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Working (only tested Split yet but im tired)

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Felix Kaspar
2023-11-14 23:14:08 +01:00
parent d7feec32dd
commit 85d61fddf0
12 changed files with 164 additions and 136 deletions
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61
shared-operations/src/wrappers/PdfFile.ts
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@@ -1,75 +1,100 @@
import * as PDFJS from 'pdfjs-dist';
import { PDFDocumentProxy as PDFJSDocument } from 'pdfjs-dist/types/src/display/api';
import type { PDFDocumentProxy as PDFJSDocument } from 'pdfjs-dist/types/src/display/api';
import { PDFDocument as PDFLibDocument } from 'pdf-lib';
import Joi from 'joi';
export enum RepresentationType {
Uint8Array,
PDFLibDocument,
PDFJSDocument
}
export class PdfFile {
private representation: Uint8Array | PDFLibDocument | PDFJSDocument;
private representationType: RepresentationType;
originalFilename: string;
filename: string;
get uint8Array() : Promise<Uint8Array> {
switch (this.representation.constructor) {
case Uint8Array:
switch (this.representationType) {
case RepresentationType.Uint8Array:
return new Promise((resolve, reject) => {
resolve(this.representation as Uint8Array);
});
case PDFLibDocument:
return (this.representation as PDFLibDocument).save();
case PDFJSDocument:
return (this.representation as PDFJSDocument).getData();
case RepresentationType.PDFLibDocument:
return new Promise(async (resolve, reject) => {
var uint8Array = await (this.representation as PDFLibDocument).save();
this.uint8Array = uint8Array;
resolve(uint8Array);
});
case RepresentationType.PDFJSDocument:
return new Promise(async (resolve, reject) => {
var uint8Array = await (this.representation as PDFJSDocument).getData();
this.uint8Array = uint8Array;
resolve(uint8Array);
});
default:
console.error("unhandeled PDF type: " + typeof this.representation as string);
throw Error("unhandeled PDF type");
}
}
set uint8Array(value: Uint8Array) {
this.representation = value;
this.representationType = RepresentationType.Uint8Array;
}
get pdflibDocument() : Promise<PDFLibDocument> {
switch (this.representation.constructor) {
case PDFLibDocument: // PDFLib
switch (this.representationType) {
case RepresentationType.PDFLibDocument:
return new Promise((resolve, reject) => {
resolve(this.representation as PDFLibDocument);
});
default:
return new Promise(async (resolve, reject) => {
resolve(PDFLibDocument.load(await this.uint8Array, {
var uint8Array = await this.uint8Array;
var pdfLibDoc = await PDFLibDocument.load(uint8Array, {
updateMetadata: false,
}));
});
this.pdflibDocument = pdfLibDoc;
resolve(pdfLibDoc);
});
}
}
set pdflibDocument(value: PDFLibDocument) {
this.representation = value;
this.representationType = RepresentationType.PDFLibDocument;
}
get pdfjsDocuemnt() : Promise<PDFJSDocument> {
switch (this.representation.constructor) {
case PDFJSDocument:
get pdfjsDocument() : Promise<PDFJSDocument> {
switch (this.representationType) {
case RepresentationType.PDFJSDocument:
return new Promise((resolve, reject) => {
resolve(this.representation as PDFJSDocument);
});
default:
return new Promise(async (resolve, reject) => {
resolve(await PDFJS.getDocument(await this.uint8Array).promise);
const pdfjsDoc = await PDFJS.getDocument(await this.uint8Array).promise;
this.pdfjsDocument = pdfjsDoc;
resolve(pdfjsDoc);
});
}
}
set pdfjsDocuemnt(value: PDFJSDocument) {
set pdfjsDocument(value: PDFJSDocument) {
this.representation = value;
this.representationType = RepresentationType.PDFJSDocument;
}
constructor(originalFilename: string, representation: Uint8Array | PDFLibDocument | PDFJSDocument, filename?: string) {
constructor(originalFilename: string, representation: Uint8Array | PDFLibDocument | PDFJSDocument, representationType: RepresentationType, filename?: string) {
this.originalFilename = originalFilename;
this.filename = filename ? filename : originalFilename;
this.representation = representation;
this.representationType = representationType;
}
static fromMulterFile(value: Express.Multer.File): PdfFile {
return new PdfFile(value.originalname, value.buffer as Uint8Array)
return new PdfFile(value.originalname, value.buffer as Uint8Array, RepresentationType.Uint8Array);
}
static fromMulterFiles(values: Express.Multer.File[]): PdfFile[] {
return values.map(v => PdfFile.fromMulterFile(v));