pdf.js

@@ -36,7 +36,7 @@
     const courses = data.courses || [];
 
     const doc = await PDFDocument.create();
-    const page = doc.addPage([612, 792]); // Letter
+    let page = doc.addPage([612, 792]); // Letter
     const font = doc.embedStandardFont(StandardFonts.Helvetica);
     const bold = doc.embedStandardFont(StandardFonts.HelveticaBold);
     const margin = 50;
@@ -70,12 +70,12 @@
 
     // Table columns: NOTE, UNITS, TEACHER, COURSE DESCRIPTION, COURSE, GROUP
     const cols = [
-      { key: 'status', label: 'NOTE', x: margin, w: 40 },
-      { key: 'units', label: 'UNITS', x: margin + 40, w: 45 },
-      { key: 'teacher', label: 'TEACHER', x: margin + 85, w: 110 },
-      { key: 'description', label: 'COURSE DESCRIPTION', x: margin + 195, w: 150 },
-      { key: 'courseCode', label: 'COURSE', x: margin + 345, w: 70 },
-      { key: 'groupSchedule', label: 'GROUP', x: margin + 415, w: 97 }
+      { key: 'status', label: 'NOTE', x: margin, w: 50 },
+      { key: 'units', label: 'UNITS', x: margin + 50, w: 45 },
+      { key: 'teacher', label: 'TEACHER', x: margin + 95, w: 110 },
+      { key: 'description', label: 'COURSE DESCRIPTION', x: margin + 205, w: 150 },
+      { key: 'courseCode', label: 'COURSE', x: margin + 355, w: 70 },
+      { key: 'groupSchedule', label: 'GROUP', x: margin + 425, w: 87 }
     ];
     const cellSize = 9;
     const headerSize = 9;
@@ -84,10 +84,12 @@
       const f = isHeader ? bold : font;
       const size = isHeader ? headerSize : cellSize;
       const linesPerCol = cols.map((c) => wrapText(cells[c.key] || '', f, size, c.w - 6));
-      const rowHeight = Math.max.apply(null, linesPerCol.map((l) => l.length)) * 11 + 8;
-      if (y - rowHeight < 50) {
-        page.drawText('', { x: margin, y: y, size: 1, font, color: black });
-        return false;
+      const rowHeight = Math.max(...linesPerCol.map((l) => l.length)) * 11 + 8;
+      if (!isHeader && y - rowHeight < 50) {
+        // Row doesn't fit on the current page: start a new page and re-draw the header.
+        page = doc.addPage([612, 792]);
+        y = 792 - 50;
+        drawHeaderRow();
       }
       if (isHeader) {
         page.drawRectangle({ x: margin, y: y - rowHeight, width: contentWidth, height: rowHeight, color: rgb(0.85, 0.9, 0.95) });
@@ -109,9 +111,13 @@
       return true;
     }
 
+    function drawHeaderRow() {
       const headerCells = {};
       cols.forEach((c) => { headerCells[c.key] = c.label; });
       drawRow(headerCells, true);
+    }
+
+    drawHeaderRow();
 
     for (const course of courses) {
       const cells = {

test/pdf.test.js

@@ -1,5 +1,9 @@
 const { test } = require('node:test');
 const assert = require('node:assert');
+const fs = require('node:fs');
+const os = require('node:os');
+const path = require('node:path');
+const { execFileSync } = require('node:child_process');
 global.PDFLib = require('pdf-lib');
 const { buildStudyLoadPdf } = require('../pdf.js');
 
@@ -20,6 +24,20 @@ const sampleData = {
   totalUnits: '6.00'
 };
 
+function extractPdfText(bytes) {
+  const tmp = path.join(os.tmpdir(), 'study-load-test.pdf');
+  fs.writeFileSync(tmp, Buffer.from(bytes));
+  const script = [
+    'import fitz',
+    `doc = fitz.open('${tmp}')`,
+    'text = ""',
+    'for page in doc:',
+    '    text += page.get_text()',
+    'print(text)'
+  ].join('\n');
+  return execFileSync('python3', ['-c', script], { encoding: 'utf8' });
+}
+
 test('buildStudyLoadPdf returns valid PDF bytes', async () => {
   const bytes = await buildStudyLoadPdf(sampleData);
   assert.ok(bytes instanceof Uint8Array);
@@ -27,4 +45,8 @@ test('buildStudyLoadPdf returns valid PDF bytes', async () => {
   assert.strictEqual(head, '%PDF-');
   const doc = await PDFLib.PDFDocument.load(bytes);
   assert.strictEqual(doc.getPageCount(), 1);
+
+  const text = extractPdfText(bytes);
+  assert.ok(text.includes('CIS 2101'), 'PDF text should contain course code CIS 2101');
+  assert.ok(text.includes("STUDENT'S STUDY LOAD"), 'PDF text should contain the title');
 });