import React from 'react'

const SOCIAL_ICONS = {
  twitter:    { icon: 'fa-brands fa-x-twitter',  label: 'X / Twitter' },
  deviantart: { icon: 'fa-brands fa-deviantart', label: 'DeviantArt' },
  instagram:  { icon: 'fa-brands fa-instagram',  label: 'Instagram' },
  behance:    { icon: 'fa-brands fa-behance',     label: 'Behance' },
  artstation: { icon: 'fa-solid fa-palette',      label: 'ArtStation' },
  youtube:    { icon: 'fa-brands fa-youtube',     label: 'YouTube' },
  website:    { icon: 'fa-solid fa-link',         label: 'Website' },
}

function InfoRow({ icon, label, children }) {
  return (
    <div className="flex items-start gap-3 py-2.5 border-b border-white/5 last:border-0">
      <i className={`fa-solid ${icon} fa-fw text-slate-500 mt-0.5 w-4 text-center`} />
      <div className="flex-1 min-w-0">
        <span className="text-xs text-slate-500 block mb-0.5">{label}</span>
        <div className="text-sm text-slate-200">{children}</div>
      </div>
    </div>
  )
}

/**
 * TabAbout
 * Bio, social links, metadata - replaces old sidebar profile card.
 */
export default function TabAbout({ user, profile, socialLinks, countryName, followerCount }) {
  const uname = user.username || user.name
  const displayName = user.name || uname
  const about = profile?.about
  const website = profile?.website

  const joinDate = user.created_at
    ? new Date(user.created_at).toLocaleDateString('en-US', { month: 'long', day: 'numeric', year: 'numeric' })
    : null

  const lastVisit = user.last_visit_at
    ? (() => {
        try {
          const d = new Date(user.last_visit_at)
          return d.toLocaleDateString('en-US', { month: 'short', day: 'numeric', year: 'numeric' })
        } catch { return null }
      })()
    : null

  const genderMap = { M: 'Male', F: 'Female', X: 'Non-binary / N/A' }
  const genderLabel = genderMap[profile?.gender?.toUpperCase()] ?? null

  const socialEntries = socialLinks
    ? Object.entries(socialLinks).filter(([, link]) => link?.url)
    : []

  return (
    <div
      id="tabpanel-about"
      role="tabpanel"
      aria-labelledby="tab-about"
      className="pt-6 max-w-2xl"
    >
      {/* Bio */}
      {about ? (
        <div className="bg-white/4 ring-1 ring-white/10 rounded-2xl p-5 mb-5 shadow-xl shadow-black/20 backdrop-blur">
          <h2 className="text-xs font-semibold uppercase tracking-widest text-slate-500 mb-3 flex items-center gap-2">
            <i className="fa-solid fa-quote-left text-purple-400 fa-fw" />
            About
          </h2>
          <p className="text-sm text-slate-300 leading-relaxed whitespace-pre-line">{about}</p>
        </div>
      ) : (
        <div className="bg-white/4 ring-1 ring-white/10 rounded-2xl p-5 mb-5 text-center text-slate-500 text-sm">
          No bio yet.
        </div>
      )}

      {/* Info card */}
      <div className="bg-white/4 ring-1 ring-white/10 rounded-2xl p-5 mb-5 shadow-xl shadow-black/20">
        <h2 className="text-xs font-semibold uppercase tracking-widest text-slate-500 mb-3 flex items-center gap-2">
          <i className="fa-solid fa-id-card text-sky-400 fa-fw" />
          Profile Info
        </h2>
        <div className="divide-y divide-white/5">
          {displayName && displayName !== uname && (
            <InfoRow icon="fa-user" label="Display name">{displayName}</InfoRow>
          )}
          <InfoRow icon="fa-at" label="Username">
            <span className="font-mono">@{uname}</span>
          </InfoRow>
          {genderLabel && (
            <InfoRow icon="fa-venus-mars" label="Gender">{genderLabel}</InfoRow>
          )}
          {countryName && (
            <InfoRow icon="fa-earth-americas" label="Country">
              <span className="flex items-center gap-2">
                {profile?.country_code && (
                  <img
                    src={`/gfx/flags/shiny/24/${encodeURIComponent(profile.country_code)}.png`}
                    alt={countryName}
                    className="w-4 h-auto rounded-sm"
                    onError={(e) => { e.target.style.display = 'none' }}
                  />
                )}
                {countryName}
              </span>
            </InfoRow>
          )}
          {website && (
            <InfoRow icon="fa-link" label="Website">
              <a
                href={website.startsWith('http') ? website : `https://${website}`}
                target="_blank"
                rel="nofollow noopener noreferrer"
                className="text-sky-400 hover:text-sky-300 hover:underline transition-colors"
              >
                {(() => {
                  try {
                    const url = website.startsWith('http') ? website : `https://${website}`
                    return new URL(url).hostname
                  } catch { return website }
                })()}
              </a>
            </InfoRow>
          )}
          {joinDate && (
            <InfoRow icon="fa-calendar-days" label="Member since">{joinDate}</InfoRow>
          )}
          {lastVisit && (
            <InfoRow icon="fa-clock" label="Last seen">{lastVisit}</InfoRow>
          )}
          <InfoRow icon="fa-users" label="Followers">{Number(followerCount).toLocaleString()}</InfoRow>
        </div>
      </div>

      {/* Social links */}
      {socialEntries.length > 0 && (
        <div className="bg-white/4 ring-1 ring-white/10 rounded-2xl p-5 shadow-xl shadow-black/20">
          <h2 className="text-xs font-semibold uppercase tracking-widest text-slate-500 mb-3 flex items-center gap-2">
            <i className="fa-solid fa-share-nodes text-sky-400 fa-fw" />
            Social Links
          </h2>
          <div className="flex flex-wrap gap-2">
            {socialEntries.map(([platform, link]) => {
              const si = SOCIAL_ICONS[platform] ?? { icon: 'fa-solid fa-link', label: platform }
              const href = link.url.startsWith('http') ? link.url : `https://${link.url}`
              return (
                <a
                  key={platform}
                  href={href}
                  target="_blank"
                  rel="nofollow noopener noreferrer"
                  className="inline-flex items-center gap-2 px-3 py-2 rounded-xl text-sm border border-white/10 text-slate-300 hover:text-white hover:bg-white/8 hover:border-sky-400/30 transition-all"
                  aria-label={si.label}
                >
                  <i className={`${si.icon} fa-fw`} />
                  <span>{si.label}</span>
                </a>
              )
            })}
          </div>
        </div>
      )}
    </div>
  )
}