import { useState } from 'react';
import styled, {css} from 'styled-components';
import { declension } from '../../utils/declension';
import type { User } from '../../types/user';
import { PersonModal } from './PersonModal';

interface FamilySectionProps {
    users: User[];
    availableTags: string[];
    onChange: (users: User[]) => void;
}

export function FamilySection({
                                  users,
                                  availableTags,
                                  onChange,
                              }: FamilySectionProps) {
    const [editingIndex, setEditingIndex] = useState<number | null>(null);
    const [isModalOpen, setIsModalOpen] = useState(false);

    function handleDelete(index: number) {
        onChange(users.filter((_, userIndex) => userIndex !== index));
    }

    function handleSave(user: User) {
        if (editingIndex === null) {
            onChange([...users, user]);
        } else {
            onChange(users.map((item, index) => index === editingIndex ? user : item));
        }

        setIsModalOpen(false);
        setEditingIndex(null);
    }

    return (
        <>
            <FamilyList>
                {users.map((user, index) => (
                    <FamilyMember
                        key={`${user.name}-${index}`}
                        onClick={() => {
                            setEditingIndex(index);
                            setIsModalOpen(true);
                        }}
                    >
                        <Avatar>
                            <img src={getAvatarSrc(user)} alt="" />
                        </Avatar>

                        <Info>
                            <Name>{user.name}</Name>
                            <Age>
                                {user.age} {declension(user.age, ['год', 'года', 'лет'])}
                                <b> • </b>
                                <span>{user.gender === 'm' ? 'Мужской' : 'Женский'}</span>
                            </Age>
                        </Info>

                        <DeleteButton
                            type="button"
                            onClick={event => {
                                event.stopPropagation();
                                handleDelete(index);
                            }}
                        >
                            <svg width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
                                <path d="M14.167 14.1641L5.83366 5.83073M14.167 5.83073L5.83366 14.1641" stroke="#CEDFD0" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
                            </svg>

                        </DeleteButton>
                    </FamilyMember>
                ))}
            </FamilyList>

            <AddWrapper>
                <AddButton
                    type="button"
                    onClick={() => {
                        setEditingIndex(null);
                        setIsModalOpen(true);
                    }}
                >
                    Добавить человека <span>+</span>
                </AddButton>
            </AddWrapper>

            <PersonModal
                isOpen={isModalOpen}
                user={editingIndex === null ? null : users[editingIndex]}
                availableTags={availableTags}
                onClose={() => {
                    setIsModalOpen(false);
                    setEditingIndex(null);
                }}
                onSave={handleSave}
            />
        </>
    );
}

function getAvatarSrc(user: User): string {
    if (user.age < 16) {
        return user.gender === 'f'
            ? '/images/broc-girl.png'
            : '/images/broc-boy.png';
    }

    return user.gender === 'f'
        ? '/images/broc-woman.png'
        : '/images/broc-man.png';
}

const FamilyList = styled.div`
    display: flex;
    flex-direction: column;
    gap: 12px;
`;

const FamilyMember = styled.div`
    width: 100%;
    display: flex;
    align-items: stretch;
    padding: 12px 20px;
    border: 1px solid ${({ theme }) => theme.colors.border};
    border-radius: 12px;
    background: #fff;
    transition: 0.2s;
    cursor: pointer;
    text-align: left;
    height: 100%;

    &:hover {
        border-color: #c0c0c0;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
    }

    &:nth-child(n+1) ${() => Avatar} {
        background-color: #CEE0FF;
    }

    &:nth-child(2n+2) ${() => Avatar} {
        background-color: #E6F696;
    }

    &:nth-child(3n+3) ${() => Avatar} {
        background-color: #fff488;
    }

    &:nth-child(4n+4) ${() => Avatar} {
        background-color: #ffd623;
    }
`;

const Avatar = styled.div`
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 14px;
    overflow: hidden;

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

const Info = styled.div`
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
`;

const Name = styled.div`
    font-size: 16px;
    font-weight: 600;
    color: ${({ theme }) => theme.colors.darkGreen};
    ${props => props.theme.media.mobile(css`
        padding-top: 1.5px;
        font-size: 14px;
    `)}
`;

const Age = styled.div`
    font-size: 16px;
    font-weight: 350;
    color: ${({ theme }) => theme.colors.gray};
    * {
        color: inherit;
    }
    ${props => props.theme.media.mobile(css`
        font-size: 14px;
        padding-bottom: 4.5px;
    `)}
`;

const DeleteButton = styled.button`
    color: #d1d5db;
    cursor: pointer;
    font-size: 18px;
    transition: 0.2s;
    background: transparent;
    border: 0;
    width: 20px;
    height: 20px;
    align-self: center;

    &:hover {
        color: #e53935;
    }
`;

const AddWrapper = styled.div`
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
`;

const AddButton = styled.button`
    padding: 18px 23px;
    border-radius: 12px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 14px;
    color: ${({ theme }) => theme.colors.green};
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: 0.2s;
    background-color: transparent;
    border: 0;

    span {
        color:inherit;
        font-weight: inherit;
    }

    &:hover {
        background-color: #F7FBF6;
    }

    &:active,
    &:focus {
        background-color: #EEF8EB;
        outline: none;
    }

    span {
        font-size: 20px;
        margin-left: 8px;
        font-weight: 300;
    }
`;