import click
from zope import component
from zope.interface.interfaces import IRegistered, IUtilityRegistration
import zope.component.event

from ceo_common.interfaces import IConfig
from ceod.transactions.members import UpdateMemberPositionsTransaction

from .utils import handle_sync_response, handle_stream_response, print_colon_kv
from ..utils import http_get, http_post

@click.group(short_help='List or change exec positions')
def positions():
    pass


@positions.command(short_help='Get current positions')
def get():
    resp = http_get('/api/positions')
    result = handle_sync_response(resp)
    print_colon_kv(result.items())


@positions.command(short_help='Update positions')
def update(**kwargs):
    click.echo('The positions will be updated:')
    print_colon_kv(kwargs.items())
    click.confirm('Do you want to continue?', abort=True)

    resp = http_post('/api/positions', json={k.replace('_', '-'): v for k, v in kwargs.items()})
    handle_stream_response(resp, UpdateMemberPositionsTransaction.operations)


# Provides dynamic parameter for update command using config file
@component.provideHandler
@component.adapter(IRegistered)
def _handler(event):
    global update

    if not (IUtilityRegistration.providedBy(event.object) and IConfig.providedBy(event.object.component)):
        return

    cfg = event.object.component
    avail = cfg.get('positions_available')
    required = cfg.get('positions_required')

    for pos in avail:
        update = click.option(f'--{pos}', metavar='USER', required=(pos in required))(update)