'use client'

import { useState } from 'react'

type Reason = { key: string; label: string; desc: string }

export type PostActionLabels = {
  like: string
  copyLink: string
  copied: string
  report: string
  bookmark: string
  bookmarked: string
  loginRequired: string
  reportTitle: string
  reportIntro: string
  reportDetail: string
  reportSubmit: string
  reportSent: string
  reminderTitle: string
  savedBookmark: string
  remind2h: string
  remindTomorrow: string
  remind3days: string
  remindMore: string
  editTitle: string
  notePlaceholder: string
  save: string
  cancel: string
  remove: string
  reminderLabel: string
  rNone: string
  rTomorrow: string
  rNextWeek: string
  rNextMonth: string
  rCustom: string
}

const at8am = (daysAhead: number) => {
  const d = new Date()
  d.setDate(d.getDate() + daysAhead)
  d.setHours(8, 0, 0, 0)
  return Math.floor(d.getTime() / 1000)
}

export function PostActions({
  postId,
  permalink,
  canAct,
  loginHref,
  initialLikes,
  initialLiked,
  initialBookmarked,
  initialNote,
  initialRemindAt,
  locale,
  reasons,
  labels,
}: {
  postId: number
  permalink: string
  canAct: boolean
  loginHref: string
  initialLikes: number
  initialLiked: boolean
  initialBookmarked: boolean
  initialNote: string
  initialRemindAt: number | null
  locale: string
  reasons: Reason[]
  labels: PostActionLabels
}) {
  const [likes, setLikes] = useState(initialLikes)
  const [liked, setLiked] = useState(initialLiked)
  const [bookmarked, setBookmarked] = useState(initialBookmarked)
  const [note, setNote] = useState(initialNote)
  const [remindAt, setRemindAt] = useState<number | null>(initialRemindAt)
  const [copied, setCopied] = useState(false)
  const [busy, setBusy] = useState(false)

  const [reportOpen, setReportOpen] = useState(false)
  const [reportReason, setReportReason] = useState('')
  const [reportDetail, setReportDetail] = useState('')
  const [reportSent, setReportSent] = useState(false)

  const [remindPop, setRemindPop] = useState(false)
  const [editOpen, setEditOpen] = useState(false)

  const requireLogin = () => {
    window.location.href = loginHref
  }

  const toggleLike = async () => {
    if (!canAct) return requireLogin()
    if (busy) return
    setBusy(true)
    try {
      const res = await fetch('/api/forum/like', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ postId }),
      })
      const d = await res.json()
      if (d.ok) {
        setLiked(d.liked)
        setLikes(d.likes)
      }
    } finally {
      setBusy(false)
    }
  }

  const copyLink = async () => {
    const url = `${window.location.origin}${permalink}`
    try {
      await navigator.clipboard.writeText(url)
    } catch {
      /* sin clipboard API */
    }
    setCopied(true)
    setTimeout(() => setCopied(false), 1500)
  }

  const toggleBookmark = async () => {
    if (!canAct) return requireLogin()
    if (busy) return
    setBusy(true)
    try {
      const res = await fetch('/api/forum/bookmark', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ postId }),
      })
      const d = await res.json()
      if (d.ok) {
        setBookmarked(d.bookmarked)
        if (d.bookmarked) setRemindPop(true)
        else {
          setNote('')
          setRemindAt(null)
        }
      }
    } finally {
      setBusy(false)
    }
  }

  const saveReminder = async (when: number | null, closeAll = true) => {
    setBusy(true)
    try {
      const res = await fetch('/api/forum/bookmark-reminder', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ postId, note, remindAt: when }),
      })
      const d = await res.json()
      if (d.ok) {
        setBookmarked(true)
        setRemindAt(when)
        if (closeAll) {
          setRemindPop(false)
          setEditOpen(false)
        }
      }
    } finally {
      setBusy(false)
    }
  }

  const submitReport = async () => {
    if (!reportReason || busy) return
    setBusy(true)
    try {
      const res = await fetch('/api/forum/report', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ postId, reason: reportReason, detail: reportDetail }),
      })
      const d = await res.json()
      if (d.ok) {
        setReportSent(true)
        setTimeout(() => {
          setReportOpen(false)
          setReportSent(false)
          setReportReason('')
          setReportDetail('')
        }, 1200)
      }
    } finally {
      setBusy(false)
    }
  }

  const fmtRemind = (ts: number) => new Date(ts * 1000).toLocaleString(locale, { day: '2-digit', month: 'short', hour: '2-digit', minute: '2-digit' })

  return (
    <div className="post_actions">
      <button type="button" className={`pa-btn${liked ? ' liked' : ''}`} onClick={toggleLike} title={labels.like}>
        <i className={liked ? 'fa-solid fa-heart' : 'fa-regular fa-heart'} />
        {likes > 0 && <span className="pa-count">{likes}</span>}
      </button>

      <button type="button" className="pa-btn" onClick={copyLink} title={labels.copyLink}>
        <i className="fa-solid fa-link" />
        {copied && <span className="pa-toast">{labels.copied}</span>}
      </button>

      <button
        type="button"
        className="pa-btn"
        onClick={() => (canAct ? setReportOpen(true) : requireLogin())}
        title={labels.report}
      >
        <i className="fa-regular fa-flag" />
      </button>

