Merge pull request #119 from Carifio24/delete-stage-state

Allow deleting stage state

src/database.ts

@@ -417,6 +417,16 @@ export async function updateStageState(studentID: number, storyName: string, sta
   return result?.state ?? null;
 }
 
+export async function deleteStageState(studentID: number, storyName: string, stageName: string): Promise<number> {
+  return StageState.destroy({
+    where: {
+      student_id: studentID,
+      story_name: storyName,
+      stage_name: stageName,
+    }
+  });
+}
+
 export async function getClassesForEducator(educatorID: number): Promise<Class[]> {
   return Class.findAll({
     where: {

src/server.ts

@@ -31,6 +31,7 @@ import {
   getDashboardGroupClasses,
   getStageState,
   updateStageState,
+  deleteStageState,
 } from "./database";
 
 import { getAPIKey, hasPermission } from "./authorization";
@@ -42,7 +43,7 @@ import {
   VerificationResult,
 } from "./request_results";
 
-import { CosmicDSSession } from "./models";
+import { CosmicDSSession, StageState } from "./models";
 
 import { ParsedQs } from "qs";
 import express, { Request, Response as ExpressResponse, NextFunction } from "express";
@@ -474,6 +475,29 @@ app.put("/stage-state/:studentID/:storyName/:stageName", async (req, res) => {
   });
 });
 
+app.delete("/stage-state/:studentID/:storyName/:stageName", async (req, res) => {
+  const params = req.params;
+  const studentID = Number(params.studentID);
+  const storyName = params.storyName;
+  const stageName = params.stageName;
+  const state = await getStageState(studentID, storyName, stageName);
+  if (state != null) {
+    res.status(200);
+    const count = await deleteStageState(studentID, storyName, stageName);
+    const success = count > 0;
+    res.json({
+      success,
+    });
+  } else {
+    res.status(400);
+    const message = "No such (student, story, stage) combination found";
+    res.statusMessage = message;
+    res.json({
+      message,
+    });
+  }
+});
+
 app.get("/educator-classes/:educatorID", async (req, res) => {
   const params = req.params;
   const educatorID = Number(params.educatorID);