mirror of
https://github.com/Frooodle/Stirling-PDF.git
synced 2025-10-25 11:17:28 +02:00
node based backend
This commit is contained in:
Felix Kaspar
parent
542d74b9cc
commit
76e37354e1
@ -12,6 +12,19 @@
|
|||||||
</head>
|
</head>
|
||||||
<body>
|
<body>
|
||||||
<input type="file" id="pdfFile" accept=".pdf">
|
<input type="file" id="pdfFile" accept=".pdf">
|
||||||
<a id="downloadLink" style="display: none;" download="modified.pdf">Download Modified PDF</a>
|
|
||||||
|
<ul id="operations">
|
||||||
|
|
||||||
|
</ul>
|
||||||
|
|
||||||
|
<select id="pdfOptions">
|
||||||
|
<option value="scaleContent">Scale Content</option>
|
||||||
|
<option value="changePageSize">Change Page Size</option>
|
||||||
|
<option value="mergePDFs">Merge PDFs</option>
|
||||||
|
<option value="splitPDFs">Split PDFs</option>
|
||||||
|
</select>
|
||||||
|
<button id="addButton">Add</button>
|
||||||
|
|
||||||
|
<button id="doneButton">Done</button>
|
||||||
</body>
|
</body>
|
||||||
</html>
|
</html>
|
||||||
194
public/index.js
194
public/index.js
@ -1,16 +1,192 @@
|
|||||||
import { scaleContent } from "./functions/scaleContent.js";
|
import { scaleContent } from "./functions/scaleContent.js";
|
||||||
import { scalePage, PageSize } from "./functions/scalePage.js";
|
import { scalePage, PageSize } from "./functions/scalePage.js";
|
||||||
|
import { organizeWaitOperations } from "./organizeWaitOperations.js";
|
||||||
|
import { testWorkflow } from "./testWorkflow.js";
|
||||||
|
|
||||||
(async () => {
|
(async (workflow) => {
|
||||||
const pdfFileInput = document.getElementById('pdfFile');
|
const pdfFileInput = document.getElementById('pdfFile');
|
||||||
|
const doneButton = document.getElementById("doneButton");
|
||||||
|
|
||||||
pdfFileInput.addEventListener('change', async (e) => {
|
doneButton.addEventListener('click', async (e) => {
|
||||||
const file = e.target.files[0];
|
const files = Array.from(pdfFileInput.files);
|
||||||
if (file) {
|
console.log(files);
|
||||||
let pdfBuffer = new Uint8Array(await file.arrayBuffer());
|
const pdfBuffers = await Promise.all(files.map(async file => {
|
||||||
pdfBuffer = await scaleContent(pdfBuffer, 2);
|
return {
|
||||||
pdfBuffer = await scalePage(pdfBuffer, PageSize.letter);
|
originalFileName: file.name.replace(/\.[^/.]+$/, ""),
|
||||||
download(pdfBuffer, "pdf-lib_creation_example.pdf", "application/pdf");
|
fileName: file.name.replace(/\.[^/.]+$/, ""),
|
||||||
|
buffer: new Uint8Array(await file.arrayBuffer())
|
||||||
}
|
}
|
||||||
|
}));
|
||||||
|
console.log(pdfBuffers);
|
||||||
|
|
||||||
|
const waitOperations = organizeWaitOperations(workflow.operations);
|
||||||
|
|
||||||
|
nextOperation(workflow.operations, pdfBuffers);
|
||||||
|
|
||||||
|
async function nextOperation(operations, input) {
|
||||||
|
if(Array.isArray(operations) && operations.length == 0) { // isEmpty
|
||||||
|
console.log("operation done: " + input.fileName);
|
||||||
|
//TODO: Download Restult
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
for (let i = 0; i < operations.length; i++) {
|
||||||
|
console.warn(input);
|
||||||
|
await computeOperation(operations[i], structuredClone(input)); // break references
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
async function computeOperation(operation, input) {
|
||||||
|
switch (operation.type) {
|
||||||
|
case "done":
|
||||||
|
console.log("Done operation will get called if all waits are done. Skipping for now.")
