download gpx file attachments

main.py

@@ -1,6 +1,8 @@
 import configparser
 from imaplib import IMAP4
 import ssl
+import email
+import os
 
 from sqlalchemy import create_engine
 
@@ -11,6 +13,7 @@ config.read('config.ini')
 db = create_engine(f"postgresql://{config['db']['username']}:{config['db']['password']}@{config['db']['host']}/{config['db']['database']}").connect()
 
 mail = IMAP4(host=config['mail']['host'])
+fitotrack_msg_filter = '(OR SUBJECT "fitotrack" SUBJECT "Fitotrack" SUBJECT "FITOTRACK")'
 
 
 def init_database():
@@ -19,9 +22,29 @@ def init_database():
 
 
 def get_gpx_files_from_mail():
+    try:
+        os.mkdir('gpx_files')
+    except FileExistsError:
+        pass
     mail.starttls(ssl.create_default_context())
     mail.login(config['mail']['username'], config['mail']['password'])
 
+    mail.create(config['mail']['mailbox_dir'])
+    mail.select()
+    (resp, ids) = mail.search(None, fitotrack_msg_filter)
+    ids = ids[0].split()
+    for i in ids:
+        resp, fetched = mail.fetch(i, '(RFC822)')
+        email_message = email.message_from_bytes(fetched[0][1])
+        for part in email_message.walk():
+            if part.get_content_maintype() == 'multipart' or part.get_content_disposition() is None:
+                continue
+            filename = part.get_filename()
+
+            if filename:
+                with open(os.path.join('gpx_files', filename), 'wb') as f:
+                    f.write(part.get_payload(decode=True))
+    
     mail.logout()