BO40 - Create a shared schema and validation for API (#226)

* BO40 - Create a shared schema and validation for API

Co-authored-by: Camillo Bucciarelli <[email protected]>

functions/src/api/http/api.ts

@@ -7,6 +7,7 @@ import { createServer } from "http";
 import { functionsRegion } from "../../config";
 import { decodeIdToken, isOrganizer } from "../../services/auth";
 import { FunctionFastifyInstance } from "./fastify-config";
+import { sharedSchemas } from "./shared/shared.schema";
 
 let requestHandler: FastifyServerFactoryHandler;
 
@@ -53,6 +54,10 @@ app
     done(null, payload.body);
   });
 
+for (const schema of sharedSchemas) {
+  app.addSchema(schema);
+}
+
 export default onRequest({ region: functionsRegion }, (req, res) => {
   app.ready((err) => {
     if (err) throw err;

functions/src/api/http/shared/shared.schema.ts

@@ -0,0 +1,27 @@
+import { z } from "zod";
+import { buildJsonSchemas } from "fastify-zod";
+
+const idParamSchema = z.object({
+  id: z.string(),
+});
+
+const genericResponse = z.object({
+  message: z.string(),
+});
+
+const errorResponse = z.object({
+  statusCode: z.number(),
+  code: z.string().optional(),
+  error: z.string(),
+  message: z.string(),
+});
+
+export const { schemas: sharedSchemas, $ref: $sharedSchemaRef } =
+  buildJsonSchemas(
+    {
+      idParamSchema,
+      genericResponse,
+      errorResponse,
+    },
+    { $id: "SharedSchema" },
+  );

functions/src/api/http/shared/shared.type.ts

@@ -0,0 +1,16 @@
+type IdPathParam = {
+  id: string;
+};
+
+type GenericResponse = {
+  message: string;
+};
+
+type ErrorResponse = {
+  statusCode: number;
+  code?: string;
+  error: string;
+  message: string;
+};
+
+export { IdPathParam, GenericResponse, ErrorResponse };