Initial old messages backfill functionality.

weechat-matrix.py

@@ -13,6 +13,7 @@ import re
 from builtins import bytes
 
 from collections import deque, Mapping, Iterable, namedtuple
+from operator import itemgetter
 from enum import Enum, unique
 from functools import wraps
 
@@ -117,6 +118,7 @@ class MessageType(Enum):
     SEND     = 2
     STATE    = 3
     REDACT   = 4
+    ROOM_MSG = 5
 
 
 @unique
@@ -264,7 +266,7 @@ class MatrixMessage:
             # TODO the limit should be configurable matrix.network.sync_limit
             sync_filter = {
                 "room": {
-                    "timeline": {"limit": 1000}
+                    "timeline": {"limit": 10}
                 }
             }
 
@@ -334,6 +336,22 @@ class MatrixMessage:
                 data
             )
 
+        elif message_type == MessageType.ROOM_MSG:
+            path = ("{api}/rooms/{room}/messages?from={prev_batch}&"
+                    "dir=b&limit={message_limit}&"
+                    "access_token={access_token}").format(
+                        api=MATRIX_API_PATH,
+                        room=room_id,
+                        prev_batch=extra_id,
+                        message_limit=10,
+                        access_token=server.access_token)
+            self.request = HttpRequest(
+                RequestType.GET,
+                server.address,
+                server.port,
+                path,
+            )
+
 
 class MatrixRoom:
     def __init__(self, room_id):
@@ -343,6 +361,7 @@ class MatrixRoom:
         self.topic        = ""         # type: unicode
         self.topic_author = ""         # type: unicode
         self.topic_date   = None       # type: datetime.datetime
+        self.prev_batch   = ""         # type: unicode
 
 
 def key_from_value(dictionary, value):
@@ -619,8 +638,9 @@ def date_from_age(age):
     return date
 
 
-def matrix_handle_room_text_message(server, room_id, event):
+def matrix_handle_room_text_message(server, room_id, event, old=False):
-    # type: (MatrixServer, unicode, Dict[unicode, Any]) -> None
+    # type: (MatrixServer, unicode, Dict[unicode, Any], bool) -> None
+    tag = ""
     msg = event['content']['body']
 
     msg_author = strip_matrix_server(event['sender'])[1:]
@@ -632,8 +652,16 @@ def matrix_handle_room_text_message(server, room_id, event):
     msg_date = date_from_age(event['unsigned']['age'])
 
     # TODO if this is an initial sync tag the messages as backlog
-    tag = "nick_{a},matrix_id_{event_id},matrix_message,notify_message".format(
+    if old:
-        a=msg_author, event_id=event_id)
+        tag = ("nick_{a},matrix_id_{event_id},"
+               "matrix_message,notify_message,no_log,no_highlight").format(
+                   a=msg_author,
+                   event_id=event_id)
+    else:
+        tag = ("nick_{a},matrix_id_{event_id},"
+               "matrix_message,notify_message,log1").format(
+                   a=msg_author,
+                   event_id=event_id)
 
     buf = server.buffers[room_id]
     W.prnt_date_tags(buf, msg_date, tag, data)
@@ -673,15 +701,15 @@ def matrix_handle_redacted_message(server, room_id, event):
     W.prnt_date_tags(buf, msg_date, tag, data)
 
 
-def matrix_handle_room_messages(server, room_id, event):
+def matrix_handle_room_messages(server, room_id, event, old=False):
-    # type: (MatrixServer, unicode, Dict[unicode, Any]) -> None
+    # type: (MatrixServer, unicode, Dict[unicode, Any], bool) -> None
     if event['type'] == 'm.room.message':
         if 'redacted_by' in event['unsigned']:
             matrix_handle_redacted_message(server, room_id, event)
             return
 
         if event['content']['msgtype'] == 'm.text':
-            matrix_handle_room_text_message(server, room_id, event)
+            matrix_handle_room_text_message(server, room_id, event, old)
 
         # TODO handle different content types here
         else:
@@ -734,7 +762,7 @@ def matrix_handle_room_events(server, room_id, room_events):
                            topic=topic)
 
             tags = "matrix_topic,log3"
-            date = int(time.time())
+            date = date_from_age(topic_age)
 
             W.prnt_date_tags(buf, date, tags, message)
 
@@ -742,7 +770,7 @@ def matrix_handle_room_events(server, room_id, room_events):
             pass
 
         else:
-            message = ("{prefix}Handling of message type "
+            message = ("{prefix}Handling of room event type "
                        "{type} not implemented").format(
                            type=event['type'],
                            prefix=W.prefix("error"))
@@ -758,10 +786,98 @@ def matrix_handle_room_info(server, room_info):
         if room_id not in server.buffers:
             matrix_create_room_buffer(server, room_id)
 
+        if not server.rooms[room_id].prev_batch:
+            server.rooms[room_id].prev_batch = room['timeline']['prev_batch']
+
         matrix_handle_room_events(server, room_id, room['state']['events'])
         matrix_handle_room_events(server, room_id, room['timeline']['events'])
 
