import { useState } from 'react';
import styled from 'styled-components';
import { getProductAmount } from '../../utils/product';
import type { Product } from '../../types/cart';

interface CartItemProps {
    product: Product;
    isProcessing: boolean;
    onOpen: () => void;
    onReplace: () => void;
    onDelete: () => void;
}

export function CartItem({
                             product,
                             isProcessing,
                             onOpen,
                             onReplace,
                             onDelete,
                         }: CartItemProps) {
    const [isMenuOpen, setIsMenuOpen] = useState(false);

    return (
        <Item $processing={isProcessing}>
            <ItemImage type="button" onClick={onOpen}>
                <img src={product.image} alt="" />
            </ItemImage>

            <ItemDetails>
                <ItemName>{product.name}</ItemName>
                <ItemPrice>
                    {getProductAmount(product)} &times; {Math.round(product.price * 100) / 100} ₽
                </ItemPrice>
            </ItemDetails>

            <MenuWrapper>
                <MenuButton
                    type="button"
                    onClick={() => setIsMenuOpen(value => !value)}
                >
                    &#8942;
                </MenuButton>

                {isMenuOpen && (
                    <Dropdown>
                        <ul>
                            <li>
                                <button type="button" onClick={onReplace}>
                                    Заменить
                                </button>
                            </li>
                            <li>
                                <button type="button" onClick={onDelete}>
                                    Удалить
                                </button>
                            </li>
                        </ul>
                    </Dropdown>
                )}
            </MenuWrapper>
        </Item>
    );
}

const Item = styled.li<{ $processing: boolean }>`
    display: flex;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid #f0f0f0;
    position: relative;
    transition: opacity 0.4s, transform 0.4s;
    opacity: ${({ $processing }) => ($processing ? 0.5 : 1)};
    pointer-events: ${({ $processing }) => ($processing ? 'none' : 'auto')};
`;

const ItemImage = styled.button`
    width: 72px;
    height: 65px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 16px;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
    border: 0;
    background: transparent;
    cursor: pointer;

    img {
        max-width: 100%;
        max-height: 100%;
    }
`;

const ItemDetails = styled.div`
    flex: 1;
`;

const ItemName = styled.div`
    font-size: 15px;
    color: ${({ theme }) => theme.colors.darkGreen};
    margin-bottom: 4px;
`;

const ItemPrice = styled.div`
    font-size: 14px;
    color: ${({ theme }) => theme.colors.gray};
`;

const MenuWrapper = styled.div`
    position: relative;
`;

const MenuButton = styled.button`
    background: none;
    border: none;
    color: #b0b0b0;
    cursor: pointer;
    padding: 4px 8px;
    font-size: 20px;
    letter-spacing: 2px;
    border-radius: 4px;
    transition: 0.2s;

    &:hover {
        background: #f3f4f6;
        color: ${({ theme }) => theme.colors.darkGreen};
    }
`;

const Dropdown = styled.div`
    position: absolute;
    right: 0;
    top: 100%;
    background: #ffffff;
    border: 1px solid #eee;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    min-width: 150px;
    padding: 6px 0;
    z-index: 10;
    margin-top: 4px;

    ul {
        list-style: none;
    }

    button {
        width: 100%;
        padding: 10px 16px;
        font-size: 14px;
        color: ${({ theme }) => theme.colors.darkGreen};
        cursor: pointer;
        transition: 0.2s;
        background: transparent;
        border: 0;
        text-align: left;

        &:hover {
            background: #f3f4f6;
        }
    }
`;