/**
 * Assets Service
 *
 * Interact with Asset Hub's Assets pallet for custom tokens and stablecoins
 */
import type { ApiPromise } from '@polkadot/api';
export interface AssetMetadata {
    name: string;
    symbol: string;
    decimals: number;
}
export interface AssetBalance {
    balance: bigint;
    isFrozen: boolean;
    isSufficient: boolean;
}
export declare class AssetsService {
    private api;
    constructor(api: ApiPromise);
    /**
     * Create a new asset
     *
     * @param assetId - Unique asset identifier
     * @param admin - Admin address for the asset
     * @param minBalance - Minimum balance required
     */
    createAssetTransaction(assetId: number, admin: string, minBalance: bigint): import("@polkadot/api-base/types").SubmittableExtrinsic<"promise", import("@polkadot/types/types").ISubmittableResult>;
    /**
     * Set asset metadata (name, symbol, decimals)
     */
    setMetadataTransaction(assetId: number, name: string, symbol: string, decimals: number): import("@polkadot/api-base/types").SubmittableExtrinsic<"promise", import("@polkadot/types/types").ISubmittableResult>;
    /**
     * Mint assets
     */
    mintTransaction(assetId: number, beneficiary: string, amount: bigint): import("@polkadot/api-base/types").SubmittableExtrinsic<"promise", import("@polkadot/types/types").ISubmittableResult>;
    /**
     * Transfer assets
     */
    transferTransaction(assetId: number, target: string, amount: bigint): import("@polkadot/api-base/types").SubmittableExtrinsic<"promise", import("@polkadot/types/types").ISubmittableResult>;
    /**
     * Burn assets
     */
    burnTransaction(assetId: number, amount: bigint): import("@polkadot/api-base/types").SubmittableExtrinsic<"promise", import("@polkadot/types/types").ISubmittableResult>;
    /**
     * Get asset balance for an address
     */
    getBalance(assetId: number, address: string): Promise<AssetBalance | null>;
    /**
     * Get asset metadata
     */
    getMetadata(assetId: number): Promise<AssetMetadata | null>;
    /**
     * Get asset details
     */
    getAssetDetails(assetId: number): Promise<{
        owner: string;
        issuer: string;
        admin: string;
        freezer: string;
        supply: bigint;
        accounts: number;
        sufficients: number;
        approvals: number;
        status: string;
    } | null>;
}
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