Made split pdf functions conform to the new design pattern.

shared-operations/src/functions/splitPagesByPreset.ts

@@ -0,0 +1,44 @@
+
+import { PdfFile } from '../wrappers/PdfFile.js';
+import { splitPagesByIndex } from "./common/splitPagesByIndex.js";
+import { detectEmptyPages } from "./common/detectEmptyPages.js";
+import { detectQRCodePages } from "./common/detectQRCodePages.js";
+
+export type SplitOnParamsType = {
+    file: PdfFile;
+    type: "BAR_CODE"|"QR_CODE"|"BLANK_PAGE";
+    whiteThreashold?: number;
+}
+export async function splitPagesByPreset(params: SplitOnParamsType): Promise<PdfFile[]> {
+    const { file, type, whiteThreashold } = params;
+
+    console.log("File: ", file);
+
+    let splitAtPages: number[];
+    switch (type) {
+        case "BAR_CODE":
+            // TODO: Implement
+            throw new Error("This split-type has not been implemented yet");
+
+        case "QR_CODE":
+            splitAtPages = await detectQRCodePages(file);
+            break;
+
+        case "BLANK_PAGE":
+            if (!whiteThreashold)
+                throw new Error("White threshold not provided");
+            splitAtPages = await detectEmptyPages(file, whiteThreashold);
+            break;
+    
+        default:
+            throw new Error("An invalid split-type was provided.");
+    }
+
+    console.debug("Split At Pages: ", splitAtPages);
+
+    const newFiles = await splitPagesByIndex(file, splitAtPages);
+    for (let i = 0; i < newFiles.length; i++) {
+        newFiles[i].filename += "_split-"+i;
+    }
+    return newFiles;
+};