import json
import re
import requests
from fastapi import FastAPI, Request
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import JSONResponse

# =========================
# Config
# =========================

GREENAPI_INSTANCE_ID = "7105210836"
GREENAPI_TOKEN = "805b69f6c85d4e6caea0edaba692b889abecc9e6bb8b457e8f"

GREENAPI_BASE = f"https://7105.api.greenapi.com/waInstance{GREENAPI_INSTANCE_ID}"

# Interactive buttons endpoint
GREENAPI_SEND_URL_BUTTON_URL = f"{GREENAPI_BASE}/sendInteractiveButtons/{GREENAPI_TOKEN}"

# Interactive REPLY buttons endpoint
GREENAPI_SEND_REPLY_BUTTONS_URL = f"{GREENAPI_BASE}/sendInteractiveButtonsReply/{GREENAPI_TOKEN}"

# Plain text endpoint (لو عندك endpoint مختلف في GreenAPI غيّره هنا)
GREENAPI_SEND_TEXT_URL = (
    f"https://7105.api.greenapi.com/"
    f"waInstance{GREENAPI_INSTANCE_ID}/sendMessage/{GREENAPI_TOKEN}"
)

COMPLAINT_FORM_URL = "https://mrhelp92.github.io/Complaint-form/"  # <-- حط لينك فورم الشكوى الحقيقي
AI_BOT_URL = "https://mr-help-adkbase.hf.space/processtext"  # <-- endpoint بتاع البوت

TIMEOUT_SEC = 60

# (لو عايز تفضل GAS زي ما هو موجود)
GAS_WEBAPP_URL = "https://script.google.com/macros/s/AKfycbxFLlPzSvXM6xpVXR3-BjoK1lkNjYb8o1pctXI4Q2NZvv6wqKnIaSQA6hhL5lP_TQbTgQ/exec"

app = FastAPI()
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=False,
    allow_methods=["POST", "OPTIONS"],
    allow_headers=["*"],
)

# =========================
# Intent detection (بسيط)
# =========================

GREET_WORDS = [
    "اهلا", "أهلا", "مرحبا", "هاي", "hello", "hi",
    "السلام عليكم", "سلام عليكم", "مساء الخير", "صباح الخير",
    "مساء الفل", "صباح الفل"
]

COMPLAINT_WORDS = [
    "شكوى", "شكاوي", "اشتكي", "مشكلة", "مشكلتي", "تذمر", "زعلان",
    "سيء", "خدمة سيئة", "عايز أشتكي", "عايز اشتكي", "complaint"
]

def detect_intent_simple(text: str) -> str:
    t = (text or "").strip().lower()

    if any(w in t for w in [x.lower() for x in GREET_WORDS]):
        return "GREETING"

    if any(w in t for w in [x.lower() for x in COMPLAINT_WORDS]):
        return "COMPLAINT"

    return "OTHER"

# =========================
# GreenAPI send helpers
# =========================

def send_url_button(chat_id: str, header: str, body: str, footer: str, url: str, button_text: str = "تسجيل الشكوى"):
    payload = {
        "chatId": chat_id,
        "body": body,
        "header": header,
        "footer": footer,
        "buttons": [
            {
                "type": "url",
                "buttonId": "1",
                "buttonText": button_text,
                "url": url
            }
        ]
    }
    resp = requests.post(GREENAPI_SEND_URL_BUTTON_URL, json=payload, timeout=TIMEOUT_SEC)
    return resp.status_code, (resp.text or "")[:1500]


def send_reply_buttons(chat_id: str, header: str, body: str, footer: str, buttons: list):
    """
    buttons example:
      [{"buttonId":"1","buttonText":"..."}, ...]
    """
    payload = {
        "chatId": chat_id,
        "body": body,
        "header": header,
        "footer": footer,
        "buttons": buttons
    }
    resp = requests.post(GREENAPI_SEND_REPLY_BUTTONS_URL, json=payload, timeout=TIMEOUT_SEC)
    return resp.status_code, (resp.text or "")[:1500]

def send_text_message(chat_id: str, message: str):
    payload = {
        "chatId": chat_id,
        "message": message
    }
    headers = {
        "Content-Type": "application/json"
    }

    resp = requests.post(
        GREENAPI_SEND_TEXT_URL,
        json=payload,
        headers=headers,
        timeout=TIMEOUT_SEC
    )

    return resp.status_code, (resp.text or "")[:1500]

