import { ObjectId } from "../driver/mongodb/typings"

/**
 * A single property handler for FindOptionsOrder.
 */
export type FindOptionsOrderProperty<Property> = Property extends Promise<
    infer I
>
    ? FindOptionsOrderProperty<NonNullable<I>>
    : Property extends Array<infer I>
    ? FindOptionsOrderProperty<NonNullable<I>>
    : Property extends Function
    ? never
    : Property extends string
    ? FindOptionsOrderValue
    : Property extends number
    ? FindOptionsOrderValue
    : Property extends boolean
    ? FindOptionsOrderValue
    : Property extends Buffer
    ? FindOptionsOrderValue
    : Property extends Date
    ? FindOptionsOrderValue
    : Property extends ObjectId
    ? FindOptionsOrderValue
    : Property extends object
    ? FindOptionsOrder<Property> | FindOptionsOrderValue
    : FindOptionsOrderValue

/**
 * Order by find options.
 */
export type FindOptionsOrder<Entity> = {
    [P in keyof Entity]?: P extends "toString"
        ? unknown
        : FindOptionsOrderProperty<NonNullable<Entity[P]>>
}

/**
 * Value of order by in find options.
 */
export type FindOptionsOrderValue =
    | "ASC"
    | "DESC"
    | "asc"
    | "desc"
    | 1
    | -1
    | {
          direction?: "asc" | "desc" | "ASC" | "DESC"
          nulls?: "first" | "last" | "FIRST" | "LAST"
      }