Fix some bugs

- Fix a bug that `GET` requests without data will report an error in API
- Fix a bug that `aggregate` requests will get an error when the inner function raises an error
- Fix a bug that the charts of a course cannot be the same because of the incorrect primary keys
- Fix a bug that global ranking scores cannot be calculated if there are no chart in the database #61
- The first try to fix #60 (I don't think it can be done so easily.)

latest version/api/api_auth.py

@@ -16,7 +16,8 @@ def role_required(request, powers=[]):
         @wraps(view)
         def wrapped_view(*args, **kwargs):
             try:
-                request.json  # 检查请求json格式
+                if request.data:
+                    request.json  # 检查请求json格式
             except:
                 return error_return(PostError('Payload must be a valid json', api_error_code=-1), 400)
 

latest version/api/token.py

@@ -6,7 +6,7 @@ from core.sql import Connect
 from flask import Blueprint, request
 
 from .api_auth import api_try, request_json_handle, role_required
-from .api_code import error_return, success_return
+from .api_code import success_return
 
 bp = Blueprint('token', __name__, url_prefix='/token')
 
@@ -22,9 +22,9 @@ def token_post(data):
     try:
         auth_decode = bytes.decode(b64decode(data['auth']))
     except:
-        return error_return(PostError(api_error_code=-100))
+        raise PostError(api_error_code=-100)
     if not ':' in auth_decode:
-        return error_return(PostError(api_error_code=-100))
+        raise PostError(api_error_code=-100)
     name, password = auth_decode.split(':', 1)
 
     with Connect() as c: