documenso/packages/ui/primitives/template-flow/add-template-placeholder-recipients.tsx

'use client';

import React, { useId, useMemo, useState } from 'react';

import { zodResolver } from '@hookform/resolvers/zod';
import { motion } from 'framer-motion';
import { Plus, Trash } from 'lucide-react';
import { useSession } from 'next-auth/react';
import { useFieldArray, useForm } from 'react-hook-form';

import { ZRecipientAuthOptionsSchema } from '@documenso/lib/types/document-auth';
import { nanoid } from '@documenso/lib/universal/id';
import { type Field, type Recipient, RecipientRole } from '@documenso/prisma/client';
import { AnimateGenericFadeInOut } from '@documenso/ui/components/animate/animate-generic-fade-in-out';
import { RecipientActionAuthSelect } from '@documenso/ui/components/recipient/recipient-action-auth-select';
import { RecipientRoleSelect } from '@documenso/ui/components/recipient/recipient-role-select';
import { cn } from '@documenso/ui/lib/utils';
import { Button } from '@documenso/ui/primitives/button';
import { FormErrorMessage } from '@documenso/ui/primitives/form/form-error-message';
import { Input } from '@documenso/ui/primitives/input';

import { Checkbox } from '../checkbox';
import {
  DocumentFlowFormContainerActions,
  DocumentFlowFormContainerContent,
  DocumentFlowFormContainerFooter,
  DocumentFlowFormContainerStep,
} from '../document-flow/document-flow-root';
import { ShowFieldItem } from '../document-flow/show-field-item';
import type { DocumentFlowStep } from '../document-flow/types';
import { Form, FormControl, FormField, FormItem, FormLabel, FormMessage } from '../form/form';
import { useStep } from '../stepper';
import type { TAddTemplatePlacholderRecipientsFormSchema } from './add-template-placeholder-recipients.types';
import { ZAddTemplatePlacholderRecipientsFormSchema } from './add-template-placeholder-recipients.types';

export type AddTemplatePlaceholderRecipientsFormProps = {
  documentFlow: DocumentFlowStep;
  recipients: Recipient[];
  fields: Field[];
  isEnterprise: boolean;
  isDocumentPdfLoaded: boolean;
  onSubmit: (_data: TAddTemplatePlacholderRecipientsFormSchema) => void;
};

export const AddTemplatePlaceholderRecipientsFormPartial = ({
  documentFlow,
  isEnterprise,
  recipients,
  fields,
  isDocumentPdfLoaded,
  onSubmit,
}: AddTemplatePlaceholderRecipientsFormProps) => {
  const initialId = useId();
  const { data: session } = useSession();

  const user = session?.user;

  const [placeholderRecipientCount, setPlaceholderRecipientCount] = useState(() =>
    recipients.length > 1 ? recipients.length + 1 : 2,
  );

  const { currentStep, totalSteps, previousStep } = useStep();

  const form = useForm<TAddTemplatePlacholderRecipientsFormSchema>({
    resolver: zodResolver(ZAddTemplatePlacholderRecipientsFormSchema),
    defaultValues: {
      signers:
        recipients.length > 0
          ? recipients.map((recipient) => ({
              nativeId: recipient.id,
              formId: String(recipient.id),
              name: recipient.name,
              email: recipient.email,
              role: recipient.role,
              actionAuth:
                ZRecipientAuthOptionsSchema.parse(recipient.authOptions)?.actionAuth ?? undefined,
            }))
          : [
              {
                formId: initialId,
                name: `Recipient 1`,
                email: `recipient.1@documenso.com`,
                role: RecipientRole.SIGNER,
                actionAuth: undefined,
              },
            ],
    },
  });

  // Always show advanced settings if any recipient has auth options.
  const alwaysShowAdvancedSettings = useMemo(() => {
    const recipientHasAuthOptions = recipients.find((recipient) => {
      const recipientAuthOptions = ZRecipientAuthOptionsSchema.parse(recipient.authOptions);

      return recipientAuthOptions?.accessAuth || recipientAuthOptions?.actionAuth;
    });

    const formHasActionAuth = form.getValues('signers').find((signer) => signer.actionAuth);

    return recipientHasAuthOptions !== undefined || formHasActionAuth !== undefined;
  }, [recipients, form]);

  const [showAdvancedSettings, setShowAdvancedSettings] = useState(alwaysShowAdvancedSettings);

  const {
    formState: { errors, isSubmitting },
    control,
  } = form;

  const onFormSubmit = form.handleSubmit(onSubmit);

  const {
    append: appendSigner,
    fields: signers,
    remove: removeSigner,
  } = useFieldArray({
    control,
    name: 'signers',
  });

  const onAddPlaceholderSelfRecipient = () => {
    appendSigner({
      formId: nanoid(12),
      name: user?.name ?? '',
      email: user?.email ?? '',
      role: RecipientRole.SIGNER,
    });
  };

  const onAddPlaceholderRecipient = () => {
    appendSigner({
      formId: nanoid(12),
      // Update TEMPLATE_RECIPIENT_NAME_PLACEHOLDER_REGEX if this is ever changed.
      name: `Recipient ${placeholderRecipientCount}`,
      // Update TEMPLATE_RECIPIENT_EMAIL_PLACEHOLDER_REGEX if this is ever changed.
      email: `recipient.${placeholderRecipientCount}@documenso.com`,
      role: RecipientRole.SIGNER,
    });

    setPlaceholderRecipientCount((count) => count + 1);
  };

  const onRemoveSigner = (index: number) => {
    removeSigner(index);
  };

  return (
    <>
      <DocumentFlowFormContainerContent>
        {isDocumentPdfLoaded &&
          fields.map((field, index) => (
            <ShowFieldItem key={index} field={field} recipients={recipients} />
          ))}

