#!/usr/bin/env node

import { chromium } from 'playwright';

const MOBILE_VIEWPORT = { width: 375, height: 667 };

(async () => {
    const browser = await chromium.launch({ headless: true });

    console.log('🧪 Testing Button Centering on Mobile\n');

    // TEST 1: Android Portrait
    console.log('📱 TEST 1: Android Portrait (Pixel 5)\n');
    const androidContext = await browser.newContext({
        viewport: MOBILE_VIEWPORT,
        userAgent: 'Mozilla/5.0 (Linux; Android 11; Pixel 5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.91 Mobile Safari/537.36',
        hasTouch: true
    });
    const androidPage = await androidContext.newPage();

    await androidPage.goto('http://localhost:1999/?lang=en&view=extended');
    await androidPage.waitForLoadState('networkidle');

    const androidButtons = await androidPage.evaluate(() => {
        const viewport = {
            width: window.innerWidth,
            height: window.innerHeight
        };

        const buttons = {
            download: document.querySelector('.download-btn'),
            print: document.querySelector('.print-friendly-btn'),
            theme: document.querySelector('.color-theme-switcher'),
            info: document.querySelector('.info-button'),
            backToTop: document.querySelector('.back-to-top'),
            shortcuts: document.querySelector('.shortcuts-btn')
        };

        const positions = {};
        let leftmostButton = Infinity;
        let rightmostButton = 0;

        for (const [name, btn] of Object.entries(buttons)) {
            if (btn) {
                const rect = btn.getBoundingClientRect();
                const computed = window.getComputedStyle(btn);
                const visible = computed.display !== 'none';

                if (visible) {
                    positions[name] = {
                        left: Math.round(rect.left),
                        right: Math.round(rect.right),
                        centerX: Math.round(rect.left + rect.width / 2),
                        visible: true
                    };
                    leftmostButton = Math.min(leftmostButton, rect.left);
                    rightmostButton = Math.max(rightmostButton, rect.right);
                } else {
                    positions[name] = { visible: false };
                }
            }
        }

        const buttonBarWidth = rightmostButton - leftmostButton;
        const buttonBarCenterX = leftmostButton + buttonBarWidth / 2;
        const viewportCenterX = viewport.width / 2;
        const centeringOffset = Math.abs(buttonBarCenterX - viewportCenterX);

        return {
            viewport,
            positions,
            buttonBarWidth: Math.round(buttonBarWidth),
            buttonBarCenterX: Math.round(buttonBarCenterX),
            viewportCenterX: Math.round(viewportCenterX),
            centeringOffset: Math.round(centeringOffset),
            isCentered: centeringOffset < 10 // Within 10px is acceptable
        };
    });

    console.log('Android Button Positions:');
    Object.entries(androidButtons.positions).forEach(([name, pos]) => {
        if (pos.visible) {
            console.log(`  • ${name}: ${pos.left}px to ${pos.right}px (center: ${pos.centerX}px)`);
        } else {
            console.log(`  • ${name}: HIDDEN`);
        }
    });
    console.log(`\nButton Bar Analysis:`);
    console.log(`  • Button bar width: ${androidButtons.buttonBarWidth}px`);
    console.log(`  • Button bar center: ${androidButtons.buttonBarCenterX}px`);
    console.log(`  • Viewport center: ${androidButtons.viewportCenterX}px`);
    console.log(`  • Centering offset: ${androidButtons.centeringOffset}px`);
    console.log(`  • Is centered: ${androidButtons.isCentered ? '✅' : '❌'}\n`);

    await androidPage.screenshot({
        path: 'tests/screenshots/buttons-android-portrait.png',
        fullPage: true
    });

    await androidContext.close();

    // TEST 2: iPhone Portrait
    console.log('📱 TEST 2: iPhone Portrait (iPhone 12)\n');
    const iphoneContext = await browser.newContext({
        viewport: MOBILE_VIEWPORT,
        userAgent: 'Mozilla/5.0 (iPhone; CPU iPhone OS 15_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.0 Mobile/15E148 Safari/604.1',
        hasTouch: true
    });
    const iphonePage = await iphoneContext.newPage();

    await iphonePage.goto('http://localhost:1999/?lang=en&view=extended');
    await iphonePage.waitForLoadState('networkidle');

    const iphoneButtons = await iphonePage.evaluate(() => {
        const viewport = {
            width: window.innerWidth,
            height: window.innerHeight
        };

        const buttons = {
            download: document.querySelector('.download-btn'),
            print: document.querySelector('.print-friendly-btn'),
            theme: document.querySelector('.color-theme-switcher'),
            info: document.querySelector('.info-button'),
            backToTop: document.querySelector('.back-to-top')
        };

        const positions = {};
        let leftmostButton = Infinity;
        let rightmostButton = 0;

        for (const [name, btn] of Object.entries(buttons)) {
            if (btn) {
                const rect = btn.getBoundingClientRect();
                const computed = window.getComputedStyle(btn);
                const visible = computed.display !== 'none';

                if (visible) {
                    positions[name] = {
                        left: Math.round(rect.left),
                        right: Math.round(rect.right),
                        centerX: Math.round(rect.left + rect.width / 2),
                        visible: true
                    };
                    leftmostButton = Math.min(leftmostButton, rect.left);
                    rightmostButton = Math.max(rightmostButton, rect.right);
                } else {
                    positions[name] = { visible: false };
                }
            }
        }

        const buttonBarWidth = rightmostButton - leftmostButton;
        const buttonBarCenterX = leftmostButton + buttonBarWidth / 2;
        const viewportCenterX = viewport.width / 2;
        const centeringOffset = Math.abs(buttonBarCenterX - viewportCenterX);

        return {
            viewport,
            positions,
            buttonBarWidth: Math.round(buttonBarWidth),
            buttonBarCenterX: Math.round(buttonBarCenterX),
            viewportCenterX: Math.round(viewportCenterX),
            centeringOffset: Math.round(centeringOffset),
            isCentered: centeringOffset < 10
        };
    });

    console.log('iPhone Button Positions:');
    Object.entries(iphoneButtons.positions).forEach(([name, pos]) => {
        if (pos.visible) {
            console.log(`  • ${name}: ${pos.left}px to ${pos.right}px (center: ${pos.centerX}px)`);
        } else {
            console.log(`  • ${name}: HIDDEN`);
        }
    });
    console.log(`\nButton Bar Analysis:`);
    console.log(`  • Button bar width: ${iphoneButtons.buttonBarWidth}px`);
    console.log(`  • Button bar center: ${iphoneButtons.buttonBarCenterX}px`);
    console.log(`  • Viewport center: ${iphoneButtons.viewportCenterX}px`);
    console.log(`  • Centering offset: ${iphoneButtons.centeringOffset}px`);
    console.log(`  • Is centered: ${iphoneButtons.isCentered ? '✅' : '❌'}\n`);

    await iphonePage.screenshot({
        path: 'tests/screenshots/buttons-iphone-portrait.png',
        fullPage: true
    });

    await iphoneContext.close();

    const allPassed = androidButtons.isCentered && iphoneButtons.isCentered;

    console.log(`${allPassed ? '✅' : '❌'} Tests ${allPassed ? 'PASSED' : 'FAILED'}\n`);

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