useBorrower and useLoanManager

example-web/pages/components/MicroCredit/UserLoans.tsx

@@ -1,9 +1,9 @@
-import { useMicroCredit } from '@impact-market/utils/useMicroCredit';
+import { useBorrower } from '@impact-market/utils/useBorrower';
 import React, { useState } from 'react';
 import { useAccount } from 'wagmi';
 
 const UserLoans = () => {
-    const { userLoans, claimLoan, approve, repayLoan, getActiveLoanId, loan } = useMicroCredit();
+    const { userLoans, claimLoan, approve, repayLoan, getActiveLoanId, loan } = useBorrower();
     const { address } = useAccount();
     const [amount, setAmount] = useState('0');
 

package.json

@@ -78,7 +78,7 @@
         "ts-node": "10.9.1",
         "typedoc": "0.24.7",
         "typescript": "4.9.5",
-        "viem": "1.2.5",
+        "viem": "1.2.1",
         "wagmi": "1.3.3"
     },
     "peerDependencies": {

src/abi/MicroCreditABI.json

@@ -48,5 +48,38 @@
         ],
         "name": "walletMetadata",
         "inputs": [{ "type": "address", "name": "_userAddress", "internalType": "address" }]
+    },
+    {
+        "type": "function",
+        "stateMutability": "nonpayable",
+        "outputs": [],
+        "name": "addLoans",
+        "inputs": [
+            { "type": "address[]", "name": "_userAddresses", "internalType": "address[]" },
+            { "type": "uint256[]", "name": "_amounts", "internalType": "uint256[]" },
+            { "type": "uint256[]", "name": "_periods", "internalType": "uint256[]" },
+            { "type": "uint256[]", "name": "_dailyInterests", "internalType": "uint256[]" },
+            { "type": "uint256[]", "name": "_claimDeadlines", "internalType": "uint256[]" }
+        ]
+    },
+    {
+        "type": "function",
+        "stateMutability": "nonpayable",
+        "outputs": [],
+        "name": "cancelLoans",
+        "inputs": [
+            { "type": "address[]", "name": "_userAddresses", "internalType": "address[]" },
+            { "type": "uint256[]", "name": "_loansIds", "internalType": "uint256[]" }
+        ]
+    },
+    {
+        "type": "function",
+        "stateMutability": "nonpayable",
+        "outputs": [],
+        "name": "changeUserAddress",
+        "inputs": [
+            { "type": "address", "name": "_oldWalletAddress", "internalType": "address" },
+            { "type": "address", "name": "_newWalletAddress", "internalType": "address" }
+        ]
     }
 ]

src/contracts.ts

@@ -38,11 +38,33 @@ export interface IDepositRedirect extends Contract {
     interest(depositorAddress: string, tokenAddress: string, amount: string): Promise<any>;
 }
 
+export type UserLoans = {
+    amountBorrowed: BigNumber;
+    period: BigNumber;
+    dailyInterest: BigNumber;
+    claimDeadline: BigNumber;
+    startDate: BigNumber;
+    currentDebt: BigNumber;
+    lastComputedDebt: BigNumber;
+    amountRepayed: BigNumber;
+    repaymentsLength: BigNumber;
+    lastComputedDate: BigNumber;
+};
+
 export interface IMicroCredit extends Contract {
     approve(loanId: string, amount: string): Promise<void>;
-    userLoans(userAddress: string, loanId: string): Promise<void>;
+    userLoans(userAddress: string, loanId: number | string): Promise<UserLoans>;
     claimLoan(loanId: string): Promise<void>;
     repayLoan(loanId: string, amount: string): Promise<void>;
+    addLoans(
+        userAddresses: string[],
+        amounts: number[],
+        periods: number[],
+        dailyInterests: number[],
+        startDates: number[]
+    ): Promise<void>;
+    cancelLoans(userAddresses: string[], loansIds: number[]): Promise<void>;
+    changeUserAddress(oldWalletAddress: string, newWalletAddress: string): Promise<void>;
 }
 
 export const getContracts = (provider: BaseProvider, networkId: number) => {
@@ -92,7 +114,7 @@ export const getContracts = (provider: BaseProvider, networkId: number) => {
 
     const merkleDistributor = new Contract(addresses.merkleDistributor, MerkleDistributorABI, provider);
 
