#!/bin/env python
from mailmanclient import Client

# This program dumps all the user deails
# from a given email list into json outputself.
# The output json can then be taken as input and

import os
import sys
import time
import argparse

try:
    import json
except ImportError:
    import simplejson as json

def get_ml_fqdns(client):
    ml_fqdns = []
    for mlist in client.lists:
        ml_fqdns.append(mlist.fqdn_listname)
    return ml_fqdns

def dump_fqdn_members(client,ml_fqdn ):

    """Prints the members of a email list"""
    # Get members from email list
    member_list = client.get_list(ml_fqdn)
    members_hash = {}
    members_hash['members'] = []

    # Get json data from each member
    for member in member_list.members:
        prefs = member.preferences # obtain member prrivilges

        members_hash['members'].append({
            'list_fqdn': args.list_fqdn,
            'email': member.email,
            'display_name': member.user.display_name,
            #'password': member.user.password,
            'preferences': {'delivery_mode':  prefs['delivery_mode'],
                            'acknowledge_posts': prefs['acknowledge_posts'],
                            'delivery_status': prefs['delivery_status'],
                            'hide_address': prefs['hide_address'],
                            'preferred_language': prefs['preferred_language'],
                            'receive_list_copy': prefs['receive_list_copy'],
                            'receive_own_postings': prefs['receive_own_postings']
                            }
        })
        #print json.dumps(member.user.rest_data, indent=2)
    print json.dumps(members_hash, indent=2)
# end dump_fqdn_memberss

def restore_members( members_file ):

    """Creates Code to Restore Members of a source/target email list."""

    tgt_list = None #email list of target members

    if members_file == '-':
        json_file = sys.stdin
    else:
        with open(members_file) as json_file:
            data = json.load(json_file)
            # subscribe members from source into target
            for src_member in data['members']:
                # get target the email list
                if (tgt_list is None):
                    tgt_list = client.get_list(src_member['list_fqdn'])
                    # Get members from the current email list
                    tgt_members = [str(tgt_member.email) for tgt_member in tgt_list.members]
                if src_member['email'] not in tgt_members:
                    # check on display_name is null or not
                    if( src_member['display_name'] is not None):
                        display_name = src_member['display_name']
                    else:
                        display_name = 'display_name=None'

                    # subscribe member to list
                    tgt_list.subscribe(src_member['email'],
                                       display_name,
                                       pre_verified=True,
                                       pre_confirmed=True,
                                       pre_approved=True)


                # set the preferences
                tgt_prefs = tgt_list.get_member(src_member['email']).preferences
                # tgt_prefs['delivery_mode'] =  src_member['preferences']['delivery_mode']
                # tgt_prefs['acknowledge_posts'] = src_member['preferences']['acknowledge_posts']
                # tgt_prefs['delivery_status'] = src_member['preferences']['delivery_status']
                # tgt_prefs['hide_address'] = src_member['preferences']['hide_address']
                # tgt_prefs['preferred_language'] = src_member['preferences']['preferred_language']
                # tgt_prefs['receive_list_copy'] = src_member['preferences']['receive_list_copy']
                # tgt_prefs['receive_own_postings'] = src_member['preferences']['receive_own_postings']
                tgt_prefs.save()
                #print('email: '+ src_member['email'])
                #print('password: '+ member['password'])
                #new_member_list.append(member_email)
    if members_file != '-':
        json_file.close()
#end restore_members

if __name__ == '__main__':
    parser = argparse.ArgumentParser(description="Manage Users in Mailman Email Lists.")

    CORE_URI = os.environ.get('MAILMAN_CORE_URI',
                              'http://mailman-core:8001/3.1')
    CORE_USER = os.environ.get('MAILMAN_REST_USER', 'restadmin')
    CORE_PASS = os.environ.get('MAILMAN_REST_PASSWORD', 'restpass')
    # Default Email list
    LIST_NAME = 'apachesvn@lists.med.stanford.edu'

    # user invoked variables
    parser.add_argument('-l','--list-fqdn')
    parser.add_argument('-r','--restore')
    # Add arguments for env variables
    parser.add_argument('--core-uri', dest='core_uri', default=CORE_URI)
    parser.add_argument('--rest-user', dest='core_user', default=CORE_USER)
    parser.add_argument('--rest-password', dest='core_password', default=CORE_PASS)


    # Parse out the command line arguments
    args = parser.parse_args()

    # Set the mailman client
    client = Client(args.core_uri, args.core_user, args.core_password)

    # append the mail lists to an array from client
    ml_fqdns = get_ml_fqdns(client)

    # lists members of a list
    if args.list_fqdn:
        # used to store members
        ml_fqdn = args.list_fqdn

        # get members from list
        if ml_fqdn in ml_fqdns:
            dump_fqdn_members(client,ml_fqdn)
        else:
            sys.exit('Error: Email list"'+ml_fqdn+'" does not exist in domain '+args.core_uri +
                     "\nSee List\n"+str(ml_fqdns))
    #end if
    elif args.restore:
        restore_members( args.restore)