Add OAuth 2.0 authorization login (#293)

* [WIP] Add OAuth 2.0 authorization login

* Add social user relationship table

* Update social user relationship table back_populates

* Add OAuth 2.0 related interface

* Automatically redirect authorization addresses

* Update OAuth2 authorization to GitHub

* Add implementation code

* fix the callback interface return

* fix typo

* fix the api return

* fix imports

* Fix logic for creating system users and social tables

* Fix user information storage

* Add OAuth2 source link

* remove unnecessary db refresh

* remove the front end docker-compose annotation

backend/app/api/v1/auth/github.py

@@ -0,0 +1,35 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+from fastapi import APIRouter, BackgroundTasks, Depends, Request
+from fastapi_oauth20 import FastAPIOAuth20, GitHubOAuth20
+
+from backend.app.common.response.response_schema import ResponseModel, response_base
+from backend.app.core.conf import settings
+from backend.app.services.github_service import github_service
+
+router = APIRouter()
+
+github_client = GitHubOAuth20(settings.OAUTH2_GITHUB_CLIENT_ID, settings.OAUTH2_GITHUB_CLIENT_SECRET)
+github_oauth2 = FastAPIOAuth20(github_client, settings.OAUTH2_GITHUB_REDIRECT_URI)
+
+
+@router.get('/github', summary='获取 Github 授权链接')
+async def auth_github() -> ResponseModel:
+    auth_url = await github_client.get_authorization_url(redirect_uri=settings.OAUTH2_GITHUB_REDIRECT_URI)
+    return await response_base.success(data=auth_url)
+
+
+@router.get(
+    '/github/callback',
+    summary='Github 授权重定向',
+    description='Github 授权后，自动重定向到当前地址并获取用户信息，通过用户信息自动创建系统用户',
+    response_model=None,
+)
+async def login_github(
+    request: Request, background_tasks: BackgroundTasks, oauth: FastAPIOAuth20 = Depends(github_oauth2)
+) -> ResponseModel:
+    token, state = oauth
+    access_token = token['access_token']
+    user = await github_client.get_userinfo(access_token)
+    data = await github_service.add_with_login(request, background_tasks, user)
+    return await response_base.success(data=data)