import React, { useEffect, useMemo, useState } from 'react'
import { Head, Link, router, usePage } from '@inertiajs/react'
import AdminLayout from '../../../Layouts/AdminLayout'

const PROMPT_VIEW_STORAGE_KEY = 'skinbase.admin.academy.prompts.view'
const COURSE_VIEW_STORAGE_KEY = 'skinbase.admin.academy.courses.view'
const PROMPT_VIEW_OPTIONS = [
  { value: 'gallery', label: 'Gallery', icon: 'fa-images' },
  { value: 'grid', label: 'Grid', icon: 'fa-grid-2' },
  { value: 'table', label: 'Table', icon: 'fa-table-list' },
]
const COURSE_VIEW_OPTIONS = [
  { value: 'grid', label: 'Grid', icon: 'fa-grid-2' },
  { value: 'table', label: 'Table', icon: 'fa-table-list' },
]

function formatDateLabel(value) {
  if (!value) return 'Recently updated'

  const date = new Date(value)

  if (Number.isNaN(date.getTime())) return 'Recently updated'

  return new Intl.DateTimeFormat('en-GB', { day: 'numeric', month: 'short', year: 'numeric' }).format(date)
}

function paginationLabel(label) {
  return String(label || '')
    .replace(/&laquo;/g, 'Previous')
    .replace(/&raquo;/g, 'Next')
    .replace(/<[^>]+>/g, '')
    .trim()
}

function courseStatusMeta(status) {
  const normalized = String(status || 'draft')

  if (normalized === 'published') {
    return { label: 'Published', className: 'border-emerald-300/20 bg-emerald-300/10 text-emerald-100' }
  }

  if (normalized === 'review') {
    return { label: 'Review', className: 'border-amber-300/20 bg-amber-300/10 text-amber-100' }
  }

  if (normalized === 'archived') {
    return { label: 'Archived', className: 'border-white/10 bg-white/[0.04] text-slate-300' }
  }

  return { label: 'Draft', className: 'border-slate-500/20 bg-slate-500/10 text-slate-300' }
}

function courseAccessMeta(accessLevel) {
  const normalized = String(accessLevel || 'free')

  if (normalized === 'premium') {
    return { label: 'Premium', className: 'border-[#ffcfbf]/20 bg-[#ffcfbf]/10 text-[#fff0ea]' }
  }

  if (normalized === 'mixed') {
    return { label: 'Mixed', className: 'border-sky-300/20 bg-sky-300/10 text-sky-100' }
  }

  return { label: 'Free', className: 'border-white/10 bg-white/[0.05] text-slate-200' }
}

function courseSummary(items = [], summary = null) {
  if (summary && typeof summary === 'object') {
    return {
      total: Number(summary.total || 0),
      published: Number(summary.published || 0),
      featured: Number(summary.featured || 0),
      drafts: Number(summary.drafts || 0),
      visibleOnPage: Array.isArray(items) ? items.length : 0,
    }
  }

  return items.reduce((accumulator, item) => ({
    total: accumulator.total + 1,
    published: accumulator.published + (item.status === 'published' ? 1 : 0),
    featured: accumulator.featured + (item.is_featured ? 1 : 0),
    drafts: accumulator.drafts + (item.status === 'draft' ? 1 : 0),
    visibleOnPage: accumulator.visibleOnPage + 1,
  }), { total: 0, published: 0, featured: 0, drafts: 0, visibleOnPage: 0 })
}

function promptSummary(items = []) {
  return items.reduce((summary, item) => ({
    total: summary.total + 1,
    active: summary.active + (item.active ? 1 : 0),
    featured: summary.featured + (item.featured ? 1 : 0),
    promptOfWeek: summary.promptOfWeek + (item.prompt_of_week ? 1 : 0),
    comparisons: summary.comparisons + Number(item.comparisons_count || 0),
  }), { total: 0, active: 0, featured: 0, promptOfWeek: 0, comparisons: 0 })
}

function PromptFlag({ children, tone = 'default' }) {
  const toneClass = tone === 'warm'
    ? 'border-[#ffcfbf]/20 bg-[#ffcfbf]/10 text-[#fff0ea]'
    : tone === 'sky'
      ? 'border-sky-300/20 bg-sky-300/10 text-sky-100'
      : tone === 'emerald'
        ? 'border-emerald-300/20 bg-emerald-300/10 text-emerald-100'
        : 'border-white/10 bg-white/[0.05] text-slate-200'

  return <span className={`rounded-full border px-3 py-1 text-[11px] font-semibold uppercase tracking-[0.18em] ${toneClass}`}>{children}</span>
}

function CoursePill({ children, tone = 'default' }) {
  const toneClass = tone === 'warm'
    ? 'border-[#ffcfbf]/20 bg-[#ffcfbf]/10 text-[#fff0ea]'
    : tone === 'sky'
      ? 'border-sky-300/20 bg-sky-300/10 text-sky-100'
      : tone === 'emerald'
        ? 'border-emerald-300/20 bg-emerald-300/10 text-emerald-100'
        : 'border-white/10 bg-white/[0.05] text-slate-200'

  return <span className={`rounded-full border px-3 py-1 text-[11px] font-semibold uppercase tracking-[0.18em] ${toneClass}`}>{children}</span>
}

function CourseCover({ item, compact = false }) {
  if (item.cover_image_url) {
    return <img src={item.cover_image_url} alt={item.title} className={`h-full w-full object-cover transition duration-500 ${compact ? 'group-hover:scale-[1.04]' : 'group-hover:scale-[1.03]'}`} />
  }

  return (
    <div className="flex h-full items-center justify-center bg-[radial-gradient(circle_at_top_left,rgba(56,189,248,0.18),transparent_28%),radial-gradient(circle_at_bottom_right,rgba(255,207,191,0.18),transparent_24%),linear-gradient(135deg,rgba(15,23,42,0.98),rgba(30,41,59,0.94))] p-6 text-center text-slate-300">
      <div>
        <p className="text-[10px] font-semibold uppercase tracking-[0.2em] text-slate-500">Course cover</p>
        <p className="mt-3 text-sm font-semibold text-white">No cover image attached yet</p>
      </div>
    </div>
  )
}

