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Fix CI failures: add backend/conftest.py for module resolution and run black formatting

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- Add backend/conftest.py that inserts the backend directory into sys.path,
  fixing ModuleNotFoundError when pytest runs from the backend/ directory
  (as CI does with `cd backend && pytest tests/`)
- Run black formatter on all 28 backend files that needed reformatting
- All 53 tests pass with both `pytest tests/` and `python -m pytest tests/`

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
Agent-Logs-Url: https://github.com/christianlouis/pop_puller_to_gmail/sessions/beb47db2-da25-416a-8fb0-c1452a3b22a7
This commit is contained in:
copilot-swe-agent[bot]
2026-03-23 10:24:28 +00:00
parent 681e0582f6
commit bcbef88803
29 changed files with 863 additions and 693 deletions
Download Patch File Download Diff File Expand all files Collapse all files
backend/app/services/mail_processor.py
+181 -168
View File
@@ -2,6 +2,7 @@
Mail processing service for fetching and forwarding emails.
Supports both POP3 and IMAP protocols with secure connections.
"""
import asyncio
import poplib
import smtplib
@@ -23,31 +24,35 @@ logger = logging.getLogger(__name__)
class MailConnectionError(Exception):
"""Raised when unable to connect to mail server"""
pass
class MailAuthenticationError(Exception):
"""Raised when authentication fails"""
pass
class MailFetchError(Exception):
"""Raised when fetching emails fails"""
pass
class MailForwardError(Exception):
"""Raised when forwarding email fails"""
pass
class MailProcessor:
"""Handles mail fetching and forwarding operations"""
def __init__(self, account: MailAccount, decrypted_password: str):
self.account = account
self.password = decrypted_password
async def test_connection(self) -> Tuple[bool, str]:
"""
Test connection to mail server.
@@ -61,12 +66,12 @@ class MailProcessor:
except Exception as e:
logger.error(f"Connection test failed: {e}")
return False, str(e)
async def _test_pop3_connection(self) -> Tuple[bool, str]:
"""Test POP3 connection"""
try:
loop = asyncio.get_event_loop()
# Run blocking POP3 operations in thread pool
def connect_pop3():
if self.account.protocol == MailProtocol.POP3_SSL:
@@ -75,29 +80,27 @@ class MailProcessor:
self.account.host,
self.account.port,
context=context,
timeout=10
timeout=10,
)
else:
pop_conn = poplib.POP3(
self.account.host,
self.account.port,
timeout=10
self.account.host, self.account.port, timeout=10
)
# Try authentication
pop_conn.user(self.account.username)
pop_conn.pass_(self.password)
# Get mailbox stats
message_count, mailbox_size = pop_conn.stat()
pop_conn.quit()
return message_count, mailbox_size
message_count, mailbox_size = await loop.run_in_executor(None, connect_pop3)
return True, f"Connection successful. {message_count} messages in mailbox."
except poplib.error_proto as e:
error_msg = str(e)
if "authentication" in error_msg.lower() or "auth" in error_msg.lower():
@@ -105,66 +108,62 @@ class MailProcessor:
return False, f"POP3 protocol error: {error_msg}"
except Exception as e:
return False, f"Connection failed: {str(e)}"
async def _test_imap_connection(self) -> Tuple[bool, str]:
"""Test IMAP connection"""
try:
# Create IMAP client
if self.account.protocol == MailProtocol.IMAP_SSL:
imap_client = aioimaplib.IMAP4_SSL(
host=self.account.host,
port=self.account.port,
timeout=10
host=self.account.host, port=self.account.port, timeout=10
)
else:
imap_client = aioimaplib.IMAP4(
host=self.account.host,
port=self.account.port,
timeout=10
host=self.account.host, port=self.account.port, timeout=10
)
await imap_client.wait_hello_from_server()
# Authenticate
response = await imap_client.login(self.account.username, self.password)
if response.result != 'OK':
if response.result != "OK":
return False, f"Authentication failed: {response.lines}"
# Select inbox
await imap_client.select('INBOX')
await imap_client.select("INBOX")
# Get message count
response = await imap_client.search('ALL')
response = await imap_client.search("ALL")
message_ids = response.lines[0].split()
message_count = len(message_ids)
await imap_client.logout()
return True, f"Connection successful. {message_count} messages in mailbox."
except Exception as e:
return False, f"IMAP connection failed: {str(e)}"
async def fetch_emails(self, max_count: Optional[int] = None) -> List[bytes]:
"""
Fetch emails from the mail server.
