#!/usr/bin/env python3.4
# -*- coding: utf-8 -*-
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
 #the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import sys
import random, time
import os
from threading import Thread, Lock
import configparser
import argparse
from os import listdir
from os.path import isfile, join, isdir
import json

try:
    from elasticsearch import Elasticsearch, helpers
    from formatflowed import convertToWrapped
except:
    print("Sorry, you need to install the elasticsearch and formatflowed modules from pip first.")
    sys.exit(-1)
    

# Fetch config
config = configparser.RawConfigParser()
config.read('ponymail.cfg')

sourceLID = None
targetLID = None
wildcard = None
debug = False
notag = False
newdb = None

ssl = False
dbname = config.get("elasticsearch", "dbname")
if config.has_option("elasticsearch", "ssl") and config.get("elasticsearch", "ssl").lower() == 'true':
    ssl = True
uri = ""
if config.has_option("elasticsearch", "uri") and config.get("elasticsearch", "uri") != "":
    uri = config.get("elasticsearch", "uri")
es = Elasticsearch([
    {
        'host': config.get("elasticsearch", "hostname"),
        'port': int(config.get("elasticsearch", "port")),
        'use_ssl': ssl,
        'url_prefix': uri
    }],
    max_retries=5,
    retry_on_timeout=True
    )

rootURL = ""

parser = argparse.ArgumentParser(description='Command line options.')
parser.add_argument('--source', dest='source', type=str, nargs=1,
                   help='Source list to edit')
parser.add_argument('--rename', dest='target', type=str, nargs=1,
                   help='(optional) new list ID')
parser.add_argument('--newdb', dest='newdb', type=str, nargs=1,
                   help='(optional) new ES database name')
parser.add_argument('--wildcard', dest='glob', action='store_true', 
                   help='Allow wildcards in --source')
parser.add_argument('--notag', dest='notag', action='store_true', 
                   help='List IDs do not have <> in them')

args = parser.parse_args()

if args.source:
    sourceLID = args.source[0]
if args.target:
    targetLID = args.target[0]
if args.newdb:
    newdb = args.newdb[0]
if args.glob:
    wildcard = args.glob
if args.notag:
    notag = args.notag

    
if not sourceLID:
    print("No source list ID specified!")
    parser.print_help()
    sys.exit(-1)
if not (targetLID or newdb):
    print("Nothing to do! No target list ID or DB name specified")
    parser.print_help()
    sys.exit(-1)

sourceLID = ("%s" if notag else "<%s>")  % sourceLID.replace("@", ".").strip("<>")
if newdb and not targetLID:
    targetLID = sourceLID

if targetLID:
    targetLID = "<%s>" % targetLID.replace("@", ".").strip("<>")
    
print("Beginning list copy:")
print("  - List ID: %s" % sourceLID)
if targetLID:
    print("  - Target ID: %s" % targetLID)
if newdb:
    print("  - Target DB: %s" % newdb)

count = 0

    
if targetLID or newdb:
    print("Updating docs...")
    then = time.time()
    page = es.search(
        index=dbname,
        doc_type="mbox",
        scroll = '30m',
        search_type = 'scan',
        size = 100,
        body = {
            'query': {
                'bool': {
                    'must': [
                        {
                            'wildcard' if wildcard else 'term': {
                                'list_raw': sourceLID
                            }
                        }
                    ]
                }
            }
        }
        )
    sid = page['_scroll_id']
    scroll_size = page['hits']['total']
    js_arr = []
    while (scroll_size > 0):
        page = es.scroll(scroll_id = sid, scroll = '30m')
        sid = page['_scroll_id']
        scroll_size = len(page['hits']['hits'])
        for hit in page['hits']['hits']:
            doc = hit['_id']
            body = es.get(index = dbname, doc_type = 'mbox', id = doc)
            source = None
            try:
                source = es.get(index = dbname, doc_type = 'mbox_source', id = doc)
            except:
                print("Source for %s not found, hmm..." % doc)
            if targetLID:
                if not newdb:
                    body['list_raw'] = targetLID
                    body['list'] = targetLID
            js_arr.append({
                '_op_type': 'index',
                '_index': newdb if newdb else dbname,
                '_type': 'mbox',
                '_id': doc,
                '_source': body['_source']
            })
            if source:
                js_arr.append({
                    '_op_type': 'index',
                    '_index': newdb if newdb else dbname,
                    '_type': 'mbox_source',
                    '_id': doc,
                    '_source': source['_source']
                })
            
            count += 1
            if (count % 50 == 0):
                print("Processed %u emails..." % count)
                helpers.bulk(es, js_arr)
                js_arr = []
    
    if len(js_arr) > 0:
        helpers.bulk(es, js_arr)
                
    print("All done, processed %u docs in %u seconds" % (count, time.time() - then))