How to get the currently logged in user inside a Sanity schema

import {useClient, useCurrentUser} from 'sanity'

const GetUserRoles = () => {
    const user = useCurrentUser()
    const {roles} = user
    return roles
}

export function MyComponent {
  const user = useCurrentUser()
  const {id, name, email, profileImage, provider, roles} = currentUser

  return <div>JSX</div>
}

//array
const pageBlocks =
    [
        {type: "aDayInTheLifeBlock", title: "A Day In The Life"},
        {type: "beyondTheClassroomBlock", title: "Beyond The Classroom"},
        {type: "careerBlock", title: "Career Block"},
        {type: "cta", to: [{type: "cta"}], title: "Call to Action"},
            ....
    ]

//schema field

{
    group: "content",
        name: "contentBlocks",
    title: "Content Blocks",
    type: "array",
    of: pageBlocks
},
   

{
      name: 'contentBlocks',
      title: 'Content Blocks',
      type: 'array',
      of: pageBlocks,
      components: {
        input: RolesBasedArrayInput,
      },
    },

import React from 'react'
import {useCurrentUser} from 'sanity'

export function RolesBasedArrayInput(props) {
  const {schemaType, renderDefault} = props
  const {role} = useCurrentUser()

  const allowedTypes =
    role == 'administrator'
      ? schemaType.of
      : schemaType.of.filter((type) => !['aDayInTheLifeBlock', 'careerBlock'].includes(type.name))

  return <>{renderDefault({...props, schemaType: {...schemaType, of: allowedTypes}})}</>
}