Multi contract keystore

.changeset/clean-cougars-jump.md

@@ -0,0 +1,6 @@
+---
+"@near-js/keystores": minor
+"@near-js/keystores-browser": minor
+---
+
+Add multi_contract_keystore

packages/keystores-browser/src/index.ts

@@ -1 +1,2 @@
 export { BrowserLocalStorageKeyStore } from './browser_local_storage_key_store';
+export { MultiContractBrowserLocalStorageKeyStore } from './multi_contract_browser_local_storage_key_store';

packages/keystores-browser/src/multi_contract_browser_local_storage_key_store.ts

@@ -0,0 +1,159 @@
+import { KeyPair } from '@near-js/crypto';
+import { MultiContractKeyStore } from '@near-js/keystores';
+
+const LOCAL_STORAGE_KEY_PREFIX = 'near-api-js:keystore:';
+
+/**
+ * This class is used to store keys in the browsers local storage.
+ * 
+ * @see [https://docs.near.org/docs/develop/front-end/naj-quick-reference#key-store](https://docs.near.org/docs/develop/front-end/naj-quick-reference#key-store)
+ * @example
+ * ```js
+ * import { connect, keyStores } from 'near-api-js';
+ * 
+ * const keyStore = new keyStores.MultiContractBrowserLocalStorageKeyStore();
+ * const config = { 
+ *   keyStore, // instance of MultiContractBrowserLocalStorageKeyStore
+ *   networkId: 'testnet',
+ *   nodeUrl: 'https://rpc.testnet.near.org',
+ *   walletUrl: 'https://wallet.testnet.near.org',
+ *   helperUrl: 'https://helper.testnet.near.org',
+ *   explorerUrl: 'https://explorer.testnet.near.org'
+ * };
+ * 
+ * // inside an async function
+ * const near = await connect(config)
+ * ```
+ */
+export class MultiContractBrowserLocalStorageKeyStore extends MultiContractKeyStore {
+    /** @hidden */
+    private localStorage: any;
+    /** @hidden */
+    private prefix: string;
+
+    /**
+     * @param localStorage defaults to window.localStorage
+     * @param prefix defaults to `near-api-js:keystore:`
+     */
+    constructor(localStorage: any = window.localStorage, prefix = LOCAL_STORAGE_KEY_PREFIX) {
+        super();
+        this.localStorage = localStorage;
+        this.prefix = prefix;
+    }
+
+    /**
+     * Stores a {@link utils/key_pair!KeyPair} in local storage.
+     * @param networkId The targeted network. (ex. default, betanet, etc…)
+     * @param accountId The NEAR account tied to the key pair
+     * @param keyPair The key pair to store in local storage
+     * @param contractId The contract to store in local storage
+     */
+    async setKey(networkId: string, accountId: string, keyPair: KeyPair, contractId: string): Promise<void> {
+        this.localStorage.setItem(this.storageKeyForSecretKey(networkId, accountId, contractId), keyPair.toString());
+    }
+
+    /**
+     * Gets a {@link utils/key_pair!KeyPair} from local storage
+     * @param networkId The targeted network. (ex. default, betanet, etc…)
+     * @param accountId The NEAR account tied to the key pair
+     * @param contractId The NEAR contract tied to the key pair
+     * @returns {Promise<KeyPair>}
+     */
+    async getKey(networkId: string, accountId: string, contractId: string): Promise<KeyPair | null> {
+        const value = this.localStorage.getItem(this.storageKeyForSecretKey(networkId, accountId, contractId));
+        if (!value) {
+            return null;
+        }
+        return KeyPair.fromString(value);
+    }
+
+    /**
+     * Removes a {@link utils/key_pair!KeyPair} from local storage
