solarized', metavar='STYLE',
    choices=pretty.AVAILABLE_STYLES,
    help=_('''
        Output coloring style, one of %s. Defaults to solarized.
        For this option to work properly, please make sure that the
        $TERM environment variable is set to "xterm-256color" or similar
        (e.g., via `export TERM=xterm-256color' in your ~/.bashrc).
    ''') % ', '.join(sorted(pretty.AVAILABLE_STYLES))
)

# ``requests.request`` keyword arguments.
parser.add_argument(
    '--auth', '-a', help='username:password',
    type=cliparse.KeyValueType(cliparse.SEP_COMMON)
)

parser.add_argument(
    '--auth-type', choices=['basic', 'digest'],
    help=_('The authentication mechanism to be used. Defaults to "basic".')
)

parser.add_argument(
    '--verify', default='yes',
    help=_('''
        Set to "no" to skip checking the host\'s SSL certificate.
        You can also pass the  path to a CA_BUNDLE
        file for private certs. You can also set
        the REQUESTS_CA_BUNDLE  environment variable.
        Defaults to "yes".
    ''')
)
parser.add_argument(
    '--proxy', default=[], action='append',
    type=cliparse.KeyValueType(cliparse.SEP_COMMON),
    help=_('''
        String mapping protocol to the URL of the proxy
        (e.g. http:foo.bar:3128).
    ''')
)
parser.add_argument(
    '--allow-redirects', default=False, action='store_true',
    help=_('''
        Set this flag if full redirects are allowed
        (e.g. re-POST-ing of data at new ``Location``)
    ''')
)
parser.add_argument(
    '--timeout', type=float,
    help=_('''
        Float describes the timeout of the request
        (Use socket.setdefaulttimeout() as fallback).
    ''')
)


# Positional arguments.
#############################################

parser.add_argument(
    'method', metavar='METHOD',
    nargs='?',
    default=None,
    help=_('''
        The HTTP method to be used for the request
        (GET, POST, PUT, DELETE, PATCH, ...).
        If this argument is omitted, then HTTPie will guess the HTTP method.
        If there is some data to be sent, then it will be POST, otherwise GET.
    ''')
)
parser.add_argument(
    'url', metavar='URL',
    help=_('''
        The protocol defaults to http:// if the
        URL does not include one.
    ''')
)
parser.add_argument(
    'items', nargs='*',
    metavar='ITEM',
    type=cliparse.KeyValueType(
        cliparse.SEP_COMMON,
        cliparse.SEP_DATA,
        cliparse.SEP_DATA_RAW_JSON,
        cliparse.SEP_FILES
    ),
    help=_('''
        A key-value pair whose type is defined by the separator used. It can be an
        HTTP header (header:value),
        a data field to be used in the request body (field_name=value),
        a raw JSON data field (field_name:=value),
        or a file field (field_name@/path/to/file).
        You can use a backslash to escape a colliding separator in the field name.
    ''')
)