mayorcoded

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0 <0.9.0;

contract Membership {

    uint256 public totalAmount;

    uint8 public constant EARLY_MEMBER  = 10;
    uint8 public constant PRO_MEMBER  = 20;

mayorcoded

//SPDX-License-Identifier: Unlicensed

pragma solidity ^0.8.0;

contract AMM {
    
}

mayorcoded

Some solidity

mayorcoded

require('dotenv').config();
const mongodbUri = require('mongodb-uri');
const {MongoClient} = require('mongodb');

async function runMigration(){
    const uri = process.env.DATABASE_URL;
    const uriObject = mongodbUri.parse(uri);
    const client = new MongoClient(uri,{ useNewUrlParser: true, useUnifiedTopology: true });
    try {
        await client.connect();

mayorcoded

truffle(develop)> buyFoodItemFromCart(6, 10);
truffle(develop)> UnhandledPromiseRejectionWarning: Error: VM Exception while processing transaction: revert ...

mayorcoded

truffle(develop)> buyFoodItemFromCart(0, 10);
truffle(develop)> { name: 'Fried Rice', sku: 0, price: 10, state: 'Sold', foodItemExist: false }

mayorcoded

let buyFoodItemFromCart = (itemSku, amount) => {foodCart.buyFoodItem(itemSku, {from: buyerAddress, value: amount}).then((trxn) => { const details = trxn.logs[0].args; details.sku = details.sku.toNumber(); details.price = details.price.toNumber(); details.state = trxn.logs[0].event; console.log(details);});}

mayorcoded

truffle(develop)> addFoodItemToCart('Fried Rice', 10);
truffle(develop)> { name: 'Fried Rice',sku: 0, price: 10, state: 'ForSale', foodItemExist: true } //output

truffle(develop)> addFoodItemToCart('Chicken Pepper Soup', 10);
truffle(develop)> { name: 'Chicken Pepper Soup', sku: 1, price: 10, state: 'ForSale', foodItemExist: true } //output

truffle(develop)> addFoodItemToCart('Pepperoni Pizza', 50);
truffle(develop)> { name: 'Pepperoni Pizza', sku: 2, price: 50, state: 'ForSale', foodItemExist: true } //output

mayorcoded

truffle(develop)> let addFoodItemToCart = (foodName, price) => {foodCart.addFoodItem(foodName, price).then((trxn) => { const details = trxn.logs[0].args; details.sku = details.sku.toNumber(); details.price = details.price.toNumber(); details.state = trxn.logs[0].event; console.log(details);});}

mayorcoded

var FoodCart = artifacts.require("./FoodCart.sol");

module.exports = function(deployer) {
  deployer.deploy(FoodCart);
};