function CourseCoverWall({ items = [] }) {
  const images = items
    .map((item) => item?.cover_image_url)
    .filter(Boolean)
    .slice(0, 4)

  if (!images.length) {
    return (
      <div className="flex min-h-[320px] items-center justify-center rounded-[32px] border border-white/10 bg-[radial-gradient(circle_at_top_left,rgba(56,189,248,0.14),transparent_24%),radial-gradient(circle_at_bottom_right,rgba(255,207,191,0.18),transparent_26%),linear-gradient(135deg,rgba(12,18,31,0.98),rgba(30,41,59,0.94))] px-8 text-center">
        <div>
          <p className="text-[11px] font-semibold uppercase tracking-[0.24em] text-slate-500">Course cover wall</p>
          <p className="mt-4 text-lg font-semibold text-white">Course artwork will appear here once covers are added.</p>
        </div>
      </div>
    )
  }

  return (
    <div className="space-y-3">
      <div className="overflow-hidden rounded-[30px] border border-white/10 bg-black/20 shadow-[0_18px_45px_rgba(2,6,23,0.2)]">
        <div className="aspect-[16/10] overflow-hidden">
          <img src={images[0]} alt="" aria-hidden="true" className="h-full w-full object-cover" />
        </div>
      </div>

      {images.length > 1 ? (
        <div className="grid grid-cols-2 gap-3">
          {images.slice(1, 4).map((image, index) => (
            <div
              key={`${image}-${index}`}
              className="aspect-square overflow-hidden rounded-[24px] border border-white/10 bg-black/20 shadow-[0_18px_45px_rgba(2,6,23,0.2)]"
            >
              <img src={image} alt="" aria-hidden="true" className="h-full w-full object-cover" />
            </div>
          ))}
        </div>
      ) : null}
    </div>
  )
}

function CourseStatCard({ label, value, tone = 'default' }) {
  const toneClass = tone === 'sky'
    ? 'border-sky-300/20 bg-sky-300/10 text-sky-100'
    : tone === 'emerald'
      ? 'border-emerald-300/20 bg-emerald-300/10 text-emerald-100'
      : tone === 'warm'
        ? 'border-[#ffcfbf]/20 bg-[#ffcfbf]/10 text-[#fff0ea]'
        : 'border-white/10 bg-black/20 text-slate-300'

  return (
    <div className={`rounded-[24px] border px-5 py-4 ${toneClass}`}>
      <p className="text-[10px] font-semibold uppercase tracking-[0.18em] opacity-70">{label}</p>
      <p className="mt-2 text-2xl font-semibold tracking-[-0.04em] text-white">{value}</p>
    </div>
  )
}

function PromptActions({ item }) {
  return (
    <div className="flex flex-wrap gap-3">
      {item.preview_url ? <Link href={item.preview_url} className="inline-flex items-center gap-2 rounded-full border border-[#ffcfbf]/20 bg-[#ffcfbf]/10 px-4 py-2 text-sm font-semibold text-[#fff0ea]"><i className="fa-solid fa-eye text-xs" />Preview</Link> : null}
      <Link href={item.edit_url} className="inline-flex items-center gap-2 rounded-full border border-white/10 bg-white/[0.04] px-4 py-2 text-sm font-semibold text-white"><i className="fa-solid fa-pen-to-square text-xs" />Edit</Link>
      <button type="button" onClick={() => { if (!window.confirm('Delete this prompt?')) return; router.delete(item.destroy_url, { preserveScroll: true }) }} className="inline-flex items-center gap-2 rounded-full border border-rose-300/20 bg-rose-300/10 px-4 py-2 text-sm font-semibold text-rose-100"><i className="fa-solid fa-trash text-xs" />Delete</button>
    </div>
  )
}

function CourseActions({ item }) {
  return (
    <div className="flex flex-wrap gap-3">
      <Link href={item.builder_url} className="inline-flex items-center gap-2 rounded-full border border-[#ffcfbf]/20 bg-[#ffcfbf]/10 px-4 py-2 text-sm font-semibold text-[#fff0ea]"><i className="fa-solid fa-sitemap text-xs" />Builder</Link>
      <Link href={item.edit_url} className="inline-flex items-center gap-2 rounded-full border border-white/10 bg-white/[0.04] px-4 py-2 text-sm font-semibold text-white"><i className="fa-solid fa-pen-to-square text-xs" />Edit</Link>
      <button type="button" onClick={() => { if (!window.confirm('Delete this course?')) return; router.delete(item.destroy_url, { preserveScroll: true }) }} className="inline-flex items-center gap-2 rounded-full border border-rose-300/20 bg-rose-300/10 px-4 py-2 text-sm font-semibold text-rose-100"><i className="fa-solid fa-trash text-xs" />Delete</button>
    </div>
  )
}

function CourseGridCard({ item }) {
  const status = courseStatusMeta(item.status)
  const access = courseAccessMeta(item.access_level)

  return (
    <article className="group overflow-hidden rounded-[30px] border border-white/[0.08] bg-[linear-gradient(180deg,rgba(255,255,255,0.04),rgba(15,23,42,0.18))] shadow-[0_18px_60px_rgba(2,6,23,0.18)]">
      <div className="relative h-56 overflow-hidden border-b border-white/10">
        <CourseCover item={item} compact />
        <div className="absolute inset-0 bg-[linear-gradient(180deg,rgba(2,6,23,0.02),rgba(2,6,23,0.34))]" />
      </div>

      <div className="p-5">
        <div className="flex flex-wrap gap-2">
          <CoursePill tone="warm">{item.lessons_count || 0} lessons</CoursePill>
          <CoursePill tone={item.is_featured ? 'sky' : 'default'}>{item.is_featured ? 'Featured' : 'Course'}</CoursePill>
          <span className={`rounded-full border px-3 py-1 text-[11px] font-semibold uppercase tracking-[0.18em] ${status.className}`}>{status.label}</span>
        </div>

