feat: Add GitHub sync functionality to sync router (#2871)

The code changes in `sync_routes.py` add the GitHub sync functionality
to the sync router. This allows users to sync their GitHub repositories
with Quivr.

# Description

Please include a summary of the changes and the related issue. Please
also include relevant motivation and context.

## Checklist before requesting a review

Please delete options that are not relevant.

- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my code
- [ ] I have commented hard-to-understand areas
- [ ] I have ideally added tests that prove my fix is effective or that
my feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged

## Screenshots (if appropriate):

---------

Co-authored-by: Stan Girard <girard.stanislas@gmail.com>

backend/api/quivr_api/modules/sync/controller/github_sync_routes.py

@@ -0,0 +1,155 @@
+import os
+
+import requests
+from fastapi import APIRouter, Depends, HTTPException, Request
+from fastapi.responses import HTMLResponse
+from quivr_api.logger import get_logger
+from quivr_api.middlewares.auth import AuthBearer, get_current_user
+from quivr_api.modules.sync.dto.inputs import SyncsUserInput, SyncUserUpdateInput
+from quivr_api.modules.sync.service.sync_service import SyncService, SyncUserService
+from quivr_api.modules.user.entity.user_identity import UserIdentity
+
+from .successfull_connection import successfullConnectionPage
+
+# Initialize logger
+logger = get_logger(__name__)
+
+# Initialize sync service
+sync_service = SyncService()
+sync_user_service = SyncUserService()
+
+# Initialize API router
+github_sync_router = APIRouter()
+
+# Constants
+CLIENT_ID = os.getenv("GITHUB_CLIENT_ID")
+CLIENT_SECRET = os.getenv("GITHUB_CLIENT_SECRET")
+BACKEND_URL = os.getenv("BACKEND_URL", "http://localhost:5050")
+REDIRECT_URI = f"{BACKEND_URL}/sync/github/oauth2callback"
+SCOPE = "repo user"
+
+
+@github_sync_router.post(
+    "/sync/github/authorize",
+    dependencies=[Depends(AuthBearer())],
+    tags=["Sync"],
+)
+def authorize_github(
+    request: Request, name: str, current_user: UserIdentity = Depends(get_current_user)
+):
+    """
+    Authorize GitHub sync for the current user.
+
+    Args:
+        request (Request): The request object.
+        current_user (UserIdentity): The current authenticated user.
+
+    Returns:
+        dict: A dictionary containing the authorization URL.
+    """
+    logger.debug(f"Authorizing GitHub sync for user: {current_user.id}")
+    state = f"user_id={current_user.id},name={name}"
+    authorization_url = (
+        f"https://github.com/login/oauth/authorize?client_id={CLIENT_ID}"
+        f"&redirect_uri={REDIRECT_URI}&scope={SCOPE}&state={state}"
+    )
+
+    sync_user_input = SyncsUserInput(
+        user_id=str(current_user.id),
+        name=name,
+        provider="GitHub",
+        credentials={},
+        state={"state": state},
+    )
+    sync_user_service.create_sync_user(sync_user_input)
+    return {"authorization_url": authorization_url}
+
+
+@github_sync_router.get("/sync/github/oauth2callback", tags=["Sync"])
+def oauth2callback_github(request: Request):
+    """
+    Handle OAuth2 callback from GitHub.
+
+    Args:
+        request (Request): The request object.
+
+    Returns:
+        dict: A dictionary containing a success message.
+    """
+    state = request.query_params.get("state")
+    state_split = state.split(",")
+    current_user = state_split[0].split("=")[1]  # Extract user_id from state
+    name = state_split[1].split("=")[1] if state else None
+    state_dict = {"state": state}
+    logger.debug(
+        f"Handling OAuth2 callback for user: {current_user} with state: {state}"
+    )
+    sync_user_state = sync_user_service.get_sync_user_by_state(state_dict)
+    logger.info(f"Retrieved sync user state: {sync_user_state}")
+
+    if state_dict != sync_user_state["state"]:
+        logger.error("Invalid state parameter")
+        raise HTTPException(status_code=400, detail="Invalid state parameter")
+    if sync_user_state.get("user_id") != current_user:
+        logger.error("Invalid user")
+        raise HTTPException(status_code=400, detail="Invalid user")
+
+    token_url = "https://github.com/login/oauth/access_token"
+    data = {
+        "client_id": CLIENT_ID,
+        "client_secret": CLIENT_SECRET,
+        "code": request.query_params.get("code"),
+        "redirect_uri": REDIRECT_URI,
+        "state": state,
+    }
+    headers = {"Accept": "application/json"}
+    response = requests.post(token_url, data=data, headers=headers)
+    if response.status_code != 200:
+        logger.error(f"Failed to acquire token: {response.json()}")
+        raise HTTPException(
+            status_code=400,
+            detail=f"Failed to acquire token: {response.json()}",
+        )
+
+    result = response.json()
+    access_token = result.get("access_token")
+    if not access_token:
+        logger.error(f"Failed to acquire token: {result}")
+        raise HTTPException(
+            status_code=400,
+            detail=f"Failed to acquire token: {result}",
+        )
+
+    creds = result
+    logger.info(f"Fetched OAuth2 token for user: {current_user}")
+
+    # Fetch user email from GitHub API
+    github_api_url = "https://api.github.com/user"
+    headers = {"Authorization": f"Bearer {access_token}"}
+    response = requests.get(github_api_url, headers=headers)
+    if response.status_code != 200:
+        logger.error("Failed to fetch user profile from GitHub API")
+        raise HTTPException(status_code=400, detail="Failed to fetch user profile")
+
+    user_info = response.json()
+    user_email = user_info.get("email")
+    if not user_email:
+        # If the email is not public, make a separate API call to get emails
+        emails_url = "https://api.github.com/user/emails"
+        response = requests.get(emails_url, headers=headers)
+        if response.status_code == 200:
+            emails = response.json()
+            user_email = next(email["email"] for email in emails if email["primary"])
+        else:
+            logger.error("Failed to fetch user email from GitHub API")
+            raise HTTPException(status_code=400, detail="Failed to fetch user email")
+
+    logger.info(f"Retrieved email for user: {current_user} - {user_email}")
+
+    sync_user_input = SyncUserUpdateInput(
+        credentials=result, state={}, email=user_email
+    )
+
+    sync_user_service.update_sync_user(current_user, state_dict, sync_user_input)
+    logger.info(f"GitHub sync created successfully for user: {current_user}")
+    return HTMLResponse(successfullConnectionPage)

