from markdownify import markdownify
import imaplib
import email
from email.header import decode_header
import os
import re

username = ""
password = ""
imapserver = ""
N = 500

if not os.path.isdir('notes'):
    os.mkdir('notes')

imap = imaplib.IMAP4_SSL(imapserver)
imap.login(username, password)

status, messages = imap.select("Notes", True)

messages = int(messages[0])

for i in range(messages, max(0, messages-N), -1):
    res, msg = imap.fetch(str(i), "(RFC822)")
    for response in msg:
        if isinstance(response, tuple):
            msg = email.message_from_bytes(response[1])
            subject, encoding = decode_header(msg["Subject"])[0]
            if isinstance(subject, bytes):
                subject = subject.decode(encoding)

            From, encoding = decode_header(msg.get("From"))[0]
            if isinstance(From, bytes):
                From = From.decode(encoding)

            print(str(i) + ' - ' + subject)
            filepath = subject + '.md'
            filepath = os.path.join('notes', filepath)

            if msg.is_multipart():
                for part in msg.walk():
                    content_type = part.get_content_type()
                    content_disposition = str(part.get("Content-Disposition"))
                    try:
                        body = part.get_payload(decode=True).decode()
                    except:
                        pass

                    if content_type == "text/plain" and "attachment" not in content_disposition:
                         open(filepath, "wb").write(body.replace('\r\n', '\n').encode('utf8'))
                    elif "attachment" in content_disposition:
                        print('/!\\ attachment')
            else:
                content_type = msg.get_content_type()
                body = msg.get_payload(decode=True).decode()
                if content_type == "text/plain":
                    open(filepath, "wb").write(body.replace('\r\n', '\n').encode('utf8'))

            if content_type == "text/html":
                print('>> html')
                md = markdownify(body)
                if md[:4] == 'html':
                    md = md[4:]
                # fastmail specific: replace internal links
                md = re.sub(r'\[(.*)\]\(https://app.fastmail.com.*\)', '[[\\1]]', md)
                open(filepath, "wb").write(md.replace('\r\n', '\n').encode('utf8'))

imap.close()
imap.logout()