import { useState } from 'react'
import {
  Card,
  Stack,
  TextInput,
  Textarea,
  Select,
  Group,
  Button,
  Switch,
  NumberInput,
  Collapse,
  Title,
} from '@pikku/mantine/core'
import { useDisclosure } from '@mantine/hooks'
import { notifications } from '@mantine/notifications'
import { m } from '@/i18n/messages'
import { useQueryClient } from '@tanstack/react-query'
import { Plus } from 'lucide-react'
import { usePikkuMutation } from '@perauset/functions-sdk/pikku/api.gen'

type Category =
  | 'housekeeping'
  | 'kitchen'
  | 'maintenance'
  | 'operations'
  | 'retreat'
  | 'transport'

const CATEGORIES: { value: Category; label: string }[] = [
  { value: 'housekeeping', label: 'Housekeeping' },
  { value: 'kitchen', label: 'Kitchen' },
  { value: 'maintenance', label: 'Maintenance' },
  { value: 'operations', label: 'Operations' },
  { value: 'retreat', label: 'Retreat' },
  { value: 'transport', label: 'Transport' },
]

export function CreateTemplateForm() {
  const queryClient = useQueryClient()
  const [opened, { toggle }] = useDisclosure(false)
  const [title, setTitle] = useState('')
  const [description, setDescription] = useState('')
  const [category, setCategory] = useState<Category | null>(null)
  const [isClaimable, setIsClaimable] = useState(false)
  const [defaultLocation, setDefaultLocation] = useState('')
  const [estimatedMinutes, setEstimatedMinutes] = useState<number | string>('')
  const [recurrenceCron, setRecurrenceCron] = useState('')

  const resetForm = () => {
    setTitle('')
    setDescription('')
    setCategory(null)
    setIsClaimable(false)
    setDefaultLocation('')
    setEstimatedMinutes('')
    setRecurrenceCron('')
  }

  const mutation = usePikkuMutation('createTaskTemplate', {
    onSuccess: () => {
      notifications.show({
        title: m.templates_created(),
        message: `"${title}" template has been created.`,
        color: 'teal',
      })
      resetForm()
      toggle()
      queryClient.invalidateQueries({
        predicate: (q) =>
          typeof q.queryKey[0] === 'string' &&
          (q.queryKey[0] as string).toLowerCase().includes('template'),
      })
    },
    onError: (err: Error) => {
      notifications.show({
        title: m.common_error(),
        message: err.message ?? 'Something went wrong',
        color: 'red',
      })
    },
  })

  const handleSubmit = (e: React.FormEvent) => {
    e.preventDefault()

    if (!title.trim() || !category) {
      notifications.show({
        title: m.common_validation(),
        message: m.templates_title_category_required(),
        color: 'orange',
      })
      return
    }

    const body = {
      title: title.trim(),
      category,
      ...(description.trim() ? { description: description.trim() } : {}),
      ...(isClaimable ? { isClaimable: true } : {}),
      ...(defaultLocation.trim() ? { defaultLocation: defaultLocation.trim() } : {}),
      ...(typeof estimatedMinutes === 'number' && estimatedMinutes > 0
        ? { estimatedMinutes }
        : {}),
      ...(recurrenceCron.trim() ? { recurrenceCron: recurrenceCron.trim() } : {}),
    }

    mutation.mutate(body)
  }

  return (
    <>
      <Button variant="light" leftSection={<Plus size={16} />} onClick={toggle}>
        {opened ? m.templates_hide_form() : m.templates_create()}
      </Button>

      <Collapse expanded={opened}>
        <Card
          padding="lg"
          radius="md"
          style={{
            backgroundColor: '#ffffff',
            boxShadow:
              '0 2px 12px rgba(61, 43, 31, 0.08), 0 1px 4px rgba(61, 43, 31, 0.04)',
            maxWidth: 640,
          }}
        >
          <Title
            order={4}
            mb="md"
            style={{ fontFamily: '"Cormorant", serif', color: '#3D2B1F' }}
          >
            {m.templates_new()}
          </Title>
          <form onSubmit={handleSubmit}>
            <Stack gap="md">
              <TextInput
                label={m.templates_field_title()}
                placeholder={m.templates_field_title_placeholder()}
                value={title}
                onChange={(e) => setTitle(e.currentTarget.value)}
                required
              />

              <Textarea
                label={m.templates_field_description()}
                placeholder={m.templates_field_description_placeholder()}
                value={description}
                onChange={(e) => setDescription(e.currentTarget.value)}
                minRows={2}
              />

              <Select
                label={m.templates_field_category()}
                placeholder={m.templates_field_category_placeholder()}
                data={CATEGORIES}
                value={category}
                onChange={(v) => setCategory(v as Category | null)}
                required
              />

              <Switch
                label={m.templates_field_claimable()}
                checked={isClaimable}
                onChange={(e) => setIsClaimable(e.currentTarget.checked)}
              />

              <TextInput
                label={m.templates_field_default_location()}
                placeholder={m.templates_field_default_location_placeholder()}
                value={defaultLocation}
                onChange={(e) => setDefaultLocation(e.currentTarget.value)}
              />

              <NumberInput
                label={m.templates_field_estimated_minutes()}
                placeholder={m.templates_field_estimated_minutes_placeholder()}
                min={1}
                value={estimatedMinutes}
                onChange={setEstimatedMinutes}
              />

              <TextInput
                label={m.templates_field_recurrence()}
                placeholder={m.templates_field_recurrence_placeholder()}
                description={m.templates_recurrence_hint()}
                value={recurrenceCron}
                onChange={(e) => setRecurrenceCron(e.currentTarget.value)}
              />

              <Group justify="flex-end" mt="sm">
                <Button variant="default" onClick={toggle}>
                  {m.common_cancel()}
                </Button>
                <Button type="submit" loading={mutation.isPending}>
                  {m.templates_create()}
                </Button>
              </Group>
            </Stack>
          </form>
        </Card>
      </Collapse>
    </>
  )
}