+     * @param networkId The targeted network. (ex. default, betanet, etc…)
+     * @param accountId The NEAR account tied to the key pair
+     * @param contractId The NEAR contract tied to the key pair
+     */
+    async removeKey(networkId: string, accountId: string, contractId: string): Promise<void> {
+        this.localStorage.removeItem(this.storageKeyForSecretKey(networkId, accountId, contractId));
+    }
+
+    /**
+     * Removes all items that start with `prefix` from local storage
+     */
+    async clear(): Promise<void> {
+        for (const key of this.storageKeys()) {
+            if (key.startsWith(this.prefix)) {
+                this.localStorage.removeItem(key);
+            }
+        }
+    }
+
+    /**
+     * Get the network(s) from local storage
+     * @returns {Promise<string[]>}
+     */
+    async getNetworks(): Promise<string[]> {
+        const result = new Set<string>();
+        for (const key of this.storageKeys()) {
+            if (key.startsWith(this.prefix)) {
+                const parts = key.substring(this.prefix.length).split(':');
+                result.add(parts[1]);
+            }
+        }
+        return Array.from(result.values());
+    }
+
+    /**
+     * Gets the account(s) from local storage
+     * @param networkId The targeted network. (ex. default, betanet, etc…)
+     */
+    async getAccounts(networkId: string): Promise<string[]> {
+        const result = new Array<string>();
+        for (const key of this.storageKeys()) {
+            if (key.startsWith(this.prefix)) {
+                const parts = key.substring(this.prefix.length).split(':');
+                if (parts[1] === networkId) {
+                    result.push(parts[0]);
+                }
+            }
+        }
+        return result;
+    }
+
+    /**
+     * Gets the contract(s) from local storage
+     * @param networkId The targeted network. (ex. default, betanet, etc…)
+     * @param accountId The targeted account.
+     */
+    async getContracts(networkId: string, accountId: string): Promise<string[]> {
+        const result = new Array<string>();
+        for (const key of this.storageKeys()) {
+            if (key.startsWith(this.prefix)) {
+                const parts = key.substring(this.prefix.length).split(':');
+                if (parts[1] === networkId && parts[0] === accountId) {
+                    result.push(parts[2]);
+                }
+            }
+        }
+        return result;
+    }
+
+    /**
+     * @hidden
+     * Helper function to retrieve a local storage key
+     * @param networkId The targeted network. (ex. default, betanet, etc…)
+     * @param accountId The NEAR account tied to the storage keythat's sought
+     * @param contractId The NEAR contract tied to the storage keythat's sought
+     * @returns {string} An example might be: `near-api-js:keystore:near-friend:default`
+     */
+    private storageKeyForSecretKey(networkId: string, accountId: string, contractId: string): string {
+        return `${this.prefix}${accountId}:${networkId}:${contractId}`;
+    }
+
+    /** @hidden */
+    private *storageKeys(): IterableIterator<string> {
+        for (let i = 0; i < this.localStorage.length; i++) {
+            yield this.localStorage.key(i);
+        }
+    }
+}