Returns list of raw email data.
"""
max_count = max_count or self.account.max_emails_per_check
if self.account.protocol in [MailProtocol.POP3, MailProtocol.POP3_SSL]:
return await self._fetch_pop3_emails(max_count)
else:
return await self._fetch_imap_emails(max_count)
async def _fetch_pop3_emails(self, max_count: int) -> List[bytes]:
"""Fetch emails via POP3"""
emails = []
try:
loop = asyncio.get_event_loop()
def fetch_pop3():
# Connect
if self.account.protocol == MailProtocol.POP3_SSL:
@@ -173,37 +172,39 @@ class MailProcessor:
self.account.host,
self.account.port,
context=context,
timeout=30
timeout=30,
)
else:
pop_conn = poplib.POP3(
self.account.host,
self.account.port,
timeout=30
self.account.host, self.account.port, timeout=30
)
# Authenticate
pop_conn.user(self.account.username)
pop_conn.pass_(self.password)
# Get message count
num_messages = len(pop_conn.list()[1])
logger.info(f"Found {num_messages} messages for account {self.account.id}")
logger.info(
f"Found {num_messages} messages for account {self.account.id}"
)
fetched_emails = []
messages_to_delete = []
# Fetch emails (limited by max_count)
for i in range(1, min(num_messages + 1, max_count + 1)):
try:
response, lines, octets = pop_conn.retr(i)
email_data = b'\r\n'.join(lines)
email_data = b"\r\n".join(lines)
fetched_emails.append(email_data)
messages_to_delete.append(i)
logger.info(f"Retrieved message {i} from account {self.account.id}")
logger.info(
f"Retrieved message {i} from account {self.account.id}"
)
except Exception as e:
logger.error(f"Error retrieving message {i}: {e}")
# Delete messages if configured
if self.account.delete_after_forward:
for msg_id in messages_to_delete:
@@ -211,100 +212,98 @@ class MailProcessor:
pop_conn.dele(msg_id)
except Exception as e:
logger.error(f"Error deleting message {msg_id}: {e}")
pop_conn.quit()
return fetched_emails
emails = await loop.run_in_executor(None, fetch_pop3)
except Exception as e:
logger.error(f"Error fetching POP3 emails: {e}")
raise MailFetchError(f"POP3 fetch error: {str(e)}")
return emails
async def _fetch_imap_emails(self, max_count: int) -> List[bytes]:
"""Fetch emails via IMAP"""
emails = []
try:
# Create IMAP client
if self.account.protocol == MailProtocol.IMAP_SSL:
imap_client = aioimaplib.IMAP4_SSL(
host=self.account.host,
port=self.account.port,
timeout=30
host=self.account.host, port=self.account.port, timeout=30
)
else:
imap_client = aioimaplib.IMAP4(
host=self.account.host,
port=self.account.port,
timeout=30
host=self.account.host, port=self.account.port, timeout=30
)
await imap_client.wait_hello_from_server()
await imap_client.login(self.account.username, self.password)
await imap_client.select('INBOX')
await imap_client.select("INBOX")
# Search for all messages
response = await imap_client.search('UNSEEN') # Only fetch unread
response = await imap_client.search("UNSEEN") # Only fetch unread
message_ids = response.lines[0].split()
# Limit to max_count
message_ids = message_ids[:max_count]
logger.info(f"Found {len(message_ids)} unread messages for account {self.account.id}")
logger.info(
f"Found {len(message_ids)} unread messages for account {self.account.id}"
)
# Fetch each message
for msg_id in message_ids:
try:
response = await imap_client.fetch(msg_id, '(RFC822)')
response = await imap_client.fetch(msg_id, "(RFC822)")
# Extract email data from response
email_data = None
for line in response.lines:
if isinstance(line, bytes) and b'RFC822' in line:
if isinstance(line, bytes) and b"RFC822" in line:
# Find the email content
start_idx = line.find(b'{')
start_idx = line.find(b"{")
if start_idx != -1:
# Email data is in the next parts
continue
elif isinstance(line, bytes) and not line.startswith(b'*'):
elif isinstance(line, bytes) and not line.startswith(b"*"):
email_data = line
break
if email_data:
emails.append(email_data)
# Mark as seen if deleting after forward
if self.account.delete_after_forward:
await imap_client.store(msg_id, '+FLAGS', '\\Deleted')
await imap_client.store(msg_id, "+FLAGS", "\\Deleted")
