Simple Vector Drawing App in Swift or SwiftUI

I need help with a simple vector drawing app I don’t have time to finish myself. Main purpose is to be able to create a PDF for printing a full size Poster (PDF) so graphic will be vectorised except for bitmap images. I want to implement a new SwiftUI (version 4) based on my older Swift App that was 80% done (version 3). The main functions needed are: * A Document Based App with a Custom Document Format; A folder with a main json-file and Images support undo * Possible to add a Figure which is built up of layers: * Predefined shapes (like square, rectangle, star, circle etc) OR one Custom Shape (drawn with via PencilKit) * A border (color and width) following the shape * A Mask which is the shape (and border) * A Text (see text) * A Background image or a Color * Layers * Figure Layers (that includes figures) * Drawing (Apple PencilKit) * Text * Templates; Heading 1, Heading 2, Body or ”no style” called Free Style * Any changes to H1; H2 or Body will update all figures that is of that Template * Changeable * Color should be changeable for the figure * Font * Bold/italic/light/black/etc * Tools: * Main Tool: * Add Figure * Picker or Draw * Edit text * Layer tool * Tab 1: Change order of Layers * Tab 2: Change order of Figures * Text tool, edit * Font * Size * Style; bold/italic/light/heavy etc * Export * PDF (PDFKit) – for printing * Bitmap – for social media etc * Overall functions * Do/Undo * Generalla comments: * Images from camera or photo book * Colors are RGB + transparency