import { useEffect, useState } from 'react'
import { Container } from 'react-bootstrap'
import { useParams } from 'react-router-dom'
import { useTranslation } from 'react-i18next'
import { Link } from 'react-router-dom'
import { getUserProfile, listUserThanksGiven, listUserThanksReceived } from '../api/client'

export default function Profile() {
    const { id } = useParams()
    const { t } = useTranslation()
    const [profile, setProfile] = useState(null)
    const [error, setError] = useState('')
    const [loading, setLoading] = useState(true)
    const [thanksGiven, setThanksGiven] = useState([])
    const [thanksReceived, setThanksReceived] = useState([])
    const [loadingThanks, setLoadingThanks] = useState(true)

    useEffect(() => {
        let active = true
        setLoading(true)
        setError('')

        Promise.all([getUserProfile(id), listUserThanksGiven(id), listUserThanksReceived(id)])
            .then(([profileData, givenData, receivedData]) => {
                if (!active) return
                setProfile(profileData)
                setThanksGiven(Array.isArray(givenData) ? givenData : [])
                setThanksReceived(Array.isArray(receivedData) ? receivedData : [])
            })
            .catch((err) => {
                if (!active) return
                setError(err.message)
                setThanksGiven([])
                setThanksReceived([])
            })
            .finally(() => {
                if (!active) return
                setLoading(false)
                setLoadingThanks(false)
            })

        return () => {
            active = false
        }
    }, [id])

    const formatDateTime = (value) => {
        if (!value) return '—'
        const date = new Date(value)
        if (Number.isNaN(date.getTime())) return '—'
        const day = String(date.getDate()).padStart(2, '0')
        const month = String(date.getMonth() + 1).padStart(2, '0')
        const year = String(date.getFullYear())
        const hours = String(date.getHours()).padStart(2, '0')
        const minutes = String(date.getMinutes()).padStart(2, '0')
        const seconds = String(date.getSeconds()).padStart(2, '0')
        return `${day}.${month}.${year} ${hours}:${minutes}:${seconds}`
    }

    return (
        <Container fluid className="py-5 bb-portal-shell">
            <div className="bb-portal-card">
                <div className="bb-portal-card-title">{t('profile.title')}</div>
                {loading && <p className="bb-muted">{t('profile.loading')}</p>}
                {error && <p className="text-danger">{error}</p>}
                {profile && (
                    <div className="bb-profile">
                        <div className="bb-profile-avatar">
                            {profile.avatar_url ? (
                                <img src={profile.avatar_url} alt="" />
                            ) : (
                                <i className="bi bi-person" aria-hidden="true" />
                            )}
                        </div>
                        <div className="bb-profile-meta">
                            <div className="bb-profile-name">{profile.name}</div>
                            {profile.created_at && (
                                <div className="bb-muted">
                                    {t('profile.registered')} {profile.created_at.slice(0, 10)}
                                </div>
                            )}
                        </div>
                    </div>
                )}
                {profile && (
                    <div className="bb-profile-thanks mt-4">
                        <div className="bb-profile-section">
                            <div className="bb-portal-card-title">{t('profile.thanks_given')}</div>
                            {loadingThanks && <p className="bb-muted">{t('profile.loading')}</p>}
                            {!loadingThanks && thanksGiven.length === 0 && (
                                <p className="bb-muted">{t('profile.thanks_empty')}</p>
                            )}
                            {!loadingThanks && thanksGiven.length > 0 && (
                                <ul className="bb-profile-thanks-list">
                                    {thanksGiven.map((item) => (
                                        <li key={item.id} className="bb-profile-thanks-item">
                                            <Link to={`/thread/${item.thread_id}#post-${item.post_id}`}>
                                                {item.thread_title || t('thread.label')}
                                            </Link>
                                            {item.post_author_id ? (
                                                <span className="bb-profile-thanks-meta">
                                                    {t('profile.thanks_for')}{' '}
                                                    <Link
                                                        to={`/profile/${item.post_author_id}`}
                                                        style={
                                                            item.post_author_rank_color || item.post_author_group_color
                                                                ? {
                                                                    '--bb-user-link-color':
                                                                      item.post_author_rank_color || item.post_author_group_color,
                                                                }
                                                                : undefined
                                                        }
                                                    >
                                                        {item.post_author_name || t('thread.anonymous')}
                                                    </Link>
                                                </span>
                                            ) : (
                                                <span className="bb-profile-thanks-meta">
                                                    {t('profile.thanks_for')} {item.post_author_name || t('thread.anonymous')}
                                                </span>
                                            )}
                                            <span className="bb-profile-thanks-date">
                                                {formatDateTime(item.thanked_at)}
                                            </span>
                                        </li>
                                    ))}
                                </ul>
                            )}
                        </div>
                        <div className="bb-profile-section">
                            <div className="bb-portal-card-title">{t('profile.thanks_received')}</div>
                            {loadingThanks && <p className="bb-muted">{t('profile.loading')}</p>}
                            {!loadingThanks && thanksReceived.length === 0 && (
                                <p className="bb-muted">{t('profile.thanks_empty')}</p>
                            )}
                            {!loadingThanks && thanksReceived.length > 0 && (
                                <ul className="bb-profile-thanks-list">
                                    {thanksReceived.map((item) => (
                                        <li key={item.id} className="bb-profile-thanks-item">
                                            <Link to={`/thread/${item.thread_id}#post-${item.post_id}`}>
                                                {item.thread_title || t('thread.label')}
                                            </Link>
                                            {item.thanker_id ? (
                                                <span className="bb-profile-thanks-meta">
                                                    {t('profile.thanks_by')}{' '}
                                                    <Link
                                                        to={`/profile/${item.thanker_id}`}
                                                        style={
                                                            item.thanker_rank_color || item.thanker_group_color
                                                                ? {
                                                                    '--bb-user-link-color':
                                                                      item.thanker_rank_color || item.thanker_group_color,
                                                                }
                                                                : undefined
                                                        }
                                                    >
                                                        {item.thanker_name || t('thread.anonymous')}
                                                    </Link>
                                                </span>
                                            ) : (
                                                <span className="bb-profile-thanks-meta">
                                                    {t('profile.thanks_by')} {item.thanker_name || t('thread.anonymous')}
                                                </span>
                                            )}
                                            <span className="bb-profile-thanks-date">
                                                {formatDateTime(item.thanked_at)}
                                            </span>
                                        </li>
                                    ))}
                                </ul>
                            )}
                        </div>
                    </div>
                )}
            </div>
        </Container>
    )
}