- Refactor PDF loading across workflow nodes to use loadPdfDocument utility

- Replaced direct calls to PDFDocument.load with loadPdfDocument in multiple nodes to standardize PDF loading process.

src/js/utils/ghostscript-loader.ts

@@ -4,12 +4,9 @@
  * Requires user to configure Ghostscript URL in WASM Settings.
  */
 
-import {
-  getWasmBaseUrl,
-  fetchWasmFile,
-  isWasmAvailable,
-} from '../config/wasm-cdn-config.js';
-import { PDFDocument, PDFDict, PDFName, PDFArray } from 'pdf-lib';
+import { getWasmBaseUrl, isWasmAvailable } from '../config/wasm-cdn-config.js';
+import { PDFDict, PDFName, PDFArray } from 'pdf-lib';
+import { loadPdfDocument } from './load-pdf-document.js';
 
 interface GhostscriptModule {
   FS: {
@@ -160,7 +157,9 @@ export async function convertToPdfA(
     );
   } catch (e) {
     console.error('[Ghostscript] Failed to setup PDF/A assets:', e);
-    throw new Error('Conversion failed: could not create PDF/A definition');
+    throw new Error('Conversion failed: could not create PDF/A definition', {
+      cause: e,
+    });
   }
 
   const args = [
@@ -200,7 +199,7 @@ export async function convertToPdfA(
     exitCode = gs.callMain(args);
   } catch (e) {
     console.error('[Ghostscript] Exception:', e);
-    throw new Error(`Ghostscript threw an exception: ${e}`);
+    throw new Error(`Ghostscript threw an exception: ${e}`, { cause: e });
   }
 
   console.log('[Ghostscript] Exit code:', exitCode);
@@ -208,23 +207,23 @@ export async function convertToPdfA(
   if (exitCode !== 0) {
     try {
       gs.FS.unlink(inputPath);
-    } catch {
-      /* ignore */
+    } catch (e) {
+      console.warn('[Ghostscript] Failed to clean up temp file:', e);
     }
     try {
       gs.FS.unlink(outputPath);
-    } catch {
-      /* ignore */
+    } catch (e) {
+      console.warn('[Ghostscript] Failed to clean up temp file:', e);
     }
     try {
       gs.FS.unlink(iccPath);
-    } catch {
-      /* ignore */
+    } catch (e) {
+      console.warn('[Ghostscript] Failed to clean up temp file:', e);
     }
     try {
       gs.FS.unlink(pdfaDefPath);
-    } catch {
-      /* ignore */
+    } catch (e) {
+      console.warn('[Ghostscript] Failed to clean up temp file:', e);
     }
     throw new Error(`Ghostscript conversion failed with exit code ${exitCode}`);
   }
@@ -237,29 +236,29 @@ export async function convertToPdfA(
     output = gs.FS.readFile(outputPath);
   } catch (e) {
     console.error('[Ghostscript] Failed to read output:', e);
-    throw new Error('Ghostscript did not produce output file');
+    throw new Error('Ghostscript did not produce output file', { cause: e });
   }
 
   // Cleanup
   try {
     gs.FS.unlink(inputPath);
-  } catch {
-    /* ignore */
+  } catch (e) {
+    console.warn('[Ghostscript] Failed to clean up temp file:', e);
   }
   try {
     gs.FS.unlink(outputPath);
-  } catch {
-    /* ignore */
+  } catch (e) {
+    console.warn('[Ghostscript] Failed to clean up temp file:', e);
   }
   try {
     gs.FS.unlink(iccPath);
-  } catch {
-    /* ignore */
+  } catch (e) {
+    console.warn('[Ghostscript] Failed to clean up temp file:', e);
   }
   try {
     gs.FS.unlink(pdfaDefPath);
-  } catch {
-    /* ignore */
+  } catch (e) {
+    console.warn('[Ghostscript] Failed to clean up temp file:', e);
   }
 
   if (level !== 'PDF/A-1b') {
@@ -282,8 +281,7 @@ export async function convertToPdfA(
 async function addPageGroupDictionaries(
   pdfData: Uint8Array
 ): Promise<Uint8Array> {
-  const pdfDoc = await PDFDocument.load(pdfData, {
-    ignoreEncryption: true,
+  const pdfDoc = await loadPdfDocument(pdfData, {
     updateMetadata: false,
   });
 
@@ -352,7 +350,7 @@ async function addPageGroupDictionaries(
   }
 
   if (iccProfileRef) {
-    pdfDoc.context.enumerateIndirectObjects().forEach(([ref, obj]) => {
+    pdfDoc.context.enumerateIndirectObjects().forEach(([_ref, obj]) => {
       if (
         obj instanceof PDFDict ||
         (obj && typeof obj === 'object' && 'dict' in obj)
@@ -437,17 +435,23 @@ export async function convertFontsToOutlines(
   } catch (e) {
     try {
       gs.FS.unlink(inputPath);
-    } catch {}
-    throw new Error(`Ghostscript threw an exception: ${e}`);
+    } catch (e2) {
+      console.warn('[Ghostscript] Failed to clean up temp file:', e2);
+    }
+    throw new Error(`Ghostscript threw an exception: ${e}`, { cause: e });
   }
 
   if (exitCode !== 0) {
     try {
       gs.FS.unlink(inputPath);
-    } catch {}
+    } catch (e) {
+      console.warn('[Ghostscript] Failed to clean up temp file:', e);
+    }
     try {
       gs.FS.unlink(outputPath);
-    } catch {}
+    } catch (e) {
+      console.warn('[Ghostscript] Failed to clean up temp file:', e);
+    }
     throw new Error(`Ghostscript conversion failed with exit code ${exitCode}`);
   }
 
@@ -455,15 +459,19 @@ export async function convertFontsToOutlines(
   try {
     output = gs.FS.readFile(outputPath);
   } catch (e) {
-    throw new Error('Ghostscript did not produce output file');
+    throw new Error('Ghostscript did not produce output file', { cause: e });
   }
 
   try {
     gs.FS.unlink(inputPath);
-  } catch {}
+  } catch (e) {
+    console.warn('[Ghostscript] Failed to clean up temp file:', e);
+  }
   try {
     gs.FS.unlink(outputPath);
-  } catch {}
+  } catch (e) {
+    console.warn('[Ghostscript] Failed to clean up temp file:', e);
+  }
 
   return output;
 }