#!/usr/bin/env python3
import json
import argparse
import os
import sys

parser = argparse.ArgumentParser()

parser.add_argument('-n', '--nodesjson', action='store',
                  help='old nodes.json file you want to read firstseen from',required=True)

parser.add_argument('-s', '--state', action='store',
                  help='state.json you want to store',required=True)

args = parser.parse_args()
options = vars(args)

oldnodes_fn = os.path.realpath(options['nodesjson'])
newnodes_fn = os.path.realpath(options['state'])

with open(oldnodes_fn, 'r', encoding=('UTF-8')) as oldnodedb_handle:
    oldnodedb = json.load(oldnodedb_handle)
with open(newnodes_fn, 'r', encoding=('UTF-8')) as newnodedb_handle:
    newnodedb = json.load(newnodedb_handle)

count = 0
if oldnodedb['version'] == 1:
    for nodeid, node in newnodedb['nodes'].items():
        for oldnodeid, oldnode in oldnodedb['nodes'].items():
            if oldnodeid == nodeid:
                node['firstseen'] = "{}+0100".format(oldnode['firstseen'])
                count+=1

if oldnodedb['version'] == 2:
    for nodeid, node in newnodedb['nodes'].items():
        for oldnode in oldnodedb['nodes']:
            if oldnode['nodeinfo']['node_id'] == nodeid:
                node['firstseen'] = "{}+0100".format(oldnode['firstseen'])
                count+=1

with open(newnodes_fn, 'w') as f:
    json.dump(newnodedb, f)

print('firstseen updated on %d nodes' % count)