Add get_history.py

pyrogram/client/methods/messages/get_history.py

@@ -0,0 +1,72 @@
+# Pyrogram - Telegram MTProto API Client Library for Python
+# Copyright (C) 2017-2018 Dan Tès <https://github.com/delivrance>
+#
+# This file is part of Pyrogram.
+#
+# Pyrogram is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published
+# by the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Pyrogram is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
+
+from pyrogram.api import functions, types
+from ...ext import BaseClient, utils
+
+
+class GetHistory(BaseClient):
+    def get_history(self,
+                    chat_id: int or str,
+                    offset: int,
+                    limit: int,
+                    offset_id: int = 0,
+                    offset_date: int = 0,
+                    max_id: int = 0,
+                    min_id: int = 0):
+        # TODO: Documentation
+
+        r = self.send(
+            functions.messages.GetHistory(
+                peer=self.resolve_peer(chat_id),
+                offset_id=offset_id,
+                offset_date=offset_date,
+                add_offset=offset,
+                limit=limit,
+                max_id=max_id,
+                min_id=min_id,
+                hash=0
+            )
+        )
+
+        users = {i.id: i for i in r.users}
+        chats = {i.id: i for i in r.chats}
+
+        messages = []
+
+        for i in r.messages:
+            if isinstance(i, types.Message):
+                messages.append(
+                    utils.parse_message(
+                        self, i, users, chats
+                    )
+                )
+            elif isinstance(i, types.MessageService):
+                messages.append(
+                    utils.parse_message_service(
+                        self, i, users, chats
+                    )
+                )
+            else:
+                messages.append(
+                    utils.parse_message_empty(
+                        self, i
+                    )
+                )
+
+        return messages