#!/usr/bin/env node
/**
 * Test: Mobile Button Opacity - 50% default, 100% on hover
 *
 * Verifies that on mobile view (max-width: 900px):
 * - All fixed buttons have 50% opacity (0.5) by default
 * - Buttons become 100% opaque (1.0) on hover
 * - Buttons: download, print-friendly, shortcuts, theme-switcher, info
 */

import { chromium } from 'playwright';

const TEST_URL = 'http://localhost:1999';
const VIEWPORT_WIDTH = 375; // Mobile width
const VIEWPORT_HEIGHT = 812; // iPhone X height

async function testMobileButtonOpacity() {
  console.log('🧪 Testing Mobile Button Opacity (50% default, 100% hover)');
  console.log('='.repeat(70));

  const browser = await chromium.launch({ headless: true });
  const context = await browser.newContext({
    viewport: { width: VIEWPORT_WIDTH, height: VIEWPORT_HEIGHT },
    deviceScaleFactor: 2,
  });
  const page = await context.newPage();

  // Disable cache to ensure fresh CSS
  await page.route('**/*', (route) => {
    route.continue({
      headers: {
        ...route.request().headers(),
        'Cache-Control': 'no-cache, no-store, must-revalidate',
      },
    });
  });

  try {
    // Navigate to the page
    await page.goto(TEST_URL, { waitUntil: 'networkidle' });
    console.log(`✅ Navigated to ${TEST_URL}`);

    // Wait for page to be fully loaded
    await page.waitForTimeout(1000);

    // Test buttons
    const buttons = [
      { selector: '.download-btn', name: 'Download' },
      { selector: '.print-friendly-btn', name: 'Print Friendly' },
      { selector: '.shortcuts-btn', name: 'Shortcuts' },
      { selector: '.color-theme-switcher', name: 'Theme Switcher' },
      { selector: '.info-button', name: 'Info' },
    ];

    console.log('\n📱 Testing Mobile Button Opacities:');
    console.log('-'.repeat(70));

    let allTestsPassed = true;

    for (const button of buttons) {
      try {
        // Check if button exists
        const buttonElement = await page.$(button.selector);
        if (!buttonElement) {
          console.log(`❌ ${button.name}: Button not found`);
          allTestsPassed = false;
          continue;
        }

        // Get default opacity
        const defaultOpacity = await page.evaluate((sel) => {
          const btn = document.querySelector(sel);
          return btn ? window.getComputedStyle(btn).opacity : null;
        }, button.selector);

        // Test default opacity (should be 0.5)
        const defaultOpacityNum = parseFloat(defaultOpacity);
        const isDefaultCorrect = Math.abs(defaultOpacityNum - 0.5) < 0.01;

        if (isDefaultCorrect) {
          console.log(`✅ ${button.name}: Default opacity = ${defaultOpacity} (expected ~0.5)`);
        } else {
          console.log(`❌ ${button.name}: Default opacity = ${defaultOpacity} (expected ~0.5)`);
          allTestsPassed = false;
        }

        // Hover over button and check opacity
        await buttonElement.hover();
        await page.waitForTimeout(500); // Wait for transition

        const hoverOpacity = await page.evaluate((sel) => {
          const btn = document.querySelector(sel);
          return btn ? window.getComputedStyle(btn).opacity : null;
        }, button.selector);

        // Test hover opacity (should be 1.0)
        const hoverOpacityNum = parseFloat(hoverOpacity);
        const isHoverCorrect = Math.abs(hoverOpacityNum - 1.0) < 0.01;

        if (isHoverCorrect) {
          console.log(`   ✅ Hover opacity = ${hoverOpacity} (expected ~1.0)`);
        } else {
          console.log(`   ❌ Hover opacity = ${hoverOpacity} (expected ~1.0)`);
          allTestsPassed = false;
        }

        // Move mouse away to reset
        await page.mouse.move(0, 0);
        await page.waitForTimeout(500);

      } catch (error) {
        console.log(`❌ ${button.name}: Error - ${error.message}`);
        allTestsPassed = false;
      }
    }

    console.log('-'.repeat(70));

    if (allTestsPassed) {
      console.log('\n✅ ALL TESTS PASSED - Mobile button opacity working correctly!');
      console.log('   • Default opacity: 0.5 (50% transparent)');
      console.log('   • Hover opacity: 1.0 (fully opaque)');
    } else {
      console.log('\n❌ SOME TESTS FAILED - Check output above for details');
    }

    await browser.close();
    process.exit(allTestsPassed ? 0 : 1);

  } catch (error) {
    console.error('\n❌ Test error:', error);
    await browser.close();
    process.exit(1);
  }
}

// Run the test
testMobileButtonOpacity();