const { test } = require('node:test');
const assert = require('node:assert');
const { buildStudyLoadHtml } = require('../printdoc.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('buildStudyLoadHtml uses Letter page size', () => {
  const html = buildStudyLoadHtml(sampleData);
  assert.match(html, /@page\s*\{[^}]*size:\s*8\.5in\s*11in/i);
});

test('buildStudyLoadHtml includes title, student info, and table headers', () => {
  const html = buildStudyLoadHtml(sampleData);
  assert.ok(html.includes("STUDENT'S STUDY LOAD"));
  assert.ok(html.includes('ADRIAN ALFRED CHIONG BONPIN'));
  assert.ok(html.includes('22103625'));
  assert.ok(html.includes('Year Level: 4'));
  for (const h of ['GROUP', 'COURSE', 'COURSE DESCRIPTION', 'TEACHER', 'UNITS', 'NOTE']) {
    assert.ok(html.includes(h), 'missing header: ' + h);
  }
});

test('buildStudyLoadHtml includes course data, schedule, and total', () => {
  const html = buildStudyLoadHtml(sampleData);
  assert.ok(html.includes('CIS 2101'));
  assert.ok(html.includes('DATA STRUCTURES AND ALGORITHMS'));
  assert.ok(html.includes('M,W 03:00 PM - 05:30 PM LB443TC'));
  assert.ok(html.includes('6.00'));
});

test('buildStudyLoadHtml escapes user content', () => {
  const html = buildStudyLoadHtml({
    header: { fullName: '<script>alert(1)</script>' },
    courses: [{ group: '', courseCode: 'A&B', description: 'x"y', units: '1', teacher: '', schedule: '', status: 'R' }],
    totalUnits: '1.00'
  });
  assert.ok(!html.includes('<script>alert(1)</script>'), 'script must be escaped');
  assert.ok(html.includes('&lt;script&gt;'), 'script must appear escaped');
  assert.ok(html.includes('A&amp;B'), 'ampersand must be escaped');
});

test('buildStudyLoadHtml auto-prints on load', () => {
  const html = buildStudyLoadHtml(sampleData);
  assert.ok(/window\.print\(\)/.test(html), 'must call window.print()');
});