import { PermissionAction } from '@supabase/shared-types/out/constants'
import { useFlag, useParams } from 'common'
import { Search } from 'lucide-react'
import { parseAsString, useQueryState } from 'nuqs'
import { useEffect, useMemo, useState } from 'react'
import { toast } from 'sonner'
import { Badge, Card, Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from 'ui'
import { Input } from 'ui-patterns/DataInputs/Input'
import { ConfirmationModal } from 'ui-patterns/Dialogs/ConfirmationModal'
import { GenericSkeletonLoader } from 'ui-patterns/ShimmeringLoader'

import { AddNewSecretForm } from './AddNewSecretForm'
import { DefaultEdgeFunctionSecrets } from './DefaultEdgeFunctionSecrets'
import {
  getVisibleDefaultEdgeFunctionSecrets,
  isInternalEdgeFunctionSecret,
} from './DefaultEdgeFunctionSecrets.utils'
import EdgeFunctionSecret from './EdgeFunctionSecret'
import { EditSecretSheet } from './EditSecretSheet'
import { AlertError } from '@/components/ui/AlertError'
import { DocsButton } from '@/components/ui/DocsButton'
import { NoPermission } from '@/components/ui/NoPermission'
import { useSecretsDeleteMutation } from '@/data/secrets/secrets-delete-mutation'
import { useSecretsQuery } from '@/data/secrets/secrets-query'
import { useAsyncCheckPermissions } from '@/hooks/misc/useCheckPermissions'
import { DOCS_URL } from '@/lib/constants'

export const EdgeFunctionSecrets = () => {
  const { ref: projectRef } = useParams()
  const workersEnabled = useFlag('workers')
  const [searchString, setSearchString] = useState('')

  const { can: canReadSecrets, isLoading: isLoadingSecretsPermissions } = useAsyncCheckPermissions(
    PermissionAction.FUNCTIONS_SECRET_READ,
    '*'
  )
  const { can: canUpdateSecrets } = useAsyncCheckPermissions(PermissionAction.SECRETS_WRITE, '*')

  const {
    data = [],
    error,
    isPending: isLoading,
    isSuccess,
    isError,
  } = useSecretsQuery({ projectRef: projectRef }, { enabled: canReadSecrets })

  const customSecrets = useMemo(
    () => data.filter((secret) => !isInternalEdgeFunctionSecret(secret.name)),
    [data]
  )

  const visibleDefaultSecrets = useMemo(
    () => getVisibleDefaultEdgeFunctionSecrets(new Set(data.map((secret) => secret.name))),
    [data]
  )

  const [selectedIdToEdit, setSelectedIdToEdit] = useQueryState(
    'edit',
    parseAsString.withOptions({ history: 'push', clearOnDefault: true })
  )
  const selectedSecretToEdit = useMemo(
    () => customSecrets.find((secret) => secret.name === selectedIdToEdit),
    [customSecrets, selectedIdToEdit]
  )

  const [selectedIdToDelete, setSelectedIdToDelete] = useQueryState(
    'delete',
    parseAsString.withOptions({ history: 'push', clearOnDefault: true })
  )
  const selectedSecretToDelete = useMemo(
    () => customSecrets.find((secret) => secret.name === selectedIdToDelete),
    [customSecrets, selectedIdToDelete]
  )

  const {
    mutate: deleteSecret,
    isPending: isDeleting,
    isSuccess: isSuccessDelete,
  } = useSecretsDeleteMutation({
    onSuccess: (_, variables) => {
      toast.success(`Successfully deleted secret “${variables.secrets[0]}”`)
      setSelectedIdToDelete(null)
    },
  })

  const filteredCustomSecrets = useMemo(() => {
    if (searchString.length === 0) return customSecrets
    const search = searchString.toLowerCase()
    return customSecrets.filter((secret) => secret.name.toLowerCase().includes(search))
  }, [customSecrets, searchString])

  const headers = [
    <TableHead key="secret-name">Name</TableHead>,
    <TableHead key="secret-value" className="flex items-center gap-x-2">
      Digest <Badge variant="default">SHA256</Badge>
    </TableHead>,
    <TableHead key="secret-updated-at">Updated</TableHead>,
    <TableHead key="actions" />,
  ]

  const showLoadingState = isLoadingSecretsPermissions || (canReadSecrets && isLoading)

  useEffect(() => {
    if (!!selectedIdToEdit && isSuccess && !selectedSecretToEdit) {
      toast(`Secret ${selectedIdToEdit} cannot be found`)
      setSelectedIdToEdit(null)
    }
  }, [isSuccess, selectedIdToEdit, selectedSecretToEdit, setSelectedIdToEdit])

