/*
	SPDX-FileCopyrightText: © 2025 Hornwitser <code@hornwitser.no>
	SPDX-License-Identifier: AGPL-3.0-or-later
*/
import { readUsers, writeUsers } from "~/server/database";
import { apiUserPatchSchema } from "~/shared/types/api";
import { z } from "zod/v4-mini";
import { broadcastEvent } from "~/server/streams";

export default defineEventHandler(async (event) => {
	await requireServerSessionWithAdmin(event);
	const { success, error, data: patch } = apiUserPatchSchema.safeParse(await readBody(event));
	if (!success) {
		throw createError({
			status: 400,
			statusText: "Bad Request",
			message: z.prettifyError(error),
		});
	}

	const users = await readUsers();
	const user = users.find(user => user.id === patch.id);
	if (!user || user.deleted) {
		throw createError({
			status: 409,
			statusText: "Conflict",
			message: "User does not exist",
		});

	}

	if (patch.type) {
		if (patch.type === "anonymous" || user.type === "anonymous") {
			throw createError({
				status: 409,
				statusText: "Conflict",
				message: "Anonymous user type cannot be changed.",
			});
		}
		user.type = patch.type;
	}
	if (patch.name) {
		if (user.type === "anonymous") {
			throw createError({
				status: 409,
				statusText: "Conflict",
				message: "Anonymous user cannot have name set.",
			});
		}
		user.name = patch.name;
	}
	user.updatedAt = new Date().toISOString();
	await writeUsers(users);
	broadcastEvent({
		type: "user-update",
		data: serverUserToApi(user),
	})

	// Update Schedule counts.
	await updateScheduleInterestedCounts(users);
})