# =========================
# AI bot call
# =========================

def call_ai_bot(message: str):
    payload = {"message": message}
    resp = requests.post(AI_BOT_URL, json=payload, timeout=TIMEOUT_SEC)
    resp.raise_for_status()
    try:
        return resp.json()
    except Exception:
        return {"ok": False, "raw": resp.text}

# =========================
# Webhook receiver
# =========================

def extract_text_message(msg_data: dict) -> str:
    """
    يرجّع نص المستخدم سواء كان:
    - textMessage
    - extendedTextMessage
    - interactiveButtonsResponse (ضغط زرار)
    """
    if not isinstance(msg_data, dict):
        return ""

    t = (msg_data.get("typeMessage") or "").strip()

    # 1) رسالة نصية عادية
    if t == "textMessage":
        return ((msg_data.get("textMessageData") or {}).get("textMessage") or "").strip()

    # 2) رسالة نصية ممتدة (شائع)
    if t == "extendedTextMessage":
        return ((msg_data.get("extendedTextMessageData") or {}).get("text") or "").strip()

    # 3) ضغط زرار (Interactive Buttons Response)
    if t == "interactiveButtonsResponse":
        r = msg_data.get("interactiveButtonsResponse") or {}
        # أهم حاجة: selectedDisplayText (نص الزرار)
        txt = (r.get("selectedDisplayText") or "").strip()
        if txt:
            return txt
        # fallback: selectedId
        return (r.get("selectedId") or "").strip()

    # fallback عام
    for path in [
        ("textMessageData", "textMessage"),
        ("extendedTextMessageData", "text"),
        ("interactiveButtonsResponse", "selectedDisplayText"),
        ("interactiveButtonsResponse", "selectedId"),
        ("text",),
        ("message",),
    ]:
        cur = msg_data
        for k in path:
            cur = cur.get(k) if isinstance(cur, dict) else None
        if isinstance(cur, str) and cur.strip():
            return cur.strip()

    return ""

@app.post("/recieve")
async def webhook_receiver(req: Request):
    try:
        body = await req.json()
    except Exception:
        raw = await req.body()
        print("===== RECEIVED RAW =====")
        print(raw)
        print("========================")
        return {"ok": True}

    print("===== RECEIVED JSON =====")
    print(json.dumps(body, ensure_ascii=False, indent=2))
    print("=========================")

    # 1) فلتر نوع الويبهوك
    if body.get("typeWebhook") != "incomingMessageReceived":
        return {"ok": True, "ignored": True}

    # 2) استخرج wid + chatId + الرسالة
    instance_wid = (body.get("instanceData") or {}).get("wid")  # ده wid بتاع الـ instance
    sender_data = body.get("senderData") or {}
    chat_id = sender_data.get("chatId")  # ده اللي لازم تبعت له الرد
    msg_data = body.get("messageData") or {}

    type_message = (msg_data.get("typeMessage") or "")
    text_message = extract_text_message(msg_data)


    print(">>> instance_wid:", instance_wid)
    print(">>> chat_id:", chat_id)
    print(">>> typeMessage:", type_message)
    print(">>> text_message:", text_message)

    # لو مفيش chat_id أو مفيش رسالة نصية، نوقف
    if not chat_id or not text_message:
        return {"ok": True, "skipped": True}

