# ISMIS Helper Implementation Plan

> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.

**Goal:** Build a personal Firefox extension (MV3, no build step) for `ismis.usc.edu.ph` that provides auto-login, auto-accept of the privacy policy, and Study Load PDF generation.

**Architecture:** A single MV3 extension with a content script (auto-login, privacy accept, scraping), a background service worker (message routing + PDF generation), and a popup (profile manager + study-load editor). Pure parsing/PDF logic lives in UMD modules (`parsers.js`, `pdf.js`) shared between the browser and Node tests.

**Tech Stack:** Plain JavaScript, Manifest V3, `pdf-lib` (vendored), Node `node:test` for unit tests.

**Spec:** `docs/superpowers/specs/2026-08-18-ismis-helper-design.md`

---

## File Structure

```
ismis-helper/
├── manifest.json          # MV3 manifest
├── background.js          # service worker: message routing + PDF generation + download
├── content.js            # content script: auto-login, privacy accept, scraping
├── parsers.js            # UMD: parseStudyLoadTable, parseProfilePage, parseOfferedCourses
├── pdf.js                # UMD: buildStudyLoadPdf
├── popup.html            # popup UI
├── popup.js              # popup logic
├── popup.css             # popup styles
├── libs/pdf-lib.min.js   # vendored pdf-lib
├── icons/                # extension icons (16, 32, 48, 128)
├── test/
│   ├── parsers.test.js   # node:test for parsers
│   ├── pdf.test.js       # node:test for PDF builder
│   └── fixtures/         # real HTML samples (already extracted)
│       ├── study-load-table.html
│       ├── profile.html
│       └── offered-courses.html
└── package.json          # npm test script + pdf-lib devDependency
```

---

### Task 1: Project scaffold (manifest, package.json, icons)

**Files:**
- Create: `manifest.json`
- Create: `package.json`
- Create: `icons/icon16.png`, `icons/icon32.png`, `icons/icon48.png`, `icons/icon128.png`

- [ ] **Step 1: Write `manifest.json`**

```json
{
  "manifest_version": 3,
  "name": "ISMIS Helper",
  "version": "1.0.0",
  "description": "Auto-login, auto-accept privacy policy, and Study Load PDF for the USC ISMIS portal.",
  "permissions": ["storage", "downloads", "activeTab"],
  "host_permissions": ["https://ismis.usc.edu.ph/*"],
  "background": {
    "service_worker": "background.js"
  },
  "content_scripts": [
    {
      "matches": ["https://ismis.usc.edu.ph/*"],
      "js": ["parsers.js", "content.js"],
      "run_at": "document_idle"
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "ISMIS Helper",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}
```

- [ ] **Step 2: Write `package.json`**

```json
{
  "name": "ismis-helper",
  "version": "1.0.0",
  "private": true,
  "description": "Firefox extension for the USC ISMIS portal",
  "scripts": {
    "test": "node --test"
  },
  "devDependencies": {
    "pdf-lib": "^1.17.1"
  }
}
```

- [ ] **Step 3: Install pdf-lib and vendor the minified build**

Run:
```bash
cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper
npm install
cp node_modules/pdf-lib/dist/pdf-lib.min.js libs/pdf-lib.min.js
```
Expected: `libs/pdf-lib.min.js` exists and is non-empty.

- [ ] **Step 4: Generate icons**

Run (requires Python PIL; if unavailable, create 4 solid-color PNGs any way you like):
```bash
cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper
python3 -c "
from PIL import Image, ImageDraw
for size in (16,32,48,128):
    img = Image.new('RGBA',(size,size),(0,0,0,0))
    d = ImageDraw.Draw(img)
    d.rounded_rectangle([0,0,size-1,size-1], radius=size//5, fill=(0,102,153,255))
    # simple 'I' letter
    w = max(2, size//6)
    d.rectangle([size//2-w//2, size//5, size//2+w//2, size*4//5], fill=(255,255,255,255))
    img.save(f'icons/icon{size}.png')
print('icons written')
"
```
Expected: four PNG files in `icons/`.

- [ ] **Step 5: Commit**

```bash
cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper
git add manifest.json package.json package-lock.json libs/ icons/
git commit -m "chore: scaffold ISMIS Helper extension"
```

---

### Task 2: `parsers.js` — parseStudyLoadTable

**Files:**
- Create: `parsers.js`
- Test: `test/parsers.test.js`

- [ ] **Step 1: Write the failing test**

Create `test/parsers.test.js`:
```js
const { test } = require('node:test');
const assert = require('node:assert');
const fs = require('node:fs');
const path = require('node:path');
const { parseStudyLoadTable } = require('../parsers.js');

const fixture = fs.readFileSync(path.join(__dirname, 'fixtures', 'study-load-table.html'), 'utf8');

test('parseStudyLoadTable extracts all course rows', () => {
  const rows = parseStudyLoadTable(fixture);
  assert.strictEqual(rows.length, 5);
});

test('parseStudyLoadTable maps columns correctly', () => {
  const rows = parseStudyLoadTable(fixture);
  const first = rows[0];
  assert.strictEqual(first.group, '1');
  assert.strictEqual(first.courseCode, 'CS 5105');
  assert.strictEqual(first.units, '3.00');
  assert.strictEqual(first.status, 'DISSOLVED');
  assert.ok(first.schedule.includes('F 01:30 PM'));
});

test('parseStudyLoadTable handles empty faculty', () => {
  const rows = parseStudyLoadTable(fixture);
  const it4102 = rows.find(r => r.courseCode === 'IT 4102N');
  assert.strictEqual(it4102.faculty, '');
});
```

- [ ] **Step 2: Run test to verify it fails**

Run: `cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper && npm test`
Expected: FAIL — `Cannot find module '../parsers.js'`.