backend/api/quivr_api/modules/sync/controller/sync_routes.py

@@ -3,6 +3,7 @@ import uuid
 from typing import List
 
 from fastapi import APIRouter, Depends, status
+
 from quivr_api.logger import get_logger
 from quivr_api.middlewares.auth import AuthBearer, get_current_user
 from quivr_api.modules.notification.dto.inputs import CreateNotification
@@ -12,6 +13,7 @@ from quivr_api.modules.notification.service.notification_service import (
 )
 from quivr_api.modules.sync.controller.azure_sync_routes import azure_sync_router
 from quivr_api.modules.sync.controller.dropbox_sync_routes import dropbox_sync_router
+from quivr_api.modules.sync.controller.github_sync_routes import github_sync_router
 from quivr_api.modules.sync.controller.google_sync_routes import google_sync_router
 from quivr_api.modules.sync.dto import SyncsDescription
 from quivr_api.modules.sync.dto.inputs import SyncsActiveInput, SyncsActiveUpdateInput
@@ -38,6 +40,7 @@ sync_router = APIRouter()
 # Add Google routes here
 sync_router.include_router(google_sync_router)
 sync_router.include_router(azure_sync_router)
+sync_router.include_router(github_sync_router)
 sync_router.include_router(dropbox_sync_router)
 
 
@@ -60,6 +63,12 @@ dropbox_sync = SyncsDescription(
     auth_method=AuthMethodEnum.URI_WITH_CALLBACK,
 )
 
+github_sync = SyncsDescription(
+    name="GitHub",
+    description="Sync your GitHub Drive with Quivr",
+    auth_method=AuthMethodEnum.URI_WITH_CALLBACK,
+)
+
 