        <h2 className="mt-4 text-xl font-semibold tracking-[-0.04em] text-white">{item.title}</h2>
        {item.subtitle ? <p className="mt-2 text-sm leading-6 text-slate-300">{item.subtitle}</p> : null}
        <p className="mt-3 text-sm leading-7 text-slate-300">{item.excerpt || 'No excerpt added yet.'}</p>

        <div className="mt-5 flex items-center justify-between gap-3 text-sm text-slate-400">
          <span>{access.label}</span>
          <span>{formatDateLabel(item.updated_at)}</span>
        </div>

        <div className="mt-5">
          <CourseActions item={item} />
        </div>
      </div>
    </article>
  )
}

function CourseTable({ items }) {
  return (
    <div className="overflow-hidden rounded-[30px] border border-white/[0.08] bg-[linear-gradient(180deg,rgba(15,23,42,0.92),rgba(2,6,23,0.92))] shadow-[0_24px_80px_rgba(2,6,23,0.22)]">
      <div className="overflow-x-auto">
        <table className="min-w-full divide-y divide-white/10 text-left">
          <thead className="bg-white/[0.04] text-[11px] font-semibold uppercase tracking-[0.22em] text-slate-400">
            <tr>
              <th className="px-5 py-4">Cover</th>
              <th className="px-5 py-4">Course</th>
              <th className="px-5 py-4">Access</th>
              <th className="px-5 py-4">Status</th>
              <th className="px-5 py-4">Lessons</th>
              <th className="px-5 py-4">Updated</th>
              <th className="px-5 py-4 text-right">Actions</th>
            </tr>
          </thead>
          <tbody className="divide-y divide-white/10 text-sm text-slate-200">
            {items.map((item) => {
              const status = courseStatusMeta(item.status)
              const access = courseAccessMeta(item.access_level)

              return (
                <tr key={item.id} className="align-top transition hover:bg-white/[0.03]">
                  <td className="px-5 py-4">
                    <div className="h-20 w-28 overflow-hidden rounded-2xl border border-white/10 bg-black/30">
                      <CourseCover item={item} compact />
                    </div>
                  </td>
                  <td className="px-5 py-4">
                    <div>
                      <p className="font-semibold text-white">{item.title}</p>
                      {item.subtitle ? <p className="mt-1 max-w-md text-sm leading-6 text-slate-400">{item.subtitle}</p> : null}
                      <p className="mt-2 max-w-xl text-sm leading-6 text-slate-400">{item.excerpt || 'No excerpt added yet.'}</p>
                    </div>
                  </td>
                  <td className="px-5 py-4"><span className={`inline-flex rounded-full border px-3 py-1 text-xs font-semibold ${access.className}`}>{access.label}</span></td>
                  <td className="px-5 py-4"><span className={`inline-flex rounded-full border px-3 py-1 text-xs font-semibold ${status.className}`}>{status.label}</span></td>
                  <td className="px-5 py-4">
                    <div className="space-y-1 text-white">
                      <p>{item.lessons_count || 0} lessons</p>
                      <p>{item.is_featured ? 'Featured' : 'Standard'}</p>
                    </div>
                  </td>
                  <td className="px-5 py-4">{formatDateLabel(item.updated_at)}</td>
                  <td className="px-5 py-4">
                    <div className="flex justify-end gap-2">
                      <Link href={item.builder_url} className="rounded-full border border-[#ffcfbf]/20 bg-[#ffcfbf]/10 px-3 py-2 text-xs font-semibold text-[#fff0ea]">Builder</Link>
                      <Link href={item.edit_url} className="rounded-full border border-white/10 bg-white/[0.04] px-3 py-2 text-xs font-semibold text-white">Edit</Link>
                    </div>
                  </td>
                </tr>
              )
            })}
          </tbody>
        </table>
      </div>
    </div>
  )
}

function CourseSearchBar({ value, onChange, onSubmit, onClear, viewMode, onViewModeChange }) {
  return (
    <div className="rounded-[28px] border border-white/10 bg-white/[0.03] p-4 shadow-[0_18px_50px_rgba(2,6,23,0.14)]">
      <div className="flex flex-col gap-4 xl:flex-row xl:items-center xl:justify-between">
        <form onSubmit={onSubmit} className="flex flex-1 flex-col gap-3 sm:flex-row sm:items-center">
          <div className="relative flex-1 max-w-2xl">
            <i className="fa-solid fa-magnifying-glass absolute left-3.5 top-1/2 -translate-y-1/2 text-xs text-slate-500" />
            <input
              name="search"
              value={value}
              onChange={(event) => onChange(event.target.value)}
              placeholder="Search title, slug, subtitle, excerpt, or description…"
              className="w-full rounded-2xl border border-white/10 bg-black/20 py-3 pl-9 pr-4 text-sm text-white placeholder:text-slate-600 focus:border-white/20 focus:outline-none focus:ring-1 focus:ring-white/10"
            />
          </div>
          <button type="submit" className="rounded-2xl bg-sky-300/12 px-4 py-3 text-sm font-semibold text-sky-100 transition hover:bg-sky-300/16">
            Search
          </button>
          {value ? (
            <button type="button" onClick={onClear} className="rounded-2xl border border-white/10 bg-white/[0.04] px-4 py-3 text-sm font-semibold text-white/80 transition hover:bg-white/[0.08]">
              Clear
            </button>
          ) : null}
        </form>

