from collections import defaultdict

from aiogram.filters.callback_data import CallbackData
from aiogram.types import InlineKeyboardButton, InlineKeyboardMarkup
from aiogram.utils.keyboard import InlineKeyboardBuilder

from database.tariffs import create_subgroup_hash

from ..panel.keyboard import AdminPanelCallback


class AdminTariffCallback(CallbackData, prefix="tariff"):
    action: str


def build_tariff_menu_kb() -> InlineKeyboardMarkup:
    builder = InlineKeyboardBuilder()
    builder.row(
        InlineKeyboardButton(
            text="🆕 Новый тариф",
            callback_data=AdminTariffCallback(action="create").pack(),
        )
    )
    builder.row(
        InlineKeyboardButton(
            text="📋 Мои тарифы",
            callback_data=AdminTariffCallback(action="list").pack(),
        )
    )
    builder.row(InlineKeyboardButton(text="⬅️ Назад", callback_data=AdminPanelCallback(action="admin").pack()))
    return builder.as_markup()


def build_cancel_kb() -> InlineKeyboardMarkup:
    return InlineKeyboardMarkup(
        inline_keyboard=[[InlineKeyboardButton(text="❌ Отменить", callback_data="cancel_tariff_creation")]]
    )


def build_tariff_groups_kb(groups: list[str]) -> InlineKeyboardMarkup:
    builder = InlineKeyboardBuilder()
    row = []

    for i, group in enumerate(groups):
        row.append(
            InlineKeyboardButton(
                text=group,
                callback_data=AdminTariffCallback(action=f"group|{group}").pack(),
            )
        )
        if len(row) == 2 or i == len(groups) - 1:
            builder.row(*row)
            row = []
    builder.row(
        InlineKeyboardButton(
            text="⬅️ Назад",
            callback_data=AdminPanelCallback(action="tariffs").pack(),
        )
    )
    return builder.as_markup()


def build_tariff_list_kb(tariffs: list[dict]) -> InlineKeyboardMarkup:
    builder = InlineKeyboardBuilder()

    if tariffs:
        group_code = tariffs[0]["group_code"]
    else:
        group_code = "unknown"

    grouped = defaultdict(list)
    for t in tariffs:
        subgroup = t.get("subgroup_title")
        grouped[subgroup].append(t)

    for subgroup_title, _items in grouped.items():
        if subgroup_title:
            subgroup_hash = create_subgroup_hash(subgroup_title, group_code)
            builder.row(
                InlineKeyboardButton(
                    text=f"{subgroup_title}", callback_data=f"view_subgroup|{subgroup_hash}|{group_code}"
                )
            )

    for t in grouped.get(None, []):
        title = f"{t['name']} — {t['price_rub']}₽"
        builder.row(
            InlineKeyboardButton(
                text=title,
                callback_data=AdminTariffCallback(action=f"view|{t['id']}").pack(),
            )
        )

    builder.row(
        InlineKeyboardButton(
            text="➕ Добавить тариф",
            callback_data=AdminTariffCallback(action=f"create|{group_code}").pack(),
        )
    )

    builder.row(InlineKeyboardButton(text="Сгруппировать в подгруппу", callback_data=f"start_subgrouping|{group_code}"))

    builder.row(
        InlineKeyboardButton(
            text="⬅️ Назад",
            callback_data=AdminTariffCallback(action="list").pack(),
        )
    )

    return builder.as_markup()


def build_single_tariff_kb(tariff_id: int) -> InlineKeyboardMarkup:
    return InlineKeyboardMarkup(
        inline_keyboard=[
            [
                InlineKeyboardButton(
                    text="✏️ Редактировать",
                    callback_data=AdminTariffCallback(action=f"edit|{tariff_id}").pack(),
                ),
                InlineKeyboardButton(
                    text="🗑 Удалить",
                    callback_data=AdminTariffCallback(action=f"delete|{tariff_id}").pack(),
                ),
            ],
            [
                InlineKeyboardButton(
                    text="⬅️ Назад",
                    callback_data=AdminTariffCallback(action="list").pack(),
                )
            ],
        ]
    )


def build_edit_tariff_fields_kb(tariff_id: int) -> InlineKeyboardMarkup:
    return InlineKeyboardMarkup(
        inline_keyboard=[
            [InlineKeyboardButton(text="📝 Название", callback_data=f"edit_field|{tariff_id}|name")],
            [
                InlineKeyboardButton(
                    text="📅 Длительность",
                    callback_data=f"edit_field|{tariff_id}|duration_days",
                )
            ],
            [InlineKeyboardButton(text="💰 Цена", callback_data=f"edit_field|{tariff_id}|price_rub")],
            [
                InlineKeyboardButton(
                    text="📦 Трафик (ГБ или 0)",
                    callback_data=f"edit_field|{tariff_id}|traffic_limit",
                )
            ],
            [
                InlineKeyboardButton(
                    text="📱 Лимит устройств",
                    callback_data=f"edit_field|{tariff_id}|device_limit",
                )
            ],
            [InlineKeyboardButton(text="🔘 Активность", callback_data=f"toggle_active|{tariff_id}")],
            [
                InlineKeyboardButton(
                    text="⬅️ Назад", callback_data=AdminTariffCallback(action=f"view|{tariff_id}").pack()
                )
            ],
        ]
    )