Add an endpoint to delete tags

dbschema/default.esdl

@@ -135,7 +135,9 @@ module default {
 		location: str;
 
 
-		multi tags: Tag;
+		multi tags: Tag {
+			on target delete allow;
+		};
 		priority: Priority;
 
 		multi updates: Change {

src/routes/tags/delete.ts

@@ -0,0 +1,43 @@
+import e from "@edgedb";
+import { DATABASE_DELETE_FAILED, UNAUTHORIZED } from "constants/responses";
+import Elysia, { t } from "elysia";
+import { HttpStatusCode } from "elysia-http-status-code";
+import { client } from "index";
+import { auth } from "plugins/auth";
+import { promiseResult } from "utils/errors";
+import { responseBuilder } from "utils/response";
+
+export const deleteTag = new Elysia()
+	.use(auth)
+	.use(HttpStatusCode())
+	.delete("/:id", async ({ set, httpStatus, auth, params }) => {
+		if (!auth.isAuthorized) {
+			set.status = httpStatus.HTTP_401_UNAUTHORIZED;
+			return UNAUTHORIZED;
+		}
+
+		const query = e.delete(e.Tag, (t) => ({
+			filter_single: e.op(
+				e.op(t.id, "=", e.cast(e.uuid, params.id)),
+				"and",
+				e.op(auth.username, "in", t.class.students.username),
+			),
+		}));
+		const result = await promiseResult(() => query.run(client));
+
+		if (result.isError) {
+			set.status = httpStatus.HTTP_500_INTERNAL_SERVER_ERROR;
+			return DATABASE_DELETE_FAILED;
+		}
+		if (!result.data) {
+			set.status = httpStatus.HTTP_404_NOT_FOUND;
+			return responseBuilder("error", {
+				error: "This tag doesn't exist or you don't have rights to delete it",
+			});
+		}
+
+		return responseBuilder("success", {
+			data: null,
+			message: "Successfully deleted tag",
+		});
+	});

src/routes/tags/index.ts

@@ -1,7 +1,9 @@
 import Elysia from "elysia";
 import { createTag } from "./create";
+import { deleteTag } from "./delete";
 import { listTags } from "./list";
 
 export const tagRouter = new Elysia({ prefix: "/tags" })
 	.use(createTag)
+	.use(deleteTag)
 	.use(listTags);

src/routes/tags/list.ts

@@ -28,6 +28,7 @@ export const listTags = new Elysia().use(HttpStatusCode()).get(
 
 				tag: true,
 				color: true,
+				id: true,
 			};
 		});