Harrison/fb loader (#1277)

Co-authored-by: Vairo Di Pasquale <vairo.dp@gmail.com>

docs/modules/document_loaders/examples/example_data/facebook_chat.json

@@ -0,0 +1,64 @@
+{
+    "participants": [{"name": "User 1"}, {"name": "User 2"}],
+    "messages": [
+        {"sender_name": "User 2", "timestamp_ms": 1675597571851, "content": "Bye!"},
+        {
+            "sender_name": "User 1",
+            "timestamp_ms": 1675597435669,
+            "content": "Oh no worries! Bye",
+        },
+        {
+            "sender_name": "User 2",
+            "timestamp_ms": 1675596277579,
+            "content": "No Im sorry it was my mistake, the blue one is not for sale",
+        },
+        {
+            "sender_name": "User 1",
+            "timestamp_ms": 1675595140251,
+            "content": "I thought you were selling the blue one!",
+        },
+        {
+            "sender_name": "User 1",
+            "timestamp_ms": 1675595109305,
+            "content": "Im not interested in this bag. Im interested in the blue one!",
+        },
+        {
+            "sender_name": "User 2",
+            "timestamp_ms": 1675595068468,
+            "content": "Here is $129",
+        },
+        {
+            "sender_name": "User 2",
+            "timestamp_ms": 1675595060730,
+            "photos": [
+                {"uri": "url_of_some_picture.jpg", "creation_timestamp": 1675595059}
+            ],
+        },
+        {
+            "sender_name": "User 2",
+            "timestamp_ms": 1675595045152,
+            "content": "Online is at least $100",
+        },
+        {
+            "sender_name": "User 1",
+            "timestamp_ms": 1675594799696,
+            "content": "How much do you want?",
+        },
+        {
+            "sender_name": "User 2",
+            "timestamp_ms": 1675577876645,
+            "content": "Goodmorning! $50 is too low.",
+        },
+        {
+            "sender_name": "User 1",
+            "timestamp_ms": 1675549022673,
+            "content": "Hi! Im interested in your bag. Im offering $50. Let me know if you are interested. Thanks!",
+        },
+    ],
+    "title": "User 1 and User 2 chat",
+    "is_still_participant": true,
+    "thread_path": "inbox/User 1 and User 2 chat",
+    "magic_words": [],
+    "image": {"uri": "image_of_the_chat.jpg", "creation_timestamp": 1675549016},
+    "joinable_mode": {"mode": 1, "link": ""},
+}

docs/modules/document_loaders/examples/facebook_chat.ipynb

@@ -0,0 +1,77 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Facebook Chat\n",
+    "\n",
+    "This notebook covers how to load data from the Facebook Chats into a format that can be ingested into LangChain."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from langchain.document_loaders import FacebookChatLoader"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "loader = FacebookChatLoader(\"example_data/facebook_chat.json\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[Document(page_content='User 2 on 2023-02-05 12:46:11: Bye!\\n\\nUser 1 on 2023-02-05 12:43:55: Oh no worries! Bye\\n\\nUser 2 on 2023-02-05 12:24:37: No Im sorry it was my mistake, the blue one is not for sale\\n\\nUser 1 on 2023-02-05 12:05:40: I thought you were selling the blue one!\\n\\nUser 1 on 2023-02-05 12:05:09: Im not interested in this bag. Im interested in the blue one!\\n\\nUser 2 on 2023-02-05 12:04:28: Here is $129\\n\\nUser 2 on 2023-02-05 12:04:05: Online is at least $100\\n\\nUser 1 on 2023-02-05 11:59:59: How much do you want?\\n\\nUser 2 on 2023-02-05 07:17:56: Goodmorning! $50 is too low.\\n\\nUser 1 on 2023-02-04 23:17:02: Hi! Im interested in your bag. Im offering $50. Let me know if you are interested. Thanks!\\n\\n', lookup_str='', metadata={'source': 'docs/modules/document_loaders/examples/example_data/facebook_chat.json'}, lookup_index=0)]"
+      ]
+     },
+     "execution_count": 3,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "loader.load()"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.11.1"
+  },
+  "vscode": {
+   "interpreter": {
+    "hash": "384707f4965e853a82006e90614c2e1a578ea1f6eb0ee07a1dd78a657d37dd67"
+   }
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}