import { useState } from 'react'
import { createFileRoute, useNavigate } from '@tanstack/react-router'
import { useQuery } from '@tanstack/react-query'
import { lessonPlanListOptions } from '@/api/lessons'
import { usePagination } from '@/hooks/use-pagination'
import { DataTable, type Column } from '@/components/shared/data-table'
import { Button } from '@/components/ui/button'
import { Badge } from '@/components/ui/badge'
import { Input } from '@/components/ui/input'
import { Search } from 'lucide-react'
import type { LessonPlan } from '@/types/lesson'

export const Route = createFileRoute('/_authenticated/lessons/plans/')({
  validateSearch: (search: Record<string, unknown>) => ({
    page: Number(search.page) || 1,
    limit: Number(search.limit) || 25,
    q: (search.q as string) || undefined,
    sort: (search.sort as string) || undefined,
    order: (search.order as 'asc' | 'desc') || 'desc',
  }),
  component: LessonPlansPage,
})

const columns: Column<LessonPlan>[] = [
  { key: 'title', header: 'Title', sortable: true, render: (p) => <span className="font-medium">{p.title}</span> },
  {
    key: 'progress', header: 'Progress', sortable: true,
    render: (p) => (
      <div className="flex items-center gap-2">
        <div className="w-24 bg-muted rounded-full h-2">
          <div className="bg-primary h-2 rounded-full" style={{ width: `${p.progress}%` }} />
        </div>
        <span className="text-xs text-muted-foreground">{Math.round(p.progress)}%</span>
      </div>
    ),
  },
  {
    key: 'is_active', header: 'Status',
    render: (p) => <Badge variant={p.isActive ? 'default' : 'secondary'}>{p.isActive ? 'Active' : 'Inactive'}</Badge>,
  },
  {
    key: 'created_at', header: 'Created', sortable: true,
    render: (p) => <>{new Date(p.createdAt).toLocaleDateString()}</>,
  },
]

function LessonPlansPage() {
  const navigate = useNavigate()
  const { params, setPage, setSearch, setSort } = usePagination()
  const [searchInput, setSearchInput] = useState(params.q ?? '')

  const { data, isLoading } = useQuery(lessonPlanListOptions(params))

  function handleSearchSubmit(e: React.FormEvent) {
    e.preventDefault()
    setSearch(searchInput)
  }

  return (
    <div className="space-y-6">
      <h1 className="text-2xl font-bold">Lesson Plans</h1>

      <form onSubmit={handleSearchSubmit} className="flex gap-2 max-w-sm">
        <div className="relative flex-1">
          <Search className="absolute left-3 top-1/2 -translate-y-1/2 h-4 w-4 text-muted-foreground" />
          <Input
            placeholder="Search lesson plans..."
            value={searchInput}
            onChange={(e) => setSearchInput(e.target.value)}
            className="pl-9"
          />
        </div>
        <Button type="submit" variant="secondary">Search</Button>
      </form>

      <DataTable
        columns={columns}
        data={data?.data ?? []}
        loading={isLoading}
        page={params.page}
        totalPages={data?.pagination.totalPages ?? 1}
        total={data?.pagination.total ?? 0}
        sort={params.sort}
        order={params.order}
        onPageChange={setPage}
        onSort={setSort}
        onRowClick={(p) => navigate({ to: '/lessons/plans/$planId', params: { planId: p.id }, search: { page: 1, limit: 25, q: undefined, sort: undefined, order: 'asc' as const } })}
      />
    </div>
  )
}