# -*- coding: utf-8 -*-
"""
通信中间件框架 - 完整使用示例
演示：工厂创建、发布、订阅、对比三种协议
"""

import asyncio
import logging

from adapters.dds_adapter import DDSAdapterComm
from adapters.kafka_adapter import KafkaAdapterComm
# ── 注册所有内置适配器 ─────────────────────────────────────────────
from adapters.redis_adapter import RedisAdapterComm
from uas.comm.factory import CommAdapterFactory
from uas.comm.message import Message, MessagePriority

CommAdapterFactory.register("redis", RedisAdapterComm)
CommAdapterFactory.register("kafka", KafkaAdapterComm)
CommAdapterFactory.register("dds", DDSAdapterComm)

# ── 日志配置 ──────────────────────────────────────────────────────
logging.basicConfig(
    level  = logging.INFO,
    format = "%(asctime)s [%(levelname)s] %(name)s - %(message)s",
)
logger = logging.getLogger("main")


# ─────────────────────────────────────────────────────────────────
# 消息处理回调
# ─────────────────────────────────────────────────────────────────

async def on_aircraft_status(msg: Message):
    logger.info(f"🛩️  收到飞行状态 | {msg.topic} | {msg.payload}")

async def on_alert(msg: Message):
    logger.warning(f"🚨 告警消息 | priority={msg.priority.name} | {msg.payload}")

def on_telemetry_sync(msg: Message):
    """同步处理器也被支持"""
    logger.info(f"📡 遥测数据 (sync) | {msg.payload}")


# ─────────────────────────────────────────────────────────────────
# 示例 1：Redis
# ─────────────────────────────────────────────────────────────────

async def demo_redis():
    url = "redis://:mypassword@127.0.0.1:6379/0?socket_timeout=5"
    logger.info(f"\n{'═'*55}\n  Redis 示例  url={url}\n{'═'*55}")

    async with CommAdapterFactory.create(url) as adapter:
        # 订阅
        await adapter.subscribe("aircraft/status", on_aircraft_status)
        await adapter.subscribe("aircraft/alert",  on_alert)

        # 发布
        await adapter.publish(Message(
            topic   = "aircraft/status",
            payload = {"id": "F-22", "speed": 2414, "altitude": 15000},
        ))
        await adapter.publish(Message(
            topic    = "aircraft/alert",
            payload  = {"code": "E001", "msg": "发动机温度过高"},
            priority = MessagePriority.URGENT,
        ))

        await asyncio.sleep(0.5)   # 等待消息到达


# ─────────────────────────────────────────────────────────────────
# 示例 2：Kafka
# ─────────────────────────────────────────────────────────────────

async def demo_kafka():
    url = "kafka://broker:9092/flight-group?auto_offset_reset=earliest&acks=all"
    logger.info(f"\n{'═'*55}\n  Kafka 示例  url={url}\n{'═'*55}")

    async with CommAdapterFactory.create(url) as adapter:
        await adapter.subscribe("telemetry", on_telemetry_sync)

        await adapter.publish(Message(
            topic   = "telemetry",
            payload = {"aircraft": "J-20", "lat": 39.9, "lon": 116.4, "alt": 20000},
            headers = {"source": "radar-01"},
        ))

        await asyncio.sleep(1.0)


# ─────────────────────────────────────────────────────────────────
# 示例 3：DDS
# ─────────────────────────────────────────────────────────────────

async def demo_dds():
    url = "dds://0@localhost:7400/rt?reliability=RELIABLE&durability=TRANSIENT_LOCAL"
    logger.info(f"\n{'═'*55}\n  DDS 示例  url={url}\n{'═'*55}")

    async with CommAdapterFactory.create(url) as adapter:
        await adapter.subscribe("command/fire", on_alert)

        await adapter.publish(Message(
            topic   = "command/fire",
            payload = {"weapon": "AIM-120", "target": "T001"},
            priority = MessagePriority.HIGH,
        ))

        await asyncio.sleep(0.3)


# ─────────────────────────────────────────────────────────────────
# 示例 4：扩展新协议（MQTT）
# ─────────────────────────────────────────────────────────────────

async def demo_extend_mqtt():
    """
    演示如何在运行时注册新协议，无需修改框架代码
    只需实现 CommBaseAdapter 子类并调用 register()
    """
    from uas.comm.base import CommBaseAdapter, MessageHandler
    from uas.comm.message import Message

    class MqttAdapter(CommBaseAdapter):
        """MQTT 适配器骨架（实际使用 aiomqtt 库）"""
        async def connect(self):
            self._running = True
            self.logger.info(f"[MQTT] 连接到 {self.config.host}:{self.config.port}")
        async def disconnect(self):
            self._running = False
        async def publish(self, message: Message) -> bool:
            self.logger.info(f"[MQTT] 发布 {message.topic}: {message.payload}")
            return True
        async def subscribe(self, topic: str, handler: MessageHandler):
            self._register_handler(topic, handler)
            self.logger.info(f"[MQTT] 订阅 {topic}")
        async def unsubscribe(self, topic: str):
            self._handlers.pop(topic, None)

    # 动态注册
    CommAdapterFactory.register("mqtt", MqttAdapter)

    url = "mqtt://broker.hivemq.com:1883/aircraft?qos=1"
    async with CommAdapterFactory.create(url) as adapter:
        await adapter.subscribe("sensor/+/temp", on_telemetry_sync)
        await adapter.publish(Message(
            topic   = "sensor/001/temp",
            payload = {"temp": 85.3},
        ))

    logger.info(f"当前已注册协议: {CommAdapterFactory.available_schemes()}")


# ─────────────────────────────────────────────────────────────────
# 主入口
# ─────────────────────────────────────────────────────────────────

async def main():
    # 注意：Redis/Kafka 需要真实服务，DDS 在无 cyclonedds 时自动降级为模拟模式
    # await demo_redis()
    # await demo_kafka()
    await demo_dds()
    await demo_extend_mqtt()

if __name__ == "__main__":
    asyncio.run(main())