from app.settings_cache import SettingsCache
from app.conversation import get_or_create_user, get_template_rendered
from app.fsm import BotState, FSM
from app.keyboards.inline import build_main_menu_buttons


async def handle_sla_ticket(bot, user_data: dict, db, max_api):
    max_user_id = user_data["user_id"]
    text = user_data.get("text", "").strip()

    if FSM.get_state(max_user_id) != BotState.SLA_TICKET_CREATE:
        FSM.set_state(max_user_id, BotState.SLA_TICKET_CREATE)
        await max_api.send_message(max_user_id, "🔧 **Заявка по SLA**\n\nПроверяю ваш SLA контракт...")

        user = await get_or_create_user(db, max_user_id)
        phone = user.phone or ""
        if not phone:
            await max_api.send_message(max_user_id, "Не могу найти ваш номер телефона. Укажите его, пожалуйста.")
            return

        from sqlalchemy import select
        from app.models.models import Customer, Object, SLAContract
        result = await db.execute(
            select(Customer).where(Customer.contact_phone.ilike(f"%{phone[-10:]}%")).limit(1)
        )
        customer = result.scalar_one_or_none()
        if not customer:
            await _send_no_sla(bot, user_data, db, max_api)
            return

        result = await db.execute(
            select(Object).where(Object.customer_id == customer.id, Object.status == "active").limit(1)
        )
        obj = result.scalar_one_or_none()
        if not obj:
            await _send_no_sla(bot, user_data, db, max_api)
            return

        result = await db.execute(
            select(SLAContract).where(
                SLAContract.object_id == obj.id,
                SLAContract.status == "active"
            ).order_by(SLAContract.created_at.desc()).limit(1)
        )
        sla = result.scalar_one_or_none()
        if not sla:
            await _send_no_sla(bot, user_data, db, max_api)
            return

        level_map = {"start": "Базовый", "business": "Оптимальный", "enterprise": "Максимальный"}
        text = await get_template_rendered(db, "sla_ticket_found",
                                           object_name=obj.name,
                                           service_level=level_map.get(sla.service_level, sla.service_level))
        await max_api.send_message(max_user_id, text, format="markdown")
        return

    if not text:
        await max_api.send_message(max_user_id, "Опишите неисправность. Вы можете прикрепить фото или документ.")
        return

    user = await get_or_create_user(db, max_user_id)

    from sqlalchemy import select, func
    from app.models.models import Customer, Object, SLAContract, BotTicket
    result = await db.execute(
        select(Customer).where(Customer.contact_phone.ilike(f"%{user.phone[-10:]}%")).limit(1)
    )
    customer = result.scalar_one_or_none()
    obj = None
    sla = None
    if customer:
        result = await db.execute(
            select(Object).where(Object.customer_id == customer.id, Object.status == "active").limit(1)
        )
        obj = result.scalar_one_or_none()
        if obj:
            result = await db.execute(
                select(SLAContract).where(
                    SLAContract.object_id == obj.id, SLAContract.status == "active"
                ).order_by(SLAContract.created_at.desc()).limit(1)
            )
            sla = result.scalar_one_or_none()

    priority_map = {"start": "low", "business": "normal", "enterprise": "high"}
    response_map = {"start": "4 часа", "business": "2 часа", "enterprise": "30 минут"}
    sla_level = sla.service_level if sla else "start"
    priority = priority_map.get(sla_level, "normal")

    result = await db.execute(select(func.count(BotTicket.id)))
    ticket_num = f"T-{result.scalar() + 1:04d}"

    from app.models.models import BotTicket, BotTicketMessage, BotTicketStatus
    ticket = BotTicket(
        ticket_number=ticket_num,
        user_id=user.id,
        object_id=obj.id if obj else None,
        customer_id=customer.id if customer else None,
        title=text[:100],
        description=text,
        priority=priority,
        status="open",
        created_by="bot",
        sla_contract_id=sla.id if sla else None,
        has_attachment=user_data.get("has_attachment", False),
        attachment_type=user_data.get("attachment_type", ""),
        attachment_path=user_data.get("attachment_path", ""),
    )
    db.add(ticket)
    await db.flush()

    db.add(BotTicketMessage(ticket_id=ticket.id, direction="in", text=text, sender="client"))
    db.add(BotTicketStatus(ticket_id=ticket.id, old_status="", new_status="open", changed_by="bot"))
    await db.flush()

    has_attachment = user_data.get("has_attachment", False)
    attachment_type = user_data.get("attachment_type", "")
    attachment_path = user_data.get("attachment_path", "")
    if has_attachment:
        ticket.has_attachment = True
        ticket.attachment_type = attachment_type
        ticket.attachment_path = attachment_path
        await db.flush()

    text = await get_template_rendered(db, "sla_ticket_created",
                                       ticket_number=ticket_num,
                                       priority=priority,
                                       response_time=response_map.get(sla_level, "2 часа"))
    await max_api.send_message(max_user_id, text, format="markdown")

    from app.max_notifications import notify_ticket_created as nt
    await nt(db, ticket, max_api)

    FSM.transition(max_user_id, "done")
    buttons = build_main_menu_buttons()
    menu_text = await get_template_rendered(db, "main_menu")
    await max_api.send_message_with_keyboard(max_user_id, menu_text, buttons)


async def _send_no_sla(bot, user_data, db, max_api):
    max_user_id = user_data["user_id"]
    await SettingsCache.refresh(db)
    phone_1 = SettingsCache.get("phone_1")
    phone_2 = SettingsCache.get("phone_2")
    email = SettingsCache.get("support_email")
    text = await get_template_rendered(db, "sla_ticket_not_found",
                                       phone_1=phone_1, phone_2=phone_2,
                                       support_email=email)
    from app.keyboards.inline import build_phone_email_buttons
    subject = SettingsCache.get("email_subject")
    buttons = build_phone_email_buttons(phone_1, phone_2, email, subject)
    await max_api.send_message_with_keyboard(max_user_id, text, buttons, format="markdown")
    FSM.transition(max_user_id, "done")
    buttons = build_main_menu_buttons()
    menu_text = await get_template_rendered(db, "main_menu")
    await max_api.send_message_with_keyboard(max_user_id, menu_text, buttons)