        <div className="flex flex-wrap items-center gap-2">
          {COURSE_VIEW_OPTIONS.map((option) => {
            const active = option.value === viewMode

            return (
              <button
                key={option.value}
                type="button"
                onClick={() => onViewModeChange(option.value)}
                className={`inline-flex items-center gap-2 rounded-full border px-4 py-2.5 text-sm font-semibold transition ${active ? 'border-sky-300/25 bg-sky-300/12 text-sky-100' : 'border-white/10 bg-white/[0.04] text-slate-200 hover:border-white/20 hover:bg-white/[0.07]'}`}
              >
                <i className={`fa-solid ${option.icon} text-xs`} />
                <span>{option.label}</span>
              </button>
            )
          })}
        </div>
      </div>
    </div>
  )
}

function PromptPreview({ item, compact = false }) {
  if (item.preview_image_url) {
    return <img src={item.preview_image_url} alt={item.title} className={`h-full w-full object-cover transition duration-500 ${compact ? 'group-hover:scale-[1.04]' : 'group-hover:scale-[1.03]'}`} />
  }

  return (
    <div className="flex h-full items-center justify-center bg-[radial-gradient(circle_at_top_left,rgba(56,189,248,0.18),transparent_30%),linear-gradient(135deg,rgba(15,23,42,0.98),rgba(30,41,59,0.94))] p-6 text-center text-slate-300">
      <div>
        <p className="text-[10px] font-semibold uppercase tracking-[0.2em] text-slate-500">Prompt preview</p>
        <p className="mt-3 text-sm font-semibold text-white">No image attached yet</p>
      </div>
    </div>
  )
}

function PromptMeta({ item }) {
  return (
    <div className="flex flex-wrap gap-2">
      {item.category_name ? <PromptFlag tone="warm">{item.category_name}</PromptFlag> : null}
      {item.difficulty ? <PromptFlag>{item.difficulty}</PromptFlag> : null}
      {item.access_level ? <PromptFlag>{item.access_level}</PromptFlag> : null}
      {item.aspect_ratio ? <PromptFlag>{item.aspect_ratio}</PromptFlag> : null}
      {item.featured ? <PromptFlag tone="sky">Featured</PromptFlag> : null}
      {item.prompt_of_week ? <PromptFlag tone="emerald">Prompt of week</PromptFlag> : null}
      <PromptFlag tone={item.active ? 'sky' : 'default'}>{item.active ? 'Active' : 'Draft'}</PromptFlag>
    </div>
  )
}

function PromptGalleryCard({ item }) {
  return (
    <article className="group overflow-hidden rounded-[30px] border border-white/[0.08] bg-[linear-gradient(135deg,rgba(8,15,28,0.98),rgba(15,23,42,0.92))] shadow-[0_24px_80px_rgba(2,6,23,0.24)]">
      <div className="grid gap-0 xl:grid-cols-[340px_minmax(0,1fr)]">
        <div className="relative min-h-[250px] overflow-hidden border-b border-white/10 xl:min-h-full xl:border-b-0 xl:border-r xl:border-white/10">
          <PromptPreview item={item} />
          <div className="absolute inset-0 bg-[linear-gradient(180deg,rgba(2,6,23,0.04),rgba(2,6,23,0.32))]" />
          <div className="absolute left-4 top-4 flex flex-wrap gap-2">
            <PromptFlag tone="warm">{item.comparisons_count || 0} comparisons</PromptFlag>
            {item.slug ? <PromptFlag>{item.slug}</PromptFlag> : null}
          </div>
        </div>

        <div className="flex h-full flex-col justify-between p-6 lg:p-7">
          <div>
            <PromptMeta item={item} />
            <h2 className="mt-4 text-2xl font-semibold tracking-[-0.04em] text-white">{item.title}</h2>
            <p className="mt-3 max-w-3xl text-sm leading-7 text-slate-300">{item.excerpt || 'Add an excerpt to make this prompt easier to scan in moderation.'}</p>

            {item.tags?.length ? (
              <div className="mt-5 flex flex-wrap gap-2">
                {item.tags.slice(0, 5).map((tag) => (
                  <span key={tag} className="rounded-full border border-white/10 bg-black/20 px-3 py-1 text-xs font-semibold uppercase tracking-[0.18em] text-slate-300">{tag}</span>
                ))}
              </div>
            ) : null}
          </div>

          <div className="mt-6 flex flex-wrap items-center justify-between gap-4 border-t border-white/10 pt-5">
            <div className="grid gap-3 sm:grid-cols-3">
              <div>
                <p className="text-[10px] font-semibold uppercase tracking-[0.2em] text-slate-500">Updated</p>
                <p className="mt-1 text-sm font-semibold text-white">{formatDateLabel(item.updated_at)}</p>
              </div>
              <div>
                <p className="text-[10px] font-semibold uppercase tracking-[0.2em] text-slate-500">Access</p>
                <p className="mt-1 text-sm font-semibold text-white">{item.access_level || 'free'}</p>
              </div>
              <div>
                <p className="text-[10px] font-semibold uppercase tracking-[0.2em] text-slate-500">Status</p>
                <p className="mt-1 text-sm font-semibold text-white">{item.active ? 'Visible' : 'Hidden'}</p>
              </div>
            </div>

            <PromptActions item={item} />
          </div>
        </div>
      </div>
    </article>
  )
}

function PromptGridCard({ item }) {
  return (
    <article className="group overflow-hidden rounded-[28px] border border-white/[0.08] bg-[linear-gradient(180deg,rgba(255,255,255,0.04),rgba(15,23,42,0.18))] shadow-[0_18px_60px_rgba(2,6,23,0.18)]">
      <div className="relative h-52 overflow-hidden border-b border-white/10">
        <PromptPreview item={item} compact />
        <div className="absolute inset-0 bg-[linear-gradient(180deg,rgba(2,6,23,0.02),rgba(2,6,23,0.34))]" />
      </div>
      <div className="p-5">
        <PromptMeta item={item} />
        <h2 className="mt-4 text-xl font-semibold tracking-[-0.04em] text-white">{item.title}</h2>
        <p className="mt-3 text-sm leading-7 text-slate-300">{item.excerpt || 'No excerpt added yet.'}</p>
        <div className="mt-5 flex items-center justify-between gap-3 text-sm text-slate-400">
          <span>{formatDateLabel(item.updated_at)}</span>
          <span>{item.comparisons_count || 0} comparisons</span>
        </div>
        <div className="mt-5">
          <PromptActions item={item} />
        </div>
      </div>
    </article>
  )
}

