[Python] Download a http link in the body of the mail with a particular subject name , label...

` I to download a link in the body of the mail to a specific path which starts from a https://storage.googleapis.com/..... or you can say 1st http link.

The mail is sent when i click Done button from a different webbrowser and mail consists of the subject with the timestamp of the click of the Done button in the browser in HH:MM:SS format. The subject also consists of some several strings in below format

superbi_download_NL_Upstream_Pendency_LH_Wed Aug 20 2025 17:03:54 GMT+0530

From: bigfoot-reporting@soandso.com

Label folder: bigfoot-reporting

i need to download the http link in the body of the mail with those strings with timestamp form the label folder sent by From to a specific path with file name similar to the subject line.

It still cannot find the email `

def wait_and_download_report_email_by_time(
service, start_ms, subject_time_hms, dest_dir,
subject_contains=REPORT_SUBJECT_CONTAINS,
from_addr=REPORT_FROM_ADDR, label_name=REPORT_LABEL_NAME,
max_wait_sec=5400, poll_sec=20, verbose=True):
`Wait for label'd email AFTER start_ms whose Subject contains HH:MM:SS; download first https link.`
deadline = time.time() + max_wait_sec
label_id = _gmail_get_label_id_by_name(service, label_name)
base_q = f'newer_than:7d from:{from_addr} subject:"{subject_contains}"'
if not label_id:
base_q = f"label:{label_name} " + base_q
if verbose:
print(f"Waitingfor'{subject_contains}'with time {subject_time_hms}in label '{label_name}'")
while time.time() < deadline:
try:
kwargs = dict(userId="me", q=base_q, maxResults=20)
if label_id: kwargs["labelIds"] = [label_id]
res = service.users().messages().list(**kwargs).execute()
for item in res.get("messages", []):
msg = service.users().messages().get(userId="me", id=item["id"]).execute()
internal_ms = int(msg.get("internalDate", "0"))
if internal_ms < int(start_ms): continue
headers = msg.get("payload", {}).get("headers", [])
subject = next((h["value"] for h in headers if h["name"]=="Subject"), "")
if subject_time_hms not in subject: continue
text = _gmail_get_full_text(msg)
url = _first_https_link(text)
if not url:
if verbose: print("Matching subject found but no https link; polling…")
continue
ts = time.strftime("%Y%m%d_%H%M%S", time.localtime(internal_ms/1000))
default_name = f"{(subject_contains or 'report').replace('','_')}_{ts}.csv"
local_path = download_signed_url(url, dest_dir, filename=default_name)
if verbose: print("Downloaded:", local_path)
return local_path
if verbose: print("…not yet; checking again")
except HttpError as e:
if verbose: print("⚠️ Gmail API error:", e)
time.sleep(poll_sec)
if verbose:
print("Report email not found (or no link) within wait window.")
return None


Inside main function

def main():
driver = setup_driver()
wait = WebDriverWait(driver, 20)
local_file = wait_and_download_report_email_by_time(
service=service_gmail,
start_ms=report_wait_start_ms,
subject_time_hms=subject_time_hms,
dest_dir=DOWNLOAD_PATH,
subject_contains=REPORT_SUBJECT_CONTAINS,
from_addr=REPORT_FROM_ADDR,
label_name=REPORT_LABEL_NAME,
max_wait_sec=5400, # up to 90 minutes
poll_sec=20,
verbose=True)


** get gmail id by name **

def _gmail_get_label_id_by_name(service, name):
try:
labels = service.users().labels().list(userId="me").execute().get("labels", [])
for lb in labels:
if lb.get("name","").lower() == name.lower():
return lb.get("id")
except HttpError:
pass
return None

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