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-rw-r--r--synapse/push/mailer.py123
1 files changed, 83 insertions, 40 deletions
diff --git a/synapse/push/mailer.py b/synapse/push/mailer.py
index 38195c8eea..9ff092e8bb 100644
--- a/synapse/push/mailer.py
+++ b/synapse/push/mailer.py
@@ -19,7 +19,7 @@ import logging
 import urllib.parse
 from email.mime.multipart import MIMEMultipart
 from email.mime.text import MIMEText
-from typing import Iterable, List, TypeVar
+from typing import TYPE_CHECKING, Any, Dict, Iterable, List, Optional, TypeVar
 
 import bleach
 import jinja2
@@ -27,16 +27,20 @@ import jinja2
 from synapse.api.constants import EventTypes, Membership
 from synapse.api.errors import StoreError
 from synapse.config.emailconfig import EmailSubjectConfig
+from synapse.events import EventBase
 from synapse.logging.context import make_deferred_yieldable
 from synapse.push.presentable_names import (
     calculate_room_name,
     descriptor_from_member_events,
     name_from_member_event,
 )
-from synapse.types import UserID
+from synapse.types import StateMap, UserID
 from synapse.util.async_helpers import concurrently_execute
 from synapse.visibility import filter_events_for_client
 
+if TYPE_CHECKING:
+    from synapse.app.homeserver import HomeServer
+
 logger = logging.getLogger(__name__)
 
 T = TypeVar("T")
@@ -93,7 +97,13 @@ ALLOWED_ATTRS = {
 
 
 class Mailer:
-    def __init__(self, hs, app_name, template_html, template_text):
+    def __init__(
+        self,
+        hs: "HomeServer",
+        app_name: str,
+        template_html: jinja2.Template,
+        template_text: jinja2.Template,
+    ):
         self.hs = hs
         self.template_html = template_html
         self.template_text = template_text
@@ -108,17 +118,19 @@ class Mailer:
 
         logger.info("Created Mailer for app_name %s" % app_name)
 
-    async def send_password_reset_mail(self, email_address, token, client_secret, sid):
+    async def send_password_reset_mail(
+        self, email_address: str, token: str, client_secret: str, sid: str
+    ) -> None:
         """Send an email with a password reset link to a user
 
         Args:
-            email_address (str): Email address we're sending the password
+            email_address: Email address we're sending the password
                 reset to
-            token (str): Unique token generated by the server to verify
+            token: Unique token generated by the server to verify
                 the email was received
-            client_secret (str): Unique token generated by the client to
+            client_secret: Unique token generated by the client to
                 group together multiple email sending attempts
-            sid (str): The generated session ID
+            sid: The generated session ID
         """
         params = {"token": token, "client_secret": client_secret, "sid": sid}
         link = (
@@ -136,17 +148,19 @@ class Mailer:
             template_vars,
         )
 
-    async def send_registration_mail(self, email_address, token, client_secret, sid):
+    async def send_registration_mail(
+        self, email_address: str, token: str, client_secret: str, sid: str
+    ) -> None:
         """Send an email with a registration confirmation link to a user
 
         Args:
-            email_address (str): Email address we're sending the registration
+            email_address: Email address we're sending the registration
                 link to
-            token (str): Unique token generated by the server to verify
+            token: Unique token generated by the server to verify
                 the email was received
-            client_secret (str): Unique token generated by the client to
+            client_secret: Unique token generated by the client to
                 group together multiple email sending attempts
-            sid (str): The generated session ID
+            sid: The generated session ID
         """
         params = {"token": token, "client_secret": client_secret, "sid": sid}
         link = (
@@ -164,18 +178,20 @@ class Mailer:
             template_vars,
         )
 
-    async def send_add_threepid_mail(self, email_address, token, client_secret, sid):
+    async def send_add_threepid_mail(
+        self, email_address: str, token: str, client_secret: str, sid: str
+    ) -> None:
         """Send an email with a validation link to a user for adding a 3pid to their account
 
         Args:
-            email_address (str): Email address we're sending the validation link to
+            email_address: Email address we're sending the validation link to
 
-            token (str): Unique token generated by the server to verify the email was received
+            token: Unique token generated by the server to verify the email was received
 
-            client_secret (str): Unique token generated by the client to group together
+            client_secret: Unique token generated by the client to group together
                 multiple email sending attempts
 
-            sid (str): The generated session ID
+            sid: The generated session ID
         """
         params = {"token": token, "client_secret": client_secret, "sid": sid}
         link = (
@@ -194,8 +210,13 @@ class Mailer:
         )
 
     async def send_notification_mail(
-        self, app_id, user_id, email_address, push_actions, reason
-    ):
+        self,
+        app_id: str,
+        user_id: str,
+        email_address: str,
+        push_actions: Iterable[Dict[str, Any]],
+        reason: Dict[str, Any],
+    ) -> None:
         """Send email regarding a user's room notifications"""
         rooms_in_order = deduped_ordered_list([pa["room_id"] for pa in push_actions])
 
@@ -203,7 +224,7 @@ class Mailer:
             [pa["event_id"] for pa in push_actions]
         )
 
-        notifs_by_room = {}
+        notifs_by_room = {}  # type: Dict[str, List[Dict[str, Any]]]
         for pa in push_actions:
             notifs_by_room.setdefault(pa["room_id"], []).append(pa)
 