function PromptTable({ items }) {
  return (
    <div className="overflow-hidden rounded-[30px] border border-white/[0.08] bg-[linear-gradient(180deg,rgba(15,23,42,0.92),rgba(2,6,23,0.92))] shadow-[0_24px_80px_rgba(2,6,23,0.22)]">
      <div className="overflow-x-auto">
        <table className="min-w-full divide-y divide-white/10 text-left">
          <thead className="bg-white/[0.04] text-[11px] font-semibold uppercase tracking-[0.22em] text-slate-400">
            <tr>
              <th className="px-5 py-4">Prompt</th>
              <th className="px-5 py-4">Category</th>
              <th className="px-5 py-4">Access</th>
              <th className="px-5 py-4">Signals</th>
              <th className="px-5 py-4">Updated</th>
              <th className="px-5 py-4 text-right">Actions</th>
            </tr>
          </thead>
          <tbody className="divide-y divide-white/10 text-sm text-slate-200">
            {items.map((item) => (
              <tr key={item.id} className="align-top transition hover:bg-white/[0.03]">
                <td className="px-5 py-4">
                  <div className="flex gap-4">
                    <div className="h-16 w-20 overflow-hidden rounded-2xl border border-white/10 bg-black/30 shrink-0">
                      <PromptPreview item={item} compact />
                    </div>
                    <div>
                      <p className="font-semibold text-white">{item.title}</p>
                      <p className="mt-1 max-w-md text-sm leading-6 text-slate-400">{item.excerpt || 'No excerpt added yet.'}</p>
                    </div>
                  </div>
                </td>
                <td className="px-5 py-4">{item.category_name || 'Uncategorized'}</td>
                <td className="px-5 py-4">{item.access_level || 'free'}</td>
                <td className="px-5 py-4">
                  <div className="space-y-1">
                    <p>{item.comparisons_count || 0} comparisons</p>
                    <p>{item.difficulty || 'No difficulty'}</p>
                    <p>{item.active ? 'Active' : 'Draft'}</p>
                  </div>
                </td>
                <td className="px-5 py-4">{formatDateLabel(item.updated_at)}</td>
                <td className="px-5 py-4">
                  <div className="flex justify-end gap-2">
                    {item.preview_url ? <Link href={item.preview_url} className="rounded-full border border-[#ffcfbf]/20 bg-[#ffcfbf]/10 px-3 py-2 text-xs font-semibold text-[#fff0ea]">Preview</Link> : null}
                    <Link href={item.edit_url} className="rounded-full border border-white/10 bg-white/[0.04] px-3 py-2 text-xs font-semibold text-white">Edit</Link>
                  </div>
                </td>
              </tr>
            ))}
          </tbody>
        </table>
      </div>
    </div>
  )
}

function PromptHeroCollage({ items = [] }) {
  const images = items
    .map((item) => item?.preview_image_url)
    .filter(Boolean)
    .slice(0, 4)

  if (!images.length) {
    return (
      <div className="flex min-h-[320px] items-center justify-center rounded-[32px] border border-white/10 bg-[radial-gradient(circle_at_top_left,rgba(56,189,248,0.14),transparent_24%),radial-gradient(circle_at_bottom_right,rgba(255,207,191,0.18),transparent_26%),linear-gradient(135deg,rgba(12,18,31,0.98),rgba(30,41,59,0.94))] px-8 text-center">
        <div>
          <p className="text-[11px] font-semibold uppercase tracking-[0.24em] text-slate-500">Prompt preview wall</p>
          <p className="mt-4 text-lg font-semibold text-white">Preview images will appear here as prompts get covers.</p>
        </div>
      </div>
    )
  }

  return (
    <div className="space-y-3">
      <div className="overflow-hidden rounded-[30px] border border-white/10 bg-black/20 shadow-[0_18px_45px_rgba(2,6,23,0.2)]">
        <div className="aspect-[16/10] overflow-hidden">
          <img src={images[0]} alt="" aria-hidden="true" className="h-full w-full object-cover" />
        </div>
      </div>

      {images.length > 1 ? (
        <div className="grid grid-cols-2 gap-3">
          {images.slice(1, 4).map((image, index) => (
            <div
              key={`${image}-${index}`}
              className="overflow-hidden rounded-[24px] border border-white/10 bg-black/20 shadow-[0_18px_45px_rgba(2,6,23,0.2)] aspect-square"
            >
              <img src={image} alt="" aria-hidden="true" className="h-full w-full object-cover" />
            </div>
          ))}
        </div>
      ) : null}
    </div>
  )

}
function CourseIndexContent({ title, subtitle, items, createUrl, filters = {}, summary = {} }) {
  const { url } = usePage()
  const courses = items?.data || []
  const [viewMode, setViewMode] = useState('grid')
  const [searchValue, setSearchValue] = useState(filters.search || '')

  useEffect(() => {
    setSearchValue(filters.search || '')
  }, [filters.search])

  useEffect(() => {
    if (typeof window === 'undefined') return

    const storedView = window.localStorage.getItem(COURSE_VIEW_STORAGE_KEY)
    if (COURSE_VIEW_OPTIONS.some((option) => option.value === storedView)) {
      setViewMode(storedView)
    }
  }, [])

  useEffect(() => {
    if (typeof window === 'undefined') return
    window.localStorage.setItem(COURSE_VIEW_STORAGE_KEY, viewMode)
  }, [viewMode])

  const stats = useMemo(() => courseSummary(courses, summary), [courses, summary])
  const currentPath = url.split('?')[0]
  const hasSearch = Boolean(searchValue.trim())
  const meta = items?.meta || {}

  const handleSearch = (event) => {
    event.preventDefault()
    router.get(currentPath, { search: searchValue.trim() || undefined }, { preserveScroll: true, preserveState: true, replace: true })
  }

  const handleClearSearch = () => {
    setSearchValue('')
    router.get(currentPath, {}, { preserveScroll: true, preserveState: true, replace: true })
  }

  return (
    <div className="space-y-6">
      <section className="overflow-hidden rounded-[38px] border border-white/[0.08] bg-[radial-gradient(circle_at_top_left,rgba(56,189,248,0.16),transparent_24%),radial-gradient(circle_at_bottom_right,rgba(255,207,191,0.16),transparent_24%),linear-gradient(135deg,rgba(4,9,18,0.98),rgba(15,23,42,0.92))] shadow-[0_28px_90px_rgba(2,6,23,0.28)]">
        <div className="grid gap-8 p-6 xl:grid-cols-[minmax(0,1fr)_360px] xl:items-start xl:p-10">
          <div>
            <div className="flex flex-wrap gap-2">
              <span className="rounded-full border border-[#ffcfbf]/20 bg-[#ffcfbf]/10 px-3 py-1 text-[11px] font-semibold uppercase tracking-[0.24em] text-[#fff0ea]">Academy moderation</span>
              <span className="rounded-full border border-white/10 bg-white/[0.05] px-3 py-1 text-[11px] font-semibold uppercase tracking-[0.24em] text-slate-300">Course library</span>
            </div>

