feat: add envelopes (#2025)

This PR is handles the changes required to support envelopes. The new
envelope editor/signing page will be hidden during release.

The core changes here is to migrate the documents and templates model to
a centralized envelopes model.

Even though Documents and Templates are removed, from the user
perspective they will still exist as we remap envelopes to documents and
templates.

packages/lib/universal/field-renderer/render-field.ts

@@ -0,0 +1,78 @@
+import type { Signature } from '@prisma/client';
+import { type Field, FieldType } from '@prisma/client';
+import type Konva from 'konva';
+import { match } from 'ts-pattern';
+
+import type { TRecipientColor } from '@documenso/ui/lib/recipient-colors';
+
+import type { TFieldMetaSchema } from '../../types/field-meta';
+import { renderCheckboxFieldElement } from './render-checkbox-field';
+import { renderDropdownFieldElement } from './render-dropdown-field';
+import { renderRadioFieldElement } from './render-radio-field';
+import { renderSignatureFieldElement } from './render-signature-field';
+import { renderTextFieldElement } from './render-text-field';
+
+export const MIN_FIELD_HEIGHT_PX = 12;
+export const MIN_FIELD_WIDTH_PX = 36;
+
+export type FieldToRender = Pick<
+  Field,
+  'envelopeItemId' | 'recipientId' | 'type' | 'page' | 'customText' | 'inserted' | 'recipientId'
+> & {
+  renderId: string; // A unique ID for the field in the render.
+  width: number;
+  height: number;
+  positionX: number;
+  positionY: number;
+  fieldMeta?: TFieldMetaSchema | null;
+  signature?: Signature | null;
+};
+
+type RenderFieldOptions = {
+  field: FieldToRender;
+  pageLayer: Konva.Layer;
+  pageWidth: number;
+  pageHeight: number;
+
+  color?: TRecipientColor;
+
+  /**
+   * The render type.
+   *
+   * @default 'edit'
+   *
+   * - `edit` - The field is rendered in edit mode.
+   * - `sign` - The field is rendered in sign mode. No interactive elements.
+   * - `export` - The field is rendered in export mode. No backgrounds, interactive elements, etc.
+   */
+  mode: 'edit' | 'sign' | 'export';
+
+  editable?: boolean;
+};
+
+export const renderField = ({
+  field,
+  pageLayer,
+  pageWidth,
+  pageHeight,
+  mode,
+  editable,
+  color,
+}: RenderFieldOptions) => {
+  const options = {
+    pageLayer,
+    pageWidth,
+    pageHeight,
+    mode,
+    color,
+    editable,
+  };
+
+  return match(field.type)
+    .with(FieldType.TEXT, () => renderTextFieldElement(field, options))
+    .with(FieldType.CHECKBOX, () => renderCheckboxFieldElement(field, options))
+    .with(FieldType.RADIO, () => renderRadioFieldElement(field, options))
+    .with(FieldType.DROPDOWN, () => renderDropdownFieldElement(field, options))
+    .with(FieldType.SIGNATURE, () => renderSignatureFieldElement(field, options))
+    .otherwise(() => renderTextFieldElement(field, options)); // Todo
+};