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

export default defineEventHandler(async (event) => {
	const session = await requireServerSession(event);

	if (session.account.type !== "admin" && session.account.type !== "crew") {
		throw createError({
			status: 403,
			statusMessage: "Forbidden",
			message: "Only crew and admin accounts can edit the schedule.",
		});
	}

	const { success, error, data: update } = apiScheduleSchema.safeParse(await readBody(event));
	if (!success) {
		throw createError({
			status: 400,
			statusText: "Bad Request",
			message: z.prettifyError(error),
		});
	}

	if (update.deleted) {
		throw createError({
			statusCode: 400,
			statusMessage: "Not implemented",
		});
	}

	const schedule = await readSchedule();

	if (schedule.deleted) {
		throw createError({
			statusCode: 400,
			statusMessage: "Not implemented",
		});
	}

	// Validate edit restrictions for crew
	if (session.account.type === "crew") {
		if (update.locations?.length) {
			throw createError({
				status: 403,
				statusMessage: "Forbidden",
				message: "Only admin accounts can edit locations.",
			});
		}
		for (const event of update.events ?? []) {
			const original = schedule.events?.find(e => e.id === event.id);
			if (original && !original.deleted && !original.crew) {
				throw createError({
					status: 403,
					statusMessage: "Forbidden",
					message: "Only admin accounts can edit public events.",
				});
			}
		}
	}

	// Update schedule
	const updatedFrom = schedule.updatedAt;
	update.updatedAt = new Date().toISOString();
	if (update.events) {
		for (const event of update.events) event.updatedAt = update.updatedAt;
		applyUpdatesToArray(update.events, schedule.events = schedule.events ?? []);
	}
	if (update.locations) {
		for (const location of update.locations) location.updatedAt = update.updatedAt;
		applyUpdatesToArray(update.locations, schedule.locations = schedule.locations ?? []);
	}
	if (update.roles) {
		for (const role of update.roles) role.updatedAt = update.updatedAt;
		applyUpdatesToArray(update.roles, schedule.roles = schedule.roles ?? []);
	}
	if (update.shifts) {
		for (const shift of update.shifts) shift.updatedAt = update.updatedAt;
		applyUpdatesToArray(update.shifts, schedule.shifts = schedule.shifts ?? []);
	}

	await writeSchedule(schedule);
	await broadcastEvent({
		type: "schedule-update",
		updatedFrom,
		data: update,
	});
})