#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import asyncio
import sys
import threading
import requests
import json
from pathlib import Path
from slixmpp import ClientXMPP
import paho.mqtt.client as mqtt

BASE_DIR = Path(__file__).parent.resolve()
sys.path.insert(0, str(BASE_DIR))
from skills.loader import load_skills, run_skills

# ── CONFIG ───────────────────────────────────────────────────────────────
CONFIG_DIR  = BASE_DIR / "config"
CONFIG_FILE = CONFIG_DIR / "config.json"
PROMPT_FILE = CONFIG_DIR / "system_prompt.txt"

def load_config():
    with open(CONFIG_FILE, "r", encoding="utf-8") as f:
        return json.load(f)

def load_system_prompt():
    with open(PROMPT_FILE, "r", encoding="utf-8") as f:
        return f.read()

cfg           = load_config()
OLLAMA_URL    = cfg["ollama_url"]
MODEL         = cfg["model"]
XMPP_JID      = cfg["xmpp_jid"]
XMPP_PASS     = cfg["xmpp_pass"]
ADMIN_JID     = cfg["admin_jid"]
MQTT_HOST     = cfg["mqtt_host"]
MQTT_PORT     = int(cfg["mqtt_port"])
MQTT_CLIENT   = cfg["mqtt_client_id"]
MQTT_INBOX    = cfg["mqtt_inbox"]
MQTT_OUTBOX   = cfg["mqtt_outbox"]
SYSTEM_PROMPT = load_system_prompt()

load_skills()

conversation_history = []

# ── LLM ──────────────────────────────────────────────────────────────────
def call_ollama(messages: list) -> str:
    payload = {
        "model"   : MODEL,
        "messages": messages,
        "stream"  : False,
        "options" : {"temperature": 0.3}
    }
    response = requests.post(OLLAMA_URL, json=payload, timeout=180)
    return response.json()["message"]["content"]

def ask_llm(user_message: str, history: list = None) -> str:
    if history is None:
        history = conversation_history
    history.append({"role": "user", "content": user_message})
    messages = [{"role": "system", "content": SYSTEM_PROMPT}] + history
    try:
        MAX_STEPS = 5
        for _ in range(MAX_STEPS):
            reply = call_ollama(messages)
            skill_triggered, result = run_skills(reply)
            if not skill_triggered:
                history.append({"role": "assistant", "content": reply})
                return reply
            messages.append({"role": "assistant", "content": reply})
            messages.append({"role": "user",      "content": "[Résultat skill]\n" + result})
        reply = call_ollama(messages)
        history.append({"role": "assistant", "content": reply})
        return reply
    except Exception as e:
        err = "Erreur : " + str(e)
        history.append({"role": "assistant", "content": err})
        return err

# ── MQTT LISTENER ─────────────────────────────────────────────────────────
mqtt_publish_client = None

def mqtt_publish(topic: str, message: str):
    global mqtt_publish_client
    if mqtt_publish_client:
        mqtt_publish_client.publish(topic, message)

def register_to_agent1():
    """Publie une déclaration de mise en ligne sur agents/register."""
    import json as _json
    payload = _json.dumps({
        "agent"     : MQTT_CLIENT,
        "jid"       : XMPP_JID,
        "mqtt_inbox": MQTT_INBOX,
        "speciality": "Automatisation infrastructure via Ansible : playbooks, commandes ad-hoc, déploiement multi-hôtes, gestion de configuration sur le réseau local",
    })
    mqtt_publish("agents/register", payload)
    print("[REGISTER] Déclaration envoyée à agent1.")

def on_mqtt_message(client, userdata, msg):
    task = msg.payload.decode(errors="replace")
    print(f"[MQTT] Tâche reçue d'agent1 : {task[:100]}")
    # Historique isolé par tâche MQTT (pas mélangé avec XMPP)
    mqtt_history = []
    reply = ask_llm(task, history=mqtt_history)
    print(f"[MQTT] Réponse envoyée : {reply[:100]}")
    mqtt_publish(MQTT_OUTBOX, reply)

def start_mqtt_listener():
    global mqtt_publish_client

    # Client dédié à la publication
    import json as _json
    _status_topic = "agents/status/{}".format(MQTT_CLIENT)
    _offline_payload = _json.dumps({"status": "offline", "agent": MQTT_CLIENT})
    _online_payload  = _json.dumps({
        "status"    : "online",
        "agent"     : MQTT_CLIENT,
        "jid"       : XMPP_JID,
        "mqtt_inbox": MQTT_INBOX,
    })

    mqtt_publish_client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2,
                                      client_id=MQTT_CLIENT + "_pub")
    mqtt_publish_client.will_set(_status_topic, _offline_payload, retain=True)
    mqtt_publish_client.connect(MQTT_HOST, MQTT_PORT)
    mqtt_publish_client.loop_start()
    mqtt_publish_client.publish(_status_topic, _online_payload, retain=True)
    register_to_agent1()

    # Client dédié à la souscription
    sub_client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2,
                             client_id=MQTT_CLIENT + "_sub")
    sub_client.on_message = on_mqtt_message
    sub_client.connect(MQTT_HOST, MQTT_PORT)
    sub_client.subscribe(MQTT_INBOX)
    print(f"[MQTT] Écoute sur {MQTT_INBOX}")
    sub_client.loop_forever()

# ── BOT XMPP ─────────────────────────────────────────────────────────────
class AgentBot(ClientXMPP):
    def __init__(self):
        ClientXMPP.__init__(self, XMPP_JID, XMPP_PASS)
        self.add_event_handler("session_start", self.session_start)
        self.add_event_handler("message",       self.message)
        self.register_plugin('xep_0030')
        self.register_plugin('xep_0199')

    async def session_start(self, event):
        self.send_presence()
        await self.get_roster()
        self.send_message(mto=ADMIN_JID,
                          mbody="Agent2_Ansible en ligne !",
                          mtype='chat')

    async def message(self, msg):
        if msg['type'] not in ('chat', 'normal'):
            return
        if str(msg['from']).split('/')[0] != ADMIN_JID:
            return

        user_input = msg['body'].strip()

        if user_input == "!reset":
            conversation_history.clear()
            self.send_message(mto=ADMIN_JID,
                              mbody="Conversation reinitialisee.",
                              mtype='chat')
            return

        loop  = asyncio.get_event_loop()
        reply = await loop.run_in_executor(None, ask_llm, user_input)
        self.send_message(mto=ADMIN_JID, mbody=reply, mtype='chat')

# ── MAIN ─────────────────────────────────────────────────────────────────
if __name__ == "__main__":
    # Lancer le listener MQTT dans un thread séparé
    mqtt_thread = threading.Thread(target=start_mqtt_listener, daemon=True)
    mqtt_thread.start()

    # Lancer le bot XMPP
    bot = AgentBot()
    bot.connect()
    bot.loop.run_forever()