import { useForm, useFieldArray } from 'react-hook-form'
import { z } from 'zod'
import { zodResolver } from '@hookform/resolvers/zod'
import { AlertTriangle } from 'lucide-react'
import { toast } from 'sonner'

import {
  Dialog,
  DialogContent,
  DialogHeader,
  DialogTitle,
} from '@/components/ui/dialog'
import {
  Form,
  FormControl,
  FormField,
  FormItem,
  FormLabel,
  FormMessage,
} from '@/components/ui/form'
import { Table, TableBody, TableCell, TableRow } from '@/components/ui/table'
import { Input } from '@/components/ui/input'
import { Textarea } from '@/components/ui/textarea'
import { Button } from '@/components/ui/button'
import VideoPlayer from '@/components/video-player'

import { useEvaluations } from './evaluations-provider'
import { useEvaluation } from '@/hooks/evaluations/useEvaluation'
import { useUpdateEvaluationDetails } from '@/hooks/evaluations/useUpdateEvaluationDetails'
import { type Evaluation } from '@/types/evaluations.types'

const schema = z.object({
  pros_comment: z.string(),
  cons_comment: z.string(),
  suggestion: z.string(),
  summary: z.string(),
  score: z.number({ error: 'نمره ارزیابی الزامی است' }),
  items: z.array(
    z.object({
      item_id: z.number(),
      name: z.string(),
      score: z.number({ error: 'نمره آیتم الزامی است' }),
    })
  ),
})

type FormValues = z.infer<typeof schema>

function getDefaultValues(evaluation: Evaluation): FormValues {
  return {
    pros_comment: evaluation.pros_comment ?? '',
    cons_comment: evaluation.cons_comment ?? '',
    suggestion: evaluation.suggestion ?? '',
    summary: evaluation.summary ?? '',
    score: evaluation.score ? Number(evaluation.score) : 0,
    items: evaluation.items.map((item) => ({
      item_id: item.item.id,
      name: item.item.name,
      score: item.score,
    })),
  }
}

export function EvaluationsEditDialog() {
  const { open, setOpen, currentRow } = useEvaluations()
  const opened = open === 'edit'

  const { data: evaluation, isLoading } = useEvaluation(
    opened ? (currentRow?.id as number) : ''
  )
  const mediaSrc = evaluation?.media?.[0]?.url

  const handleClose = () => setOpen(null)

  return (
    <Dialog open={opened} modal onOpenChange={handleClose}>
      <DialogContent className='max-h-[90vh] max-w-5xl overflow-y-auto'>
        <DialogHeader>
          <DialogTitle>ویرایش ارزیابی</DialogTitle>
        </DialogHeader>

        {isLoading || !evaluation ? (
          <div className='py-10 text-center'>در حال دریافت اطلاعات...</div>
        ) : (
          <div className='flex flex-col gap-4'>
            {mediaSrc && <VideoPlayer src={mediaSrc} />}

            {evaluation.items.length === 0 ? (
              <div className='flex items-center justify-center gap-3 rounded-xl border bg-muted px-2 py-4 text-center text-sm font-bold text-primary'>
                <AlertTriangle />
                <span>ارزیابی برای این کاربر یافت نشد.</span>
              </div>
            ) : (
              <EvaluationEditForm
                key={evaluation.id}
                evaluation={evaluation}
                onClose={handleClose}
              />
            )}
          </div>
        )}
      </DialogContent>
    </Dialog>
  )
}

type EvaluationEditFormProps = {
  evaluation: Evaluation
  onClose: () => void
}

function EvaluationEditForm({ evaluation, onClose }: EvaluationEditFormProps) {
  const { mutate, isPending } = useUpdateEvaluationDetails()

  const form = useForm<FormValues>({
    resolver: zodResolver(schema),
    defaultValues: getDefaultValues(evaluation),
  })

  const { fields } = useFieldArray({
    control: form.control,
    name: 'items',
  })

  const onSubmit = (values: FormValues) => {
    mutate(
      {
        id: evaluation.id,
        payload: {
          pros_comment: values.pros_comment,
          cons_comment: values.cons_comment,
          suggestion: values.suggestion,
          summary: values.summary,
          score: values.score,
          items: values.items.map((item) => ({
            item_id: item.item_id,
            score: item.score,
          })),
        },
      },
      {
        onSuccess: () => {
          toast.success('ویرایش ارزیابی با موفقیت انجام شد.')
          onClose()
        },
        onError: () => {
          toast.error('خطا در ویرایش ارزیابی!')
        },
      }
    )
  }

