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# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
# vim: set filetype=python:
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.


@template
def keyfile(desc, help=None, callback=lambda x: x):
    help = help or ('Use the secret key contained in the given keyfile '
                    'for %s requests' % desc)
    name = desc.lower().replace(' ', '-')
    no_key = callback('no-%s-key' % name)

    option('--with-%s-keyfile' % name, nargs=1, help=help)

    @depends('--with-%s-keyfile' % name)
    @checking('for the %s key' % desc, lambda x: x and x is not no_key)
    @imports(_from='__builtin__', _import='open')
    @imports(_from='__builtin__', _import='IOError')
    def keyfile(value):
        if value:
            try:
                with open(value[0]) as fh:
                    result = fh.read().strip()
                    if result:
                        return callback(result)
                    raise FatalCheckError("'%s' is empty." % value[0])
            except IOError as e:
                raise FatalCheckError("'%s': %s." % (value[0], e.strerror))
        return no_key

    return keyfile


@template
def simple_keyfile(desc):
    value = keyfile(desc)
    set_config('MOZ_%s_KEY' % desc.upper().replace(' ', '_'), value)
    # Only really required for MOZ_ADJUST_SDK_KEY currently still used in
    # old-configure.
    add_old_configure_assignment('MOZ_%s_KEY' % desc.upper().replace(' ', '_'),
                                 value)


@template
def id_and_secret_keyfile(desc):
    def id_and_secret(value):
        if value.startswith('no-') and value.endswith('-key'):
            id = value[:-3] + 'clientid'
            secret = value
        elif ' ' in value:
            id, secret = value.split(' ', 1)
        else:
            raise FatalCheckError('%s key file has an invalid format.' % desc)
        return namespace(
            id=id,
            secret=secret,
        )

    content = keyfile(desc, help='Use the client id and secret key contained '
                                 'in the given keyfile for %s requests' % desc,
                      callback=id_and_secret)


    name = desc.upper().replace(' ', '_')
    set_config('MOZ_%s_CLIENTID' % name, delayed_getattr(content, 'id'))
    set_config('MOZ_%s_KEY' % name, delayed_getattr(content, 'secret'))