snipe/scripts/probe_mercari.py
pyr0ball ad687fabfd
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fix(lint): auto-fix import sorting and unused imports across remaining files
ruff auto-fix pass: I001 import ordering and F401 unused imports across
pg_shared.py, mercari/adapter.py, scheduler.py, and test files.
2026-07-06 02:52:38 -07:00

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Python

"""One-shot Mercari probe using the same headed Chromium + Xvfb + stealth stack
as the eBay scraper. Run inside the snipe-api container:
docker exec -it snipe-api-1 python /app/scripts/probe_mercari.py
"""
from __future__ import annotations
import itertools
import os
import subprocess
import time
_display_counter = itertools.count(200)
_CHROMIUM_ARGS = ["--no-sandbox", "--disable-dev-shm-usage"]
_USER_AGENT = (
"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 "
"(KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36"
)
SEARCH_URL = "https://www.mercari.com/search/?keyword=rtx+4090"
# Give Cloudflare challenge time to resolve (if it does)
WAIT_MS = 8_000
def probe(url: str) -> str:
from playwright.sync_api import sync_playwright
from playwright_stealth import Stealth
display_num = next(_display_counter)
display = f":{display_num}"
env = os.environ.copy()
env["DISPLAY"] = display
xvfb = subprocess.Popen(
["Xvfb", display, "-screen", "0", "1280x800x24"],
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL,
)
time.sleep(0.5)
try:
with sync_playwright() as pw:
browser = pw.chromium.launch(
headless=False,
env=env,
args=_CHROMIUM_ARGS,
)
ctx = browser.new_context(
user_agent=_USER_AGENT,
viewport={"width": 1280, "height": 800},
)
page = ctx.new_page()
Stealth().apply_stealth_sync(page)
print(f"[probe] Navigating to {url}", flush=True)
response = page.goto(url, wait_until="domcontentloaded", timeout=40_000)
print(f"[probe] HTTP status: {response.status if response else 'unknown'}", flush=True)
print(f"[probe] Waiting {WAIT_MS}ms for JS / Turnstile …", flush=True)
page.wait_for_timeout(WAIT_MS)
html = page.content()
title = page.title()
print(f"[probe] Page title: {title!r}", flush=True)
browser.close()
finally:
xvfb.terminate()
xvfb.wait()
return html
def analyse(html: str) -> None:
from bs4 import BeautifulSoup
soup = BeautifulSoup(html, "html.parser")
# Cloudflare challenge indicators
if "Just a moment" in html or "cf-challenge" in html or "turnstile" in html.lower():
print("[result] BLOCKED — Cloudflare Turnstile still active")
return
print("[result] Cloudflare challenge NOT detected — page appears to have loaded")
# Try to find listing cards
# Mercari US uses data-testid or item cards in the DOM
candidates = [
soup.select("[data-testid='ItemCell']"),
soup.select("[data-testid='item-cell']"),
soup.select("li[data-testid]"),
soup.select(".merList .merListItem"),
soup.select("[class*='ItemCell']"),
soup.select("[class*='item-cell']"),
]
for sel_result in candidates:
if sel_result:
print(f"[result] Found {len(sel_result)} listing card(s) via selector")
card = sel_result[0]
print(f"[result] First card snippet:\n{card.prettify()[:800]}")
return
# Fallback: show body text summary
body = soup.find("body")
text = body.get_text(separator=" ", strip=True)[:500] if body else html[:500]
print(f"[result] No listing cards found. Body text preview:\n{text}")
# Save full HTML for manual inspection
out = "/tmp/mercari_probe.html"
with open(out, "w") as fh:
fh.write(html)
print(f"[result] Full HTML saved to {out}")
if __name__ == "__main__":
html = probe(SEARCH_URL)
analyse(html)