fix: show the fields on the document at the subject selection page

packages/ui/primitives/document-flow/add-fields.tsx

@@ -30,8 +30,7 @@ import {
   DocumentFlowFormContainerStep,
 } from './document-flow-root';
 import { FieldItem } from './field-item';
-import type { DocumentFlowStep } from './types';
-import { FRIENDLY_FIELD_TYPE } from './types';
+import { type DocumentFlowStep, FRIENDLY_FIELD_TYPE } from './types';
 
 const fontCaveat = Caveat({
   weight: ['500'],

packages/ui/primitives/document-flow/add-subject.tsx

@@ -38,6 +38,7 @@ import {
   DocumentFlowFormContainerHeader,
   DocumentFlowFormContainerStep,
 } from './document-flow-root';
+import { SubjectFieldItem } from './subject-field-item';
 import type { DocumentFlowStep } from './types';
 
 export type AddSubjectFormProps = {
@@ -98,6 +99,10 @@ export const AddSubjectFormPartial = ({
       />
       <DocumentFlowFormContainerContent>
         <div className="flex flex-col">
+          {fields.map((field, index) => (
+            <SubjectFieldItem key={index} field={field} recipients={recipients} />
+          ))}
+
           <div className="flex flex-col gap-y-4">
             <div>
               <Label htmlFor="subject">

packages/ui/primitives/document-flow/subject-field-item.tsx

@@ -0,0 +1,94 @@
+'use client';
+
+import { useCallback, useEffect, useState } from 'react';
+
+import { createPortal } from 'react-dom';
+import { Rnd } from 'react-rnd';
+
+import { PDF_VIEWER_PAGE_SELECTOR } from '@documenso/lib/constants/pdf-viewer';
+
+import { cn } from '../../lib/utils';
+import { Card, CardContent } from '../card';
+import { FRIENDLY_FIELD_TYPE } from './types';
+import type { Prisma } from '.prisma/client';
+
+type Field = Prisma.FieldGetPayload<null>;
+
+export type FieldItemProps = {
+  field: Field;
+  recipients: Prisma.RecipientGetPayload<null>[];
+};
+
+export const SubjectFieldItem = ({ field, recipients }: FieldItemProps) => {
+  const [coords, setCoords] = useState({
+    pageX: Number(field.positionX),
+    pageY: Number(field.positionY),
+    pageHeight: Number(field.height),
+    pageWidth: Number(field.width),
+  });
+
+  const signerEmail =
+    recipients.find((recipient) => recipient.id === field.recipientId)?.email ?? '';
+
+  const calculateCoords = useCallback(() => {
+    const $page = document.querySelector<HTMLElement>(
+      `${PDF_VIEWER_PAGE_SELECTOR}[data-page-number="${field.page}"]`,
+    );
+
+    if (!$page) {
+      return;
+    }
+
+    const { height, width } = $page.getBoundingClientRect();
+
+    const top = $page.getBoundingClientRect().top + window.scrollY;
+    const left = $page.getBoundingClientRect().left + window.scrollX;
+
+    // X and Y are percentages of the page's height and width
+    const pageX = (Number(field.positionX) / 100) * width + left;
+    const pageY = (Number(field.positionY) / 100) * height + top;
+
+    const pageHeight = (Number(field.height) / 100) * height;
+    const pageWidth = (Number(field.width) / 100) * width;
+
+    setCoords({
+      pageX: pageX,
+      pageY: pageY,
+      pageHeight: pageHeight,
+      pageWidth: pageWidth,
+    });
+  }, [field.page, field.positionX, field.positionY, field.height, field.width]);
+
+  useEffect(() => {
+    calculateCoords();
+  }, [calculateCoords]);
+
+  return createPortal(
+    <Rnd
+      key={coords.pageX + coords.pageY + coords.pageHeight + coords.pageWidth}
+      className={cn('pointer-events-none z-10 opacity-75')}
+      default={{
+        x: coords.pageX,
+        y: coords.pageY,
+        height: coords.pageHeight,
+        width: coords.pageWidth,
+      }}
+      bounds={`${PDF_VIEWER_PAGE_SELECTOR}[data-page-number="${field.page}"]`}
+    >
+      <Card className={cn('bg-background border-primary/80 h-full w-full')}>
+        <CardContent
+          className={cn(
+            'text-muted-foreground/50 flex h-full w-full flex-col items-center justify-center p-2',
+          )}
+        >
+          {FRIENDLY_FIELD_TYPE[field.type]}
+
+          <p className="text-muted-foreground/50 w-full truncate text-center text-xs">
+            {signerEmail}
+          </p>
+        </CardContent>
+      </Card>
+    </Rnd>,
+    document.body,
+  );
+};