#!/usr/bin/env python3
"""The reels HUD: up when you're using it, down when you're swiping past it.

Run against a locally running backend:

    backend/main.py &
    .venv/bin/python tests/smoke_hud.py

One panel and one swipe, deliberately: what's under test is when the controls
come and go, not anything about the layout.

The presses here are dispatched rather than clicked, because moving a mouse is
itself a reason to wake the HUD and would hide what is being asked.
"""
import sys
from playwright.sync_api import sync_playwright

BASE = "http://127.0.0.1:5000/"
SERVER = "https://hottubapp.io"
CHANNEL = "xvideos"

SEED = """([server, channel]) => {
    localStorage.setItem('config', JSON.stringify({ servers: [{ [server]: {} }] }));
    localStorage.setItem('preferences', JSON.stringify({ [server]: { channelId: channel } }));
    localStorage.removeItem('session');
}"""

IDLE = """() => document.getElementById('feed-view').classList.contains('feed-hud-idle')"""

PRESS = """(selector) => {
    const el = document.querySelector('.feed-slide.is-active ' + selector);
    if (!el) return 'missing';
    el.dispatchEvent(new PointerEvent('pointerdown', { bubbles: true }));
    return document.getElementById('feed-view').classList.contains('feed-hud-idle');
}"""

SWIPE = """() => {
    const s = document.getElementById('feed-scroll');
    s.scrollTop += s.clientHeight;
}"""


class Checks:
    def __init__(self):
        self.failed = 0

    def ok(self, label, condition, detail=""):
        mark = "PASS" if condition else "FAIL"
        if not condition:
            self.failed += 1
        print(f"  [{mark}] {label}" + (f" -- {detail}" if detail and not condition else ""))


def main():
    c = Checks()
    with sync_playwright() as p:
        browser = p.chromium.launch(args=[
            "--no-sandbox",
            "--disable-dev-shm-usage",
            "--disable-gpu",
            "--autoplay-policy=no-user-gesture-required",
            "--renderer-process-limit=1",
            "--js-flags=--max-old-space-size=512",
        ])
        page = browser.new_page(viewport={"width": 430, "height": 930})
        crashes = []
        page.on("pageerror", lambda e: crashes.append(str(e)))

        page.goto(BASE, wait_until="domcontentloaded")
        page.evaluate(SEED, [SERVER, CHANNEL])
        page.goto(BASE, wait_until="load")
        try:
            page.wait_for_selector(".video-card", timeout=90000)
        except Exception:
            # One reload, in case the status refresh or the listing failed.
            page.goto(BASE, wait_until="load")
            page.wait_for_selector(".video-card", timeout=90000)
        page.wait_for_timeout(2500)
        page.evaluate("() => App.feed.open()")
        page.wait_for_selector(".feed-slide", timeout=20000)
        page.wait_for_timeout(400)

        print("\nopening the feed")
        c.ok("the controls are up to start with", page.evaluate(IDLE) is False)

        print("\nleaving it alone")
        page.wait_for_timeout(1600)
        c.ok("they fade on their own", page.evaluate(IDLE) is True)

        print("\nswiping to the next reel")
        page.evaluate(SWIPE)
        page.wait_for_timeout(300)
        c.ok("the swipe does not put them back up mid-flight", page.evaluate(IDLE) is True)
        page.wait_for_timeout(2500)
        c.ok("nor once it has landed", page.evaluate(IDLE) is True)
        c.ok("and the reel it landed on is playing",
             page.evaluate("""() => {
                 const v = document.querySelector('.feed-slide.is-active .feed-video');
                 return !!v && !v.paused;
             }"""))

        print("\nwhat does bring them back")
        c.ok("pressing the video -- which is how a swipe begins -- does not",
             page.evaluate(PRESS, ".feed-video") is True)
        c.ok("pressing a control does", page.evaluate(PRESS, ".feed-pane-mute") is False)
        page.wait_for_timeout(1600)
        c.ok("after which they fade again", page.evaluate(IDLE) is True)
        page.mouse.move(200, 400)
        page.mouse.move(210, 420)
        page.wait_for_timeout(200)
        c.ok("moving the mouse does too", page.evaluate(IDLE) is False)

        print("\na swipe started while they are up")
        c.ok("puts them away", (page.evaluate(SWIPE), page.wait_for_timeout(500),
                                page.evaluate(IDLE))[2] is True)

        c.ok("nothing threw along the way", not crashes, str(crashes[:2]))
        browser.close()

    print(f"\n{'OK' if not c.failed else 'FAILED'}: {c.failed} check(s) failed")
    return 1 if c.failed else 0


sys.exit(main())