 @sync_router.get(
     "/sync/all",

backend/api/quivr_api/modules/sync/repository/sync_interfaces.py

@@ -48,14 +48,13 @@ class SyncUserInterface(ABC):
         self,
         sync_active_id: int,
         user_id: str,
-        folder_id: int = None,
+        folder_id: int | str | None = None,
         recursive: bool = False,
     ):
         pass
 
 
 class SyncInterface(ABC):
-
     @abstractmethod
     def create_sync_active(
         self,

backend/api/quivr_api/modules/sync/repository/sync_user.py

@@ -11,6 +11,7 @@ from quivr_api.modules.sync.repository.sync_interfaces import SyncUserInterface
 from quivr_api.modules.sync.utils.sync import (
     AzureDriveSync,
     DropboxSync,
+    GitHubSync,
     GoogleDriveSync,
 )
 
@@ -213,6 +214,15 @@ class SyncUser(SyncUserInterface):
                     sync_user["credentials"], folder_id if folder_id else "", recursive
                 )
             }
+        elif provider == "github":
+            logger.info("Getting files for GitHub sync")
+            sync = GitHubSync()
+            return {
+                "files": sync.get_files(
+                    sync_user["credentials"], folder_id if folder_id else "", recursive
+                )
+            }
+
         else:
             logger.warning(
                 "No sync found for provider: %s", sync_user["provider"], recursive

backend/api/quivr_api/modules/sync/tasks.py

@@ -11,6 +11,7 @@ from quivr_api.modules.sync.service.sync_service import SyncService, SyncUserSer
 from quivr_api.modules.sync.utils.sync import (
     AzureDriveSync,
     DropboxSync,
+    GitHubSync,
     GoogleDriveSync,
 )
 from quivr_api.modules.sync.utils.syncutils import SyncUtils
@@ -57,6 +58,14 @@ async def _process_sync_active():
         sync_cloud=DropboxSync(),
     )
 
+    github_sync_utils = SyncUtils(
+        sync_user_service=sync_user_service,
+        sync_active_service=sync_active_service,
+        sync_files_repo=sync_files_repo_service,
+        storage=storage,
+        sync_cloud=GitHubSync(),
+    )
+
     active = await sync_active_service.get_syncs_active_in_interval()
 
     for sync in active:
@@ -80,6 +89,10 @@ async def _process_sync_active():
                 await azure_sync_utils.sync(
                     sync_active_id=sync.id, user_id=sync.user_id
                 )
+            elif details_user_sync["provider"].lower() == "github":
+                await github_sync_utils.sync(
+                    sync_active_id=sync.id, user_id=sync.user_id
+                )
             elif details_user_sync["provider"].lower() == "dropbox":
                 await dropbox_sync_utils.sync(
                     sync_active_id=sync.id, user_id=sync.user_id

backend/api/quivr_api/modules/sync/utils/sync.py

@@ -2,6 +2,7 @@ import json
 import os
 import time
 from abc import ABC, abstractmethod
+from datetime import datetime
 from io import BytesIO
 from typing import Any, Dict, List, Union
 
@@ -12,10 +13,11 @@ from fastapi import HTTPException
 from google.auth.transport.requests import Request as GoogleRequest
 from google.oauth2.credentials import Credentials
 from googleapiclient.discovery import build
+from requests import HTTPError
+
 from quivr_api.logger import get_logger
 from quivr_api.modules.sync.entity.sync import SyncFile
 from quivr_api.modules.sync.utils.normalize import remove_special_characters
-from requests import HTTPError
 
 logger = get_logger(__name__)
 
