import { PermissionAction } from '@supabase/shared-types/out/constants'
import { Check, Plus } from 'lucide-react'
import { ComponentPropsWithoutRef, forwardRef, useMemo, useState } from 'react'
import {
  Alert,
  AlertDescription,
  AlertTitle,
  Button,
  ComboboxTrigger,
  Command,
  CommandEmpty,
  CommandGroup,
  CommandInput,
  CommandItem,
  CommandList,
  CommandSeparator,
  Popover,
  PopoverContent,
  PopoverTrigger,
  ScrollArea,
  Skeleton,
} from 'ui'

import { RestartProjectDialog } from '@/components/interfaces/ErrorHandling/RestartProjectDialog'
import { useSchemasQuery } from '@/data/database/schemas-query'
import { useAsyncCheckPermissions } from '@/hooks/misc/useCheckPermissions'
import { useSchemasFilteredForHighAvailability } from '@/hooks/misc/useHighAvailability'
import { useSelectedProjectQuery } from '@/hooks/misc/useSelectedProject'

type SchemaSelectorProps = Omit<ComponentPropsWithoutRef<'div'>, 'onSelect'> & {
  disabled?: boolean
  size?: 'tiny' | 'small'
  showError?: boolean
  selectedSchemaName?: string
  placeholderLabel?: string
  supportSelectAll?: boolean
  excludedSchemas?: string[]
  onSelectSchema: (name: string) => void
  onSelectCreateSchema?: () => void
  align?: 'start' | 'end'
  open?: boolean
  onOpenChange?: (open: boolean) => void
}

const DEFAULT_EXCLUDED_SCHEMAS: string[] = []

export const SchemaSelector = forwardRef<HTMLDivElement, SchemaSelectorProps>(
  (
    {
      className,
      disabled = false,
      size = 'tiny',
      showError = true,
      selectedSchemaName,
      placeholderLabel = 'Choose a schema...',
      supportSelectAll = false,
      excludedSchemas = DEFAULT_EXCLUDED_SCHEMAS,
      onSelectSchema,
      onSelectCreateSchema,
      align = 'start',
      open: openProp,
      onOpenChange,
      ...rest
    },
    ref
  ) => {
    const [internalOpen, setInternalOpen] = useState(false)
    const [isRestartDialogVisible, setIsRestartDialogVisible] = useState(false)
    const isControlled = openProp !== undefined
    const open = isControlled ? openProp : internalOpen
    const setOpen = (next: boolean) => {
      if (!isControlled) setInternalOpen(next)
      onOpenChange?.(next)
    }
    const { can: canCreateSchemas } = useAsyncCheckPermissions(
      PermissionAction.TENANT_SQL_ADMIN_WRITE,
      'schemas'
    )

    const { data: project } = useSelectedProjectQuery()
    const {
      data,
      isPending: isSchemasLoading,
      isSuccess: isSchemasSuccess,
      isError: isSchemasError,
      error: schemasError,
      refetch: refetchSchemas,
    } = useSchemasQuery({
      projectRef: project?.ref,
      connectionString: project?.connectionString,
    })

    const visibleSchemas = useSchemasFilteredForHighAvailability(data)

    const schemas = useMemo(
      () =>
        visibleSchemas
          .filter((schema) => !excludedSchemas.includes(schema.name))
          .sort((a, b) => a.name.localeCompare(b.name)),
      [visibleSchemas, excludedSchemas]
    )

    return (
      <div ref={ref} className={className} {...rest}>
        {isSchemasLoading && (
          <Button
            key="schema-selector-skeleton"
            className="w-full [&>span]:w-full"
            size={size}
            disabled
          >
            <Skeleton className="w-full h-3 bg-foreground-muted" />
          </Button>
        )}

