import { useState } from 'react'
import { Link } from 'react-router-dom'
import { SectionBanner } from '@/components/ui/SectionBanner'
import { reports, type Report } from '@/data/reports'

const displayReports = reports.filter(r => !r.featured).slice(0, 6)

const typeLabel: Record<string, string> = {
  quarterly: 'گزارش فصلی',
  flash: 'فوری',
  risk: 'ریسک',
  free: 'رایگان',
  special: 'ویژه',
}

const dotColor: Record<string, string> = {
  quarterly: 'var(--ink)',
  flash: 'var(--red)',
  risk: 'var(--red)',
  free: 'var(--green-ink)',
  special: 'var(--amber)',
}

function formatPrice(n: number) {
  return n.toLocaleString('fa-IR')
}

interface ReportCardProps {
  report: Report
  colIndex: number
  rowIndex: number
  totalRows: number
}

function ReportCard({ report, colIndex, rowIndex, totalRows }: ReportCardProps) {
  const [hovered, setHovered] = useState(false)
  const isLastRow = rowIndex === totalRows - 1
  const isRightCol = colIndex === 0 // RTL: right col is index 0

  return (
    <div
      style={{
        padding: '40px',
        borderBottom: isLastRow ? 'none' : '1px solid var(--rule-thin)',
        borderLeft: isRightCol ? '1px solid var(--rule-thin)' : 'none',
        cursor: 'pointer',
        transition: 'background-color 150ms',
        backgroundColor: hovered ? 'var(--paper-2)' : 'transparent',
      }}
      onMouseEnter={() => setHovered(true)}
      onMouseLeave={() => setHovered(false)}
    >
      {/* Type badge */}
      <div
        style={{
          display: 'flex',
          alignItems: 'center',
          gap: '8px',
          marginBottom: '16px',
        }}
      >
        <div
          style={{
            width: '4px',
            height: '4px',
            borderRadius: '50%',
            backgroundColor: dotColor[report.type] ?? 'var(--ink)',
            flexShrink: 0,
          }}
        />
        <span
          style={{
            fontSize: '9px',
            textTransform: 'uppercase',
            letterSpacing: '2px',
            color: 'var(--ink-5)',
            fontWeight: 700,
          }}
        >
          {typeLabel[report.type] ?? report.type} · {report.category}
        </span>
      </div>

      {/* Title */}
      <Link to={`/reports/${report.id}`} style={{ textDecoration: 'none' }}>
        <h3
          style={{
            fontSize: 'clamp(18px, 2vw, 20px)',
            fontWeight: 800,
            lineHeight: 1.35,
            letterSpacing: '-0.3px',
            color: hovered ? 'var(--red)' : 'var(--ink)',
            marginBottom: '12px',
            transition: 'color 150ms',
            cursor: 'pointer',
          }}
        >
          {report.title}
        </h3>
      </Link>

      {/* Deck */}
      <p
        style={{
          fontSize: '13px',
          fontWeight: 300,
          color: 'var(--ink-3)',
          lineHeight: 1.8,
          marginBottom: '20px',
        }}
      >
        {report.summary.slice(0, 140)}
        {report.summary.length > 140 ? '…' : ''}
      </p>

      {/* Divider */}
      <div
        style={{
          height: '1px',
          backgroundColor: 'var(--rule-thin)',
          marginBottom: '16px',
        }}
      />

      {/* Footer row */}
      <div
        style={{
          display: 'flex',
          justifyContent: 'space-between',
          alignItems: 'flex-end',
          gap: '12px',
        }}
      >
        {/* Price block */}
        <div>
          {report.isFree ? (
            <span
              style={{
                fontSize: '16px',
                fontWeight: 900,
                color: 'var(--green-ink)',
              }}
            >
              دانلود رایگان
            </span>
          ) : (
            <span
              style={{
                fontSize: '16px',
                fontWeight: 900,
                color: 'var(--ink)',
              }}
            >
              {formatPrice(report.price)}
              <span
                style={{
                  fontSize: '11px',
                  fontWeight: 400,
                  color: 'var(--ink-4)',
                  marginRight: '4px',
                }}
              >
                تومان
              </span>
            </span>
          )}
          <div
            style={{
              fontSize: '10px',
              color: 'var(--ink-5)',
              marginTop: '3px',
            }}
          >
            {report.pages} صفحه · {report.publishDate}
          </div>
        </div>

        {/* Buy link */}
        <Link
          to={`/reports/${report.id}`}
          style={{
            fontSize: '10px',
            fontWeight: 700,
            textTransform: 'uppercase',
            letterSpacing: '2px',
            color: 'var(--red)',
            textDecoration: 'none',
            cursor: 'pointer',
            transition: 'text-decoration 150ms',
            whiteSpace: 'nowrap',
          }}
          onMouseEnter={e =>
            (e.currentTarget.style.textDecoration = 'underline')
          }
          onMouseLeave={e => (e.currentTarget.style.textDecoration = 'none')}
        >
          {report.isFree ? 'دانلود' : 'خرید گزارش'} ←
        </Link>
      </div>
    </div>
  )
}

export default function LatestReportsSection() {
  const rows = Math.ceil(displayReports.length / 2)

  return (
    <section
      style={{
        padding: '96px 48px',
        borderBottom: '2px solid var(--ink)',
        direction: 'rtl',
      }}
      className="max-md:px-6 max-md:py-16"
    >
      {/* Section header */}
      <div style={{ marginBottom: '40px' }}>
        <SectionBanner
          label="آخرین گزارش‌ها"
          link={{ text: 'مشاهده آرشیو کامل ←', to: '/reports' }}
        />
      </div>

      {/* 2-col grid */}
      <div
        style={{
          display: 'grid',
          gridTemplateColumns: 'repeat(2, 1fr)',
          border: '1px solid var(--rule-thin)',
          borderBottom: 'none',
          borderLeft: 'none',
        }}
        className="max-md:grid-cols-1"
      >
        {displayReports.map((report, idx) => {
          const colIndex = idx % 2
          const rowIndex = Math.floor(idx / 2)
          return (
            <ReportCard
              key={report.id}
              report={report}
              colIndex={colIndex}
              rowIndex={rowIndex}
              totalRows={rows}
            />
          )
        })}
      </div>
    </section>
  )
}