@@ -66,7 +68,6 @@ class GoogleDriveSync(BaseSync):
         file_id = file.id
         file_name = file.name
         mime_type = file.mime_type
-        modified_time = file.last_modified
         if not self.creds:
             self.check_and_refresh_access_token(credentials)
         if not self.service:
@@ -291,7 +292,6 @@ class AzureDriveSync(BaseSync):
             "Authorization": f"Bearer {token_data['access_token']}",
             "Accept": "application/json",
         }
-    
 
     def check_and_refresh_access_token(self, credentials) -> Dict:
         if "refresh_token" not in credentials:
@@ -366,7 +366,7 @@ class AzureDriveSync(BaseSync):
 
         if not folder_id and not site_id:
             # Fetch the sites
-            #endpoint = "https://graph.microsoft.com/v1.0/me/followedSites"
+            # endpoint = "https://graph.microsoft.com/v1.0/me/followedSites"
             endpoint = "https://graph.microsoft.com/v1.0/sites?search=*"
         elif site_id == "root":
             if not folder_id:
@@ -427,9 +427,7 @@ class AzureDriveSync(BaseSync):
         logger.info("Azure Drive files retrieved successfully: %s", len(files))
         return files
 
-    def get_files_by_id(
-        self, credentials: dict, file_ids: List[str]
-    ) -> List[SyncFile] | dict:
+    def get_files_by_id(self, credentials: dict, file_ids: List[str]) -> List[SyncFile]:
         """
         Retrieve files from Azure Drive by their IDs.
 
@@ -489,9 +487,7 @@ class AzureDriveSync(BaseSync):
     ) -> Dict[str, Union[str, BytesIO]]:
         file_id = file.id
         file_name = file.name
-        modified_time = file.last_modified
         headers = self.get_azure_headers(credentials)
-
         site_id, folder_id = file_id.split(":")
         if folder_id == "":
             folder_id = None
@@ -687,3 +683,194 @@ class DropboxSync(BaseSync):
 