 
+def matrix_sort_old_messages(server, room_id):
+    lines = []
+    buf = server.buffers[room_id]
+
+    own_lines = W.hdata_pointer(W.hdata_get('buffer'), buf, 'own_lines')
+
+    if own_lines:
+        hdata_line = W.hdata_get('line')
+        hdata_line_data = W.hdata_get('line_data')
+        line = W.hdata_pointer(
+            W.hdata_get('lines'),
+            own_lines,
+            'first_line'
+        )
+
+        while line:
+            data = W.hdata_pointer(hdata_line, line, 'data')
+
+            line_data = {}
+
+            if data:
+                date = W.hdata_time(hdata_line_data, data, 'date')
+                print_date = W.hdata_time(hdata_line_data, data,
+                                          'date_printed')
+                tags = tags_from_line_data(data)
+                prefix = W.hdata_string(hdata_line_data, data, 'prefix')
+                message = W.hdata_string(hdata_line_data, data,
+                                         'message')
+
+                line_data = {'date': date,
+                             'date_printed': print_date,
+                             'tags_array': ','.join(tags),
+                             'prefix': prefix,
+                             'message': message}
+
+                lines.append(line_data)
+
+            line = W.hdata_move(hdata_line, line, 1)
+
+        sorted_lines = sorted(lines, key=itemgetter('date'))
+        lines = []
+
+        # We need to convert the dates to a string for hdata_update(), this
+        # will reverse the list at the same time
+        while sorted_lines:
+            line = sorted_lines.pop()
+            new_line = {k: unicode(v) for k, v in line.items()}
+            lines.append(new_line)
+
+        matrix_update_buffer_lines(lines, own_lines)
+
+
+def matrix_update_buffer_lines(new_lines, own_lines):
+    hdata_line = W.hdata_get('line')
+    hdata_line_data = W.hdata_get('line_data')
+
+    line = W.hdata_pointer(
+        W.hdata_get('lines'),
+        own_lines,
+        'first_line'
+    )
+
+    while line:
+        data = W.hdata_pointer(hdata_line, line, 'data')
+
+        if data:
+            W.hdata_update(hdata_line_data, data, new_lines.pop())
+
+        line = W.hdata_move(hdata_line, line, 1)
+
+
+def matrix_handle_old_messages(server, room_id, events):
+    for event in events:
+        if event['type'] == 'm.room.message':
+            matrix_handle_room_messages(server, room_id, event, old=True)
+        # TODO do we wan't to handle topics joins/quits here?
+        else:
+            pass
+
+    matrix_sort_old_messages(server, room_id)
+
+    # matrix_handle_room_events(server, room_id, events)
+    # TODO sort messages
+
+
 def matrix_handle_message(
         server,        # type: MatrixServer
         message_type,  # type: MessageType
@@ -806,6 +922,19 @@ def matrix_handle_message(
         buf = server.buffers[room_id]
         W.prnt_date_tags(buf, date, tag, data)
 
+    elif message_type == MessageType.ROOM_MSG:
+        # Response has no messages, that is we already got the oldest message
+        # in a previous request, nothing to do
+        if not response['chunk']:
+            return
+
+        room_id = response['chunk'][0]['room_id']
+        room = server.rooms[room_id]
+
+        matrix_handle_old_messages(server, room_id, response['chunk'])
+
+        room.prev_batch = response['end']
+
     # Nothing to do here, we'll handle state changes and redactions in the sync
     elif (message_type == MessageType.STATE or
           message_type == MessageType.REDACT):
@@ -1897,13 +2026,46 @@ def matrix_command_topic_cb(data, buffer, command):
     return W.WEECHAT_RC_OK
 
 
+def matrix_fetch_old_messages(server, room_id):
+    room = server.rooms[room_id]
+    prev_batch = room.prev_batch
+
+    if not prev_batch:
+        return
+
+    message = MatrixMessage(server, MessageType.ROOM_MSG,
+                            room_id=room_id, extra_id=prev_batch)
+
+    send_or_queue(server, message)
+
+    return
+
+
+@utf8_decode
+def matrix_command_pgup_cb(data, buffer, command):
+    for server in SERVERS.values():
+        if buffer in server.buffers.values():
+            window = W.window_search_with_buffer(buffer)
+
+            first_line_displayed = bool(
+                W.window_get_integer(window, "first_line_displayed")
+            )
+
+            if first_line_displayed:
+                room_id = key_from_value(server.buffers, buffer)
+                matrix_fetch_old_messages(server, room_id)
+
+            return W.WEECHAT_RC_OK
+
+    return W.WEECHAT_RC_OK
+
+
 def tags_from_line_data(line_data, ):
     # type: (weechat.hdata) -> List[unicode]
     tags_count = W.hdata_get_var_array_size(
         W.hdata_get('line_data'),
         line_data,
-                    'tags_array'
+        'tags_array')
-                )
 
     tags = [
         W.hdata_string(
@@ -2143,6 +2305,7 @@ def init_hooks():
         'matrix_redact_command_cb', '')
 
     W.hook_command_run('/topic', 'matrix_command_topic_cb', '')
+    W.hook_command_run('/window page_up', 'matrix_command_pgup_cb', '')
 
 
 def autoconnect(servers):