添加事件、分数更新、随机事件获取，学生被选择的概率现在和分数有关

.idea/.gitignore

@@ -1,8 +0,0 @@
-# 默认忽略的文件
-/shelf/
-/workspace.xml
-# 基于编辑器的 HTTP 客户端请求
-/httpRequests/
-# Datasource local storage ignored files
-/dataSources/
-/dataSources.local.xml

.idea/dataSources.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DataSourceManagerImpl" format="xml" multifile-model="true">
+    <data-source source="LOCAL" name="ROLLER_DB@localhost" uuid="9189e938-8553-4da1-b748-2f45425cc677">
+      <driver-ref>mariadb</driver-ref>
+      <synchronize>true</synchronize>
+      <jdbc-driver>org.mariadb.jdbc.Driver</jdbc-driver>
+      <jdbc-url>jdbc:mariadb://localhost:3306/ROLLER_DB</jdbc-url>
+      <working-dir>$ProjectFileDir$</working-dir>
+    </data-source>
+  </component>
+</project>

.idea/modules.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/roller-backend.iml" filepath="$PROJECT_DIR$/.idea/roller-backend.iml" />
-    </modules>
-  </component>
-</project>

.idea/roller-backend.iml

@@ -1,10 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<module type="PYTHON_MODULE" version="4">
+<module version="4">
-  <component name="NewModuleRootManager">
+  <component name="PyDocumentationSettings">
-    <content url="file://$MODULE_DIR$">
+    <option name="format" value="PLAIN" />
-      <excludeFolder url="file://$MODULE_DIR$/.venv" />
+    <option name="myDocStringFormat" value="Plain" />
-    </content>
-    <orderEntry type="jdk" jdkName="Python 3.12 (roller-backend)" jdkType="Python SDK" />
-    <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

.idea/sqldialects.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="SqlDialectMappings">
+    <file url="file://$PROJECT_DIR$/main.py" dialect="MariaDB" />
     <file url="PROJECT" dialect="MariaDB" />
   </component>
 </project>

main.py

@@ -1,10 +1,10 @@
-from math import floor
+from random import randint, random
-from random import uniform
 from fastapi import FastAPI, UploadFile
 from fastapi.middleware.cors import CORSMiddleware
 import sqlalchemy
 from sqlalchemy import text
 import pandas as pd
+from pydantic import BaseModel
 
 app = FastAPI()
 
@@ -19,7 +19,7 @@ app.add_middleware(
     allow_headers=["*"]
 )
 
-engine = sqlalchemy.create_engine("mariadb+mariadbconnector://cflsxjw:1212@127.0.0.1:3306/ROLLER_DB")
+engine = sqlalchemy.create_engine("mariadb+mariadbconnector://root:1212@127.0.0.1:3306/ROLLER_DB")
 
 
 @app.get("/")
@@ -30,14 +30,34 @@ async def root():
 @app.get("/api/get/get_random_stu")
 async def get_random_stu():
     with engine.connect() as c:
-        stu = c.execute(text("SELECT sno, sname FROM stu_info")).fetchall()
+        stu = c.execute(text("SELECT sno, sname, score FROM stu_info;")).fetchall()
+        avg = (c.execute(text(f"SELECT AVG(score) FROM stu_info;")).fetchall())[0][0]
         size = stu.__len__()
-    return {"sno": stu[floor(uniform(0, size - 1))][0], "sname": stu[floor(uniform(0, size - 1))][1]}
+        while 1:
+            no = randint(0, size - 1)
+            diff = stu[no][2] - avg
+            if diff > 7:
+                chance = 0.2
+            elif diff > 3:
+                chance = 0.7 - (diff-3) / 4 * 0.5
+            elif diff > 1:
+                chance = 0.9 - (diff-1) / 2 * 0.2
+            else:
+                chance = 1
+            if random() < chance:
+                break
+    return {"sno": stu[no][0], "sname": stu[no][1]}
 
 
 @app.get("/api/get/get_random_event")
 async def get_event():
-    return {"eventId": 10, "eventDescription": "疯狂星期四！/v我50:P"}
+    with engine.connect() as c:
+        res = c.execute(text("SELECT event_id, event_description FROM events")).fetchall()
+    if randint(0, 100) < 15:
+        event_id = randint(1, 2)
+    else:
+        event_id = 0
+    return {"event_id": res[event_id][0], "event_description": res[event_id][1]}
 
 @app.post("/api/post/upload_stu_info")
 async def upload_stu_info(file: UploadFile):
@@ -47,5 +67,15 @@ async def upload_stu_info(file: UploadFile):
         c.execute(text("TRUNCATE TABLE stu_info"))
     for i in data.index.values:
         with engine.begin() as c:
-            c.execute(text(f"INSERT INTO stu_info VALUES ('{data.values[i, 0]}', '{data.values[i,1]}', 0);"))
+            c.execute(text(f"INSERT INTO stu_info VALUES ('{data.values[i, 0]}', '{data.values[i,1]}', 0, 0);"))
     return file.filename
+
+class ChangedScore(BaseModel):
+    sno: str
+    variation: float
+
+@app.post("/api/post/update_score")
+async def update_score(changed_score: ChangedScore):
+    with engine.begin() as c:
+        c.execute(text(f"UPDATE stu_info SET score = score + {changed_score.variation} WHERE sno = '{changed_score.sno}'"))
+    return changed_score