- [ ] **Step 3: Write `parsers.js`**

```js
(function (root, factory) {
  if (typeof module === 'object' && module.exports) {
    module.exports = factory();
  } else {
    root.ISMIStools = Object.assign(root.ISMIStools || {}, factory());
  }
})(typeof self !== 'undefined' ? self : this, function () {
  'use strict';

  function cleanText(s) {
    return String(s == null ? '' : s)
      .replace(/<[^>]+>/g, ' ')
      .replace(/&nbsp;/gi, ' ')
      .replace(/\s+/g, ' ')
      .trim();
  }

  function extractRows(html) {
    const rows = [];
    const trRe = /<tr[^>]*>([\s\S]*?)<\/tr>/gi;
    let trMatch;
    while ((trMatch = trRe.exec(html)) !== null) {
      const rowHtml = trMatch[1];
      if (/<th/i.test(rowHtml)) continue;
      const tds = [];
      const tdRe = /<td[^>]*>([\s\S]*?)<\/td>/gi;
      let tdMatch;
      while ((tdMatch = tdRe.exec(rowHtml)) !== null) {
        tds.push(cleanText(tdMatch[1]));
      }
      rows.push(tds);
    }
    return rows;
  }

  function parseStudyLoadTable(html) {
    return extractRows(html)
      .filter((tds) => tds.length >= 6)
      .map((tds) => ({
        group: tds[0],
        courseCode: tds[1],
        schedule: tds[2],
        faculty: tds[3],
        units: tds[4],
        status: tds[5]
      }));
  }

  return { parseStudyLoadTable };
});
```

- [ ] **Step 4: Run test to verify it passes**

Run: `cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper && npm test`
Expected: PASS (3 tests).

- [ ] **Step 5: Commit**

```bash
cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper
git add parsers.js test/parsers.test.js
git commit -m "feat: parse study load table"
```

---

### Task 3: `parsers.js` — parseProfilePage

**Files:**
- Modify: `parsers.js`
- Test: `test/parsers.test.js`

- [ ] **Step 1: Write the failing test**

Append to `test/parsers.test.js`:
```js
const { parseProfilePage } = require('../parsers.js');
const profileFixture = fs.readFileSync(path.join(__dirname, 'fixtures', 'profile.html'), 'utf8');

test('parseProfilePage extracts header fields', () => {
  const p = parseProfilePage(profileFixture);
  assert.strictEqual(p.fullName, 'ADRIAN ALFRED CHIONG BONPIN');
  assert.strictEqual(p.studentId, '22103625');
  assert.strictEqual(p.yearLevel, '4');
  assert.strictEqual(p.program, 'BACHELOR OF SCIENCE IN INFORMATION TECHNOLOGY');
  assert.strictEqual(p.semester, '1ST Semester 2026');
});
```

- [ ] **Step 2: Run test to verify it fails**

Run: `cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper && npm test`
Expected: FAIL — `parseProfilePage is not a function`.

- [ ] **Step 3: Add `parseProfilePage` to `parsers.js`**

Add inside the returned object and define the function:
```js
  function parseProfilePage(html) {
    const result = {};
    const bMatch = /<b>([\s\S]*?)<\/b>/i.exec(html);
    if (bMatch) result.program = cleanText(bMatch[1]);

    const smallMatch = /<small>([\s\S]*?)<\/small>/i.exec(html);
    if (smallMatch) {
      const lines = smallMatch[1].split(/<br\s*\/?>/i).map(cleanText).filter(Boolean);
      result.semester = lines[lines.length - 1] || '';
    }

    const kvRe = /<td[^>]*>([\s\S]*?)<\/td>\s*<td[^>]*class="bold"[^>]*>([\s\S]*?)<\/td>/gi;
    let m;
    while ((m = kvRe.exec(html)) !== null) {
      const key = cleanText(m[1]);
      const val = cleanText(m[2]);
      if (/full name/i.test(key)) result.fullName = val;
      else if (/student id/i.test(key)) result.studentId = val;
      else if (/year level/i.test(key)) result.yearLevel = val;
      else if (/student type/i.test(key)) result.studentType = val;
    }
    return result;
  }
```

Update the return statement:
```js
  return { parseStudyLoadTable, parseProfilePage };
```

- [ ] **Step 4: Run test to verify it passes**

Run: `cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper && npm test`
Expected: PASS (4 tests).

- [ ] **Step 5: Commit**

```bash
cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper
git add parsers.js test/parsers.test.js
git commit -m "feat: parse profile page header"
```

---

### Task 4: `parsers.js` — parseOfferedCourses

**Files:**
- Modify: `parsers.js`
- Test: `test/parsers.test.js`

- [ ] **Step 1: Write the failing test**

Append to `test/parsers.test.js`:
```js
const { parseOfferedCourses } = require('../parsers.js');
const offeredFixture = fs.readFileSync(path.join(__dirname, 'fixtures', 'offered-courses.html'), 'utf8');

test('parseOfferedCourses extracts course code and description', () => {
  const courses = parseOfferedCourses(offeredFixture);
  const it3206 = courses.find(c => c.courseCode === 'IT 3206');
  assert.ok(it3206, 'should find IT 3206');
  assert.strictEqual(it3206.description, 'INTEGRATIVE PROGRAMMING AND TECHNOLOGY');
});

test('parseOfferedCourses strips group suffix from code', () => {
  const courses = parseOfferedCourses(offeredFixture);
  assert.ok(courses.every(c => !/Group/.test(c.courseCode)));
});
```

- [ ] **Step 2: Run test to verify it fails**

Run: `cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper && npm test`
Expected: FAIL — `parseOfferedCourses is not a function`.

- [ ] **Step 3: Add `parseOfferedCourses` to `parsers.js`**

```js
  function parseOfferedCourses(html) {
    return extractRows(html)
      .filter((tds) => tds.length >= 2)
      .map((tds) => ({
        courseCode: tds[0].split('-')[0].trim(),
        description: tds[1]
      }));
  }
```

Update the return statement:
```js
  return { parseStudyLoadTable, parseProfilePage, parseOfferedCourses };
```

- [ ] **Step 4: Run test to verify it passes**

Run: `cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper && npm test`
Expected: PASS (6 tests).

- [ ] **Step 5: Commit**

```bash
cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper
git add parsers.js test/parsers.test.js
git commit -m "feat: parse offered courses descriptions"
```

---

### Task 5: `pdf.js` — buildStudyLoadPdf

**Files:**
- Create: `pdf.js`
- Test: `test/pdf.test.js`

- [ ] **Step 1: Write the failing test**

Create `test/pdf.test.js`:
```js
const { test } = require('node:test');
const assert = require('node:assert');
global.PDFLib = require('pdf-lib');
const { buildStudyLoadPdf } = require('../pdf.js');

const sampleData = {
  header: {
    fullName: 'ADRIAN ALFRED CHIONG BONPIN',
    studentId: '22103625',
    program: 'BACHELOR OF SCIENCE IN INFORMATION TECHNOLOGY',
    yearLevel: '4',
    semester: '1ST Semester 2026',
    dateEnrolled: '8/5/2024',
    dateRange: 'AUGUST - JANUARY'
  },
  courses: [
    { group: '7', courseCode: 'CIS 2101', description: 'DATA STRUCTURES AND ALGORITHMS', units: '3.00', teacher: 'CHRISTIAN MADERAZO', schedule: 'M,W 03:00 PM - 05:30 PM LB443TC', status: 'REGULAR' },
    { group: '2', courseCode: 'IT 3103N', description: 'SYSTEMS INTEGRATION AND ARCHITECTURE', units: '3.00', teacher: 'KHENT DELA PAZ', schedule: 'T,Th 01:30 PM - 03:00 PM DCISMVR3TC', status: 'REGULAR' }
  ],
  totalUnits: '6.00'
};

test('buildStudyLoadPdf returns valid PDF bytes', async () => {
  const bytes = await buildStudyLoadPdf(sampleData);
  assert.ok(bytes instanceof Uint8Array);
  const head = Buffer.from(bytes.slice(0, 5)).toString('latin1');
  assert.strictEqual(head, '%PDF-');
  const doc = await PDFLib.PDFDocument.load(bytes);
  assert.strictEqual(doc.getPageCount(), 1);
});
```

- [ ] **Step 2: Run test to verify it fails**

Run: `cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper && npm test`
Expected: FAIL — `Cannot find module '../pdf.js'`.

- [ ] **Step 3: Write `pdf.js`**

```js
(function (root, factory) {
  if (typeof module === 'object' && module.exports) {
    module.exports = factory();
  } else {
    root.ISMIStools = Object.assign(root.ISMIStools || {}, factory());
  }
})(typeof self !== 'undefined' ? self : this, function () {
  'use strict';

  function getPDFLib() {
    return (typeof self !== 'undefined' && self.PDFLib) ||
           (typeof globalThis !== 'undefined' && globalThis.PDFLib);
  }

  function wrapText(text, font, size, maxWidth) {
    const words = String(text).split(/\s+/).filter(Boolean);
    const lines = [];
    let line = '';
    for (const word of words) {
      const candidate = line ? line + ' ' + word : word;
      if (font.widthOfTextAtSize(candidate, size) <= maxWidth) {
        line = candidate;
      } else {
        if (line) lines.push(line);
        line = word;
      }
    }
    if (line) lines.push(line);
    return lines.length ? lines : [''];
  }

  function buildStudyLoadPdf(data) {
    const PDFLib = getPDFLib();
    const { PDFDocument, StandardFonts, rgb } = PDFLib;
    const header = data.header || {};
    const courses = data.courses || [];

    const doc = PDFDocument.create();
    const page = doc.addPage([612, 792]); // Letter
    const font = doc.getFont(StandardFonts.Helvetica);
    const bold = doc.getFont(StandardFonts.HelveticaBold);
    const margin = 50;
    const contentWidth = 612 - margin * 2;
    let y = 792 - 50;

    const black = rgb(0, 0, 0);
    const gray = rgb(0.3, 0.3, 0.3);

    function center(text, size, fontToUse, dy) {
      const w = fontToUse.widthOfTextAtSize(text, size);
      page.drawText(text, { x: (612 - w) / 2, y: y, size, font: fontToUse, color: black });
      y -= dy;
    }
    function left(text, size, fontToUse, x, dy) {
      page.drawText(text, { x, y, size, font: fontToUse, color: black });
      y -= dy;
    }

    // Header
    center(header.semester || '', 14, bold, 20);
    center("STUDENT'S STUDY LOAD", 16, bold, 24);
    center(header.dateRange || '', 11, font, 18);
    if (header.dateEnrolled) left('Date Enrolled: ' + header.dateEnrolled, 10, font, margin, 16);
    y -= 6;
    if (header.studentId) left('Student ID: ' + header.studentId, 10, font, margin, 14);
    if (header.fullName) left('Name: ' + header.fullName, 10, font, margin, 14);
    if (header.program) left('Program: ' + header.program, 10, font, margin, 14);
    if (header.yearLevel) left('Year Level: ' + header.yearLevel, 10, font, margin, 14);
    y -= 10;

    // 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 }
    ];
    const cellSize = 9;
    const headerSize = 9;

    function drawRow(cells, isHeader) {
      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) {
        // new page
        page.drawText('', { x: margin, y: y, size: 1, font, color: black });
        // (simple: just stop drawing further rows on overflow)
        return false;
      }
      // background for header
      if (isHeader) {
        page.drawRectangle({ x: margin, y: y - rowHeight, width: contentWidth, height: rowHeight, color: rgb(0.85, 0.9, 0.95) });
      }
      // cell borders
      page.drawRectangle({ x: margin, y: y - rowHeight, width: contentWidth, height: rowHeight, borderColor: black, borderWidth: 0.5 });
      for (const c of cols) {
        page.drawRectangle({ x: c.x, y: y - rowHeight, width: c.w, height: rowHeight, borderColor: black, borderWidth: 0.5 });
      }
      // text
      for (let i = 0; i < cols.length; i++) {
        const c = cols[i];
        const lines = linesPerCol[i];
        let ty = y - 10;
        for (const line of lines) {
          page.drawText(line, { x: c.x + 3, y: ty, size, font: f, color: black });
          ty -= 11;
        }
      }
      y -= rowHeight;
      return true;
    }

    // header row
    const headerCells = {};
    cols.forEach((c) => { headerCells[c.key] = c.label; });
    drawRow(headerCells, true);

    // data rows
    for (const course of courses) {
      const cells = {
        status: course.status,
        units: course.units,
        teacher: course.teacher,
        description: course.description,
        courseCode: course.courseCode,
        groupSchedule: (course.group ? course.group + ' ' : '') + (course.schedule || '')
      };
      if (!drawRow(cells, false)) break;
    }

    // Footer
    y -= 12;
    if (data.totalUnits) {
      page.drawText('Total Units: ' + data.totalUnits, { x: margin, y: y, size: 11, font: bold, color: black });
      y -= 16;
    }
    const printedBy = 'Printed by: ' + (header.studentId || '') + ' on ' + new Date().toLocaleDateString();
    page.drawText(printedBy, { x: margin, y: y, size: 9, font, color: gray });

    return doc.save(); // returns Promise<Uint8Array>
  }

  return { buildStudyLoadPdf };
});
```

- [ ] **Step 4: Run test to verify it passes**

Run: `cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper && npm test`
Expected: PASS (7 tests).

- [ ] **Step 5: Commit**

```bash
cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper
git add pdf.js test/pdf.test.js
git commit -m "feat: build study load PDF"
```

---

### Task 6: `content.js` — auto-login, privacy accept, scraping

**Files:**
- Create: `content.js`

- [ ] **Step 1: Write `content.js`**

```js
(function () {
  'use strict';

  const MASTER_KEY = 'enabled';

  async function isEnabled() {
    const { enabled } = await browser.storage.local.get(MASTER_KEY);
    return enabled !== false;
  }

  function autoAcceptPrivacy() {
    const modal = document.getElementById('myModal');
    if (!modal) return;
    const checkbox = document.getElementById('Confirmation');
    const submit = document.getElementById('Submit');
    if (checkbox && !checkbox.checked) checkbox.click();
    if (submit) submit.click();
  }

  function watchPrivacyModal() {
    autoAcceptPrivacy();
    const observer = new MutationObserver(() => autoAcceptPrivacy());
    observer.observe(document.body, { childList: true, subtree: true });
    setTimeout(() => observer.disconnect(), 30000);
  }

  async function autoLogin() {
    const { profiles } = await browser.storage.local.get('profiles');
    const active = (profiles || []).find((p) => p.enabled);
    if (!active) return;
    const userField = document.querySelector(
      'input[name="UserName"], input[name="username"], input[id="UserName"], input[id="username"]'
    );
    const passField = document.querySelector('input[type="password"]');
    if (!userField || !passField) return;
    userField.value = active.username;
    passField.value = active.password;
    userField.dispatchEvent(new Event('input', { bubbles: true }));
    passField.dispatchEvent(new Event('input', { bubbles: true }));
    const form = userField.closest('form') || passField.closest('form');
    if (!form) return;
    setTimeout(() => {
      const submitBtn = form.querySelector('input[type="submit"], button[type="submit"]');
      if (submitBtn) submitBtn.click();
      else form.submit();
    }, 300);
  }

  async function fetchCourseDescription(courseCode, academicPeriod, academicYear, token) {
    const body = new URLSearchParams();
    body.set('Courses', courseCode);
    body.set('AcademicPeriod', academicPeriod);
    body.set('AcademicYear', academicYear);
    body.set('AjaxFormVM.Controller', 'CourseSchedule');
    body.set('AjaxFormVM.Action', 'CourseScheduleOffered');
    body.set('AjaxFormVM.ResultTargetId', 'CourseScheduleOfferedList');
    body.set('AjaxFormVM.LinkToReturn', '');
    body.set('AjaxFormVM.LinkToReturnTargetId', '');
    body.set('AjaxFormVM.FormHeader', 'Choose term to view courses offered');
    body.set('AjaxFormVM.FormHeaderIcon', '');
    body.set('AjaxFormVM.FormId', 'CourseScheduleCourseScheduleOffered');
    body.set('AjaxFormVM.ShowCloseButton', 'True');
    body.set('AjaxFormVM.PreventAutoUpdateTarget', 'True');
    body.set('AjaxFormVM.CloseModalAfterSubmit', 'False');
    body.set('AjaxFormVM.AjaxFormType', 'Search');
    body.set('AjaxFormVM.FormNoteLocation', '');
    body.set('AjaxFormVM.SubmitButton.FaIcon', '');
    body.set('AjaxFormVM.SubmitButton.ButtonText', '');
    body.set('AjaxFormVM.SubmitButton.ButtonSize', '');
    body.set('__RequestVerificationToken', token);
    const resp = await fetch('/CourseSchedule/CourseScheduleOffered?Length=14', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
        'X-Requested-With': 'XMLHttpRequest'
      },
      body: body.toString(),
      credentials: 'same-origin'
    });
    const html = await resp.text();
    const courses = ISMIStools.parseOfferedCourses(html);
    const match = courses.find((c) => c.courseCode === courseCode);
    return match ? match.description : '';
  }

  function extractTotalUnits(text) {
    const m = /Total Units:\s*([\d.]+)/i.exec(text);
    return m ? m[1] : '';
  }

  async function scrapeStudyLoad() {
    const table = document.querySelector('table.table-forum');
    if (!table) throw new Error('No study load table found on this page.');
    const courses = ISMIStools.parseStudyLoadTable(table.outerHTML);
    if (!courses.length) throw new Error('No courses found in study load table.');

    const periodEl = document.getElementById('AcademicPeriod');
    const yearEl = document.getElementById('AcademicYear');
    const tokenEl = document.querySelector('input[name="__RequestVerificationToken"]');
    const academicPeriod = periodEl ? periodEl.value : '';
    const academicYear = yearEl ? yearEl.value : '';
    const token = tokenEl ? tokenEl.value : '';

    const uniqueCodes = [...new Set(courses.map((c) => c.courseCode))];
    const descMap = {};
    for (const code of uniqueCodes) {
      try {
        descMap[code] = await fetchCourseDescription(code, academicPeriod, academicYear, token);
      } catch (e) {
        descMap[code] = '';
      }
    }
    courses.forEach((c) => { c.description = descMap[c.courseCode] || ''; });

    let header = {};
    try {
      const resp = await fetch('/Manage/Student', { credentials: 'same-origin' });
      const html = await resp.text();
      header = ISMIStools.parseProfilePage(html);
    } catch (e) {
      header = {};
    }

    const totalUnits = extractTotalUnits(document.body.innerText);
    return { header, courses, totalUnits };
  }

  browser.runtime.onMessage.addListener((msg, sender, sendResponse) => {
    if (msg && msg.type === 'scrape-study-load') {
      scrapeStudyLoad()
        .then((data) => sendResponse({ ok: true, data }))
        .catch((err) => sendResponse({ ok: false, error: String((err && err.message) || err) }));
      return true; // async response
    }
  });

  (async function init() {
    if (!(await isEnabled())) return;
    watchPrivacyModal();
    if (/\/Account\/Login/i.test(location.href)) autoLogin();
  })();
})();
```

- [ ] **Step 2: Sanity-check syntax**

Run: `cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper && node --check content.js`
Expected: no output (syntax OK).

- [ ] **Step 3: Commit**

```bash
cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper
git add content.js
git commit -m "feat: content script for auto-login, privacy, scraping"
```

---

### Task 7: `background.js` — message routing + PDF generation

**Files:**
- Create: `background.js`

- [ ] **Step 1: Write `background.js`**

```js
'use strict';

importScripts('libs/pdf-lib.min.js', 'parsers.js', 'pdf.js');

function errMsg(err) {
  return String((err && err.message) || err);
}

browser.runtime.onMessage.addListener((msg, sender, sendResponse) => {
  if (msg && msg.type === 'scrape-study-load') {
    browser.tabs.query({ active: true, currentWindow: true })
      .then((tabs) => {
        const tab = tabs[0];
        if (!tab || tab.id == null) throw new Error('No active tab.');
        return browser.tabs.sendMessage(tab.id, { type: 'scrape-study-load' });
      })
      .then((data) => sendResponse(data))
      .catch((err) => sendResponse({ ok: false, error: errMsg(err) }));
    return true;
  }

  if (msg && msg.type === 'generate-pdf') {
    generatePdf(msg.data)
      .then(() => sendResponse({ ok: true }))
      .catch((err) => sendResponse({ ok: false, error: errMsg(err) }));
    return true;
  }
});

async function generatePdf(data) {
  const bytes = await ISMIStools.buildStudyLoadPdf(data);
  const blob = new Blob([bytes], { type: 'application/pdf' });
  const url = URL.createObjectURL(blob);
  const name = (data.header && data.header.fullName) || 'Student';
  const filename = 'Study Load - ' + name + '.pdf';
  await browser.downloads.download({ url, filename, saveAs: true });
  setTimeout(() => URL.revokeObjectURL(url), 10000);
}
```

- [ ] **Step 2: Sanity-check syntax**

Run: `cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper && node --check background.js`
Expected: no output (syntax OK).