except Exception as e:
logger.error(f"Error fetching message {msg_id}: {e}")
# Expunge deleted messages
if self.account.delete_after_forward:
await imap_client.expunge()
await imap_client.logout()
except Exception as e:
logger.error(f"Error fetching IMAP emails: {e}")
raise MailFetchError(f"IMAP fetch error: {str(e)}")
return emails
@staticmethod
async def forward_email(
email_data: bytes,
source_account_name: str,
destination: str,
smtp_config: Dict[str, Any]
smtp_config: Dict[str, Any],
) -> bool:
"""
Forward an email to the destination address.
Args:
email_data: Raw email bytes
source_account_name: Name of source account for labeling
@@ -315,60 +314,68 @@ class MailProcessor:
- username: SMTP username
- password: SMTP password
- use_tls: Whether to use STARTTLS
Returns:
True if successful, False otherwise
"""
try:
loop = asyncio.get_event_loop()
def send_email():
# Parse the email
msg = parser.BytesParser().parsebytes(email_data)
# Create forwarding message
forward_msg = MIMEMultipart('mixed')
forward_msg['From'] = smtp_config['username']
forward_msg['To'] = destination
forward_msg['Date'] = formatdate(localtime=True)
forward_msg['Message-ID'] = make_msgid()
forward_msg = MIMEMultipart("mixed")
forward_msg["From"] = smtp_config["username"]
forward_msg["To"] = destination
forward_msg["Date"] = formatdate(localtime=True)
forward_msg["Message-ID"] = make_msgid()
# Preserve original subject with prefix
original_subject = msg.get('Subject', 'No Subject')
forward_msg['Subject'] = f"[Fwd from {source_account_name}] {original_subject}"
original_subject = msg.get("Subject", "No Subject")
forward_msg["Subject"] = (
f"[Fwd from {source_account_name}] {original_subject}"
)
# Add original headers
header_info = f"Originally from: {msg.get('From', 'Unknown')}\n"
header_info += f"Original Date: {msg.get('Date', 'Unknown')}\n"
header_info += f"Original Subject: {original_subject}\n"
header_info += f"Source Account: {source_account_name}\n"
header_info += "-" * 50 + "\n\n"
# Get email body
body = ""
if msg.is_multipart():
for part in msg.walk():
if part.get_content_type() == "text/plain":
body = part.get_payload(decode=True).decode('utf-8', errors='ignore')
body = part.get_payload(decode=True).decode(
"utf-8", errors="ignore"
)
break
else:
payload = msg.get_payload(decode=True)
if payload:
body = payload.decode('utf-8', errors='ignore')
body = payload.decode("utf-8", errors="ignore")
# Combine header and body
full_body = header_info + body
forward_msg.attach(MIMEText(full_body, 'plain', 'utf-8'))
forward_msg.attach(MIMEText(full_body, "plain", "utf-8"))
# Send via SMTP
if smtp_config.get('use_tls', True):
server = smtplib.SMTP(smtp_config['host'], smtp_config['port'], timeout=30)
if smtp_config.get("use_tls", True):
server = smtplib.SMTP(
smtp_config["host"], smtp_config["port"], timeout=30
)
server.starttls()
else:
server = smtplib.SMTP_SSL(smtp_config['host'], smtp_config['port'], timeout=30)
server = smtplib.SMTP_SSL(
smtp_config["host"], smtp_config["port"], timeout=30
)
try:
server.login(smtp_config['username'], smtp_config['password'])
server.login(smtp_config["username"], smtp_config["password"])
server.send_message(forward_msg)
logger.info(f"Successfully forwarded email to {destination}")
return True
@@ -377,9 +384,9 @@ class MailProcessor:
server.quit()
except Exception as e:
logger.warning(f"Error closing SMTP connection: {e}")
return await loop.run_in_executor(None, send_email)
except Exception as e:
logger.error(f"Error forwarding email: {e}")
raise MailForwardError(f"Forward error: {str(e)}")
@@ -387,7 +394,7 @@ class MailProcessor:
class MailServerAutoDetect:
"""Auto-detect mail server settings based on email domain"""
# Common mail server configurations
KNOWN_PROVIDERS = {
"gmail.com": {
@@ -536,77 +543,83 @@ class MailServerAutoDetect:
"imap_ssl": {"host": "imap.mail.de", "port": 993},
},
}
@classmethod
def detect(cls, email_address: str) -> List[Dict[str, Any]]:
"""
Detect mail server settings for an email address.
