@libertypie/truffle-seeder/src/classes/Utils.js

Easily seed initial data to smart contracts using this npm package

/*
* LibertyPie Project (https://libertypie.com)
* @author https://github.com/libertypie (hello@libertypie.com)
* @license SPDX-License-Identifier: MIT
*/

const colors = require("colors");
const fs = require("fs")
const process = require("process")
const _uweb3 = (new require("web3"))

module.exports = class Utils {

   static isSilentMode = () => {
      return (process.env["SILENT_MODE"] == 1)
   }
    /**
     * fromDaysToMilli
     */
    static fromDaysToMilli(noOfDays) {
        return (60 * 60 * 24 * noOfDays * 1000);
    }

    /**
     * fromMinutesToMilli
     */
     static fromMinutesToMilli(noOfMinutes){
        return (60  * noOfMinutes * 1000);
     }

    /**
     * fromHoursToMilli
     */
     static fromHoursToMilli(noOfHours){
        return (60  * 60 * noOfHours * 1000);
     }


      static successMsg(msg){
         if(!this.isSilentMode()){
            console.log(`-> %c${colors.bold.green(msg)}`,"font-size: x-large")
         }
      }

      static infoMsg(msg){
         if(!this.isSilentMode()){
            console.log(`-> %c${colors.bold.blue(msg)}`,"font-size: x-large")
         }
      }


      static errorMsg(msg){
         if(!this.isSilentMode()){ 
            console.log(`-> %c${colors.bold.red(msg)}`,"font-size: x-large")
         }
      }

      /**
       * exists
       * @param {*} file 
       * @returns 
       */
      static exists = (file) => {
         return new Promise((resolve) => {
             fs.access(file, fs.constants.F_OK, (err) => {
                 err ? resolve(false) : resolve(true)
             });
         })
     }

   /**
   * getGasEstimate
   */
   static async  getGasEstimate(contractInstance, contractMethod, params, web3Account) {
      try {

         let result = await contractInstance.methods[contractMethod](...params).estimateGas({from: web3Account})
         
         return result;
      } catch (e){
         console.error(`getGasEstimate error for: ${contractMethod}`)
         throw e;
      }
   }


   /**
    * toBytes32
    */
   static toBytes32(data){
      var dataHex = _uweb3.utils.fromAscii(data, 32);
      return (new _uweb3.modules.Eth()).abi.encodeParameter('bytes32', dataHex);
   }

}