- [ ] **Step 3: Commit**

```bash
cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper
git add background.js
git commit -m "feat: background message routing and PDF download"
```

---

### Task 8: Popup UI — profiles, master toggle, study-load editor

**Files:**
- Create: `popup.html`
- Create: `popup.css`
- Create: `popup.js`

- [ ] **Step 1: Write `popup.html`**

```html
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <link rel="stylesheet" href="popup.css">
</head>
<body>
  <header class="top">
    <h1>ISMIS Helper</h1>
    <div class="master">
      <label class="switch">
        <input type="checkbox" id="masterToggle">
        <span class="slider"></span>
      </label>
      <span id="masterLabel">Enabled</span>
    </div>
  </header>

  <nav class="tabs">
    <button data-tab="login" class="active">Auto-Login</button>
    <button data-tab="studyload">Study Load</button>
  </nav>

  <section id="tab-login" class="tab">
    <h2>Profiles</h2>
    <ul id="profileList" class="profile-list"></ul>
    <button id="addProfile" class="btn">+ Add Profile</button>
    <div id="profileForm" class="form" hidden>
      <input id="pName" placeholder="Profile name">
      <input id="pUsername" placeholder="Username">
      <input id="pPassword" type="password" placeholder="Password">
      <label class="row"><input type="checkbox" id="pEnabled"> Enabled</label>
      <div class="btn-row">
        <button id="saveProfile" class="btn primary">Save</button>
        <button id="cancelProfile" class="btn">Cancel</button>
      </div>
    </div>
  </section>

  <section id="tab-studyload" class="tab" hidden>
    <h2>Study Load PDF</h2>
    <button id="loadFromPortal" class="btn primary">Load from portal</button>
    <div id="studyLoadForm" class="form" hidden>
      <h3>Header</h3>
      <input id="hFullName" placeholder="Full name">
      <input id="hStudentId" placeholder="Student ID">
      <input id="hProgram" placeholder="Program">
      <input id="hYearLevel" placeholder="Year level">
      <input id="hSemester" placeholder="Semester">
      <input id="hDateEnrolled" placeholder="Date enrolled">
      <input id="hDateRange" placeholder="Date range (e.g. AUGUST - JANUARY)">
      <h3>Courses</h3>
      <div id="coursesEditor"></div>
      <button id="addCourse" class="btn">+ Add course</button>
      <input id="totalUnits" placeholder="Total units">
      <button id="generatePdf" class="btn primary">Generate PDF</button>
    </div>
    <div id="status" class="status"></div>
  </section>

  <script src="popup.js"></script>
</body>
</html>
```

- [ ] **Step 2: Write `popup.css`**

```css
* { box-sizing: border-box; }
body {
  width: 360px;
  margin: 0;
  font-family: system-ui, sans-serif;
  font-size: 13px;
  color: #222;
}
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  background: #006699;
  color: #fff;
}
.top h1 { margin: 0; font-size: 16px; }
.master { display: flex; align-items: center; gap: 6px; }
.switch { position: relative; display: inline-block; width: 40px; height: 22px; }
.switch input { display: none; }
.slider {
  position: absolute; cursor: pointer; inset: 0;
  background: #ccc; border-radius: 22px; transition: 0.2s;
}
.slider::before {
  content: ""; position: absolute; height: 18px; width: 18px;
  left: 2px; top: 2px; background: #fff; border-radius: 50%; transition: 0.2s;
}
.switch input:checked + .slider { background: #4caf50; }
.switch input:checked + .slider::before { transform: translateX(18px); }
.tabs { display: flex; border-bottom: 1px solid #ddd; }
.tabs button {
  flex: 1; padding: 8px; border: none; background: #f5f5f5; cursor: pointer;
}
.tabs button.active { background: #fff; font-weight: bold; border-bottom: 2px solid #006699; }
.tab { padding: 12px; }
.tab h2 { margin: 0 0 8px; font-size: 14px; }
.tab h3 { margin: 12px 0 6px; font-size: 12px; color: #555; }
.profile-list { list-style: none; margin: 0 0 8px; padding: 0; }
.profile-list li {
  display: flex; align-items: center; gap: 6px;
  padding: 6px; border: 1px solid #ddd; border-radius: 4px; margin-bottom: 6px;
}
.profile-list .name { flex: 1; }
.profile-list .user { color: #777; font-size: 11px; }
.btn {
  padding: 6px 10px; border: 1px solid #ccc; border-radius: 4px;
  background: #fff; cursor: pointer;
}
.btn.primary { background: #006699; color: #fff; border-color: #006699; }
.btn-row { display: flex; gap: 6px; margin-top: 6px; }
.form input {
  width: 100%; padding: 6px; margin-bottom: 6px;
  border: 1px solid #ccc; border-radius: 4px;
}
.form .row { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; }
.course-row {
  border: 1px solid #ddd; border-radius: 4px; padding: 6px; margin-bottom: 6px;
}
.course-row .grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.course-row input { margin-bottom: 4px; }
.status { margin-top: 8px; font-size: 12px; }
.status.error { color: #c00; }
.status.ok { color: #080; }
```

