import { db } from "#server/db";
import * as tables from "#server/db/schema";
import { eq } from "drizzle-orm";
import { z } from "zod";

const paramsSchema = z.object({
  id: z.string().transform(Number),
});

const bodySchema = z.object({
  name: z.string().min(1).optional(),
  path: z.string().min(1).optional(),
  url: z.url().optional(),
});

export default defineEventHandler(async (event) => {
  const params = await getValidatedRouterParams(event, paramsSchema.parse);
  const body = await readValidatedBody(event, bodySchema.parse);

  const conflicts = await findConflictingFields(body, params.id);
  if (conflicts.length > 0) {
    throw createError({ statusCode: 409, message: `A link with this ${joinFields(conflicts)} already exists` });
  }

  const [link] = await db
    .update(tables.links)
    .set(body)
    .where(eq(tables.links.id, params.id))
    .returning();
  if (!link) {
    throw createError({ statusCode: 404, message: "Link not found" });
  }

  return link;
});