feat(promotions): add CRUD endpoints for promotion by id

- GET /promotions/{idPromo} returns promotion or 404
- PUT /promotions/{idPromo} updates year or 404
- DELETE /promotions/{idPromo} deletes promotion or 404
- Only employees allowed, otherwise 403

routes/(apps)/students/api/promotions/[idPromo].ts

@@ -0,0 +1,79 @@
+import { FreshContext, Handlers } from "$fresh/server.ts";
+import { db } from "$root/databases/db.ts";
+import { promotions } from "$root/databases/schema.ts";
+import { AuthenticatedState } from "$root/defaults/interfaces.ts";
+import { eq } from "npm:drizzle-orm";
+
+const NOT_FOUND = new Response(
+  JSON.stringify({ error: "Ressource introuvable" }),
+  { status: 404, headers: { "content-type": "application/json" } },
+);
+
+const FORBIDDEN = new Response(null, { status: 403 });
+
+export const handler: Handlers<null, AuthenticatedState> = {
+  // #15 GET /promotions/{idPromo}
+  async GET(
+    _request: Request,
+    context: FreshContext<AuthenticatedState>,
+  ): Promise<Response> {
+    if (context.state.session.eduPersonPrimaryAffiliation !== "employee") {
+      return FORBIDDEN;
+    }
+
+    const promo = await db
+      .select()
+      .from(promotions)
+      .where(eq(promotions.id, context.params.idPromo))
+      .then((rows) => rows[0] ?? null);
+
+    if (!promo) return NOT_FOUND;
+
+    return new Response(JSON.stringify(promo), {
+      headers: { "content-type": "application/json" },
+    });
+  },
+
+  // #16 PUT /promotions/{idPromo}
+  async PUT(
+    request: Request,
+    context: FreshContext<AuthenticatedState>,
+  ): Promise<Response> {
+    if (context.state.session.eduPersonPrimaryAffiliation !== "employee") {
+      return FORBIDDEN;
+    }
+
+    const body: { annee: string } = await request.json();
+
+    const [updated] = await db
+      .update(promotions)
+      .set({ annee: body.annee })
+      .where(eq(promotions.id, context.params.idPromo))
+      .returning();
+
+    if (!updated) return NOT_FOUND;
+
+    return new Response(JSON.stringify(updated), {
+      headers: { "content-type": "application/json" },
+    });
+  },
+
+  // #17 DELETE /promotions/{idPromo}
+  async DELETE(
+    _request: Request,
+    context: FreshContext<AuthenticatedState>,
+  ): Promise<Response> {
+    if (context.state.session.eduPersonPrimaryAffiliation !== "employee") {
+      return FORBIDDEN;
+    }
+
+    const [deleted] = await db
+      .delete(promotions)
+      .where(eq(promotions.id, context.params.idPromo))
+      .returning();
+
+    if (!deleted) return NOT_FOUND;
+
+    return new Response(null, { status: 204 });
+  },
+};