  return (
    <Form {...form}>
      <form
        onSubmit={form.handleSubmit(onSubmit)}
        className='flex flex-col gap-4'
      >
        <h2>نتیجه ارزیابی</h2>
        <div className='overflow-hidden rounded-2xl border border-slate-200'>
          <Table>
            <TableBody>
              {fields.map((fieldItem, index) => (
                <TableRow
                  key={fieldItem.id}
                  className='border-b border-slate-100 last:border-0 hover:bg-transparent'
                >
                  <TableCell className='p-3 text-right text-sm leading-5'>
                    {fieldItem.name}
                  </TableCell>
                  <TableCell className='p-3'>
                    <FormField
                      control={form.control}
                      name={`items.${index}.score`}
                      render={({ field }) => (
                        <FormItem>
                          <div className='flex items-center justify-end gap-1'>
                            <span className='text-foreground'>100 /</span>
                            <FormControl>
                              <Input
                                type='number'
                                className='h-8 w-20 text-center text-base'
                                value={field.value ?? ''}
                                onChange={(e) => {
                                  const value = e.target.value
                                  field.onChange(
                                    value === '' ? 0 : Number(value)
                                  )
                                }}
                              />
                            </FormControl>
                          </div>
                          <FormMessage />
                        </FormItem>
                      )}
                    />
                  </TableCell>
                </TableRow>
              ))}
              <TableRow className='border-b border-slate-100 last:border-0 hover:bg-transparent'>
                <TableCell className='p-3 text-right text-sm leading-5 font-semibold'>
                  مجموع عملکرد
                </TableCell>
                <TableCell className='p-3'>
                  <FormField
                    control={form.control}
                    name='score'
                    render={({ field }) => (
                      <FormItem>
                        <div className='flex items-center justify-end gap-1'>
                          <span className='text-base font-semibold'>100 /</span>
                          <FormControl>
                            <Input
                              type='number'
                              className='h-8 w-20 text-center text-base font-semibold'
                              value={field.value ?? ''}
                              onChange={(e) => {
                                const value = e.target.value
                                field.onChange(
                                  value === '' ? 0 : Number(value)
                                )
                              }}
                            />
                          </FormControl>
                        </div>
                        <FormMessage />
                      </FormItem>
                    )}
                  />
                </TableCell>
              </TableRow>
            </TableBody>
          </Table>
        </div>

        <FormField
          control={form.control}
          name='pros_comment'
          render={({ field }) => (
            <FormItem className='flex flex-col gap-2'>
              <FormLabel className='leading-6'>نقاط قوت:</FormLabel>
              <FormControl>
                <Textarea {...field} rows={4} />
              </FormControl>
              <FormMessage />
            </FormItem>
          )}
        />

        <FormField
          control={form.control}
          name='cons_comment'
          render={({ field }) => (
            <FormItem className='flex flex-col gap-2'>
              <FormLabel className='leading-6'>نقاط ضعف:</FormLabel>
              <FormControl>
                <Textarea {...field} rows={4} />
              </FormControl>
              <FormMessage />
            </FormItem>
          )}
        />

        <FormField
          control={form.control}
          name='suggestion'
          render={({ field }) => (
            <FormItem className='flex flex-col gap-2'>
              <FormLabel className='leading-6'>تمرین پیشنهادی:</FormLabel>
              <FormControl>
                <Textarea {...field} rows={4} />
              </FormControl>
              <FormMessage />
            </FormItem>
          )}
        />

        <FormField
          control={form.control}
          name='summary'
          render={({ field }) => (
            <FormItem className='flex flex-col gap-2'>
              <FormLabel className='leading-6'>نتیجه:</FormLabel>
              <FormControl>
                <Textarea {...field} rows={4} />
              </FormControl>
              <FormMessage />
            </FormItem>
          )}
        />

        <div className='flex justify-end gap-3'>
          <Button type='button' variant='outline' onClick={onClose}>
            انصراف
          </Button>
          <Button type='submit' disabled={isPending}>
            {isPending ? 'در حال ارسال...' : 'ذخیره تغییرات'}
          </Button>
        </div>
      </form>
    </Form>
  )
}