@@ -262,7 +283,9 @@ class Mailer:
 
         await self.send_email(email_address, summary_text, template_vars)
 
-    async def send_email(self, email_address, subject, extra_template_vars):
+    async def send_email(
+        self, email_address: str, subject: str, extra_template_vars: Dict[str, Any]
+    ) -> None:
         """Send an email with the given information and template text"""
         try:
             from_string = self.hs.config.email_notif_from % {"app": self.app_name}
@@ -315,8 +338,13 @@ class Mailer:
         )
 
     async def get_room_vars(
-        self, room_id, user_id, notifs, notif_events, room_state_ids
-    ):
+        self,
+        room_id: str,
+        user_id: str,
+        notifs: Iterable[Dict[str, Any]],
+        notif_events: Dict[str, EventBase],
+        room_state_ids: StateMap[str],
+    ) -> Dict[str, Any]:
         # Check if one of the notifs is an invite event for the user.
         is_invite = False
         for n in notifs:
@@ -334,7 +362,7 @@ class Mailer:
             "notifs": [],
             "invite": is_invite,
             "link": self.make_room_link(room_id),
-        }
+        }  # type: Dict[str, Any]
 
         if not is_invite:
             for n in notifs:
@@ -365,7 +393,13 @@ class Mailer:
 
         return room_vars
 
-    async def get_notif_vars(self, notif, user_id, notif_event, room_state_ids):
+    async def get_notif_vars(
+        self,
+        notif: Dict[str, Any],
+        user_id: str,
+        notif_event: EventBase,
+        room_state_ids: StateMap[str],
+    ) -> Dict[str, Any]:
         results = await self.store.get_events_around(
             notif["room_id"],
             notif["event_id"],
@@ -391,7 +425,9 @@ class Mailer:
 
         return ret
 
-    async def get_message_vars(self, notif, event, room_state_ids):
+    async def get_message_vars(
+        self, notif: Dict[str, Any], event: EventBase, room_state_ids: StateMap[str]
+    ) -> Optional[Dict[str, Any]]:
         if event.type != EventTypes.Message and event.type != EventTypes.Encrypted:
             return None
 
@@ -432,7 +468,9 @@ class Mailer:
 
         return ret
 
-    def add_text_message_vars(self, messagevars, event):
+    def add_text_message_vars(
+        self, messagevars: Dict[str, Any], event: EventBase
+    ) -> None:
         msgformat = event.content.get("format")
 
         messagevars["format"] = msgformat
@@ -445,15 +483,18 @@ class Mailer:
         elif body:
             messagevars["body_text_html"] = safe_text(body)
 
-        return messagevars
-
-    def add_image_message_vars(self, messagevars, event):
+    def add_image_message_vars(
+        self, messagevars: Dict[str, Any], event: EventBase
+    ) -> None:
         messagevars["image_url"] = event.content["url"]
 
-        return messagevars
-
     async def make_summary_text(
-        self, notifs_by_room, room_state_ids, notif_events, user_id, reason
+        self,
+        notifs_by_room: Dict[str, List[Dict[str, Any]]],
+        room_state_ids: Dict[str, StateMap[str]],
+        notif_events: Dict[str, EventBase],
+        user_id: str,
+        reason: Dict[str, Any],
     ):
         if len(notifs_by_room) == 1:
             # Only one room has new stuff
@@ -580,7 +621,7 @@ class Mailer:
                     "app": self.app_name,
                 }
 
-    def make_room_link(self, room_id):
+    def make_room_link(self, room_id: str) -> str:
         if self.hs.config.email_riot_base_url:
             base_url = "%s/#/room" % (self.hs.config.email_riot_base_url)
         elif self.app_name == "Vector":
@@ -590,7 +631,7 @@ class Mailer:
             base_url = "https://matrix.to/#"
         return "%s/%s" % (base_url, room_id)
 
-    def make_notif_link(self, notif):
+    def make_notif_link(self, notif: Dict[str, str]) -> str:
         if self.hs.config.email_riot_base_url:
             return "%s/#/room/%s/%s" % (
                 self.hs.config.email_riot_base_url,
@@ -606,7 +647,9 @@ class Mailer:
         else:
             return "https://matrix.to/#/%s/%s" % (notif["room_id"], notif["event_id"])
 
-    def make_unsubscribe_link(self, user_id, app_id, email_address):
+    def make_unsubscribe_link(
+        self, user_id: str, app_id: str, email_address: str
+    ) -> str:
         params = {
             "access_token": self.macaroon_gen.generate_delete_pusher_token(user_id),
             "app_id": app_id,
@@ -620,7 +663,7 @@ class Mailer:
         )
 
 
-def safe_markup(raw_html):
+def safe_markup(raw_html: str) -> jinja2.Markup:
     return jinja2.Markup(
         bleach.linkify(
             bleach.clean(
@@ -635,7 +678,7 @@ def safe_markup(raw_html):
     )
 
 
-def safe_text(raw_text):
+def safe_text(raw_text: str) -> jinja2.Markup:
     """
     Process text: treat it as HTML but escape any tags (ie. just escape the
     HTML) then linkify it.
@@ -655,7 +698,7 @@ def deduped_ordered_list(it: Iterable[T]) -> List[T]:
     return ret
 
 
-def string_ordinal_total(s):
+def string_ordinal_total(s: str) -> int:
     tot = 0
     for c in s:
         tot += ord(c)