      <div className="pa-bookmark-wrap">
        <button
          type="button"
          className={`pa-btn${bookmarked ? ' marked' : ''}`}
          onClick={() => (bookmarked ? setEditOpen(true) : toggleBookmark())}
          title={bookmarked ? labels.bookmarked : labels.bookmark}
        >
          <i className={bookmarked ? 'fa-solid fa-bookmark' : 'fa-regular fa-bookmark'} />
          {remindAt && <i className="fa-solid fa-clock pa-remind-dot" />}
        </button>

        {remindPop && (
          <div className="pa-reminder-pop">
            <div className="pa-reminder-head">
              <i className="fa-solid fa-circle-check" /> {labels.savedBookmark}
            </div>
            <div className="pa-reminder-q">{labels.reminderTitle}</div>
            <button type="button" onClick={() => saveReminder(Math.floor(Date.now() / 1000) + 7200)}>{labels.remind2h}</button>
            <button type="button" onClick={() => saveReminder(at8am(1))}>{labels.remindTomorrow}</button>
            <button type="button" onClick={() => saveReminder(at8am(3))}>{labels.remind3days}</button>
            <button type="button" className="pa-reminder-more" onClick={() => { setRemindPop(false); setEditOpen(true) }}>
              {labels.remindMore}
            </button>
          </div>
        )}
      </div>

      {/* Modal denuncia */}
      {reportOpen && (
        <div className="pa-overlay" onClick={() => setReportOpen(false)}>
          <div className="pa-modal" onClick={(e) => e.stopPropagation()}>
            <div className="pa-modal-head">
              <h3>{labels.reportTitle}</h3>
              <button type="button" className="pa-close" onClick={() => setReportOpen(false)}><i className="fa-solid fa-xmark" /></button>
            </div>
            {reportSent ? (
              <p className="pa-sent"><i className="fa-solid fa-circle-check" /> {labels.reportSent}</p>
            ) : (
              <>
                <p className="pa-modal-intro">{labels.reportIntro}</p>
                <div className="pa-reasons">
                  {reasons.map((r) => (
                    <label key={r.key} className={`pa-reason${reportReason === r.key ? ' active' : ''}`}>
                      <input type="radio" name={`report-${postId}`} value={r.key} checked={reportReason === r.key} onChange={() => setReportReason(r.key)} />
                      <span>
                        <b>{r.label}</b>
                        {r.desc && <em>{r.desc}</em>}
                      </span>
                    </label>
                  ))}
                </div>
                <textarea className="pa-report-detail" value={reportDetail} onChange={(e) => setReportDetail(e.target.value)} placeholder={labels.reportDetail} rows={2} />
                <div className="pa-modal-foot">
                  <button type="button" className="pa-primary" disabled={!reportReason || busy} onClick={submitReport}>
                    <i className="fa-solid fa-flag" /> {labels.reportSubmit}
                  </button>
                  <button type="button" className="pa-ghost" onClick={() => setReportOpen(false)}>{labels.cancel}</button>
                </div>
              </>
            )}
          </div>
        </div>
      )}

      {/* Modal editar marcador */}
      {editOpen && (
        <div className="pa-overlay" onClick={() => setEditOpen(false)}>
          <div className="pa-modal" onClick={(e) => e.stopPropagation()}>
            <div className="pa-modal-head">
              <h3>{labels.editTitle}</h3>
              <button type="button" className="pa-close" onClick={() => setEditOpen(false)}><i className="fa-solid fa-xmark" /></button>
            </div>
            <input className="pa-note" value={note} onChange={(e) => setNote(e.target.value)} placeholder={labels.notePlaceholder} />
            <div className="pa-reminder-label">{labels.reminderLabel}</div>
            <div className="pa-reminder-rows">
              <button type="button" className={!remindAt ? 'active' : ''} onClick={() => setRemindAt(null)}>{labels.rNone}</button>
              <button type="button" onClick={() => setRemindAt(at8am(1))}>{labels.rTomorrow}<span>{fmtRemind(at8am(1))}</span></button>
              <button type="button" onClick={() => setRemindAt(at8am(7))}>{labels.rNextWeek}<span>{fmtRemind(at8am(7))}</span></button>
              <button type="button" onClick={() => setRemindAt(at8am(30))}>{labels.rNextMonth}<span>{fmtRemind(at8am(30))}</span></button>
            </div>
            <label className="pa-custom">
              {labels.rCustom}
              <input
                type="datetime-local"
                onChange={(e) => {
                  const v = e.target.value ? Math.floor(new Date(e.target.value).getTime() / 1000) : null
                  setRemindAt(v)
                }}
              />
            </label>
            {remindAt && <div className="pa-remind-current"><i className="fa-solid fa-clock" /> {fmtRemind(remindAt)}</div>}
            <div className="pa-modal-foot">
              <button type="button" className="pa-primary" disabled={busy} onClick={() => saveReminder(remindAt)}>{labels.save}</button>
              <button type="button" className="pa-ghost" onClick={() => setEditOpen(false)}>{labels.cancel}</button>
              <button type="button" className="pa-danger" disabled={busy} onClick={toggleBookmark} title={labels.remove}>
                <i className="fa-solid fa-trash" />
              </button>
            </div>
          </div>
        </div>
      )}
    </div>
  )
}