|
||||||
|
break;
|
||||||
|
case "wait":
|
||||||
|
const waitOperation = waitOperations[operation.values.id];
|
||||||
|
waitOperation.input.push(input);
|
||||||
|
waitOperation.waitCount--;
|
||||||
|
if(waitOperation.waitCount == 0) {
|
||||||
|
await nextOperation(waitOperation.doneOperation.operations, waitOperation.input);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case "removeObjects":
|
||||||
|
if(Array.isArray(input)) {
|
||||||
|
for (let i = 0; i < input.length; i++) {
|
||||||
|
// TODO: modfiy input
|
||||||
|
input[i].fileName += "_removedObjects";
|
||||||
|
await nextOperation(operation.operations, input[i]);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
// TODO: modfiy input
|
||||||
|
input.fileName += "_removedObjects";
|
||||||
|
await nextOperation(operation.operations, input);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case "extract":
|
||||||
|
if(Array.isArray(input)) {
|
||||||
|
for (let i = 0; i < input.length; i++) {
|
||||||
|
// TODO: modfiy input
|
||||||
|
input[i].fileName += "_extractedPages";
|
||||||
|
await nextOperation(operation.operations, input[i]);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
// TODO: modfiy input
|
||||||
|
input.fileName += "_extractedPages";
|
||||||
|
await nextOperation(operation.operations, input);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case "fillField":
|
||||||
|
if(Array.isArray(input)) {
|
||||||
|
for (let i = 0; i < input.length; i++) {
|
||||||
|
// TODO: modfiy input
|
||||||
|
input[i].fileName += "_filledField";
|
||||||
|
await nextOperation(operation.operations, input[i]);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
// TODO: modfiy input
|
||||||
|
input.fileName += "_filledField";
|
||||||
|
await nextOperation(operation.operations, input);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case "extractImages":
|
||||||
|
if(Array.isArray(input)) {
|
||||||
|
for (let i = 0; i < input.length; i++) {
|
||||||
|
// TODO: modfiy input
|
||||||
|
input[i].fileName += "_extractedImages";
|
||||||
|
await nextOperation(operation.operations, input[i]);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
// TODO: modfiy input
|
||||||
|
input.fileName += "_extractedImages";
|
||||||
|
await nextOperation(operation.operations, input);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case "merge":
|
||||||
|
if(Array.isArray(input)) {
|
||||||
|
input = {
|
||||||
|
originalFileName: input.map(input => input.originalFileName).join("_and_"),
|
||||||
|
fileName: input.map(input => input.fileName).join("_and_") + "_merged",
|
||||||
|
buffer: input[0].buffer // TODO: merge inputs
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
// TODO: modfiy input
|
||||||
|
input.fileName += "_merged";
|
||||||
|
}
|
||||||
|
await nextOperation(operation.operations, input);
|
||||||
|
break;
|
||||||
|
case "transform": {
|
||||||
|
if(Array.isArray(input)) {
|
||||||
|
for (let i = 0; i < input.length; i++) {
|
||||||
|
// TODO: modfiy input
|
||||||
|
input[i].fileName += "_transformed";
|
||||||
|
await nextOperation(operation.operations, input[i]);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
// TODO: modfiy input
|
||||||
|
input.fileName += "_transformed";
|
||||||
|
await nextOperation(operation.operations, input);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
default:
|
||||||
|
console.log("operation type unknown: ", operation.type);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
// if(selectedElementsList[0].textContent == "mergePDFs") {
|
||||||
|
|
||||||
|
// }
|
||||||
|
|
||||||
|
// // TODO: This can also be run serverside
|
||||||
|
// if(files.length > 1) {
|
||||||
|
// files.forEach(file => {
|
||||||
|
|
||||||
|
// });
|
||||||
|
// }
|
||||||
|
// else {
|
||||||
|
// const file = files[0];
|
||||||
|
// let pdfBuffer = new Uint8Array(await file.arrayBuffer());
|
||||||
|
// if (file) {
|
||||||
|
// for (let i = 0; i < selectedElementsList.length; i++) {
|
||||||
|
// const selectedOption = selectedElementsList[i];
|
||||||
|
|
||||||
|
// // Perform actions based on the selected option using the switch statement
|
||||||
|
// switch (selectedOption.textContent) {
|
||||||
|
// case "scaleContent":
|
||||||
|
// pdfBuffer = await scaleContent(pdfBuffer, 2);
|
||||||
|
// break;
|
||||||
|
// case "changePageSize":
|
||||||
|
// pdfBuffer = await scalePage(pdfBuffer, PageSize.letter);
|
||||||
|
// break;
|
||||||
|
// default:
|
||||||
|
// // Handle any other actions or errors here
|
||||||
|