    # 3) حدّد intent
    intent = detect_intent_simple(text_message)
    print(">>> intent:", intent)

    # 4) ردود حسب intent
    if intent == "GREETING":
        header = "أهلاً بيك في ÄDK 👋"
        body_txt = (
            "منورنا! 😊\n"
            "أنا مساعد ÄDK، تحب اساعدك ازاي؟"
        )
        footer = "ÄDK - German Courses"

        buttons = [
            {"buttonId": "1", "buttonText": "أنواع الكورسات"},
            {"buttonId": "2", "buttonText": "تحديد مستوى"},
            {"buttonId": "3", "buttonText": "تواصل معنا"},
        ]

        status, txt = send_reply_buttons(chat_id, header, body_txt, footer, buttons)

        print(">>> sent GREETING buttons:", status, txt)
        return {"ok": True, "intent": intent}

    if intent == "COMPLAINT":
        header = "احنا هنا عشان نساعدك 🤝"
        body_txt = "يسعدنا تواصلك. سجل الشكوى من الرابط ده، وفريقنا هيتواصل معاك في أقرب وقت."
        footer = "شكراً لاختيار ÄDK"

        status, txt = send_url_button(
            chat_id=chat_id,
            header=header,
            body=body_txt,
            footer=footer,
            url=COMPLAINT_FORM_URL,
            button_text="تسجيل الشكوى"
        )

        print(">>> sent COMPLAINT url button:", status, txt)
        return {"ok": True, "intent": intent}

    # 5) غير كده → نبعته للـ AI bot
    try:
        bot_res = call_ai_bot(text_message)
        # نتوقع {ok, intent, reply}
        reply = ""
        if isinstance(bot_res, dict):
            reply = (bot_res.get("reply") or "").strip()
        if not reply:
            reply = "تمام — وصلت رسالتك. ممكن توضّحلي قصدك أكتر؟"

        status, txt = send_text_message(chat_id, reply)
        print(">>> sent AI reply:", status, txt)

        return {"ok": True, "intent": "AI", "bot_intent": (bot_res.get("intent") if isinstance(bot_res, dict) else None)}

    except Exception as e:
        print("❌ AI bot failed:", str(e))
        # fallback لطيف
        status, txt = send_text_message(chat_id, "تمام — حصلت مشكلة بسيطة. ممكن تعيد إرسال رسالتك تاني؟")
        print(">>> sent fallback:", status, txt)
        return JSONResponse(status_code=200, content={"ok": True, "intent": "AI_FAILED", "error": str(e)})

# =========================
# Complaints proxy (زي ما هو عندك)
# =========================

@app.post("/complaints")
async def complaints_proxy(req: Request):
    try:
        payload = await req.json()
    except Exception as e:
        print("❌ Failed to parse incoming JSON:", str(e))
        return JSONResponse(status_code=400, content={"ok": False, "error": "invalid json body"})

    print("========== INCOMING PAYLOAD ==========")
    print(json.dumps(payload, ensure_ascii=False, indent=2))
    print("======================================")

    try:
        gas_resp = requests.post(
            GAS_WEBAPP_URL,
            json=payload,
            headers={"Content-Type": "application/json"},
            timeout=60
        )
    except Exception as e:
        print("❌ ERROR calling GAS:", repr(e))
        return JSONResponse(
            status_code=502,
            content={"ok": False, "error": "failed to reach GAS", "details": str(e)}
        )

    print("========== GAS STATUS ==========")
    print(gas_resp.status_code)
    print("========== GAS RAW TEXT (first 1500 chars) ==========")
    print((gas_resp.text or "")[:1500])
    print("=====================================================")

    try:
        gas_json = gas_resp.json()
        return JSONResponse(status_code=200, content=gas_json)
    except Exception:
        return JSONResponse(
            status_code=200,
            content={
                "ok": False,
                "error": "GAS returned non-JSON",
                "gas_status": gas_resp.status_code,
                "raw": (gas_resp.text or "")[:1500]
            }
        )