         metadata, file_data = self.dbx.files_download(file_id)  # type: ignore
         return {"file_name": file_name, "content": BytesIO(file_data.content)}
+
+
+class GitHubSync(BaseSync):
+    name = "GitHub"
+    lower_name = "github"
+    datetime_format = "%Y-%m-%dT%H:%M:%SZ"
+
+    def __init__(self):
+        self.CLIENT_ID = os.getenv("GITHUB_CLIENT_ID")
+        self.CLIENT_SECRET = os.getenv("GITHUB_CLIENT_SECRET")
+        self.BACKEND_URL = os.getenv("BACKEND_URL", "http://localhost:5050")
+        self.REDIRECT_URI = f"{self.BACKEND_URL}/sync/github/oauth2callback"
+        self.SCOPE = "repo user"
+
+    def get_github_token_data(self, credentials):
+        if "access_token" not in credentials:
+            raise HTTPException(status_code=401, detail="Invalid token data")
+        return credentials
+
+    def get_github_headers(self, token_data):
+        return {
+            "Authorization": f"Bearer {token_data['access_token']}",
+            "Accept": "application/json",
+        }
+
+    def check_and_refresh_access_token(self, credentials: dict) -> Dict:
+        # GitHub tokens do not support refresh token, usually need to re-authenticate
+        raise HTTPException(
+            status_code=400, detail="GitHub does not support token refresh"
+        )
+
+    def get_files(
+        self, credentials: Dict, folder_id: str | None = None, recursive: bool = False
+    ) -> List[SyncFile]:
+        logger.info("Retrieving GitHub files with folder_id: %s", folder_id)
+        if folder_id:
+            return self.list_github_files_in_repo(
+                credentials, folder_id, recursive=recursive
+            )
+        else:
+            return self.list_github_repos(credentials, recursive=recursive)
+
+    def get_files_by_id(self, credentials: Dict, file_ids: List[str]) -> List[SyncFile]:
+        token_data = self.get_github_token_data(credentials)
+        headers = self.get_github_headers(token_data)
+        files = []
+
+        for file_id in file_ids:
+            repo_name, file_path = file_id.split(":")
+            endpoint = f" https://api.github.com/repos/{repo_name}/contents/{file_path}"
+            response = requests.get(endpoint, headers=headers)
+            if response.status_code == 401:
+                raise HTTPException(status_code=401, detail="Unauthorized")
+            if response.status_code != 200:
+                logger.error(
+                    "An error occurred while retrieving GitHub files: %s", response.text
+                )
+                raise Exception("Failed to retrieve files")
+
+            result = response.json()
+            logger.debug("GitHub file result: %s", result)
+            files.append(
+                SyncFile(
+                    name=remove_special_characters(result.get("name")),
+                    id=f"{repo_name}:{result.get('path')}",
+                    is_folder=False,
+                    last_modified=datetime.now().strftime(self.datetime_format),
+                    mime_type=result.get("type"),
+                    web_view_link=result.get("html_url"),
+                )
+            )
+
+        logger.info("GitHub files retrieved successfully: %s", len(files))
+        return files
+
+    def download_file(
+        self, credentials: Dict, file: SyncFile
+    ) -> Dict[str, Union[str, BytesIO]]:
+        token_data = self.get_github_token_data(credentials)
+        headers = self.get_github_headers(token_data)
+        project_name, file_path = file.id.split(":")
+
+        # Construct the API endpoint for the file content
+        endpoint = f"https://api.github.com/repos/{project_name}/contents/{file_path}"
+
+        response = requests.get(endpoint, headers=headers)
+        if response.status_code != 200:
+            raise HTTPException(
+                status_code=response.status_code, detail="Failed to download file"
+            )
+
+        content = response.json().get("content")
+        if not content:
+            raise HTTPException(status_code=404, detail="File content not found")
+
+        # GitHub API returns content as base64 encoded string
+        import base64
+
+        file_content = base64.b64decode(content)
+
+        return {"file_name": file.name, "content": BytesIO(file_content)}
+
+    def list_github_repos(self, credentials, recursive=False):
+        def fetch_repos(endpoint, headers):
+            response = requests.get(endpoint, headers=headers)
+            if response.status_code == 401:
+                raise HTTPException(status_code=401, detail="Unauthorized")
+            if response.status_code != 200:
+                logger.error(
+                    "An error occurred while retrieving GitHub repositories: %s",
+                    response.text,
+                )
+                return []
+            return response.json()
+
+        token_data = self.get_github_token_data(credentials)
+        headers = self.get_github_headers(token_data)
+        endpoint = "https://api.github.com/user/repos"
+
+        items = fetch_repos(endpoint, headers)
+
+        if not items:
+            logger.info("No repositories found in GitHub")
+            return []
+
+        repos = []
+        for item in items:
+            repo_data = SyncFile(
+                name=remove_special_characters(item.get("name")),
+                id=f"{item.get('full_name')}:",
+                is_folder=True,
+                last_modified=str(item.get("updated_at")),
+                mime_type="repository",
+                web_view_link=item.get("html_url"),
+            )
+            repos.append(repo_data)
+
+            if recursive:
+                submodule_files = self.list_github_files_in_repo(
+                    credentials, repo_data.id
+                )
+                repos.extend(submodule_files)
+
+        logger.info("GitHub repositories retrieved successfully: %s", len(repos))
+        return repos
+
+    def list_github_files_in_repo(self, credentials, repo_folder, recursive=False):
+        def fetch_files(endpoint, headers):
+            response = requests.get(endpoint, headers=headers)
+            if response.status_code == 401:
+                raise HTTPException(status_code=401, detail="Unauthorized")
+            if response.status_code != 200:
+                logger.error(
+                    "An error occurred while retrieving GitHub repository files: %s",
+                    response.text,
+                )
+                return []
+            return response.json()
+
+        repo_name, folder_path = repo_folder.split(":")
+        token_data = self.get_github_token_data(credentials)
+        headers = self.get_github_headers(token_data)
+        endpoint = f"https://api.github.com/repos/{repo_name}/contents/{folder_path}"
+        logger.debug(f"Fetching files from GitHub with link: {endpoint}")
+
+        items = fetch_files(endpoint, headers)
+
+        if not items:
+            logger.info(f"No files found in GitHub repository {repo_name}")
+            return []
+
+        files = []
+        for item in items:
+            file_data = SyncFile(
+                name=remove_special_characters(item.get("name")),
+                id=f"{repo_name}:{item.get('path')}",
+                is_folder=item.get("type") == "dir",
+                last_modified=str(item.get("updated_at")),
+                mime_type=item.get("type"),
+                web_view_link=item.get("html_url"),
+            )
+            files.append(file_data)
+
+            if recursive and file_data.is_folder:
+                folder_files = self.list_github_files_in_repo(
+                    credentials, repo_folder=file_data.id, recursive=True
+                )
+                files.extend(folder_files)
+
+        logger.info(f"GitHub repository files retrieved successfully: {len(files)}")
+        return files