-    const microCredit = new Contract(addresses.microCredit, MicroCreditABI, provider);
+    const microCredit = new Contract(addresses.microCredit, MicroCreditABI, provider) as IMicroCredit;
 
     const donationMiner = new Contract(addresses.donationMiner, DonationMinerABI, provider);
 

src/index.ts

@@ -11,7 +11,8 @@ export * from './useManager';
 export * from './useEpoch';
 export * from './useRewards';
 export * from './useMerkleDistributor';
-export * from './useMicroCredit';
+export * from './useBorrower';
+export * from './useLoanManager';
 export * from './useAmbassador';
 export * from './useImpactMarketCouncil';
 export * from './useStaking';

src/useMicroCredit.tsx → src/useBorrower.tsx

@@ -1,6 +1,6 @@
 import { Contract } from '@ethersproject/contracts';
 import { ImpactProviderContext } from './ImpactProvider';
-import { getContracts } from './contracts';
+import { UserLoans, getContracts } from './contracts';
 import { internalUseTransaction } from './internalUseTransaction';
 import { toNumber } from './toNumber';
 import { toToken } from './toToken';
@@ -27,19 +27,8 @@ export type Loan = {
     repaymentsLength: number;
     startDate: number;
 };
-type RawLoan = {
-    amountBorrowed: BigNumber;
-    amountRepayed: BigNumber;
-    currentDebt: BigNumber;
-    dailyInterest: BigNumber;
-    lastComputedDate: BigNumber;
-    lastComputedDebt: BigNumber;
-    period: BigNumber;
-    repaymentsLength: BigNumber;
-    startDate: BigNumber;
-};
 
-export const useMicroCredit = () => {
+export const useBorrower = () => {
     const { provider, address, signer, networkId } = React.useContext(ImpactProviderContext);
     const executeTransaction = internalUseTransaction();
     const [loan, setLoan] = useState<Loan>({
@@ -114,10 +103,10 @@ export const useMicroCredit = () => {
 
     /**
      * Private method to dedut loan status
-     * @param {RawLoan} loan Loan raw data from smart-contract
+     * @param {UserLoans} loan Loan raw data from smart-contract
      * @returns {number} loan status
      */
-    const _loanStatus = (loan: RawLoan): number => {
+    const _loanStatus = (loan: UserLoans): number => {
         if (loan.lastComputedDebt.toString() === '0') {
             if (loan.period.toNumber() === 0) {
                 return LoanStatus.NO_LOAN;
@@ -131,7 +120,7 @@ export const useMicroCredit = () => {
         return LoanStatus.LOAN_CLAIMED;
     };
 
-    const updateLoan = (data: RawLoan) => {
+    const updateLoan = (data: UserLoans) => {
         const {
             amountBorrowed,
             amountRepayed,

