Revamp authentication routes structure (#201)

* Fix #68: use makefun to generate dynamic dependencies

* Remove every Starlette imports

* Split every routers and remove event handlers

* Make users router optional

* Pass after_update handler to get_users_router

* Update documentation

* Remove test file

* Write migration doc for splitted routers

docs/src/full_sqlalchemy.py

@@ -1,11 +1,10 @@
 import databases
 import sqlalchemy
-from fastapi import FastAPI
+from fastapi import FastAPI, Request
 from fastapi_users import FastAPIUsers, models
 from fastapi_users.authentication import JWTAuthentication
 from fastapi_users.db import SQLAlchemyBaseUserTable, SQLAlchemyUserDatabase
 from sqlalchemy.ext.declarative import DeclarativeMeta, declarative_base
-from starlette.requests import Request
 
 DATABASE_URL = "sqlite:///./test.db"
 SECRET = "SECRET"
@@ -44,27 +43,36 @@ users = UserTable.__table__
 user_db = SQLAlchemyUserDatabase(UserDB, database, users)
 
 
-auth_backends = [
-    JWTAuthentication(secret=SECRET, lifetime_seconds=3600),
-]
-
-app = FastAPI()
-fastapi_users = FastAPIUsers(
-    user_db, auth_backends, User, UserCreate, UserUpdate, UserDB, SECRET,
-)
-app.include_router(fastapi_users.router, prefix="/users", tags=["users"])
-
-
-@fastapi_users.on_after_register()
-def on_after_register(user: User, request: Request):
+def on_after_register(user: UserDB, request: Request):
     print(f"User {user.id} has registered.")
 
 
-@fastapi_users.on_after_forgot_password()
-def on_after_forgot_password(user: User, token: str, request: Request):
+def on_after_forgot_password(user: UserDB, token: str, request: Request):
     print(f"User {user.id} has forgot their password. Reset token: {token}")
 
 
+jwt_authentication = JWTAuthentication(secret=SECRET, lifetime_seconds=3600)
+
+app = FastAPI()
+fastapi_users = FastAPIUsers(
+    user_db, [jwt_authentication], User, UserCreate, UserUpdate, UserDB,
+)
+app.include_router(
+    fastapi_users.get_auth_router(jwt_authentication), prefix="/auth/jwt", tags=["auth"]
+)
+app.include_router(
+    fastapi_users.get_register_router(on_after_register), prefix="/auth", tags=["auth"]
+)
+app.include_router(
+    fastapi_users.get_reset_password_router(
+        SECRET, after_forgot_password=on_after_forgot_password
+    ),
+    prefix="/auth",
+    tags=["auth"],
+)
+app.include_router(fastapi_users.get_users_router(), prefix="/users", tags=["users"])
+
+
 @app.on_event("startup")
 async def startup():
     await database.connect()