@pradyumn-el/pollycli/src/message.js

pollycli lets users access the functionalities of Polly over a command line interface

const chalk = require('chalk');
const table = require('table');
const fs = require('fs');
const path = require('path');

export function pollySuccess(message) {
  console.log(chalk.green.bold(`Success: ${message}`));
}

export function pollyError(message) {
  console.log(chalk.red.bold(`Error: ${message}`));
  process.exit(1);
}


export function pollyErrorNoExit(message) {
  console.log(chalk.red.bold(`Error: ${message}`));
}

export function pollyMessage(message) {
  console.log(chalk.green.bold(`${message}`));
}

export function pollyTable(data, from = 1, to = data.length, tableConfig = null) {
  if (from < 1) {
    from = 1;
  }

  if (to > data.length) {
    to = data.length;
  }

  let tableHeaders = chalk.green.bold(data[0]).split(",");
  const dataMatrix = data.splice(from, to - from + 1);
  let message = null;
  
  if ( global.outputFormat && global.outputFormat.format === 'json' ) {
    fs.writeFileSync(path.resolve(global.outputFormat.path), JSON.stringify(arrayToJSONObject([...data, ...dataMatrix]), null, '  '));
  } else if ( tableConfig == null ) {
    message = table.table([tableHeaders, ...dataMatrix]);
  } else {
    message = table.table([tableHeaders, ...dataMatrix], tableConfig);
  }
  if (message) {
    console.log(message);
  }
}

function arrayToJSONObject(arr) {
  //header
  const keys = [];
  for (const key of arr[0]) {
    keys.push(key.trim().replace(/ /g,"_").toLowerCase());
  }

  //vacate keys from main array
  const newArr = arr.slice(1, arr.length);

  let formatted = [],
    data = newArr,
    cols = keys,
    l = cols.length;
  for (let i = 0; i < data.length; i++) {
    const d = data[i],
      o = {};
    for (let j = 0; j < l; j++) {
      if(isJson(d[j])) {
        o[cols[j]] = JSON.parse(d[j]);
      } else {
        o[cols[j]] = d[j];
      }
    }
    formatted.push(o);
  }
  return formatted;
}

export function pollyStreamTable(stream, dataOneByOne, colConfig = {}) {
  if (!stream) {
    const config = {
      columnDefault: {
        width: 25
      },
      columns: colConfig,
      columnCount: dataOneByOne.length
    };

    stream = table.createStream(config);
  }
  stream.write(dataOneByOne);

  return stream;
}

function isJson(item) {
  item = typeof item !== "string"
      ? JSON.stringify(item)
      : item;

  try {
      item = JSON.parse(item);
  } catch (e) {
      return false;
  }

  if (typeof item === "object" && item !== null) {
      return true;
  }

  return false;
}