import { useEffect, useMemo, useState } from 'react'
import type { CertMonitoring } from '@cfdm/shared'
import type { ServiceView, SubdomainRecord } from '@/lib/schemas'
import { certMonitoringOptions } from '@/lib/cert-monitoring'
import { formatServiceGroupLabel } from '@/lib/service-utils'
import { FormFieldSimple } from '@/components/form-field'
import { LoadingButton } from '@/components/loading-button'
import { AppInput } from '@/components/app-input'
import { AppFieldDescription, AppFieldGroup } from '@/components/app-field'
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from '@cfdm/ui/components/select'
import {
  Sheet,
  SheetContent,
  SheetDescription,
  SheetFooter,
  SheetHeader,
  SheetTitle,
} from '@cfdm/ui/components/sheet'

export interface SubdomainEditValues {
  name: string
  serviceId: string
  certMonitoring: CertMonitoring
}

interface SubdomainEditSheetProps {
  mode: 'create' | 'edit'
  subdomain: SubdomainRecord | null
  zoneName: string
  services: ServiceView[]
  serviceGroupById: Map<number, string | null>
  currentServiceId: string
  open: boolean
  isSaving: boolean
  onOpenChange: (open: boolean) => void
  onSubmit: (values: SubdomainEditValues) => void
}

export function SubdomainEditSheet({
  mode,
  subdomain,
  zoneName,
  services,
  serviceGroupById,
  currentServiceId,
  open,
  isSaving,
  onOpenChange,
  onSubmit,
}: SubdomainEditSheetProps) {
  const [name, setName] = useState('')
  const [serviceId, setServiceId] = useState('none')
  const [certMonitoring, setCertMonitoring] = useState<CertMonitoring>('auto')

  const serviceItems = useMemo(
    () => [
      { label: 'Без сервиса', value: 'none' },
      ...services.map((service) => ({
        label: formatServiceGroupLabel(
          serviceGroupById.get(service.id),
          service.name,
        ),
        value: String(service.id),
      })),
    ],
    [services, serviceGroupById],
  )

  const certMonitoringItems = useMemo(
    () =>
      certMonitoringOptions.map((option) => ({
        label: option.label,
        value: option.value,
      })),
    [],
  )

  useEffect(() => {
    if (!open) return
    if (mode === 'edit' && subdomain) {
      setName(subdomain.name)
      setServiceId(currentServiceId || 'none')
      setCertMonitoring(subdomain.cert_monitoring)
      return
    }
    setName('')
    setServiceId('none')
    setCertMonitoring('auto')
  }, [open, mode, subdomain, currentServiceId])

  function handleSubmit(event: React.FormEvent) {
    event.preventDefault()
    const trimmed = name.trim()
    if (!trimmed) return
    onSubmit({ name: trimmed, serviceId, certMonitoring })
  }

  return (
    <Sheet open={open} onOpenChange={onOpenChange}>
      <SheetContent>
        <SheetHeader>
          <SheetTitle>
            {mode === 'create' ? 'Создать поддомен' : 'Редактировать поддомен'}
          </SheetTitle>
          <SheetDescription>
            {mode === 'create'
              ? `Имя записи в зоне ${zoneName} (например, www или api)`
              : `Изменение поддомена в зоне ${zoneName}`}
          </SheetDescription>
        </SheetHeader>
        <form onSubmit={handleSubmit} className="flex flex-col gap-4 px-4">
          <AppFieldGroup>
            <FormFieldSimple label="Имя" htmlFor="subdomain_name">
              <AppInput
                id="subdomain_name"
                placeholder="www"
                value={name}
                onChange={(event) => setName(event.target.value)}
                className="font-mono"
                aria-invalid={!name.trim() && name.length > 0}
              />
            </FormFieldSimple>
            {mode === 'edit' && (
              <>
                <FormFieldSimple label="Сервис" htmlFor="subdomain_service">
                  <Select
                    items={serviceItems}
                    value={serviceId}
                    onValueChange={(value) => setServiceId(value ?? 'none')}
                  >
                    <SelectTrigger id="subdomain_service" className="w-full">
                      <SelectValue placeholder="Без сервиса" />
                    </SelectTrigger>
                    <SelectContent>
                      {serviceItems.map((item) => (
                        <SelectItem key={item.value} value={item.value}>
                          {item.label}
                        </SelectItem>
                      ))}
                    </SelectContent>
                  </Select>
                </FormFieldSimple>
                <FormFieldSimple
                  label="Мониторинг SSL"
                  htmlFor="subdomain_cert_monitoring"
                >
                  <Select
                    items={certMonitoringItems}
                    value={certMonitoring}
                    onValueChange={(value) =>
                      setCertMonitoring((value ?? 'auto') as CertMonitoring)
                    }
                  >
                    <SelectTrigger id="subdomain_cert_monitoring" className="w-full">
                      <SelectValue />
                    </SelectTrigger>
                    <SelectContent>
                      {certMonitoringOptions.map((option) => (
                        <SelectItem key={option.value} value={option.value}>
                          {option.label}
                        </SelectItem>
                      ))}
                    </SelectContent>
                  </Select>
                  <AppFieldDescription>
                    {
                      certMonitoringOptions.find((o) => o.value === certMonitoring)
                        ?.description
                    }
                  </AppFieldDescription>
                </FormFieldSimple>
              </>
            )}
          </AppFieldGroup>
          <SheetFooter>
            <LoadingButton
              type="submit"
              className="w-full"
              disabled={!name.trim()}
              isLoading={isSaving}
              loadingLabel="Сохранение…"
            >
              {mode === 'create' ? 'Создать' : 'Сохранить'}
            </LoadingButton>
          </SheetFooter>
        </form>
      </SheetContent>
    </Sheet>
  )
}