pleroma2nip05/src/app.py

#!/bin/env python3

# Pleroma2nip05: Server nip05 users for Pleroma users
# AGPL v3.0 or later licensed
# Copyright (C) Taurix IT 2023

import json
from flask import Flask, jsonify
import yaml
import psycopg2
import psycopg2.extras
from datetime import datetime

__VERSION__ = '1.0.0'

app = Flask('app')
print("Pleroma2nip05 v%s" % (__VERSION__))

with open(r'/etc/pleroma2nip05/config.yml') as configfile:
    config = yaml.load(configfile, Loader=yaml.FullLoader)

# https://<domain>/.well-known/nostr.json

try:
    # Connect to an existing database
    connection = psycopg2.connect(user=config.get('pguser'),
                                  password=config.get('pgpass'),
                                  host=config.get('pghost'),
                                  database=config.get('pleromadb'))

    cursor = connection.cursor(cursor_factory = psycopg2.extras.RealDictCursor)
    print("PostgreSQL server information")
    print(connection.get_dsn_parameters(), "\n")


except (Exception, Error) as error:
    print("Error while connecting to PostgreSQL", error)


# Get local users only
userquery = "SELECT nickname, fields FROM users WHERE nickname NOT LIKE '%@%';"
relays = [ "wss://relay.rebelbase.site" , "wss://nostr-pub.wellorder.net" , "wss://relay.orangepill.dev", "wss://relay.shitforce.one" ]
lastupdate = None
localusers = None

@app.route("/json")
def get_json():
    global lastupdate
    global localusers
    global userquery
    global userquery

    print(lastupdate)
    now = datetime.now()
    if lastupdate is not None:
        diff = (now - lastupdate)
        age = diff.total_seconds()
    else:
        age = 9999999

    if age > int(config.get('ttl')):
        print('From DB')
        cursor.execute(userquery)
        localusers = cursor.fetchall()
        lastupdate = now
    else:
        print('From cache')

    nostr = {}
    nostr['names'] = {}
    nostr['relays'] = {}

    if localusers is not None:
        for user in localusers:
            if user['nickname'] == 'gvs':
                if user.get('fields') is not None:
                    for field in user.get('fields'):
                        if field.get('name').lower() == 'nostr':
                            nostr['names'][user['nickname']] = field.get('value')
                            nostr['relays'][field.get('value')] = relays

    # print(json.dumps(nostr))
    return json.dumps(nostr)