- [ ] **Step 3: Write `popup.js`**

```js
'use strict';

const $ = (sel) => document.querySelector(sel);

const MASTER_KEY = 'enabled';
const PROFILES_KEY = 'profiles';

let editingProfileId = null;

// ---- Master toggle ----
async function loadMaster() {
  const { enabled } = await browser.storage.local.get(MASTER_KEY);
  $('#masterToggle').checked = enabled !== false;
  $('#masterLabel').textContent = enabled === false ? 'Disabled' : 'Enabled';
}
$('#masterToggle').addEventListener('change', async (e) => {
  await browser.storage.local.set({ [MASTER_KEY]: e.target.checked });
  $('#masterLabel').textContent = e.target.checked ? 'Enabled' : 'Disabled';
});

// ---- Profiles ----
async function getProfiles() {
  const { profiles } = await browser.storage.local.get(PROFILES_KEY);
  return profiles || [];
}
async function saveProfiles(profiles) {
  await browser.storage.local.set({ [PROFILES_KEY]: profiles });
}

function renderProfiles(profiles) {
  const list = $('#profileList');
  list.innerHTML = '';
  for (const p of profiles) {
    const li = document.createElement('li');
    const name = document.createElement('div');
    name.className = 'name';
    name.innerHTML = '<strong>' + escapeHtml(p.name) + '</strong><br><span class="user">' + escapeHtml(p.username) + '</span>';
    const toggle = document.createElement('input');
    toggle.type = 'checkbox';
    toggle.checked = !!p.enabled;
    toggle.title = 'Enable/disable';
    toggle.addEventListener('change', async () => {
      p.enabled = toggle.checked;
      await saveProfiles(profiles);
    });
    const edit = document.createElement('button');
    edit.className = 'btn';
    edit.textContent = 'Edit';
    edit.addEventListener('click', () => openProfileForm(p));
    const del = document.createElement('button');
    del.className = 'btn';
    del.textContent = 'Delete';
    del.addEventListener('click', async () => {
      await saveProfiles(profiles.filter((x) => x.id !== p.id));
      renderProfiles(await getProfiles());
    });
    li.append(toggle, name, edit, del);
    list.appendChild(li);
  }
}

function escapeHtml(s) {
  return String(s).replace(/[&<>"']/g, (c) => ({
    '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#39;'
  }[c]));
}

function openProfileForm(p) {
  editingProfileId = p ? p.id : null;
  $('#pName').value = p ? p.name : '';
  $('#pUsername').value = p ? p.username : '';
  $('#pPassword').value = p ? p.password : '';
  $('#pEnabled').checked = p ? !!p.enabled : true;
  $('#profileForm').hidden = false;
}
$('#addProfile').addEventListener('click', () => openProfileForm(null));
$('#cancelProfile').addEventListener('click', () => { $('#profileForm').hidden = true; });
$('#saveProfile').addEventListener('click', async () => {
  const profiles = await getProfiles();
  const data = {
    id: editingProfileId || Date.now().toString(),
    name: $('#pName').value.trim(),
    username: $('#pUsername').value.trim(),
    password: $('#pPassword').value,
    enabled: $('#pEnabled').checked
  };
  if (!data.name || !data.username) return;
  if (editingProfileId) {
    const i = profiles.findIndex((x) => x.id === editingProfileId);
    if (i >= 0) profiles[i] = data;
  } else {
    profiles.push(data);
  }
  await saveProfiles(profiles);
  $('#profileForm').hidden = true;
  renderProfiles(profiles);
});

// ---- Tabs ----
document.querySelectorAll('.tabs button').forEach((btn) => {
  btn.addEventListener('click', () => {
    document.querySelectorAll('.tabs button').forEach((b) => b.classList.remove('active'));
    btn.classList.add('active');
    $('#tab-login').hidden = btn.dataset.tab !== 'login';
    $('#tab-studyload').hidden = btn.dataset.tab !== 'studyload';
  });
});

// ---- Study Load ----
function setStatus(msg, cls) {
  const el = $('#status');
  el.textContent = msg;
  el.className = 'status ' + (cls || '');
}

function renderCourses(courses) {
  const box = $('#coursesEditor');
  box.innerHTML = '';
  courses.forEach((c, i) => {
    const row = document.createElement('div');
    row.className = 'course-row';
    row.innerHTML =
      '<div class="grid">' +
      '<input data-i="' + i + '" data-f="group" placeholder="Group" value="' + escapeHtml(c.group || '') + '">' +
      '<input data-i="' + i + '" data-f="courseCode" placeholder="Course code" value="' + escapeHtml(c.courseCode || '') + '">' +
      '<input data-i="' + i + '" data-f="description" placeholder="Description" value="' + escapeHtml(c.description || '') + '">' +
      '<input data-i="' + i + '" data-f="units" placeholder="Units" value="' + escapeHtml(c.units || '') + '">' +
      '<input data-i="' + i + '" data-f="teacher" placeholder="Teacher" value="' + escapeHtml(c.teacher || '') + '">' +
      '<input data-i="' + i + '" data-f="status" placeholder="Status" value="' + escapeHtml(c.status || '') + '">' +
      '</div>' +
      '<input data-i="' + i + '" data-f="schedule" placeholder="Schedule" value="' + escapeHtml(c.schedule || '') + '">' +
      '<button class="btn remove-course" data-i="' + i + '">Remove</button>';
    box.appendChild(row);
  });
  box.querySelectorAll('input').forEach((inp) => {
    inp.addEventListener('input', () => {
      const i = +inp.dataset.i;
      const f = inp.dataset.f;
      studyLoadCourses[i][f] = inp.value;
    });
  });
  box.querySelectorAll('.remove-course').forEach((btn) => {
    btn.addEventListener('click', () => {
      studyLoadCourses.splice(+btn.dataset.i, 1);
      renderCourses(studyLoadCourses);
    });
  });
}

let studyLoadCourses = [];

$('#loadFromPortal').addEventListener('click', async () => {
  setStatus('Loading from portal...');
  try {
    const res = await browser.runtime.sendMessage({ type: 'scrape-study-load' });
    if (!res || !res.ok) throw new Error((res && res.error) || 'Scrape failed');
    const d = res.data;
    $('#hFullName').value = d.header.fullName || '';
    $('#hStudentId').value = d.header.studentId || '';
    $('#hProgram').value = d.header.program || '';
    $('#hYearLevel').value = d.header.yearLevel || '';
    $('#hSemester').value = d.header.semester || '';
    $('#hDateEnrolled').value = d.header.dateEnrolled || '';
    $('#hDateRange').value = d.header.dateRange || '';
    $('#totalUnits').value = d.totalUnits || '';
    studyLoadCourses = d.courses || [];
    renderCourses(studyLoadCourses);
    $('#studyLoadForm').hidden = false;
    setStatus('Loaded. Review and generate.', 'ok');
  } catch (err) {
    setStatus('Could not load from portal: ' + err.message + ' — enter manually below.', 'error');
    studyLoadCourses = [];
    renderCourses(studyLoadCourses);
    $('#studyLoadForm').hidden = false;
  }
});

$('#addCourse').addEventListener('click', () => {
  studyLoadCourses.push({ group: '', courseCode: '', description: '', units: '', teacher: '', schedule: '', status: '' });
  renderCourses(studyLoadCourses);
});

$('#generatePdf').addEventListener('click', async () => {
  const data = {
    header: {
      fullName: $('#hFullName').value.trim(),
      studentId: $('#hStudentId').value.trim(),
      program: $('#hProgram').value.trim(),
      yearLevel: $('#hYearLevel').value.trim(),
      semester: $('#hSemester').value.trim(),
      dateEnrolled: $('#hDateEnrolled').value.trim(),
      dateRange: $('#hDateRange').value.trim()
    },
    courses: studyLoadCourses,
    totalUnits: $('#totalUnits').value.trim()
  };
  if (!data.courses.length) { setStatus('Add at least one course.', 'error'); return; }
  setStatus('Generating PDF...');
  try {
    const res = await browser.runtime.sendMessage({ type: 'generate-pdf', data });
    if (!res || !res.ok) throw new Error((res && res.error) || 'Generation failed');
    setStatus('PDF downloaded.', 'ok');
  } catch (err) {
    setStatus('Error: ' + err.message, 'error');
  }
});

// ---- Init ----
(async function init() {
  await loadMaster();
  renderProfiles(await getProfiles());
})();
```

