From 77fc9ad2250bc5de1a28427aa0c2b2213b6fc75b Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Fri, 7 Apr 2017 19:12:33 +0300
Subject: Add import-imap subcommand

No tests, too hard to mock an IMAP server.
---
 distixlib/plugins/import_mail_plugin.py | 126 ++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)

diff --git a/distixlib/plugins/import_mail_plugin.py b/distixlib/plugins/import_mail_plugin.py
index 9e29503..f58c1b0 100644
--- a/distixlib/plugins/import_mail_plugin.py
+++ b/distixlib/plugins/import_mail_plugin.py
@@ -18,8 +18,10 @@
 
 import contextlib
 import email
+import imaplib
 import mailbox
 import os
+import re
 
 import cliapp
 import ttystatus
@@ -54,6 +56,27 @@ class ImportMailPlugin(cliapp.Plugin):
             'import-maildir', self.import_maildir,
             arg_synopsis='REPO MAILDIR')
 
+        self.app.add_subcommand(
+            'import-imap', self.import_imap,
+            arg_synopsis='[KEY=VALUE]')
+
+        self.app.settings.string(
+            ['imap-server'],
+            'which IMAP server to import from',
+            metavar='ADDR')
+
+        self.app.settings.string(
+            ['imap-username'],
+            'username on IMAP server')
+
+        self.app.settings.string(
+            ['imap-password-cmd'],
+            'shell command to run to get password on IMAP server')
+
+        self.app.settings.string(
+            ['local-repos'],
+            'where local repos should be when importing from IMAP')
+
     def import_mail(self, args):
         repo_dirname, mail_filename, keyvalue = self._parse_command_line(args)
         key, value = self._parse_keyvalue(keyvalue)
@@ -76,6 +99,58 @@ class ImportMailPlugin(cliapp.Plugin):
             return mailbox.Maildir(filename, factory=None)
         self._import_folder(args, maildir_factory)
 
+    def import_imap(self, args):
+        if args:
+            key, value = self._parse_keyvalue(args[0])
+        else:
+            key, value = None, None
+
+        collection = _RepoCollection(self.app.settings['local-repos'])
+
+        imap_server = self.app.settings['imap-server']
+        username = self.app.settings['imap-username']
+        password_cmd = self.app.settings['imap-password-cmd']
+        password = cliapp.runcmd(['sh', '-c', password_cmd]).strip()
+
+        cp = self.app.settings.as_cp()
+        repo_rules = _RepoRules()
+        repo_rules.add_rules(cp)
+
+        imap = imaplib.IMAP4_SSL(imap_server)
+        imap.login(username, password)
+        imap.select('INBOX')
+
+        _, data = imap.search(None, 'ALL')
+        for msgnum in data[0].split():
+            _, data = imap.fetch(msgnum, '(RFC822)')
+            _, text = data[0]
+            repo_url = repo_rules.find_url(text)
+            if repo_url:
+                msg = email.message_from_string(text)
+                self._import_msg_into_repo(
+                    collection, repo_url, msg, key, value)
+                imap.store(msgnum, '+FLAGS', '(\\Deleted)')
+
+        imap.expunge()
+        imap.close()
+        imap.logout()
+
+    def _import_msg_into_repo(self, collection, repo_url, msg, key, value):
+        if collection.is_local(repo_url):
+            collection.pull(repo_url)
+        else:
+            collection.clone(repo_url)
+        localdir = collection.localdir(repo_url)
+
+        context = _ImportContext()
+        context.set_repo(distixlib.Repository(localdir))
+        context.repo.require_clean_working_tree()
+        context.all_ticket_ids = context.store.get_ticket_ids()
+
+        filenames = self._import_msg_to_ticket_store(context, msg, key, value)
+        if filenames:
+            context.repo.commit_changes(filenames, self.commit_msg)
+
     def _import_folder(self, args, folder_factory):
         repo_dirname, folder_filename, keyvalue = self._parse_command_line(
             args)
@@ -276,3 +351,54 @@ class _QuietProgressReporter(object):
 
     def __exit__(self, *args):
         pass
+
+
+class _RepoCollection(object):
+
+    def __init__(self, locals_dir):
+        self._locals_dir = locals_dir
+
+    def is_local(self, repo_url):
+        localdir = self.localdir(repo_url)
+        return os.path.exists(localdir)
+
+    def clone(self, repo_url):
+        localdir = self.localdir(repo_url)
+        cliapp.runcmd(['git', 'clone', repo_url, localdir])
+        cliapp.runcmd(
+            ['git', 'branch', '-u', 'origin', 'master'],
+            cwd=localdir)
+
+    def pull(self, repo_url):
+        localdir = self.localdir(repo_url)
+        cliapp.runcmd(['git', 'pull', '--rebase'], cwd=localdir)
+
+    def localdir(self, url):
+        dirname = self._dir_for_url(url)
+        return os.path.join(self._locals_dir, dirname)
+
+    def _dir_for_url(self, repo_url):
+        s = repo_url
+        s = '_'.join(s.split('/'))
+        return s
+
+
+class _RepoRules(object):
+
+    def __init__(self):
+        self._rules = []
+
+    def add_rules(self, cp):
+        for section in cp.sections():
+            if section.startswith('distix:'):
+                url = section[len('distix:'):].strip()
+                pattern = cp.get(section, 'pattern')
+                self._rules.append((url, pattern))
+
+    def find_url(self, msg_text):
+        msg_text = ''.join(msg_text.split('\r'))
+        for url, pattern in self._rules:
+            m = re.search(pattern, msg_text, re.M | re.I)
+            if m is not None:
+                return url
+        return None
-- 
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