/**
 * 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 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';
	  };