import os
from re import Match
from aiogram import Router, F
from aiogram.types import CallbackQuery, FSInputFile
from aiogram.fsm.context import FSMContext
from sqlalchemy.ext.asyncio import AsyncSession

from config import PAGE_SIZE, VERIFIED_ACCOUNTS
from misc.kb import admins
from misc.kb.client import (
    render_product_interactions,
    render_products,
)
from misc.texts import get_product_description
from repositories.categories import CategoriesRepository
from repositories.products import ProductRepository
from services.orders import OrderService

router = Router()


@router.callback_query(
    F.data.regexp(r"products:(?P<category_id>.*):(?P<page_id>\d+)").as_(
        "pagination_match"
    )
)
async def products_pagination(
    cb: CallbackQuery,
    state: FSMContext,
    pagination_match: Match[str],
    session: AsyncSession,
    products_repo: ProductRepository,
    categories_repo: CategoriesRepository,
):
    await state.clear()

    pagination_data = pagination_match.groupdict()
    category_id = int(pagination_data.get("category_id"))
    category = await categories_repo.get_category_by_id(session, category_id)
    page_id = int(pagination_data.get("page_id", 0))

    products = await products_repo.get_product_by_category(
        session, category_id, limit=PAGE_SIZE + 1, offset=page_id * PAGE_SIZE
    )
    products_len = len(products)

    await cb.message.edit_reply_markup(
        reply_markup=render_products(
            products[:PAGE_SIZE],
            product_cb_factory=lambda p: f"product:{p.id}",
            back_cb=f"cat:{category.parent_id}",
            prev_cb=(f"products:{category_id}:{page_id - 1}" if page_id > 0 else None),
            next_cb=(
                f"products:{category_id}:{page_id + 1}"
                if products_len > PAGE_SIZE
                else None
            ),
            columns=2,
        ),
    )


@router.callback_query(F.data.startswith("product:"))
async def product_card(
    cb: CallbackQuery,
    state: FSMContext,
    session: AsyncSession,
    products_repo: ProductRepository,
    order_service: OrderService,
):
    await state.clear()

    product_id = int(cb.data.split(":")[1])
    product = await products_repo.get_product_by_id(session, product_id)

    if cb.from_user.id in VERIFIED_ACCOUNTS:
        kb = admins.edit_product(product_id=product.id, category_id=product.category_id)
    else:
        order_item = await order_service.get_cart_product_amount(
            session, customer=cb.from_user.id, product_id=product_id
        )
        kb = render_product_interactions(
            product_id=product.id,
            category_id=product.category_id,
            show_cart=bool(order_item),
            cart_amount=order_item,
        )

    if product.file_id:
        await cb.message.delete()

        msg = await cb.message.answer_photo(
            product.file_id,
            caption=get_product_description(product),
            reply_markup=kb,
        )
        return

    if not os.path.isfile(product.img_path):
        await cb.message.edit_text(
            get_product_description(product),
            reply_markup=kb,
        )
        return

    await cb.message.delete()
    msg = await cb.message.answer_photo(
        FSInputFile(product.img_path),
        caption=get_product_description(product),
        reply_markup=kb,
    )

    if not msg.photo:
        return  # TODO: Add logging

    await products_repo.add_product_file_id(
        session, product_id, file_id=msg.photo[-1].file_id
    )


@router.callback_query(F.data.startswith("cart_action:"))
async def cart_action(
    cb: CallbackQuery,
    state: FSMContext,
    session: AsyncSession,
    order_service: OrderService,
    products_repo: ProductRepository,
):
    await state.clear()

    action = cb.data.split(":")[1]
    product_id = int(cb.data.split(":")[2])
    product = await products_repo.get_product_by_id(session, product_id)
    show_cart = True

    if action == "add":
        quantity = await order_service.add_to_cart(
            session, customer=cb.from_user.id, product_id=product_id
        )
    elif action == "remove":
        quantity = await order_service.remove_from_cart(
            session, customer=cb.from_user.id, product_id=product_id
        )
        show_cart = bool(quantity)
    else:
        show_cart = False
        quantity = 0
        await order_service.clear_from_cart(
            session, customer=cb.from_user.id, product_id=product_id
        )

    try:
        await cb.message.edit_reply_markup(
            reply_markup=render_product_interactions(
                product_id=product_id,
                category_id=product.category_id,
                show_cart=show_cart,
                cart_amount=quantity,
            )
        )
    except Exception as e:
        await cb.answer("🍃")
        raise e