39 lines
1.3 KiB
TypeScript
39 lines
1.3 KiB
TypeScript
// Copyright 2017-2021 @polkadot/api authors & contributors
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// SPDX-License-Identifier: Apache-2.0
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import { ApiPromise } from '@polkadot/api';
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import { Option, StorageKey } from '@polkadot/types';
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import { Bounty, BountyIndex } from '@polkadot/types/interfaces';
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import { Codec, Constructor, InterfaceTypes, Registry } from '@polkadot/types/types';
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export class BountyFactory {
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readonly #api: ApiPromise;
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readonly #registry: Registry;
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constructor (api: ApiPromise) {
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this.#api = api;
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this.#registry = this.#api.registry;
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}
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public storageKey = (index: number): StorageKey => {
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const key = new StorageKey(this.#registry, this.#api.query.bounties.bounties.key(this.bountyIndex(index)));
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return key.setMeta(this.#api.query.bounties.bounties.creator.meta);
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};
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public bountyIndex = (index: number): BountyIndex =>
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this.#registry.createType('BountyIndex', index);
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public defaultBounty = (): Bounty =>
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this.#registry.createType('Bounty');
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public optionOf = <T extends Codec>(value: T): Option<T> => {
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const typeName = this.#registry.getClassName(value.constructor as Constructor<T>);
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return new Option<T>(this.#registry, typeName as keyof InterfaceTypes, value);
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};
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public emptyOption = <T extends Codec>(typeName: keyof InterfaceTypes): Option<T> =>
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new Option<T>(this.#registry, typeName);
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}
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