'use server'

import { eq } from 'drizzle-orm'
import { z } from 'zod'
import { actionClient } from '@/lib/safe-action'
import { getSession } from '@/server/auth'
import { db } from '@/server/db'
import { users } from '@/server/db/schema'

const timezoneSchema = z
  .string()
  .min(1)
  .max(64)
  .refine((tz) => {
    try {
      new Intl.DateTimeFormat(undefined, { timeZone: tz })
      return true
    } catch {
      return false
    }
  }, 'Invalid IANA timezone')

// Auth-only (not authedActionClient): a freshly signed-up user has no active
// organization yet, but still needs their timezone recorded.
export const updateTimezoneAction = actionClient
  .inputSchema(z.object({ timezone: timezoneSchema }))
  .action(async ({ parsedInput: { timezone } }) => {
    const session = await getSession()
    if (!session) {
      throw new Error('Not authenticated')
    }
    await db
      .update(users)
      .set({ timezone })
      .where(eq(users.id, session.user.id))
  })