import json
from pathlib import Path

import pika
import yaml

DEFAULT_CFG = """
rabbitmq:
  host: "localhost"
  port: 5672
  virtual_host: "/"
  username: "guest"
  password: "guest"

# Which *exchange* (topic) you actually want to listen to.
# The program will create a temporary queue, bind it to this exchange
# with the routing key supplied in `routing_key`.
subscriber:
  exchange: "nic"          # ← change to “reese” or any other exchange
  routing_key: "add"       # ← could be “add”, “delete”, or any pattern
"""

CONFIG_PATH = Path("active/device_unifi/config.yaml")
if not CONFIG_PATH.exists():
    CONFIG_PATH.write_text(DEFAULT_CFG)

with CONFIG_PATH.open() as f:
    cfg = yaml.safe_load(f)


cred = pika.PlainCredentials(cfg["rabbitmq"]["username"], cfg["rabbitmq"]["password"])
params = pika.ConnectionParameters(
    host=cfg["rabbitmq"]["host"],
    port=cfg["rabbitmq"]["port"],
    virtual_host=cfg["rabbitmq"]["virtual_host"],
    credentials=cred,
)

with pika.BlockingConnection(params) as c:
    ch = c.channel()
    ch.basic_publish(
        exchange="reese",
        routing_key="add",
        body=json.dumps({"msg": "hello nic add"}),
        properties=pika.BasicProperties(delivery_mode=2),  # make it persistent
    )