gluon covid tracker for Oregon

covid.js

(function() {
  setup()
  return {name:"covid"}
})

var alert_channel = '#pdxbots'
var locations
var data_date
var oregon

function setup() {
  //jhu_csse(bot.admin_channel)
  oregon = oregon_oha()
  bot.say(bot.admin_channel, "corona oregon count set to pos "+oregon.positive+" neg "+oregon.negative)
}

function go(msg) {
  if (msg.method == "clocktower") {
    var now = new Date(Date.parse(msg.params.time))
    if (now.getMinutes() == 0) {
      var new_oregon = oregon_oha()
      var total = oregon.positive + oregon.negative
      var new_total = new_oregon.positive + new_oregon.negative
      if (new_total > total) {
        var diff_total = new_total - total
        var diff_pos = new_oregon.positive - oregon.positive
        var diff_pcent = ((diff_pos / diff_total) * 100).toFixed(1)
        var diff_deaths = new_oregon.deaths - oregon.deaths
        var hosp_pcent =(oregon.hosp/new_oregon.positive * 100).toFixed(1)
        var death_string = ""
        //for(var i=0; i < diff_deaths; i++) { death_string += "⚰️ " }
        //bot.say(bot.admin_channel, "corona debug "+JSON.stringify(new_oregon)+" - "+JSON.stringify(new_oregon))
        bot.say("#portlandor", "Oregon processed "+diff_total+" covid tests yesterday"+
                " with "+diff_pcent+"%/"+diff_pos+" new positives")
                //" and "+death_string)
      }
      oregon = new_oregon
    }
  }
  
  if (msg.method == "irc.privmsg") {
    var match = /^!(corona|covid|covid19)(\s+(.*))?/.exec(msg.params.message)
    if(match) {
      if (match[3]) {
        jhu_csse(bot.admin_channel)
        bot.say(msg.params.channel, "searching corona data "+locations.length+" locations. last fetched "+data_date)
        var region = match[2].trim()
        var report = location_search(region)
        if(report) {
          bot.say(msg.params.channel, [report.country, report.province].join(', ')+": "+JSON.stringify(report.latest))
        } else {
          bot.say(msg.params.channel, region+" not found")
        }
      } else {
        var oha = oregon_oha()
        bot.say(msg.params.channel, "OregonHealthAuthority "+JSON.stringify(oha))
      }
    }
  }
}

function oregon_oha() {
  var oha = {}
  var url = 'https://govstatus.egov.com/OR-OHA-COVID-19'
  var html = http.get(url).replace(/\n/g,"").replace(/\r/g,"")
  var match =  / of (\d+\/\d+\/\d+[, ]+\d+:\d+\s+....)/.exec(html)
  if (match) {
    oha.date = match[1]
  }
  var positive = findint(html, "Positive tests")
  if(positive) {
    oha.positive = positive
  }
  var negative = findint(html, "Negative tests")
  if(negative) {
    oha.negative = negative
  }
  var deaths = findint(html, "Total deaths")
  if(deaths) {
    oha.deaths = deaths
  }
  var hosp = findint(html, "Yes")
  if(hosp) {
    oha.hosp = hosp
  }
  return oha
}

function findint(html, word) {
  var exp = word + '.*?>((,?\\d)+)[ *]?<'
  var re = new RegExp(exp, "i")
  var match =  re.exec(html)
  if (match) {
    var value = match[1].replace(/,/g,"")
    return parseInt(value)
  }
}

function location_search(region) {
  var winner
  locations.forEach(function(l){
    var term = region.toLowerCase()
    if (l.country.toLowerCase() == term ||
        l.country_code.toLowerCase() == term ||
        l.province.toLowerCase() == term 
       ) {
      winner = l
    }
  })
  return winner
}

function jhu_csse(channel) {
  var url = 'https://coronavirus-tracker-api.herokuapp.com/v2/locations'
  bot.say(channel, "loading "+url)
  var json = http.get(url)
  if(json.length == 0) {
    bot.say(channel, "warning: empty response from coronavirus tracker api")
  }
  locations = JSON.parse(json).locations
  data_date = new Date()
}