backend/api/quivr_api/modules/sync/utils/syncutils.py

@@ -4,6 +4,7 @@ from typing import List
 
 from fastapi import UploadFile
 from pydantic import BaseModel, ConfigDict
+
 from quivr_api.logger import get_logger
 from quivr_api.modules.brain.repository.brains_vectors import BrainsVectors
 from quivr_api.modules.knowledge.repository.storage import Storage
@@ -59,7 +60,7 @@ class SyncUtils(BaseModel):
             dict: A dictionary containing the status of the download or an error message.
         """
 
-        credentials = self.sync_cloud.check_and_refresh_access_token(credentials)
+        # credentials = self.sync_cloud.check_and_refresh_access_token(credentials)
 
         downloaded_files = []
         bulk_id = uuid.uuid4()

frontend/lib/api/sync/sync.ts

@@ -48,6 +48,7 @@ export const syncDropbox = async (
   ).data;
 };
 
+
 export const getUserSyncs = async (
   axiosInstance: AxiosInstance
 ): Promise<Sync[]> => {

frontend/lib/api/sync/types.ts

@@ -1,6 +1,6 @@
-export type Provider = "Google" | "Azure" | "DropBox";
+export type Provider = "Google" | "Azure" | "DropBox" | "GitHub";
 
-export type Integration = "Google Drive" | "Share Point" | "Dropbox";
+export type Integration = "Google Drive" | "Share Point" | "Dropbox" | "GitHub";
 
 export interface SyncElement {
   name?: string;

frontend/lib/api/sync/useSync.ts

@@ -10,9 +10,10 @@ import {
   getUserSyncs,
   syncDropbox,
   syncFiles,
+  syncGitHub,
   syncGoogleDrive,
   syncSharepoint,
-  updateActiveSync,
+  updateActiveSync
 } from "./sync";
 import { Integration, OpenedConnection, Provider } from "./types";
 
@@ -27,6 +28,8 @@ export const useSync = () => {
       "https://quivr-cms.s3.eu-west-3.amazonaws.com/sharepoint_8c41cfdb09.png",
     DropBox:
       "https://quivr-cms.s3.eu-west-3.amazonaws.com/dropbox_dce4f3d753.png",
+    GitHub:
+      "https://quivr-cms.s3.eu-west-3.amazonaws.com/dropbox_dce4f3d753.png",
   };
 
   const integrationIconUrls: Record<Integration, string> = {
@@ -36,6 +39,8 @@ export const useSync = () => {
       "https://quivr-cms.s3.eu-west-3.amazonaws.com/sharepoint_8c41cfdb09.png",
     Dropbox:
       "https://quivr-cms.s3.eu-west-3.amazonaws.com/dropbox_dce4f3d753.png",
+    GitHub:
+      "https://quivr-cms.s3.eu-west-3.amazonaws.com/dropbox_dce4f3d753.png",
   };
 
   const getActiveSyncsForBrain = async (brainId: string) => {
@@ -49,6 +54,7 @@ export const useSync = () => {
       syncGoogleDrive(name, axiosInstance),
     syncSharepoint: async (name: string) => syncSharepoint(name, axiosInstance),
     syncDropbox: async (name: string) => syncDropbox(name, axiosInstance),
+    syncGitHub: async (name: string) => syncGitHub(name, axiosInstance),
     getUserSyncs: async () => getUserSyncs(axiosInstance),
     getSyncFiles: async (userSyncId: number, folderId?: string) =>
       getSyncFiles(axiosInstance, userSyncId, folderId),

frontend/lib/components/ConnectionCards/ConnectionCards.tsx

@@ -10,7 +10,7 @@ interface ConnectionCardsProps {
 export const ConnectionCards = ({
   fromAddKnowledge,
 }: ConnectionCardsProps): JSX.Element => {
-  const { syncGoogleDrive, syncSharepoint, syncDropbox } = useSync();
+  const { syncGoogleDrive, syncSharepoint, syncDropbox, syncGitHub } = useSync();
 
   return (
     <div