            <h2 className="mt-5 max-w-4xl text-4xl font-semibold tracking-[-0.055em] text-white md:text-5xl xl:text-6xl">{title}</h2>
            <p className="mt-5 max-w-3xl text-base leading-8 text-slate-300 md:text-lg">{subtitle} Search courses quickly, switch between grid and table views, and jump into editing with a cleaner visual overview of covers, status, and lesson counts.</p>

            <div className="mt-7 grid gap-3 sm:grid-cols-2 xl:grid-cols-4">
              <CourseStatCard label="Total" value={stats.total} tone="sky" />
              <CourseStatCard label="Published" value={stats.published} tone="emerald" />
              <CourseStatCard label="Featured" value={stats.featured} tone="warm" />
              <CourseStatCard label="Drafts" value={stats.drafts} />
            </div>

            <div className="mt-7 flex flex-wrap gap-3">
              <Link href={createUrl} className="inline-flex items-center gap-2 whitespace-nowrap rounded-full border border-sky-300/25 bg-sky-300/12 px-5 py-3 text-sm font-semibold text-sky-100"><i className="fa-solid fa-plus text-xs" />Create course</Link>
              <Link href="/academy/courses" className="inline-flex items-center gap-2 whitespace-nowrap rounded-full border border-white/10 bg-white/[0.04] px-5 py-3 text-sm font-semibold text-white/85"><i className="fa-solid fa-book-open text-xs" />Open public courses</Link>
              <span className="inline-flex items-center gap-2 whitespace-nowrap rounded-full border border-white/10 bg-white/[0.04] px-5 py-3 text-sm font-semibold text-white/85"><i className="fa-solid fa-layer-group text-xs" />{meta.total || courses.length} courses in view</span>
            </div>
          </div>

          <div className="xl:pt-2">
            <CourseCoverWall items={courses} />
          </div>
        </div>
      </section>

      <CourseSearchBar
        value={searchValue}
        onChange={setSearchValue}
        onSubmit={handleSearch}
        onClear={handleClearSearch}
        viewMode={viewMode}
        onViewModeChange={setViewMode}
      />

      <div className="flex flex-wrap items-center justify-between gap-4">
        <p className="text-sm text-slate-400">
          {meta.total ? (
            <>
              Showing {meta.from || 0}-{meta.to || 0} of {meta.total} courses
              {hasSearch ? <span className="ml-2 text-sky-200">filtered by “{searchValue.trim()}”</span> : null}
            </>
          ) : (
            'Manage Academy courses below. Changes clear Academy cache automatically.'
          )}
        </p>
        <div className="flex flex-wrap gap-3">
          <Link href={createUrl} className="inline-flex items-center gap-2 rounded-full border border-sky-300/25 bg-sky-300/12 px-5 py-3 text-sm font-semibold text-sky-100"><i className="fa-solid fa-plus text-xs" />Create course</Link>
        </div>
      </div>

      {courses.length === 0 ? (
        <div className="rounded-[28px] border border-white/[0.08] bg-white/[0.03] px-6 py-12 text-center text-slate-400">
          {hasSearch ? (
            <div className="space-y-3">
              <p className="text-lg font-semibold text-white">No courses matched your search.</p>
              <button type="button" onClick={handleClearSearch} className="rounded-full border border-white/10 bg-white/[0.04] px-4 py-2 text-sm font-semibold text-white">Clear search</button>
            </div>
          ) : (
            <div className="space-y-3">
              <p className="text-lg font-semibold text-white">No courses exist yet.</p>
              <Link href={createUrl} className="inline-flex items-center gap-2 rounded-full border border-sky-300/25 bg-sky-300/12 px-4 py-2 text-sm font-semibold text-sky-100"><i className="fa-solid fa-plus text-xs" />Create the first course</Link>
            </div>
          )}
        </div>
      ) : viewMode === 'table' ? (
        <CourseTable items={courses} />
      ) : (
        <div className="grid gap-5 md:grid-cols-2 2xl:grid-cols-3">
          {courses.map((item) => <CourseGridCard key={item.id} item={item} />)}
        </div>
      )}

      <PaginationLinks links={items?.links} />
    </div>
  )
}

function PaginationLinks({ links = [] }) {
  if (!Array.isArray(links) || links.length <= 3) return null

  return (
    <div className="mt-8 flex flex-wrap gap-2">
      {links.map((link, index) => {
        const label = paginationLabel(link.label)
        const className = link.active
          ? 'border-sky-300/25 bg-sky-300/12 text-sky-100'
          : 'border-white/10 bg-white/[0.04] text-slate-200 hover:border-white/20 hover:bg-white/[0.07]'

        return link.url ? (
          <Link key={`${label}-${index}`} href={link.url} className={`rounded-full border px-4 py-2 text-sm font-semibold transition ${className}`} preserveScroll>
            {label}
          </Link>
        ) : (
          <span key={`${label}-${index}`} className="rounded-full border border-white/10 bg-black/20 px-4 py-2 text-sm font-semibold text-slate-500">{label}</span>
        )
      })}
    </div>
  )
}

function renderCrudCell(column, item) {
  if (column === 'active') {
    const active = Boolean(item.active)

    return (
      <span className={`inline-flex items-center gap-2 rounded-full border px-3 py-1 text-xs font-semibold uppercase tracking-[0.16em] ${active ? 'border-emerald-300/20 bg-emerald-300/10 text-emerald-100' : 'border-white/10 bg-white/[0.04] text-slate-300'}`}>
        <i className={`fa-solid ${active ? 'fa-circle-check' : 'fa-circle-minus'} text-[11px]`} />
        <span>{active ? 'Active' : 'Inactive'}</span>
      </span>
    )
  }