// throw new Error(`This action ${selectedOption.value} has not been implemented.`);
|
||||||
|
// }
|
||||||
|
// }
|
||||||
|
// download(pdfBuffer, file.name.replace(/\.[^/.]+$/, "") + "_mod.pdf", "application/pdf");
|
||||||
|
// }
|
||||||
|
// }
|
||||||
});
|
});
|
||||||
})();
|
|
||||||
|
// document.getElementById("addButton").addEventListener("click", function() {
|
||||||
|
// const selectedOption = document.getElementById("pdfOptions").value;
|
||||||
|
// const operations = document.getElementById("operations");
|
||||||
|
|
||||||
|
// if (selectedOption) {
|
||||||
|
// const listItem = document.createElement("li");
|
||||||
|
// listItem.textContent = selectedOption;
|
||||||
|
// operations.appendChild(listItem);
|
||||||
|
// }
|
||||||
|
// });
|
||||||
|
})(testWorkflow);
|
||||||
|
|||||||
43
public/organizeWaitOperations.js
Normal file
43
public/organizeWaitOperations.js
Normal file
@ -0,0 +1,43 @@
|
|||||||
|
|
||||||
|
export function organizeWaitOperations(operations) {
|
||||||
|
|
||||||
|
// Initialize an object to store the counts and associated "done" operations
|
||||||
|
const waitCounts = {};
|
||||||
|
const doneOperations = {};
|
||||||
|
|
||||||
|
// Function to count "type: wait" operations and associate "done" operations per id
|
||||||
|
function countWaitOperationsAndDone(operations) {
|
||||||
|
for (const operation of operations) {
|
||||||
|
if (operation.type === "wait") {
|
||||||
|
const id = operation.values.id;
|
||||||
|
if (id in waitCounts) {
|
||||||
|
waitCounts[id]++;
|
||||||
|
} else {
|
||||||
|
waitCounts[id] = 1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (operation.type === "done") {
|
||||||
|
const id = operation.values.id;
|
||||||
|
doneOperations[id] = operation;
|
||||||
|
}
|
||||||
|
if (operation.operations) {
|
||||||
|
countWaitOperationsAndDone(operation.operations);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Start counting and associating from the root operations
|
||||||
|
countWaitOperationsAndDone(operations);
|
||||||
|
|
||||||
|
// Combine counts and associated "done" operations
|
||||||
|
const result = {};
|
||||||
|
for (const id in waitCounts) {
|
||||||
|
result[id] = {
|
||||||
|
waitCount: waitCounts[id],
|
||||||
|
doneOperation: doneOperations[id],
|
||||||
|
input: []
|
||||||
|
};
|
||||||
|
}
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
71
public/testWorkflow.js
Normal file
71
public/testWorkflow.js
Normal file
@ -0,0 +1,71 @@
|
|||||||
|
// JSON Representation of this Node Tree:
|
||||||
|
// https://discord.com/channels/1068636748814483718/1099390571493195898/1118192754103693483
|
||||||
|
// https://cdn.discordapp.com/attachments/1099390571493195898/1118192753759764520/image.png?ex=6537dba7&is=652566a7&hm=dc46820ef7c34bc37424794966c5f66f93ba0e15a740742c364d47d31ea119a9&
|
||||||
|
|
||||||
|
export const testWorkflow = {
|
||||||
|
outputOptions: {
|
||||||
|
zip: false,
|
||||||
|
awaitAllDone: true
|
||||||
|
},
|
||||||
|
operations: [
|
||||||
|
{
|
||||||
|
type: "extract",
|
||||||
|
values: { "index": "1" },
|
||||||
|
operations: [
|
||||||
|
{
|
||||||
|
type: "removeObjects",
|
||||||
|
values: { "objectNames": "photo, josh" },
|
||||||
|
operations: [
|
||||||
|
{
|
||||||
|
type: "wait",
|
||||||
|
values: { "id": 1 }
|
||||||
|
}
|
||||||
|
]
|
||||||
|
}
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
type: "extract",
|
||||||
|
values: { "index": "2-5" },
|
||||||
|
operations: [
|
||||||
|
{
|
||||||
|
type: "fillField",
|
||||||
|
values: { "objectName": "name", "inputValue": "Josh" },
|
||||||
|
operations: [
|
||||||
|
{
|
||||||
|
type: "wait",
|
||||||
|
values: { "id": 1 }
|
||||||
|
}
|
||||||
|
]
|
||||||
|
}
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
type: "done", // This gets called when the other merge-ops with the same id finish.
|
||||||
|
values: { "id": 1 },
|
||||||
|
operations: [
|
||||||
|
{
|
||||||
|
type: "merge", // This gets called when the other merge-ops with the same id finish.
|
||||||
|
values: {},
|
||||||
|
operations: []
|
||||||
|
}
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
type: "extractImages",
|
||||||
|
values: {},
|
||||||
|
operations: []
|
||||||
|
},
|
||||||
|
{
|
||||||
|
type: "merge", // This gets called when the other merge-ops with the same id finish.
|
||||||
|
values: {},
|
||||||
|
operations: [
|
||||||
|
{
|
||||||
|
type: "transform",
|
||||||
|
values: { "scale": "2x", "rotation": "90deg" },
|
||||||
|
operations: []
|
||||||
|
}
|
||||||
|
]
|
||||||
|
}
|
||||||
|
]
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user