docparse-supplier-nge/lib/parse/getCostSupply.js

process ngrid electric utility bill data for use in the docparse system

/**
 * @param {String} text in the supply section text of the bill
 */
var num = require('num');
var inspect = require('eyespect').inspector({maxLength:20000000});
module.exports = function(text, callback) {
  text = text.replace(/\$/g,'');
  var cost = num(0);
  var cost_found = false;
  var cost_supply_variable = get_cost_supply_variable(text);
  if (cost_supply_variable) {
    cost_found = true;
    cost = cost.add(cost_supply_variable);
  }

  var cost_supply_two = get_cost_supply_two(text);
  if (cost_supply_two) {
    cost_found = true;
    cost = cost.add(cost_supply_two);
  }
  var cost_supply_three = get_cost_supply_three(text);
  if (cost_supply_three) {
    cost_found = true;
    cost = cost.add(cost_supply_three);
  }
  var cost_supply_four = get_cost_supply_four(text);
  if (cost_supply_four) {
    cost_found = true;
    cost = cost.add(cost_supply_four);
  }

  if (!cost_found) {
    inspect('********************************************************************************');
    console.log(text);
    var err = 'cost supply not found';
    return callback(err, null);
  }
  var cost_string = cost.toString();
  return callback(null, cost_string);
};


/**
 * Cost Supply variable text looks like
 "...
 Billing Period Jul 13, 2011 to Jul 21, 2011           Number of days in period 8
 Basic Service Variable              0.0722 x 45600 kWh                 3,292.32
 Total Supply Services          $ 11,414.00
 */
var get_cost_supply_variable = function(text) {
  var pattern = /Basic Service (?:Variable|Fixed).*?(-?\s?[\d\.]+)\s*$/mg;
  var cost = num(0);
  var cost_found = false;
  while(true ) {
    var matches = pattern.exec(text);
    if (!matches || matches.length !== 2) {
      break;
    }
    var match = matches[1].trim();
    cost = cost.add(match);
    cost_found = true;
  }
  if (!cost_found) {
    return null;
  }
  return cost.toString();
};


/**
 * Cost Supply Style two text looks like
 "...
 ...
 Electricity Supply                   0.0681 x 111200 kWh            7572.72
 Total Supply Services        $ 7572.72'
 */
var get_cost_supply_two = function(text) {
  var pattern = /Electricity Supply.*?(-?\s?[\d\.]+)\s*$/gm;
  var cost = num(0);
  var cost_found = false;
  while(true) {
    var matches = pattern.exec(text);
    if (!matches || matches.length !== 2) {
      break;
    }
    var match = matches[1].trim();
    cost = cost.add(match);
    cost_found = true;
  }
  if (!cost_found) {
    return null;
  }
  return cost.toString();
};
/**
 * Cost Supply Style two text looks like
 "...
 Energy Service 0.07250398 x 6082 kWh 440.97
 Total Supply Services        $ 440.97'
 */
var get_cost_supply_three = function(text) {
  var pattern = /Energy Service.*?(-?\s?[\d\.]+)\s*$/gm;
  var cost = num(0);
  var cost_found = false;
  while(true) {
    var matches = pattern.exec(text);
    if (!matches || matches.length !== 2) {
      break;
    }

    var match = matches[1].trim();
    cost = cost.add(match);
    cost_found = true;
  }
  if (!cost_found) {
    return null;
  }
  return cost.toString();
};



/**
 * Cost Supply Style four text looks like
 "...
 Energy Service 0.07250398 x 6082 kWh 440.97
 Total Supply Services        $ 440.97'
 */
var get_cost_supply_four = function(text) {
  var pattern = /Energy Charge.*?(-?\s?[\d\.]+)\s*$/gm;
  var cost = num(0);
  var cost_found = false;
  while(true) {
    var matches = pattern.exec(text);
    if (!matches || matches.length !== 2) {
      break;
    }
    var match = matches[1].trim();
    cost = cost.add(match);
    cost_found = true;
  }
  if (!cost_found) {
    return null;
  }
  return cost.toString();
};