# /home/Autopartes/pos/blueprints/whatsapp_bp.py
"""WhatsApp via Baileys Bridge.

Endpoints:
  GET  /pos/api/whatsapp/status    -- Connection status
  GET  /pos/api/whatsapp/qr        -- Get QR code
  POST /pos/api/whatsapp/connect   -- Start connection
  POST /pos/api/whatsapp/logout    -- Disconnect
  POST /pos/api/whatsapp/webhook   -- Receive messages (public)
  POST /pos/api/whatsapp/send      -- Send message
  GET  /pos/api/whatsapp/conversations -- List conversations
"""

from flask import Blueprint, request, jsonify, g
from middleware import require_auth
from tenant_db import get_tenant_conn
from services import whatsapp_service

whatsapp_bp = Blueprint('whatsapp', __name__, url_prefix='/pos/api/whatsapp')


@whatsapp_bp.route('/status', methods=['GET'])
@require_auth()
def status():
    return jsonify(whatsapp_service.get_status())


@whatsapp_bp.route('/qr', methods=['GET'])
@require_auth()
def qr():
    return jsonify(whatsapp_service.get_qr())


@whatsapp_bp.route('/connect', methods=['POST'])
@require_auth()
def connect():
    return jsonify(whatsapp_service.connect())


@whatsapp_bp.route('/logout', methods=['POST'])
@require_auth()
def logout():
    return jsonify(whatsapp_service.logout())


@whatsapp_bp.route('/webhook', methods=['POST'])
def webhook():
    """Receive messages from Baileys bridge (public, no auth)."""
    data = request.get_json(force=True, silent=True) or {}

    if data.get('event') != 'messages.upsert':
        return jsonify({'ok': True})

    msg = whatsapp_service.process_incoming(data)
    if not msg.get('phone') or msg.get('from_me'):
        return jsonify({'ok': True})

    # Save to DB if tenant connection available
    try:
        # Try to get a tenant connection (use default tenant for webhook)
        conn = get_tenant_conn(11)  # TODO: resolve tenant from phone number
        cur = conn.cursor()
        cur.execute("""
            INSERT INTO whatsapp_messages (phone, direction, message_text, wa_message_id)
            VALUES (%s, 'incoming', %s, %s)
            ON CONFLICT DO NOTHING
        """, (msg['phone'], msg['text'], msg['message_id']))
        conn.commit()
        cur.close()
        conn.close()
    except Exception:
        pass

    # Auto-reply with AI chatbot
    if msg.get('text'):
        try:
            from services.ai_chat import chat
            ai_resp = chat(msg['text'])
            reply = ai_resp.get('message', '')
            if reply:
                whatsapp_service.send_message(msg['phone'], reply)
        except Exception:
            pass

    return jsonify({'ok': True})


@whatsapp_bp.route('/send', methods=['POST'])
@require_auth()
def send():
    data = request.get_json() or {}
    phone = data.get('phone', '')
    message = data.get('message', '')
    if not phone or not message:
        return jsonify({'error': 'phone and message required'}), 400

    result = whatsapp_service.send_message(phone, message)

    # Save outgoing message
    try:
        conn = get_tenant_conn(g.tenant_id)
        cur = conn.cursor()
        cur.execute("""
            INSERT INTO whatsapp_messages (phone, direction, message_text)
            VALUES (%s, 'outgoing', %s)
        """, (phone, message))
        conn.commit()
        cur.close()
        conn.close()
    except Exception:
        pass

    return jsonify(result)


@whatsapp_bp.route('/conversations', methods=['GET'])
@require_auth()
def conversations():
    try:
        conn = get_tenant_conn(g.tenant_id)
        cur = conn.cursor()
        cur.execute("""
            SELECT phone, MAX(message_text) as last_message, MAX(created_at) as last_at, COUNT(*) as msg_count
            FROM whatsapp_messages
            GROUP BY phone
            ORDER BY MAX(created_at) DESC
            LIMIT 50
        """)
        convos = [{'phone': r[0], 'last_message': r[1], 'last_at': str(r[2]), 'count': r[3]} for r in cur.fetchall()]
        cur.close()
        conn.close()
        return jsonify({'conversations': convos})
    except Exception as e:
        return jsonify({'conversations': [], 'error': str(e)})


@whatsapp_bp.route('/conversations/<phone>', methods=['GET'])
@require_auth()
def conversation_messages(phone):
    try:
        conn = get_tenant_conn(g.tenant_id)
        cur = conn.cursor()
        cur.execute("""
            SELECT id, direction, message_text, created_at
            FROM whatsapp_messages
            WHERE phone = %s
            ORDER BY created_at
            LIMIT 100
        """, (phone,))
        msgs = [{'id': r[0], 'direction': r[1], 'text': r[2], 'date': str(r[3])} for r in cur.fetchall()]
        cur.close()
        conn.close()
        return jsonify({'messages': msgs})
    except Exception as e:
        return jsonify({'messages': [], 'error': str(e)})