src/useLoanManager.tsx

@@ -0,0 +1,81 @@
+import { ImpactProviderContext } from './ImpactProvider';
+import { getContracts } from './contracts';
+import { internalUseTransaction } from './internalUseTransaction';
+import { toToken } from './toToken';
+import React from 'react';
+
+export const useLoanManager = () => {
+    const { provider, address, signer, networkId } = React.useContext(ImpactProviderContext);
+    const executeTransaction = internalUseTransaction();
+
+    /**
+     * Add loans
+     * @param {string[]} userAddresses addresses to add loans to
+     * @param {number[]} amounts amount of each loan
+     * @param {number[]} periods periods of each loan
+     * @param {number[]} dailyInterests daily interests of each loan
+     * @param {number[]} startDates start dates of each loan
+     * @returns {Promise<TransactionReceipt>} tx details
+     */
+    const addLoans = async (
+        userAddresses: string[],
+        amounts: number[],
+        periods: number[],
+        dailyInterests: number[],
+        startDates: number[]
+    ) => {
+        if (!address || !signer) {
+            throw new Error('No wallet connected');
+        }
+
+        const { microCredit } = getContracts(provider, networkId);
+        const tx = await microCredit.populateTransaction.addLoans(
+            userAddresses,
+            amounts.map(amount => toToken(amount)),
+            periods,
+            dailyInterests.map(interest => toToken(interest)),
+            startDates
+        );
+        const response = await executeTransaction(tx);
+
+        return response;
+    };
+
+    /**
+     * Cancel loans
+     * @param {string[]} userAddresses addresses to cancel loans
+     * @param {number[]} loansIds ids of each loan
+     * @returns {Promise<TransactionReceipt>} tx details
+     */
+    const cancelLoans = async (userAddresses: string[], loansIds: number[]) => {
+        if (!address || !signer) {
+            throw new Error('No wallet connected');
+        }
+
+        const { microCredit } = getContracts(provider, networkId);
+        const tx = await microCredit.populateTransaction.cancelLoans(userAddresses, loansIds);
+        const response = await executeTransaction(tx);
+
+        return response;
+    };
+
+    /**
+     * Change user address
+     * @param {string} oldWalletAddress old wallet address
+     * @param {string} newWalletAddress new wallet address
+     * @returns {Promise<TransactionReceipt>} tx details
+     */
+    const changeUserAddress = async (oldWalletAddress: string, newWalletAddress: string) => {
+        if (!address || !signer) {
+            throw new Error('No wallet connected');
+        }
+
+        const { microCredit } = getContracts(provider, networkId);
+        const tx = await microCredit.populateTransaction.changeUserAddress(oldWalletAddress, newWalletAddress);
+        const response = await executeTransaction(tx);
+
+        return response;
+    };
+
+    return { addLoans, cancelLoans, changeUserAddress };
+};

yarn.lock

@@ -2445,11 +2445,6 @@ abab@^2.0.5, abab@^2.0.6:
   resolved "https://registry.yarnpkg.com/abab/-/abab-2.0.6.tgz#41b80f2c871d19686216b82309231cfd3cb3d291"
   integrity sha512-j2afSsaIENvHZN2B8GOpF566vZ5WVk5opAiMTvWgaQT8DkbOqsTfvNAvHoRGU2zzP8cPoqys+xHTRDWW8L+/BA==
 
-abitype@0.8.11:
-  version "0.8.11"
-  resolved "https://registry.yarnpkg.com/abitype/-/abitype-0.8.11.tgz#66e1cf2cbf46f48d0e57132d7c1c392447536cc1"
-  integrity sha512-bM4v2dKvX08sZ9IU38IN5BKmN+ZkOSd2oI4a9f0ejHYZQYV6cDr7j+d95ga0z2XHG36Y4jzoG5Z7qDqxp7fi/A==
-
 abitype@0.8.7:
   version "0.8.7"
   resolved "https://registry.yarnpkg.com/abitype/-/abitype-0.8.7.tgz#e4b3f051febd08111f486c0cc6a98fa72d033622"
@@ -6922,22 +6917,7 @@ valtio@1.10.6:
     proxy-compare "2.5.1"
     use-sync-external-store "1.2.0"
 
-viem@1.2.5:
-  version "1.2.5"
-  resolved "https://registry.yarnpkg.com/viem/-/viem-1.2.5.tgz#e9f80a57b80d8749624b4b31a98041549a25c5ad"
-  integrity sha512-AeQ1hiyPKXnWb/KTsxRLt7KZUmLgd6NTCe/GyQf+8TZO7ndXmSZf88swE+60v1bLT+FDUWXufKGJ2oNT129wXw==
-  dependencies:
-    "@adraffy/ens-normalize" "1.9.0"
-    "@noble/curves" "1.0.0"
-    "@noble/hashes" "1.3.0"
-    "@scure/bip32" "1.3.0"
-    "@scure/bip39" "1.2.0"
-    "@wagmi/chains" "1.2.0"
-    abitype "0.8.11"
-    isomorphic-ws "5.0.0"
-    ws "8.12.0"
-
-viem@^1.0.0:
+viem@1.2.1, viem@^1.0.0:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/viem/-/viem-1.2.1.tgz#88ea214b50ce6c74b0173c1cdfb5bb4bc7f6134d"
   integrity sha512-45eyE1QsPzUTJqslOD8SVAF3Nn3QMLZIKTu/YzaPPe8UuDMwrmvAWlfDole2kBzFAM8B6sXsQeZBQKYwtb7dVQ==