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api event-stream

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This commit is contained in:
Felix Kaspar
2023-10-19 21:23:58 +02:00
parent 5203fc3605
commit be336f09de
2 changed files with 72 additions and 20 deletions
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24
traverseOperations.js
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@@ -5,13 +5,16 @@ import { rotatePages } from "./functions/rotatePDF.js";
import { splitPDF } from "./functions/splitPDF.js";
import { organizeWaitOperations } from "./public/organizeWaitOperations.js";
export async function traverseOperations(operations, input) {
export async function * traverseOperations(operations, input) {
const waitOperations = organizeWaitOperations(operations);
const results = [];
await nextOperation(operations, input);
for await (const value of nextOperation(operations, input)) {
yield value;
}
return results;
async function nextOperation(operations, input) {
// TODO: Pult all nextOperation() in the for await, like for "extract"
async function * nextOperation(operations, input) {
if(Array.isArray(operations) && operations.length == 0) { // isEmpty
console.log("operation done: " + input.fileName);
results.push(input);
@@ -19,11 +22,13 @@ export async function traverseOperations(operations, input) {
}
for (let i = 0; i < operations.length; i++) {
await computeOperation(operations[i], structuredClone(input)); // break references
for await (const value of computeOperation(operations[i], structuredClone(input))) {
yield value;
}
}
}
async function computeOperation(operation, input) {
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.")
@@ -57,13 +62,17 @@ export async function traverseOperations(operations, input) {
for (let i = 0; i < input.length; i++) {
input[i].fileName += "_extractedPages";
input[i].buffer = await extractPages(input[i].buffer, operation.values["pagesToExtractArray"]);
await nextOperation(operation.operations, input[i]);
for await (const value of nextOperation(operation.operations, input[i])) {
yield value;
}
}
}
else {
input.fileName += "_extractedPages";
input.buffer = await extractPages(input.buffer, operation.values["pagesToExtractArray"]);
await nextOperation(operation.operations, input);
for await (const value of nextOperation(operation.operations, input)) {
yield value;
}
}
break;
case "split":
@@ -202,5 +211,6 @@ export async function traverseOperations(operations, input) {
console.log("operation type unknown: ", operation.type);
break;
}
yield operation.type;
}
}