nessdb/functions/jsondb.js

a JSON/YAML/LocalStorage database module

"use strict";

const fs = require("fs");

module.exports.set = function (path, value, obj) {
    var schema = obj;
    var pList = path.split(".");
    var len = pList.length;
    for(var i = 0; i < len-1; i++) {
        var elem = pList[`${i}`];
        if( typeof schema[`${elem}`] !== "object" ) {
          schema[`${elem}`] = {};
        }
        schema = schema[`${elem}`];
    }
    schema[pList[`${len-1}`]] = value;
};

module.exports.get = function(obj, ...data) {
  return data.reduce(function(acc, key) {
    return acc[`${key}`];
  }, obj);
};

module.exports.remove = function(obj, path) {

    if (!obj || !path) {
      return;
    }
  
    if (typeof path === "string") {
      path = path.split(".");
    }
  
    for (var i = 0; i < path.length - 1; i++) {
  
      obj = obj[path[`${i}`]];
  
      if (typeof obj === "undefined") {
        return;
      }
    }
  
    delete obj[path.pop()];
};

module.exports.fetchFiles = function(dbFolder, dbName) {

    if (fs.existsSync(`${dbFolder}`) === false){
        fs.mkdirSync(`${dbFolder}`);
        if(fs.existsSync(`./${dbFolder}/${dbName}.json`) === false) {
            fs.writeFileSync(`./${dbFolder}/${dbName}.json`, "{}");
            return;
        }
    } else {
        if(fs.existsSync(`./${dbFolder}/${dbName}.json`) === false) {
            fs.writeFileSync(`./${dbFolder}/${dbName}.json`, "{}");
        }
    }

};

module.exports.removeEmptyData = function (obj) {

  var remove = function(obj) {
    Object.keys(obj).forEach(function(key) {
      if (obj[`${key}`] && typeof obj[`${key}`] === "object") { 
        remove(obj[`${key}`]);
      } else if (obj[`${key}`] === null || obj[`${key}`]=== "") { 
        delete obj[`${key}`];
      }
      if (typeof obj[`${key}`] === "object" && Object.keys(obj[`${key}`]).length === 0) {
       delete obj[`${key}`];
      }
    });
  };

  Object.keys(obj).forEach(function(key) {
    if (obj[`${key}`] && typeof obj[`${key}`] === "object") {
      remove(obj[`${key}`]);
    } else if (obj[`${key}`] === null || obj[`${key}`]=== "") {
      delete obj[`${key}`];
    }
    if (typeof obj[`${key}`] === "object" && Object.keys(obj[`${key}`]).length === 0) {
      delete obj[`${key}`];
    }
  });

};