  useEffect(() => {
    if (!!selectedIdToDelete && isSuccess && !selectedSecretToDelete && !isSuccessDelete) {
      toast(`Secret ${selectedIdToDelete} cannot be found`)
      setSelectedIdToDelete(null)
    }
  }, [
    isSuccess,
    isSuccessDelete,
    selectedIdToDelete,
    selectedSecretToDelete,
    setSelectedIdToDelete,
  ])

  return (
    <>
      {showLoadingState ? (
        <GenericSkeletonLoader />
      ) : !canReadSecrets ? (
        <NoPermission resourceText="view this project's edge function secrets" />
      ) : (
        <>
          {isError && <AlertError error={error} subject="Failed to retrieve project secrets" />}

          {isSuccess && (
            <div className="space-y-10">
              {canUpdateSecrets ? (
                <AddNewSecretForm />
              ) : (
                <NoPermission resourceText="manage this project's edge function secrets" />
              )}

              <section className="space-y-4">
                <div className="flex flex-col md:flex-row md:items-center justify-between gap-2">
                  <div className="space-y-1">
                    <h3 className="text-foreground text-base">Custom secrets</h3>
                    <p className="text-sm text-foreground-light">
                      Secrets you have defined for this project
                    </p>
                  </div>
                  <Input
                    size="small"
                    className="w-full md:w-80"
                    placeholder="Search for a secret"
                    value={searchString}
                    onChange={(e) => setSearchString(e.target.value)}
                    icon={<Search />}
                  />
                </div>

                <Card>
                  <Table>
                    <TableHeader>
                      <TableRow>{headers}</TableRow>
                    </TableHeader>
                    <TableBody>
                      {filteredCustomSecrets.length > 0 ? (
                        filteredCustomSecrets.map((secret) => (
                          <EdgeFunctionSecret
                            key={secret.name}
                            secret={secret}
                            onSelectEdit={() => setSelectedIdToEdit(secret.name)}
                            onSelectDelete={() => setSelectedIdToDelete(secret.name)}
                          />
                        ))
                      ) : customSecrets.length === 0 ? (
                        <TableRow className="[&>td]:hover:bg-inherit">
                          <TableCell colSpan={headers.length}>
                            <p className="text-sm text-foreground">No custom secrets created</p>
                            <p className="text-sm text-foreground-lighter">
                              This project has no custom secrets yet.
                            </p>
                          </TableCell>
                        </TableRow>
                      ) : (
                        <TableRow className="[&>td]:hover:bg-inherit">
                          <TableCell colSpan={headers.length}>
                            <p className="text-sm text-foreground">No results found</p>
                            <p className="text-sm text-foreground-light">
                              Your search for "{searchString}" did not return any results
                            </p>
                          </TableCell>
                        </TableRow>
                      )}
                    </TableBody>
                  </Table>
                </Card>
              </section>

              <section className="space-y-4">
                <div className="flex flex-col md:flex-row md:items-center justify-between gap-2">
                  <div className="space-y-1">
                    <h3 className="text-foreground text-base">Default secrets</h3>
                    <p className="text-sm text-foreground-light">
                      Reserved secrets available in every project
                    </p>
                  </div>
                  <DocsButton href={`${DOCS_URL}/guides/functions/secrets#default-secrets`} />
                </div>
                <DefaultEdgeFunctionSecrets secrets={visibleDefaultSecrets} />
              </section>
            </div>
          )}
        </>
      )}

      <EditSecretSheet
        secret={selectedSecretToEdit}
        visible={!!selectedSecretToEdit}
        onClose={() => setSelectedIdToEdit(null)}
      />

      <ConfirmationModal
        variant="destructive"
        loading={isDeleting}
        visible={!!selectedSecretToDelete}
        confirmLabel="Delete secret"
        confirmLabelLoading="Deleting secret"
        title={`Delete secret “${selectedSecretToDelete?.name}”`}
        onCancel={() => setSelectedIdToDelete(null)}
        onConfirm={() => {
          if (selectedSecretToDelete) {
            deleteSecret({ projectRef, secrets: [selectedSecretToDelete.name] })
          }
        }}
      >
        {workersEnabled ? (
          <p className="text-sm">
            Ensure none of your <span className="font-medium">edge functions</span> or{' '}
            <span className="font-medium">workers</span> are actively using this secret before
            deleting it. This action cannot be undone.
          </p>
        ) : (
          <p className="text-sm">
            Ensure none of your edge functions are actively using this secret before deleting it.
            This action cannot be undone.
          </p>
        )}
      </ConfirmationModal>
    </>
  )
}