Returns list of possible configurations.
"""
domain = email_address.split('@')[-1].lower()
domain = email_address.split("@")[-1].lower()
suggestions = []
# Check if we have a known provider
if domain in cls.KNOWN_PROVIDERS:
provider = cls.KNOWN_PROVIDERS[domain]
# Add POP3 SSL suggestion
if "pop3_ssl" in provider:
suggestions.append({
"protocol": "pop3_ssl",
"provider_name": provider["name"],
"host": provider["pop3_ssl"]["host"],
"port": provider["pop3_ssl"]["port"],
"use_ssl": True,
"use_tls": False,
})
suggestions.append(
{
"protocol": "pop3_ssl",
"provider_name": provider["name"],
"host": provider["pop3_ssl"]["host"],
"port": provider["pop3_ssl"]["port"],
"use_ssl": True,
"use_tls": False,
}
)
# Add IMAP SSL suggestion
if "imap_ssl" in provider:
suggestions.append({
"protocol": "imap_ssl",
"provider_name": provider["name"],
"host": provider["imap_ssl"]["host"],
"port": provider["imap_ssl"]["port"],
"use_ssl": True,
"use_tls": False,
})
suggestions.append(
{
"protocol": "imap_ssl",
"provider_name": provider["name"],
"host": provider["imap_ssl"]["host"],
"port": provider["imap_ssl"]["port"],
"use_ssl": True,
"use_tls": False,
}
)
else:
# Generic suggestions based on common patterns
suggestions.extend([
{
"protocol": "pop3_ssl",
"provider_name": "Generic",
"host": f"pop.{domain}",
"port": 995,
"use_ssl": True,
"use_tls": False,
},
{
"protocol": "pop3_ssl",
"provider_name": "Generic",
"host": f"pop3.{domain}",
"port": 995,
"use_ssl": True,
"use_tls": False,
},
{
"protocol": "imap_ssl",
"provider_name": "Generic",
"host": f"imap.{domain}",
"port": 993,
"use_ssl": True,
"use_tls": False,
},
{
"protocol": "imap_ssl",
"provider_name": "Generic",
"host": f"mail.{domain}",
"port": 993,
"use_ssl": True,
"use_tls": False,
},
])
suggestions.extend(
[
{
"protocol": "pop3_ssl",
"provider_name": "Generic",
"host": f"pop.{domain}",
"port": 995,
"use_ssl": True,
"use_tls": False,
},
{
"protocol": "pop3_ssl",
"provider_name": "Generic",
"host": f"pop3.{domain}",
"port": 995,
"use_ssl": True,
"use_tls": False,
},
{
"protocol": "imap_ssl",
"provider_name": "Generic",
"host": f"imap.{domain}",
"port": 993,
"use_ssl": True,
"use_tls": False,
},
{
"protocol": "imap_ssl",
"provider_name": "Generic",
"host": f"mail.{domain}",
"port": 993,
"use_ssl": True,
"use_tls": False,
},
]
)
return suggestions