  if (column === 'course_names') {
    const courseNames = Array.isArray(item.course_names) ? item.course_names.filter(Boolean) : []

    if (courseNames.length === 0) {
      return <span className="text-sm text-slate-400">Not attached</span>
    }

    return (
      <div className="flex flex-wrap gap-2">
        {courseNames.map((courseName) => (
          <span key={courseName} className="rounded-full border border-white/10 bg-white/[0.04] px-3 py-1 text-xs font-semibold text-slate-200">{courseName}</span>
        ))}
      </div>
    )
  }

  if (column === 'course_order') {
    return <span className="text-sm text-white">{item.course_order ?? 'Not set'}</span>
  }

  return <p className="mt-1 text-sm text-white">{String(item[column] ?? '')}</p>
}

function PromptIndexContent({ title, subtitle, items, createUrl }) {
  const promptItems = items?.data || []
  const summary = promptSummary(promptItems)
  const [viewMode, setViewMode] = useState('gallery')

  useEffect(() => {
    if (typeof window === 'undefined') return

    const storedView = window.localStorage.getItem(PROMPT_VIEW_STORAGE_KEY)
    if (PROMPT_VIEW_OPTIONS.some((option) => option.value === storedView)) {
      setViewMode(storedView)
    }
  }, [])

  useEffect(() => {
    if (typeof window === 'undefined') return
    window.localStorage.setItem(PROMPT_VIEW_STORAGE_KEY, viewMode)
  }, [viewMode])

  return (
    <div className="space-y-6">
      <section className="overflow-hidden rounded-[38px] border border-white/[0.08] bg-[radial-gradient(circle_at_top_left,rgba(56,189,248,0.16),transparent_24%),radial-gradient(circle_at_bottom_right,rgba(255,207,191,0.16),transparent_24%),linear-gradient(135deg,rgba(4,9,18,0.98),rgba(15,23,42,0.92))] shadow-[0_28px_90px_rgba(2,6,23,0.28)]">
        <div className="grid gap-8 p-6 xl:grid-cols-[minmax(0,1fr)_360px] xl:items-start xl:p-10">
          <div>
            <div className="flex flex-wrap gap-2">
              <span className="rounded-full border border-[#ffcfbf]/20 bg-[#ffcfbf]/10 px-3 py-1 text-[11px] font-semibold uppercase tracking-[0.24em] text-[#fff0ea]">Academy moderation</span>
              <span className="rounded-full border border-white/10 bg-white/[0.05] px-3 py-1 text-[11px] font-semibold uppercase tracking-[0.24em] text-slate-300">Prompt library</span>
            </div>

            <h2 className="mt-5 max-w-4xl text-4xl font-semibold tracking-[-0.055em] text-white md:text-5xl xl:text-6xl">{title}</h2>
            <p className="mt-5 max-w-3xl text-base leading-8 text-slate-300 md:text-lg">{subtitle} Review prompts in a visual-first moderation surface, jump into edits quickly, and switch between gallery, grid, or table depending on the task in front of you.</p>

            <div className="mt-7 grid gap-3 sm:grid-cols-3">
              <div className="rounded-[24px] border border-white/10 bg-black/20 px-5 py-4">
                <p className="text-[10px] font-semibold uppercase tracking-[0.18em] text-slate-500">Visual-first</p>
                <p className="mt-2 text-sm font-semibold text-white">Curate covers and prompt outputs before opening the form.</p>
              </div>
              <div className="rounded-[24px] border border-white/10 bg-black/20 px-5 py-4">
                <p className="text-[10px] font-semibold uppercase tracking-[0.18em] text-slate-500">Workflow-ready</p>
                <p className="mt-2 text-sm font-semibold text-white">Switch between gallery, compact cards, and scan-heavy tables.</p>
              </div>
              <div className="rounded-[24px] border border-white/10 bg-black/20 px-5 py-4">
                <p className="text-[10px] font-semibold uppercase tracking-[0.18em] text-slate-500">Comparison-aware</p>
                <p className="mt-2 text-sm font-semibold text-white">Spot prompts with provider notes and attached result references.</p>
              </div>
            </div>

            <div className="mt-6 flex flex-wrap gap-3">
              {PROMPT_VIEW_OPTIONS.map((option) => {
                const active = option.value === viewMode

                return (
                  <button
                    key={option.value}
                    type="button"
                    onClick={() => setViewMode(option.value)}
                    className={`inline-flex items-center gap-2 rounded-full border px-4 py-2 text-sm font-semibold transition ${active ? 'border-sky-300/25 bg-sky-300/12 text-sky-100' : 'border-white/10 bg-white/[0.04] text-slate-200 hover:border-white/20 hover:bg-white/[0.07]'}`}
                  >
                    <i className={`fa-solid ${option.icon}`} />
                    <span>{option.label} view</span>
                  </button>
                )
              })}
            </div>

            <div className="mt-7 flex flex-nowrap gap-3 overflow-x-auto pb-1">
              <Link href={createUrl} className="inline-flex items-center gap-2 whitespace-nowrap rounded-full border border-sky-300/25 bg-sky-300/12 px-5 py-3 text-sm font-semibold text-sky-100"><i className="fa-solid fa-plus text-xs" />Create prompt</Link>
              <Link href="/academy/prompts" className="inline-flex items-center gap-2 whitespace-nowrap rounded-full border border-white/10 bg-white/[0.04] px-5 py-3 text-sm font-semibold text-white/85"><i className="fa-solid fa-book-open text-xs" />Open public library</Link>
              <span className="inline-flex items-center gap-2 whitespace-nowrap rounded-full border border-white/10 bg-white/[0.04] px-5 py-3 text-sm font-semibold text-white/85"><i className="fa-solid fa-layer-group text-xs" />{summary.total} prompts in view</span>
            </div>

