import Image from 'next/image'
import Link from 'next/link'
import { cn, getImageUrl } from '@/lib/utils'
import { SeriesPill } from '@/components/ui'
import { getSeries } from '@/lib/api'
import { RichTextRenderer } from './RichTextRenderer'
import type { SeriesBlock as SeriesBlockType, Series } from '@/lib/types'

type SeriesBlockProps = Omit<SeriesBlockType, 'blockType'>

export async function SeriesBlock({
  title,
  subtitle,
  displayMode,
  selectedSeries,
  layout = 'grid',
  showDescription = true,
}: SeriesBlockProps) {
  // Fetch series if not using selected mode
  let items: Series[] = []

  if (displayMode === 'selected' && selectedSeries) {
    items = selectedSeries
  } else {
    const seriesData = await getSeries()
    items = seriesData.docs
  }

  if (!items || items.length === 0) return null

  return (
    <section className="py-16 md:py-20">
      <div className="container">
        {/* Section Header */}
        {(title || subtitle) && (
          <div className="text-center max-w-2xl mx-auto mb-12">
            {title && <h2 className="mb-4">{title}</h2>}
            {subtitle && (
              <p className="text-lg text-espresso/80">{subtitle}</p>
            )}
          </div>
        )}

        {/* Series */}
        {layout === 'featured' ? (
          <FeaturedLayout items={items} showDescription={showDescription} />
        ) : layout === 'list' ? (
          <ListLayout items={items} showDescription={showDescription} />
        ) : (
          <GridLayout items={items} showDescription={showDescription} />
        )}
      </div>
    </section>
  )
}

function GridLayout({
  items,
  showDescription,
}: {
  items: Series[]
  showDescription?: boolean
}) {
  return (
    <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
      {items.map((series) => (
        <SeriesCard
          key={series.id}
          series={series}
          showDescription={showDescription}
        />
      ))}
    </div>
  )
}

function ListLayout({
  items,
  showDescription,
}: {
  items: Series[]
  showDescription?: boolean
}) {
  return (
    <div className="max-w-4xl mx-auto space-y-6">
      {items.map((series) => (
        <Link
          key={series.id}
          href={`/serien/${series.slug}`}
          className="group block"
        >
          <article className="flex gap-6 bg-soft-white border border-warm-gray rounded-xl p-6 transition-all duration-300 hover:shadow-lg">
            {/* Logo/Image */}
            <div className="relative w-24 h-24 flex-shrink-0 rounded-lg overflow-hidden bg-ivory flex items-center justify-center">
              {series.logo ? (
                <Image
                  src={series.logo.url}
                  alt={series.title}
                  fill
                  className="object-contain p-2"
                />
              ) : series.coverImage ? (
                <Image
                  src={series.coverImage.url}
                  alt={series.title}
                  fill
                  className="object-cover"
                />
              ) : (
                <SeriesPill series={series.slug} size="lg">
                  {series.title.slice(0, 2).toUpperCase()}
                </SeriesPill>
              )}
            </div>

            {/* Content */}
            <div className="flex-1 min-w-0">
              <h3 className="text-xl font-semibold mb-2 group-hover:text-brass transition-colors">
                {series.title}
              </h3>
              {showDescription && series.description && (
                <div className="text-espresso/80 line-clamp-2">
                  <RichTextRenderer content={series.description} />
                </div>
              )}
            </div>
          </article>
        </Link>
      ))}
    </div>
  )
}

function FeaturedLayout({
  items,
  showDescription,
}: {
  items: Series[]
  showDescription?: boolean
}) {
  const [featured, ...rest] = items

  return (
    <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
      {/* Featured Series */}
      <Link
        href={`/serien/${featured.slug}`}
        className="group block lg:row-span-2"
      >
        <article
          className="relative h-full min-h-[400px] rounded-2xl overflow-hidden"
          style={{
            backgroundColor: featured.brandColor || '#C6A47E',
          }}
        >
          {featured.coverImage && (
            <Image
              src={featured.coverImage.url}
              alt={featured.title}
              fill
              className="object-cover opacity-30"
            />
          )}

          <div className="absolute inset-0 flex flex-col justify-end p-8">
            {featured.logo && (
              <div className="relative w-32 h-16 mb-4">
                <Image
                  src={featured.logo.url}
                  alt=""
                  fill
                  className="object-contain object-left"
                />
              </div>
            )}
            <h3 className="text-2xl lg:text-3xl font-semibold text-soft-white mb-3">
              {featured.title}
            </h3>
            {showDescription && featured.description && (
              <div className="text-soft-white/80 line-clamp-3">
                <RichTextRenderer content={featured.description} />
              </div>
            )}
          </div>
        </article>
      </Link>

      {/* Other Series */}
      <div className="space-y-6">
        {rest.slice(0, 3).map((series) => (
          <SeriesCard
            key={series.id}
            series={series}
            showDescription={false}
            compact
          />
        ))}
      </div>
    </div>
  )
}

interface SeriesCardProps {
  series: Series
  showDescription?: boolean
  compact?: boolean
}

function SeriesCard({ series, showDescription, compact }: SeriesCardProps) {
  const imageUrl = getImageUrl(series.coverImage) || getImageUrl(series.logo)

  return (
    <Link href={`/serien/${series.slug}`} className="group block">
      <article
        className={cn(
          'bg-soft-white border border-warm-gray rounded-2xl overflow-hidden transition-all duration-300 hover:-translate-y-1 hover:shadow-xl',
          compact && 'flex items-center gap-4 p-4'
        )}
      >
        {/* Image */}
        {!compact && (
          <div
            className="relative aspect-video"
            style={{ backgroundColor: series.brandColor || '#C6A47E' }}
          >
            {imageUrl && (
              <Image
                src={imageUrl}
                alt={series.title}
                fill
                className={cn(
                  series.logo ? 'object-contain p-8' : 'object-cover opacity-50'
                )}
              />
            )}
          </div>
        )}

        {compact && (
          <div
            className="relative w-16 h-16 flex-shrink-0 rounded-lg overflow-hidden flex items-center justify-center"
            style={{ backgroundColor: series.brandColor || '#C6A47E' }}
          >
            {series.logo ? (
              <Image
                src={series.logo.url}
                alt=""
                fill
                className="object-contain p-2"
              />
            ) : (
              <span className="text-soft-white font-bold text-lg">
                {series.title.slice(0, 2).toUpperCase()}
              </span>
            )}
          </div>
        )}

        {/* Content */}
        <div className={cn(!compact && 'p-6', compact && 'flex-1 min-w-0')}>
          <h3
            className={cn(
              'font-semibold group-hover:text-brass transition-colors',
              compact ? 'text-lg' : 'text-xl mb-2'
            )}
          >
            {series.title}
          </h3>
          {showDescription && !compact && series.description && (
            <div className="text-espresso/80 line-clamp-2">
              <RichTextRenderer content={series.description} />
            </div>
          )}
        </div>
      </article>
    </Link>
  )
}