'use client'

import { useState } from 'react'
import { useRouter } from 'next/navigation'
import { useListings } from '@/hooks/useListings'
import { Badge, STATUS_COLORS } from '@/components/ui/Badge'
import { abbrev, fmtSol, fmtTok } from '@/lib/format'
import type { ListingAccountWithPda } from '@solisting/sdk'

type Filter = 'all' | 'active' | 'inactive'

function priceLabel(listing: ListingAccountWithPda['data']): string {
  const cur = listing.canonicalCurrency
  if (cur.__kind === 'Sol') return fmtSol(listing.price)
  return fmtTok(listing.price, cur.decimals, 'SPL')
}

export function ListingsTable() {
  const router = useRouter()
  const { data: listings = [], isLoading, error } = useListings()
  const [filter, setFilter] = useState<Filter>('all')
  const [sellerFilter, setSellerFilter] = useState('')

  const rows = listings.filter((l) => {
    if (filter === 'active' && !l.data.isActive) return false
    if (filter === 'inactive' && l.data.isActive) return false
    if (sellerFilter && !l.data.seller.toLowerCase().includes(sellerFilter.toLowerCase())) return false
    return true
  })

  if (isLoading) {
    return <div style={{ padding: 48, textAlign: 'center', color: 'var(--mut)' }}>Loading listings…</div>
  }
  if (error) {
    return <div style={{ padding: 48, textAlign: 'center', color: 'var(--danger)' }}>{String(error)}</div>
  }

  const FILTERS: { key: Filter; label: string }[] = [
    { key: 'all', label: 'All' },
    { key: 'active', label: 'Active' },
    { key: 'inactive', label: 'Inactive' },
  ]

  return (
    <div>
      {/* Header */}
      <div style={{ display: 'flex', alignItems: 'flex-end', justifyContent: 'space-between', gap: 16, marginBottom: 22, flexWrap: 'wrap' }}>
        <div>
          <h1 style={{ margin: 0, fontSize: 26, fontWeight: 700, letterSpacing: '-.02em' }}>Listings</h1>
          <p style={{ margin: '6px 0 0', fontSize: 13, color: 'var(--mut)' }}>
            {listings.length} ListingAccount PDAs · solisting program
          </p>
        </div>
        <div style={{ display: 'flex', gap: 10, alignItems: 'center' }}>
          <input
            value={sellerFilter}
            onChange={(e) => setSellerFilter(e.target.value)}
            placeholder="Filter by seller address"
            style={{ height: 38, width: 220, padding: '0 13px', background: 'var(--bg3)', border: '1px solid var(--bd)', borderRadius: 10, fontSize: 13, fontFamily: 'var(--font-mono)', outline: 'none' }}
          />
          <div style={{ display: 'flex', background: 'var(--bg3)', border: '1px solid var(--bd)', borderRadius: 10, padding: 3 }}>
            {FILTERS.map((f) => {
              const active = filter === f.key
              return (
                <button
                  key={f.key}
                  onClick={() => setFilter(f.key)}
                  style={{
                    padding: '6px 13px',
                    borderRadius: 7,
                    fontSize: 12.5,
                    fontWeight: 600,
                    color: active ? '#0b0613' : 'var(--mut)',
                    background: active ? 'linear-gradient(135deg,var(--acc),var(--acc2))' : 'transparent',
                    border: 'none',
                    cursor: 'pointer',
                  }}
                >
                  {f.label}
                </button>
              )
            })}
          </div>
        </div>
      </div>

      {/* Table */}
      <div style={{ background: 'var(--bg2)', border: '1px solid var(--bd)', borderRadius: 'var(--radius)', overflow: 'hidden' }}>
        <div style={{ display: 'grid', gridTemplateColumns: '2.4fr 1.1fr 1fr 1.1fr .8fr .9fr', gap: 14, padding: '13px 20px', borderBottom: '1px solid var(--bd)', fontSize: 10.5, fontWeight: 600, letterSpacing: '.12em', color: 'var(--mut)' }}>
          <div>LISTING</div><div>SELLER</div><div>PRICE</div><div>AVAIL / TOTAL</div><div>ORDERS</div><div style={{ textAlign: 'right' }}>STATUS</div>
        </div>

        {rows.length === 0 && (
          <div style={{ padding: 48, textAlign: 'center', color: 'var(--mut)', fontSize: 14 }}>
            No listings match these filters.
          </div>
        )}

        {rows.map((l) => {
          const avail = l.data.quantity - l.data.quantityReserved
          const statusKey = l.data.isActive ? 'active' : 'inactive'
          const sc = STATUS_COLORS[statusKey]
          return (
            <div
              key={l.address}
              onClick={() => router.push(`/listing/${l.address}`)}
              style={{ display: 'grid', gridTemplateColumns: '2.4fr 1.1fr 1fr 1.1fr .8fr .9fr', gap: 14, padding: '15px 20px', borderBottom: '1px solid var(--bdSoft)', cursor: 'pointer', alignItems: 'center' }}
            >
              <div style={{ minWidth: 0 }}>
                <div style={{ fontWeight: 600, fontSize: 14, whiteSpace: 'nowrap', overflow: 'hidden', textOverflow: 'ellipsis' }}>
                  {l.data.name || abbrev(l.address)}
                </div>
                <div style={{ fontFamily: 'var(--font-mono)', fontSize: 11, color: 'var(--mut)', marginTop: 3 }}>
                  #{String(l.data.listingId)} · {abbrev(l.address)}
                </div>
              </div>
              <div style={{ fontFamily: 'var(--font-mono)', fontSize: 12.5, color: 'var(--acc2light)' }}>
                {abbrev(l.data.seller)}
              </div>
              <div style={{ fontWeight: 600, fontSize: 13.5 }}>{priceLabel(l.data)}</div>
              <div style={{ fontSize: 13 }}>
                <span style={{ fontWeight: 600 }}>{avail}</span>
                <span style={{ color: 'var(--mut)' }}> / {l.data.quantity}</span>
              </div>
              <div style={{ fontSize: 13, color: 'var(--mut)' }}>{l.data.quantityReserved}</div>
              <div style={{ textAlign: 'right' }}>
                <Badge color={sc.color} bg={sc.bg}>{l.data.isActive ? 'Active' : 'Inactive'}</Badge>
              </div>
            </div>
          )
        })}
      </div>
    </div>
  )
}