// Prova nel browser vero (Chromium headless con swiftshader): titolo, partita giocata con clic veri
// fino alla fine, salvataggio e impaginazione su telefono. Schermate in $OUT (predefinito: /tmp/regolo-shots).
// npm run browser
import { chromium } from 'playwright';
import { spawn } from 'node:child_process';
import { mkdirSync } from 'node:fs';
import assert from 'node:assert/strict';
import { solution } from '../src/story/solution.js';

const OUT = process.env.OUT ?? '/tmp/regolo-shots', PORT = 8000 + Math.floor(Math.random() * 900);
mkdirSync(OUT, { recursive: true });
const server = spawn('python3', ['-m', 'http.server', String(PORT), '--bind', '127.0.0.1'], { stdio: 'ignore' });
const browser = await chromium.launch({ args: ['--use-gl=angle', '--use-angle=swiftshader', '--enable-unsafe-swiftshader'] });
const errors = [];

async function open(viewport) {
    const page = await browser.newPage({ viewport });
    page.on('pageerror', e => errors.push(e.message));
    page.on('console', m => m.type() === 'error' && errors.push(m.text()));
    for (let i = 0; i < 50; i++) {
        try { await page.goto(`http://127.0.0.1:${PORT}/`); break; } catch { await page.waitForTimeout(100); }
    }
    return page;
}

// Clic su un punto della scena (coordinate 640×360).
async function clickScene(page, [x, y]) {
    const r = await page.locator('#scene').boundingBox();
    await page.mouse.click(r.x + x / 640 * r.width, r.y + y / 360 * r.height);
}

// Aspetta che il gioco sia fermo, saltando le battute con la barra spaziatrice.
async function settle(page) {
    for (let i = 0; i < 400; i++) {
        const s = await page.evaluate(() => ({ speech: !!game.speech, idle: !game.busy && !game.walking && !game.queue.length && !game.task }));
        if (s.speech) await page.keyboard.press('Space');
        else if (s.idle) return;
        await page.waitForTimeout(50);
    }
    throw new Error('il gioco non si ferma');
}

const hotspotCenter = (page, id) => page.evaluate(id => { const h = game.hotspot(id); return [h.box[0] + h.box[2] / 2, h.box[1] + h.box[3] / 2]; }, id);

try {
    const page = await open({ width: 1280, height: 860 });
    await page.waitForSelector('#title:not([hidden])');
    await page.screenshot({ path: `${OUT}/01-titolo.png` });
    await page.click('#new-game');
    await page.waitForFunction(() => game.speech);
    await page.screenshot({ path: `${OUT}/02-inizio.png` });
    const fits = async p => p.evaluate(() => document.querySelector('#panel').getBoundingClientRect().bottom <= innerHeight);
    assert.ok(await fits(page), 'verbi e inventario fuori dallo schermo');
    await settle(page);

    for (const [verb, target, item] of solution) {
        if (verb === 'choose') {
            await page.locator('#choices li', { hasText: target }).click();
        } else {
            const smart = await page.evaluate(([v, t]) => game.defaultVerb(t) === v, [verb, target]);
            if (item) {
                await page.click(`#verbs [data-verb="${verb}"]`);
                await page.click(`#inventory [data-item="${item}"]`);
            } else if (!smart) await page.click(`#verbs [data-verb="${verb}"]`);
            await clickScene(page, await hotspotCenter(page, target));
        }
        await page.waitForTimeout(80);
        if (verb === 'talk') await page.screenshot({ path: `${OUT}/03-dialogo.png` });
        await settle(page);
        if (target === 'cosa_luccicante') await page.screenshot({ path: `${OUT}/04-squama.png` });
        if (target === 'verso_salita') await page.screenshot({ path: `${OUT}/05-salita.png` });
    }
    await page.waitForSelector('#ending:not([hidden])');
    await page.screenshot({ path: `${OUT}/06-fine.png` });
    const saved = await page.evaluate(() => JSON.parse(localStorage.getItem('leggenda-regolo-save')));
    assert.ok(saved.ended && saved.inventory.includes('squama'), 'salvataggio finale');

    // Una partita a metà riprende da dove era rimasta.
    await page.click('#restart');
    await settle(page);
    await clickScene(page, await hotspotCenter(page, 'verso_salita'));
    await settle(page);
    await page.reload();
    await page.waitForSelector('#continue:not([hidden])');
    await page.click('#continue');
    assert.equal(await page.evaluate(() => game.state.scene), 'salita');

    const phone = await open({ width: 390, height: 844 });
    await phone.click('#new-game');
    await settle(phone);
    const overflow = await phone.evaluate(() => document.documentElement.scrollWidth > innerWidth);
    assert.equal(overflow, false, 'scorrimento orizzontale su telefono');
    await phone.screenshot({ path: `${OUT}/07-telefono.png` });
    const landscape = await open({ width: 844, height: 390 });
    await landscape.click('#new-game');
    await settle(landscape);
    assert.equal(await landscape.evaluate(() => document.documentElement.scrollWidth > innerWidth), false);
    await landscape.screenshot({ path: `${OUT}/08-orizzontale.png`, fullPage: true });

    assert.deepEqual(errors, [], 'errori nella console');
    console.log(`Browser OK: soluzione completa, ripresa del salvataggio, telefono. Schermate in ${OUT}`);
} finally {
    await browser.close();
    server.kill();
}