from typing import List, Dict

import requests
from zope import component

from ceo_common.interfaces import IHTTPClient, IConfig


def http_request(method: str, path: str, **kwargs) -> requests.Response:
    client = component.getUtility(IHTTPClient)
    cfg = component.getUtility(IConfig)
    if path.startswith('/api/db'):
        host = cfg.get('ceod_database_host')
        delegate = False
    else:
        host = cfg.get('ceod_admin_host')
        # The forwarded TGT is only needed for endpoints which write to LDAP
        delegate = method != 'GET'
    return client.request(
        host, path, method, delegate=delegate, stream=True, **kwargs)


def http_get(path: str, **kwargs) -> requests.Response:
    return http_request('GET', path, **kwargs)


def http_post(path: str, **kwargs) -> requests.Response:
    return http_request('POST', path, **kwargs)


def http_patch(path: str, **kwargs) -> requests.Response:
    return http_request('PATCH', path, **kwargs)


def http_delete(path: str, **kwargs) -> requests.Response:
    return http_request('DELETE', path, **kwargs)


def get_failed_operations(data: List[Dict]) -> List[str]:
    """
    Get a list of the failed operations using the JSON objects
    streamed from the server.
    """
    prefix = 'failed_to_'
    failed = []
    for d in data:
        if 'operation' not in d:
            continue
        operation = d['operation']
        if not operation.startswith(prefix):
            continue
        operation = operation[len(prefix):]
        if ':' in operation:
            # sometimes the operation looks like
            # "failed_to_do_something: error message"
            operation = operation[:operation.index(':')]
        failed.append(operation)
    return failed