Initial commit

src/util/validators.ts

@@ -0,0 +1,30 @@
+import { zValidator } from "@hono/zod-validator";
+import type { MiddlewareHandler } from "@hono/hono";
+import { z } from "zod";
+import type { HonoEnv } from "./types.ts";
+
+// thanks claude, this hurt my brain!
+export const typedZValidator = <T extends z.ZodSchema>(
+    target: 'query' | 'json' | 'form' | 'header' | 'param' | 'cookie', 
+    schema: T
+) => {
+    return zValidator(target, schema) as MiddlewareHandler<
+        HonoEnv,
+        string,
+        {
+            in: { [K in typeof target]: z.input<T> };
+            out: { [K in typeof target]: z.output<T> };
+        }
+    >;
+};
+
+export const transformStringToEnum = <T>(anEnum: { [s: number]: string }) => {
+    return (arg: string, ctx: z.RefinementCtx<string>) => {
+        const int = parseInt(arg);
+        if (isNaN(int)) ctx.addIssue("Must be parseable as a number");
+        else {
+            if (anEnum[int]) return int as T;
+            else ctx.addIssue("Number must be a valid enum member");
+        }
+    }
+}