- [ ] **Step 4: Sanity-check syntax**

Run: `cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper && node --check popup.js`
Expected: no output (syntax OK).

- [ ] **Step 5: Commit**

```bash
cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper
git add popup.html popup.css popup.js
git commit -m "feat: popup UI for profiles and study load"
```

---

### Task 9: End-to-end manual verification in Firefox

**Files:** none (verification only)

- [ ] **Step 1: Run the full test suite**

Run: `cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper && npm test`
Expected: all tests PASS.

- [ ] **Step 2: Load the extension in Firefox**

1. Open Firefox → `about:debugging` → "This Firefox" → "Load Temporary Add-on".
2. Select `manifest.json` in `ismis-helper/`.
3. Confirm the extension appears with no load errors.

- [ ] **Step 3: Verify auto-login**
1. Open `https://ismis.usc.edu.ph/Account/Login`.
2. Add a profile in the popup (Auto-Login tab) and enable it.
3. Reload the login page. Expected: username/password filled and form submitted.

- [ ] **Step 4: Verify privacy auto-accept**
1. With the master toggle on, open any portal page that shows the privacy modal.
2. Expected: the `#myModal` modal is dismissed automatically.

- [ ] **Step 5: Verify master toggle**
1. Turn the master toggle OFF in the popup.
2. Reload the login page. Expected: no auto-fill/submit occurs.

- [ ] **Step 6: Verify Study Load PDF**
1. Open the Study Load page in the portal.
2. In the popup Study Load tab, click "Load from portal".
3. Expected: header and courses populate; descriptions filled in.
4. Click "Generate PDF". Expected: a PDF downloads matching the official layout.

- [ ] **Step 7: Verify manual fallback**
1. Open a non-portal page (or a portal page without the table).
2. Click "Load from portal". Expected: manual entry form appears.
3. Enter a course, click "Generate PDF". Expected: PDF downloads.

- [ ] **Step 8: Commit any fixes**

```bash
cd /Users/adrianbonpin/Documents/Code/personal/ismis-helper
git add -A
git commit -m "fix: verification adjustments"
```

---

## Self-Review

**Spec coverage:**
- Auto-login (fill + submit) → Task 6, Task 9.
- Master toggle → Task 8 (popup), Task 6 (content gate), Task 9.
- Auto-accept privacy policy → Task 6, Task 9.
- Profiles (add/edit/delete/toggle) → Task 8.
- Study Load scrape → Task 6.
- Description lookup via Offered Courses → Task 6 + Task 4 parser.
- Header from My Profile → Task 6 + Task 3 parser.
- Manual fallback → Task 8 (popup editor), Task 9.
- PDF generation replicating official look → Task 5.
- Download via downloads API → Task 7.

**Placeholder scan:** No TBD/TODO; all steps contain concrete code and commands.

**Type consistency:** `ISMIStools` namespace used consistently across `parsers.js`, `pdf.js`, `content.js`, `background.js`. Message types `scrape-study-load` and `generate-pdf` match between popup, background, and content. Data shape `{ header, courses, totalUnits }` consistent across scrape, popup, and PDF builder.