import { type ProtocolVersion } from '@midnightntwrk/wallet-sdk-abstractions';
import { type AnyVariant, type VersionedVariant } from './Variant.js';
/**
 * Builds a target {@link Variant} object from internal build state.
 *
 * @typeParam TTState The type of state that the variant will operate over.
 * @typeParam TPreviousState The type of state that the variant can migrate from.
 * @typeParam TConfiguration A type representing the configuration required by the variant.
 */
export interface VariantBuilder<TVariant extends AnyVariant, TConfiguration extends object = object> {
    /**
     * Builds the target variant object from the internal build state.
     *
     * @param configuration The configuration to use when building the target variant.
     * @returns An instance of {@link Variant} that operates over `TState`.
     */
    build(configuration: TConfiguration): TVariant;
}
/** Base type that represents variant configuration. */
export type AnyBuilderConfiguration = object;
/** A utility type that represents any {@link VariantBuilder}. */
export type AnyVariantBuilder = VariantBuilder<AnyVariant, AnyBuilderConfiguration>;
export type VariantOf<T> = T extends VersionedVariantBuilder<infer TBuilder> ? VariantOf<TBuilder> : T extends VariantBuilder<infer TVariant, object> ? TVariant : never;
export type VersionedVariantBuilder<TBuilder extends AnyVariantBuilder> = Readonly<{
    sinceVersion: ProtocolVersion.ProtocolVersion;
    variantBuilder: TBuilder;
}>;
export type VariantsOf<T> = T extends [infer THead, ...infer TRest] ? [VariantOf<THead>, ...VariantsOf<TRest>] : T extends [] ? [] : never;
export type VersionedVariantsOf<T> = T extends [infer THead, ...infer Rest] ? [VersionedVariant<VariantOf<THead>>, ...VersionedVariantsOf<Rest>] : T extends [] ? [] : never;
export type ConfigurationOf<T> = T extends VariantBuilder<any, infer Config> ? Config : T extends VersionedVariantBuilder<infer Builder> ? ConfigurationOf<Builder> : never;
/** A type that associates a {@link VariantBuilder} with a given version of the Midnight protocol. */
export type AnyVersionedVariantBuilder = VersionedVariantBuilder<AnyVariantBuilder>;