            <div className="mt-7 grid gap-3 sm:grid-cols-2 xl:grid-cols-4">
              <div className="rounded-[24px] border border-white/10 bg-black/20 px-5 py-4">
                <p className="text-[10px] font-semibold uppercase tracking-[0.18em] text-slate-500">Active</p>
                <p className="mt-2 text-2xl font-semibold tracking-[-0.04em] text-white">{summary.active}</p>
              </div>
              <div className="rounded-[24px] border border-white/10 bg-black/20 px-5 py-4">
                <p className="text-[10px] font-semibold uppercase tracking-[0.18em] text-slate-500">Featured</p>
                <p className="mt-2 text-2xl font-semibold tracking-[-0.04em] text-white">{summary.featured}</p>
              </div>
              <div className="rounded-[24px] border border-white/10 bg-black/20 px-5 py-4">
                <p className="text-[10px] font-semibold uppercase tracking-[0.18em] text-slate-500">Prompt of week</p>
                <p className="mt-2 text-2xl font-semibold tracking-[-0.04em] text-white">{summary.promptOfWeek}</p>
              </div>
              <div className="rounded-[24px] border border-white/10 bg-black/20 px-5 py-4">
                <p className="text-[10px] font-semibold uppercase tracking-[0.18em] text-slate-500">Comparisons</p>
                <p className="mt-2 text-2xl font-semibold tracking-[-0.04em] text-white">{summary.comparisons}</p>
              </div>
            </div>
          </div>

          <div className="xl:pt-2">
            <PromptHeroCollage items={promptItems} />
          </div>
        </div>
      </section>

      <div className="flex flex-wrap items-center justify-between gap-4">
        <p className="text-sm text-slate-400">Manage Academy content below. Changes clear Academy cache automatically.</p>
        <div className="flex flex-wrap gap-3">
          <Link href="/academy/prompts" className="inline-flex items-center gap-2 rounded-full border border-white/10 bg-white/[0.04] px-5 py-3 text-sm font-semibold text-white/85"><i className="fa-solid fa-book-open text-xs" />View public library</Link>
          <Link href={createUrl} className="inline-flex items-center gap-2 rounded-full border border-sky-300/25 bg-sky-300/12 px-5 py-3 text-sm font-semibold text-sky-100"><i className="fa-solid fa-plus text-xs" />Create prompt</Link>
        </div>
      </div>

      {promptItems.length === 0 ? (
        <div className="rounded-[28px] border border-white/[0.08] bg-white/[0.03] px-6 py-12 text-center text-slate-400">No prompt templates exist yet.</div>
      ) : viewMode === 'table' ? (
        <PromptTable items={promptItems} />
      ) : viewMode === 'grid' ? (
        <div className="grid gap-5 md:grid-cols-2 2xl:grid-cols-3">
          {promptItems.map((item) => <PromptGridCard key={item.id} item={item} />)}
        </div>
      ) : (
        <div className="space-y-5">
          {promptItems.map((item) => <PromptGalleryCard key={item.id} item={item} />)}
        </div>
      )}

      <PaginationLinks links={items?.links} />
    </div>
  )
}

export default function AcademyCrudIndex({ title, subtitle, items, columns, createUrl }) {
  const flash = usePage().props.flash || {}
  const resource = usePage().props.resource
  const filters = usePage().props.filters || {}
  const summary = usePage().props.summary || {}

  return (
    <AdminLayout title={title} subtitle={subtitle}>
      <Head title={`Admin · ${title}`} />

      {flash.success ? <div className="mb-6 rounded-2xl border border-emerald-300/20 bg-emerald-300/10 px-4 py-3 text-sm text-emerald-100">{flash.success}</div> : null}

      {resource === 'courses' ? (
        <CourseIndexContent title={title} subtitle={subtitle} items={items} createUrl={createUrl} filters={filters} summary={summary} />
      ) : resource === 'prompts' ? (
        <PromptIndexContent title={title} subtitle={subtitle} items={items} createUrl={createUrl} />
      ) : (
        <>
          <div className="mb-6 flex items-center justify-between gap-4">
            <p className="text-sm text-slate-400">Manage Academy content below. Changes clear Academy cache automatically.</p>
            <Link href={createUrl} className="rounded-full border border-sky-300/25 bg-sky-300/12 px-5 py-3 text-sm font-semibold text-sky-100">Create record</Link>
          </div>

          {(items?.data || []).length === 0 ? (
            <div className="rounded-[28px] border border-white/[0.08] bg-white/[0.03] px-6 py-12 text-center text-slate-400">No records exist yet.</div>
          ) : (
            <div className="space-y-4">
              {items.data.map((item) => (
                <div key={item.id} className="rounded-[28px] border border-white/[0.08] bg-white/[0.03] p-5">
                  <div className="grid gap-4 lg:grid-cols-[minmax(0,1fr)_auto] lg:items-center">
                    <div className="grid gap-2 sm:grid-cols-2 xl:grid-cols-3 2xl:grid-cols-6">
                      {columns.map((column) => (
                        <div key={column}>
                          <p className="text-[11px] font-semibold uppercase tracking-[0.2em] text-slate-500">{column.replaceAll('_', ' ')}</p>
                          <div className="mt-1">{renderCrudCell(column, item)}</div>
                        </div>
                      ))}
                    </div>

                    <div className="flex flex-wrap gap-3 lg:justify-end">
                      {item.builder_url ? <Link href={item.builder_url} className="rounded-full border border-amber-300/20 bg-amber-300/10 px-4 py-2 text-sm font-semibold text-amber-100">Builder</Link> : null}
                      <Link href={item.edit_url} className="rounded-full border border-white/10 bg-white/[0.04] px-4 py-2 text-sm font-semibold text-white">Edit</Link>
                      <button type="button" onClick={() => { if (!window.confirm('Delete this record?')) return; router.delete(item.destroy_url, { preserveScroll: true }) }} className="rounded-full border border-rose-300/20 bg-rose-300/10 px-4 py-2 text-sm font-semibold text-rose-100">Delete</button>
                    </div>
                  </div>
                </div>
              ))}
            </div>
          )}
        </>
      )}
    </AdminLayout>
  )
}