packages/keystores-browser/test/browser_keystore.test.js

@@ -1,4 +1,4 @@
-const { BrowserLocalStorageKeyStore } = require('../lib');
+const { BrowserLocalStorageKeyStore, MultiContractBrowserLocalStorageKeyStore } = require('../lib');
 
 describe('Browser keystore', () => {
     let ctx = {};
@@ -9,3 +9,14 @@ describe('Browser keystore', () => {
 
     require('./keystore_common').shouldStoreAndRetrieveKeys(ctx);
 });
+
+
+describe('Browser multi keystore', () => {
+    let ctx = {};
+
+    beforeAll(async () => {
+        ctx.keyStore = new MultiContractBrowserLocalStorageKeyStore(require('localstorage-memory'));
+    });
+
+    require('./multi_contract_browser_keystore_common').shouldStoreAndRetrieveKeys(ctx);
+});

packages/keystores-browser/test/multi_contract_browser_keystore_common.js

@@ -0,0 +1,64 @@
+const { KeyPairEd25519 } = require('@near-js/crypto');
+
+const NETWORK_ID = 'networkid';
+const ACCOUNT_ID = 'accountid';
+const CONTRACT_ID = 'contractid';
+const KEYPAIR = new KeyPairEd25519('2wyRcSwSuHtRVmkMCGjPwnzZmQLeXLzLLyED1NDMt4BjnKgQL6tF85yBx6Jr26D2dUNeC716RBoTxntVHsegogYw');
+
+module.exports.shouldStoreAndRetrieveKeys = ctx => {
+    beforeEach(async () => {
+        await ctx.keyStore.clear();
+        await ctx.keyStore.setKey(NETWORK_ID, ACCOUNT_ID, KEYPAIR, CONTRACT_ID);
+    });
+
+    test('Get all keys with empty network returns empty list', async () => {
+        const emptyList = await ctx.keyStore.getAccounts('emptynetwork');
+        expect(emptyList).toEqual([]);
+    });  
+
+    test('Get all keys with single key in keystore', async () => {
+        const accountIds = await ctx.keyStore.getAccounts(NETWORK_ID);
+        expect(accountIds).toEqual([ACCOUNT_ID]);
+    });
+
+    test('Get not-existing account', async () => {
+        expect(await ctx.keyStore.getKey('somenetwork', 'someaccount', 'somecontract')).toBeNull();
+    });
+
+    test('Get account id from a network with single key', async () => {
+        const key = await ctx.keyStore.getKey(NETWORK_ID, ACCOUNT_ID, CONTRACT_ID);
+        expect(key).toEqual(KEYPAIR);
+    });
+
+    test('Get networks', async () => {
+        const networks = await ctx.keyStore.getNetworks();
+        expect(networks).toEqual([NETWORK_ID]);
+    });
+
+    test('Get accounts', async () => {
+        const accounts = await ctx.keyStore.getAccounts(NETWORK_ID);
+        expect(accounts).toEqual([ACCOUNT_ID]);
+    });
+
+    test('Get contracts', async () => {
+        const contracts = await ctx.keyStore.getContracts(NETWORK_ID, ACCOUNT_ID);
+        expect(contracts).toEqual([CONTRACT_ID]);
+    });
+
+    test('Add two contracts to account and retrieve them', async () => {
+        const networkId = 'network';
+        const accountId = 'account';
+        const contract1 = 'contract1';
+        const contract2 = 'contract2';
+        const key1Expected = KeyPairEd25519.fromRandom();
+        const key2Expected = KeyPairEd25519.fromRandom();
+        await ctx.keyStore.setKey(networkId, accountId, key1Expected, contract1);
+        await ctx.keyStore.setKey(networkId, accountId, key2Expected, contract2);
+        const key1 = await ctx.keyStore.getKey(networkId, accountId, contract1);
+        const key2 = await ctx.keyStore.getKey(networkId, accountId, contract2);
+        expect(key1).toEqual(key1Expected);
+        expect(key2).toEqual(key2Expected);
+        const contractIds = await ctx.keyStore.getContracts(networkId, accountId);
+        expect(contractIds).toEqual([contract1, contract2]);
+    });
+};

packages/keystores/src/index.ts

@@ -1,3 +1,4 @@
 export { InMemoryKeyStore } from './in_memory_key_store';
 export { KeyStore } from './keystore';
 export { MergeKeyStore } from './merge_key_store';
+export { MultiContractKeyStore } from './multi_contract_keystore';

packages/keystores/src/multi_contract_keystore.ts

@@ -0,0 +1,16 @@
+import { KeyPair } from '@near-js/crypto';
+
+/**
+ * KeyStores are passed to {@link near!Near} via {@link near!NearConfig}
+ * and are used by the {@link signer!InMemorySigner} to sign transactions.
+ * 
+ * @see {@link connect}
+ */
+export abstract class MultiContractKeyStore {
+    abstract setKey(networkId: string, accountId: string, keyPair: KeyPair, contractId: string): Promise<void>;
+    abstract getKey(networkId: string, accountId: string, contractId: string): Promise<KeyPair | null>;
+    abstract removeKey(networkId: string, accountId: string, contractId: string): Promise<void>;
+    abstract clear(): Promise<void>;
+    abstract getNetworks(): Promise<string[]>;
+    abstract getAccounts(networkId: string, contractId: string): Promise<string[]>;
+}