        {showError && isSchemasError && (
          <Alert variant="warning" className="px-3! py-3!">
            <AlertTitle className="text-xs text-amber-900">Failed to load schemas</AlertTitle>
            <AlertDescription className="text-xs mb-2 wrap-break-word">
              Error: {(schemasError as any)?.message}
            </AlertDescription>
            <div className="flex flex-wrap gap-2">
              <Button size="tiny" onClick={() => refetchSchemas()}>
                Reload schemas
              </Button>
              <Button size="tiny" onClick={() => setIsRestartDialogVisible(true)}>
                Restart database
              </Button>
            </div>
            <RestartProjectDialog
              visible={isRestartDialogVisible}
              onClose={() => setIsRestartDialogVisible(false)}
              restartType="database"
            />
          </Alert>
        )}

        {isSchemasSuccess && (
          <Popover open={open} onOpenChange={setOpen} modal={false}>
            <PopoverTrigger asChild>
              <ComboboxTrigger
                size={size}
                disabled={disabled}
                data-testid="schema-selector"
                aria-label={
                  selectedSchemaName
                    ? `Schema ${selectedSchemaName === '*' ? 'All schemas' : selectedSchemaName}`
                    : placeholderLabel
                }
                aria-expanded={open}
                data-state={open ? 'open' : 'closed'}
                className={size === 'tiny' ? 'w-full pr-1.5!' : 'w-full'}
              >
                {selectedSchemaName ? (
                  <span className="flex w-full gap-1">
                    <span className="text-foreground-lighter">schema</span>
                    <span className="text-foreground">
                      {selectedSchemaName === '*' ? 'All schemas' : selectedSchemaName}
                    </span>
                  </span>
                ) : (
                  <span className="flex w-full gap-1 text-foreground-lighter">
                    {placeholderLabel}
                  </span>
                )}
              </ComboboxTrigger>
            </PopoverTrigger>
            <PopoverContent
              className="p-0 min-w-[200px] pointer-events-auto"
              side="bottom"
              align={align}
              sameWidthAsTrigger
            >
              <Command>
                <CommandInput className="text-xs" placeholder="Find schema..." />
                <CommandList>
                  <CommandEmpty>No schemas found</CommandEmpty>
                  <CommandGroup>
                    <ScrollArea className={(schemas || []).length > 7 ? 'h-[210px]' : ''}>
                      {supportSelectAll && (
                        <CommandItem
                          key="select-all"
                          className="cursor-pointer flex items-center justify-between space-x-2 w-full"
                          onSelect={() => {
                            onSelectSchema('*')
                            setOpen(false)
                          }}
                          onClick={() => {
                            onSelectSchema('*')
                            setOpen(false)
                          }}
                        >
                          <span>All schemas</span>
                          {selectedSchemaName === '*' && (
                            <Check className="text-primary" strokeWidth={2} size={16} />
                          )}
                        </CommandItem>
                      )}
                      {schemas.map((schema) => (
                        <CommandItem
                          key={schema.id}
                          className="cursor-pointer flex items-center justify-between space-x-2 w-full"
                          onSelect={() => {
                            onSelectSchema(schema.name)
                            setOpen(false)
                          }}
                          onClick={() => {
                            onSelectSchema(schema.name)
                            setOpen(false)
                          }}
                        >
                          <span>{schema.name}</span>
                          {selectedSchemaName === schema.name && (
                            <Check className="text-primary" strokeWidth={2} size={16} />
                          )}
                        </CommandItem>
                      ))}
                    </ScrollArea>
                  </CommandGroup>
                  {onSelectCreateSchema !== undefined && canCreateSchemas && (
                    <>
                      <CommandSeparator />
                      <CommandGroup>
                        <CommandItem
                          className="cursor-pointer flex items-center gap-x-2 w-full"
                          onSelect={() => {
                            onSelectCreateSchema()
                            setOpen(false)
                          }}
                          onClick={() => {
                            onSelectCreateSchema()
                            setOpen(false)
                          }}
                        >
                          <Plus size={12} />
                          Create a new schema
                        </CommandItem>
                      </CommandGroup>
                    </>
                  )}
                </CommandList>
              </Command>
            </PopoverContent>
          </Popover>
        )}
      </div>
    )
  }
)

SchemaSelector.displayName = 'SchemaSelector'