#!/usr/bin/env bun
/**
 * COLOR THEME SWITCHER TEST
 * ==========================
 * Tests color theme switcher functionality with dynamic colors
 * - Verifies button positioning (Download PDF and Print Friendly at top)
 * - Tests theme cycling (auto → light → dark → auto)
 * - Validates dynamic button colors per theme mode
 * - Confirms icon changes per theme
 * - Tests localStorage persistence
 */

import { chromium } from 'playwright';

const URL = "http://localhost:1999";

async function testColorThemeSwitcher() {
  console.log('🧪 COLOR THEME SWITCHER TEST\n');
  console.log('='.repeat(70));

  const browser = await chromium.launch({ headless: false });
  const page = await browser.newPage({ viewport: { width: 1920, height: 1080 } });

  const errors = [];
  const testResults = [];

  page.on('console', msg => {
    const text = msg.text();
    if (msg.type() === 'error') {
      errors.push(text);
      console.log(`❌ ERROR: ${text}`);
    }
  });

  page.on('pageerror', err => {
    errors.push(err.message);
    console.log(`❌ PAGE ERROR: ${err.message}`);
  });

  console.log("\n1️⃣  Loading page...");
  await page.goto(URL);
  await page.waitForTimeout(2000);

  // ========================================================================
  // TEST 1: Button Positioning
  // ========================================================================
  console.log("\n2️⃣  Testing button positioning...");

  const themeBtn = page.locator('#color-theme-switcher');
  const downloadBtn = page.locator('.download-btn');
  const printBtn = page.locator('.print-friendly-btn');
  const shortcutsBtn = page.locator('.shortcuts-btn');
  const backToTopBtn = page.locator('.back-to-top');

  const positions = {};
  const buttons = [
    { name: 'Download PDF', locator: downloadBtn },
    { name: 'Print Friendly', locator: printBtn },
    { name: 'Theme Switcher', locator: themeBtn },
    { name: 'Shortcuts', locator: shortcutsBtn },
    { name: 'Back to Top', locator: backToTopBtn }
  ];

  for (const btn of buttons) {
    const box = await btn.locator.boundingBox();
    if (box) {
      positions[btn.name] = box.y;
    }
  }

  // Verify order: smaller bottom value = higher on screen
  const expectedOrder = ['Download PDF', 'Print Friendly', 'Theme Switcher', 'Shortcuts', 'Back to Top'];
  let positionsCorrect = true;

  for (let i = 0; i < expectedOrder.length - 1; i++) {
    const current = positions[expectedOrder[i]];
    const next = positions[expectedOrder[i + 1]];
    if (current && next) {
      const isCorrect = current < next;
      if (!isCorrect) {
        positionsCorrect = false;
        console.log(`   ❌ ${expectedOrder[i]} should be above ${expectedOrder[i + 1]}`);
      }
    }
  }

  testResults.push({
    test: 'Button Positioning',
    passed: positionsCorrect,
    message: positionsCorrect ? 'Buttons in correct order (top to bottom)' : 'Button order incorrect'
  });

  console.log(`   ${positionsCorrect ? '✅' : '❌'} Button positioning: ${positionsCorrect ? 'CORRECT' : 'INCORRECT'}`);

  // ========================================================================
  // TEST 2: Theme Cycling and Dynamic Colors
  // ========================================================================
  console.log("\n3️⃣  Testing theme cycling and dynamic colors...");

  const themes = [
    { name: 'auto', color: 'rgb(155, 89, 182)', icon: 'mdi:theme-light-dark' },
    { name: 'light', color: 'rgb(243, 156, 18)', icon: 'mdi:white-balance-sunny' },
    { name: 'dark', color: 'rgb(52, 152, 219)', icon: 'mdi:moon-waning-crescent' },
    { name: 'auto', color: 'rgb(155, 89, 182)', icon: 'mdi:theme-light-dark' } // Cycle back
  ];

  let themeTestsPassed = true;

  for (let i = 0; i < themes.length; i++) {
    const theme = themes[i];

    if (i > 0) {
      await themeBtn.click();
      await page.waitForTimeout(500);
    }

    // Get current theme mode from document
    const currentMode = await page.evaluate(() =>
      document.documentElement.getAttribute('data-color-theme')
    );

    // Get button background color
    const bgColor = await themeBtn.evaluate(el =>
      window.getComputedStyle(el).backgroundColor
    );

    // Get button data attribute
    const dataMode = await themeBtn.getAttribute('data-theme-mode');

    // Get icon
    const iconName = await page.locator('#themeIcon').getAttribute('icon');

    const modeMatch = currentMode === theme.name;
    const colorMatch = bgColor === theme.color;
    const dataMatch = dataMode === theme.name;
    const iconMatch = iconName === theme.icon;

    const allMatch = modeMatch && colorMatch && dataMatch && iconMatch;

    console.log(`   ${i + 1}. Theme: ${theme.name.toUpperCase()}`);
    console.log(`      Document mode: ${currentMode} ${modeMatch ? '✓' : '✗'}`);
    console.log(`      Button data:   ${dataMode} ${dataMatch ? '✓' : '✗'}`);
    console.log(`      Icon:          ${iconName} ${iconMatch ? '✓' : '✗'}`);
    console.log(`      Color:         ${bgColor} ${colorMatch ? '✓' : '✗'}`);
    console.log(`      Status:        ${allMatch ? '✅ PASS' : '❌ FAIL'}`);

    if (!allMatch) themeTestsPassed = false;
  }

  testResults.push({
    test: 'Theme Cycling',
    passed: themeTestsPassed,
    message: themeTestsPassed ? 'All theme modes cycle correctly' : 'Theme cycling failed'
  });

  testResults.push({
    test: 'Dynamic Colors',
    passed: themeTestsPassed,
    message: themeTestsPassed ? 'Button colors change per theme mode' : 'Dynamic colors failed'
  });

  // ========================================================================
  // TEST 3: localStorage Persistence
  // ========================================================================
  console.log("\n4️⃣  Testing localStorage persistence...");

  // Set to light mode
  await themeBtn.click();
  await page.waitForTimeout(300);

  const storedTheme = await page.evaluate(() =>
    localStorage.getItem('color-theme-mode')
  );

  const persistenceWorks = storedTheme === 'light';

  testResults.push({
    test: 'localStorage Persistence',
    passed: persistenceWorks,
    message: persistenceWorks ? `Theme '${storedTheme}' saved to localStorage` : 'localStorage not saving theme'
  });

  console.log(`   ${persistenceWorks ? '✅' : '❌'} localStorage: ${persistenceWorks ? `'${storedTheme}' saved correctly` : 'FAILED'}`);

  // ========================================================================
  // TEST SUMMARY
  // ========================================================================
  console.log('\n' + '='.repeat(70));
  console.log('📊 TEST RESULTS');
  console.log('='.repeat(70) + '\n');

  const allPassed = testResults.every(r => r.passed);

  testResults.forEach(r => {
    console.log(`  ${r.passed ? '✅' : '❌'} ${r.test}: ${r.message}`);
  });

  console.log('\n' + '='.repeat(70));

  if (allPassed && errors.length === 0) {
    console.log('\n🎉 ALL COLOR THEME TESTS PASSED!\n');
    await browser.close();
    process.exit(0);
  } else {
    console.log('\n❌ SOME TESTS FAILED\n');
    if (errors.length > 0) {
      console.log(`Browser errors: ${errors.length}`);
    }
    console.log("\nBrowser will stay open for manual inspection.");
    console.log("Press Ctrl+C when done.\n");
    await new Promise(() => {}); // Keep browser open
  }
}

await testColorThemeSwitcher();