From 8e2f7d36858f1ee021d78fe64627dbed782b4212 Mon Sep 17 00:00:00 2001
From: anebz <anebzt@protonmail.com>
Date: Thu, 4 Jun 2020 18:50:57 +0200
Subject: [PATCH] 7.7: chat server telegram example

---
 .../7.7. Chat server.md                       | 111 ++++++++++++++++++
 1 file changed, 111 insertions(+)

diff --git a/07. Object-Oriented design/7.7. Chat server.md b/07. Object-Oriented design/7.7. Chat server.md
index 4bfed06..160a03a 100644
--- a/07. Object-Oriented design/7.7. Chat server.md	
+++ b/07. Object-Oriented design/7.7. Chat server.md	
@@ -48,3 +48,114 @@ The key objects of the system are users, conversations and status messages.
 * How do we make the server scale?
   * Split the data across many servers, incresing the concern about out-of-sync data
 * How do we prevent DoS attacks?
+
+## Telegram export chat json file
+
+Example `json` of how Telegram saves message data in a `personal chat`.
+
+```json
+{
+    "name": "name",
+    "type": "personal_chat",
+    "id": 123456,
+    "messages": [
+        {   // text message
+           "id": 234,
+           "type": "message",
+           "date": "2020-01-29T11:41:46",
+           "edited": "1970-01-01T01:00:00",
+           "from": "Username",
+           "from_id": 123456,
+           "text": "..."
+        },
+        {   // sticker
+           "id": 432,
+           "type": "message",
+           "date": "2020-01-29T12:14:22",
+           "edited": "1970-01-01T01:00:00",
+           "from": "Username",
+           "from_id": 123456,
+           "file": "stickers/AnimatedSticker.tgs",
+           "thumbnail": "stickers/AnimatedSticker.tgs_thumb.jpg",
+           "media_type": "sticker",
+           "sticker_emoji": "😄",
+           "text": ""
+        },
+        {   // link in text message
+           "id": 436093,
+           "type": "message",
+           "date": "2020-01-30T17:03:34",
+           "edited": "1970-01-01T01:00:00",
+           "from": "ane",
+           "from_id": 222,
+           "text": [
+                {
+                 "type": "link",
+                 "text": "https://www.link.com"
+                }
+           ]
+        },
+        {   // photo message
+            "id": 436396,
+            "type": "message",
+            "date": "2020-02-02T15:56:06",
+            "edited": "1970-01-01T01:00:00",
+            "from": "Username",
+            "from_id": 123456,
+            "photo": "photos/photo.jpg",
+            "width": 648,
+            "height": 259,
+            "text": ""
+        },
+        {   // audio message
+            "id": 36057,
+            "type": "message",
+            "date": "2016-04-05T13:26:02",
+            "edited": "1970-01-01T01:00:00",
+            "from": "Username",
+            "from_id": 123456,
+            "file": "voice_messages/audio_1@05-04-2016_13-26-02.ogg",
+            "media_type": "voice_message",
+            "mime_type": "audio/ogg",
+            "duration_seconds": 36,
+            "text": ""
+        }
+    ]
+}
+```
+
+`json` data in a `group chat`.
+
+```json
+{
+    "name": "group_name",
+    "type": "private_group",
+    "id": 111111,
+    "messages": [
+        {
+            "id": 35966,
+            "type": "service",
+            "date": "2016-04-04T22:35:06",
+            "edited": "1970-01-01T01:00:00",
+            "actor": "ane",
+            "actor_id": 222,
+            "action": "create_group",
+            "title": "group_name",
+            "members": [
+                "ane",
+                "Username"
+            ],
+            "text": ""
+        },
+        {
+            "id": 35968,
+            "type": "message",
+            "date": "2016-04-04T22:39:08",
+            "edited": "1970-01-01T01:00:00",
+            "from": "Username",
+            "from_id": 123456,
+            "text": "..."
+        }
+    ]
+}
+```