        <AnimateGenericFadeInOut motionKey={showAdvancedSettings ? 'Show' : 'Hide'}>
          <Form {...form}>
            <div className="flex w-full flex-col gap-y-2">
              {signers.map((signer, index) => (
                <motion.fieldset
                  key={signer.id}
                  data-native-id={signer.nativeId}
                  disabled={isSubmitting}
                  className={cn('grid grid-cols-8 gap-4 pb-4', {
                    'border-b pt-2': showAdvancedSettings,
                  })}
                >
                  <FormField
                    control={form.control}
                    name={`signers.${index}.email`}
                    render={({ field }) => (
                      <FormItem
                        className={cn('relative', {
                          'col-span-3': !showAdvancedSettings,
                          'col-span-4': showAdvancedSettings,
                        })}
                      >
                        {!showAdvancedSettings && index === 0 && (
                          <FormLabel required>Email</FormLabel>
                        )}

                        <FormControl>
                          <Input
                            type="email"
                            placeholder="Email"
                            {...field}
                            disabled={isSubmitting || signers[index].email === user?.email}
                          />
                        </FormControl>

                        <FormMessage />
                      </FormItem>
                    )}
                  />

                  <FormField
                    control={form.control}
                    name={`signers.${index}.name`}
                    render={({ field }) => (
                      <FormItem
                        className={cn({
                          'col-span-3': !showAdvancedSettings,
                          'col-span-4': showAdvancedSettings,
                        })}
                      >
                        {!showAdvancedSettings && index === 0 && <FormLabel>Name</FormLabel>}

                        <FormControl>
                          <Input
                            placeholder="Name"
                            {...field}
                            disabled={isSubmitting || signers[index].email === user?.email}
                          />
                        </FormControl>

                        <FormMessage />
                      </FormItem>
                    )}
                  />

                  {showAdvancedSettings && isEnterprise && (
                    <FormField
                      control={form.control}
                      name={`signers.${index}.actionAuth`}
                      render={({ field }) => (
                        <FormItem className="col-span-6">
                          <FormControl>
                            <RecipientActionAuthSelect
                              {...field}
                              onValueChange={field.onChange}
                              disabled={isSubmitting}
                            />
                          </FormControl>

                          <FormMessage />
                        </FormItem>
                      )}
                    />
                  )}

                  <FormField
                    name={`signers.${index}.role`}
                    render={({ field }) => (
                      <FormItem className="col-span-1 mt-auto">
                        <FormControl>
                          <RecipientRoleSelect
                            {...field}
                            onValueChange={field.onChange}
                            disabled={isSubmitting}
                          />
                        </FormControl>

                        <FormMessage />
                      </FormItem>
                    )}
                  />

                  <button
                    type="button"
                    className="col-span-1 mt-auto inline-flex h-10 w-10 items-center justify-center text-slate-500 hover:opacity-80 disabled:cursor-not-allowed disabled:opacity-50"
                    disabled={isSubmitting || signers.length === 1}
                    onClick={() => onRemoveSigner(index)}
                  >
                    <Trash className="h-5 w-5" />
                  </button>
                </motion.fieldset>
              ))}
            </div>

            <FormErrorMessage
              className="mt-2"
              // Dirty hack to handle errors when .root is populated for an array type
              error={'signers__root' in errors && errors['signers__root']}
            />

            <div
              className={cn('mt-2 flex flex-row items-center space-x-4', {
                'mt-4': showAdvancedSettings,
              })}
            >
              <Button
                type="button"
                className="flex-1"
                disabled={isSubmitting}
                onClick={() => onAddPlaceholderRecipient()}
              >
                <Plus className="-ml-1 mr-2 h-5 w-5" />
                Add Placeholder Recipient
              </Button>

              <Button
                type="button"
                className="dark:bg-muted dark:hover:bg-muted/80 bg-black/5 hover:bg-black/10"
                variant="secondary"
                disabled={
                  isSubmitting ||
                  form.getValues('signers').some((signer) => signer.email === user?.email)
                }
                onClick={() => onAddPlaceholderSelfRecipient()}
              >
                <Plus className="-ml-1 mr-2 h-5 w-5" />
                Add Myself
              </Button>
            </div>

            {!alwaysShowAdvancedSettings && isEnterprise && (
              <div className="mt-4 flex flex-row items-center">
                <Checkbox
                  id="showAdvancedRecipientSettings"
                  className="h-5 w-5"
                  checkClassName="dark:text-white text-primary"
                  checked={showAdvancedSettings}
                  onCheckedChange={(value) => setShowAdvancedSettings(Boolean(value))}
                />

                <label
                  className="text-muted-foreground ml-2 text-sm"
                  htmlFor="showAdvancedRecipientSettings"
                >
                  Show advanced settings
                </label>
              </div>
            )}
          </Form>
        </AnimateGenericFadeInOut>
      </DocumentFlowFormContainerContent>

      <DocumentFlowFormContainerFooter>
        <DocumentFlowFormContainerStep
          title={documentFlow.title}
          step={currentStep}
          maxStep={totalSteps}
        />

        <DocumentFlowFormContainerActions
          loading={isSubmitting}
          disabled={isSubmitting}
          canGoBack={currentStep > 1}
          onGoBackClick={() => previousStep()}
          onGoNextClick={() => void onFormSubmit()}
        />
      </DocumentFlowFormContainerFooter>
    </>
  );
};