import copy

from flask import g

from crc import app
from crc.api.common import ApiError
from crc.scripts.script import Script
from crc.services.ldap_service import LdapService
from crc.services.user_service import UserService


class Ldap(Script):
    """This Script allows to be introduced as part of a workflow and called from there, taking
    a UID (or several) as input and looking it up through LDAP to return the person's details.
    If no user id is specified, returns information about the current user."""

    def get_description(self):
        return """Attempts to create a dictionary with person details, using the
provided argument (a UID) and look it up through LDAP.  If no UID is
provided, then returns information about the current user.

Examples:
supervisor_info = ldap(supervisor_uid)   // Sets the supervisor information to ldap details for the given uid.
"""

    def do_task_validate_only(self, task, study_id, workflow_id, *args, **kwargs):
        return {
            "display_name": "John Smith",
            "given_name": "Johnismidges Ego Smithogglesnots",
            "email_address": "jes@ogglesnots.org",
            "telephone_number": "540-457-0023",
            "title": "Prodigious Experilisious Emeritus Eqs.",
            "department": "Department of Cheese and Fungus Combustibles",
            "affiliation": "Not really",
            "sponsor_type": "Department of Fungus",
            "uid": "jes42",
            "proper_name": "Smith"
        }

    def do_task(self, task, study_id, workflow_id, *args, **kwargs):
        return self.set_users_info_in_task(task, args)

    def set_users_info_in_task(self, task, args):
        if len(args) > 1:
            raise ApiError(code="invalid_argument",
                           message="Ldap takes at most one argument, the "
                                   "UID for the person we want to look up.")
        if len(args) < 1:
            if UserService.has_user():
                uid = UserService.current_user().uid
        else:
            uid = args[0]

        try:
            user_info = LdapService.user_info(uid)
        except ApiError as ae:
            app.logger.info(ae)
            return {}
        except Exception as e:
            app.logger.info(e)
            return {}
        else:
            user_info_dict = {
                "display_name": user_info.display_name,
                "given_name": user_info.given_name,
                "email_address": user_info.email_address,
                "telephone_number": user_info.telephone_number,
                "title": user_info.title,
                "department": user_info.department,
                "affiliation": user_info.affiliation,
                "sponsor_type": user_info.sponsor_type,
                "uid": user_info.uid,
                "proper_name": user_info.proper_name()
            }
            return user_info_dict