{{define "title"}}Inbucket Status{{end}}

{{define "script"}}
<script src="/public/jquery.sparkline.min.js" type="text/javascript" charset="utf-8"></script>
<script>
  jQuery.ajaxSetup({ cache: false })
  flashOn = jQuery.Color("rgba(255,255,0,1)")
  flashOff = jQuery.Color("rgba(255,255,0,0)")
  dataHist = new Object()

  function timeFilter(seconds) {
    if (seconds < 60) {
      return seconds + " seconds"
      } else if (seconds < 3600) {
      return (seconds/60).toFixed(0) + " minute(s)"
      } else if (seconds < 86400) {
      return (seconds/3600).toFixed(1) + " hour(s)"
    }
    return (seconds/86400).toFixed(0) + " day(s)"
  }

  function sizeFilter(bytes) {
    if (bytes < 1024) {
      return bytes + " bytes"
      } else if (bytes < 1048576) {
      return (bytes/1024).toFixed(0) + " KB"
      } else if (bytes < 1073741824) {
      return (bytes/1048576).toFixed(2) + " MB"
    }
    return (bytes/1073741824).toFixed(2) + " GB"
  }

  function numberFilter(x) {
    var parts = x.toString().split(".");
    parts[0] = parts[0].replace(/\B(?=(\d{3})+(?!\d))/g, ",");
    return parts.join(".");
  }

  function appendHistory(name, value) {
    var h = dataHist[name]
    if (! h) {
      h = new Array(0)
    }
    // Prevent array from growing
    if (h.length >= 60) {
      h = h.slice(1,60)
    }
    h.push(parseInt(value))
    dataHist[name] = h
    el = $('#s-' + name)
    if (el) {
      el.sparkline(dataHist[name])
    }
  }

  // Show spikes for numbers that only increase
  function setHistoryOfActivity(name, value) {
    var h = value.split(",")
    var prev = parseInt(h[0])
    for (i=0; i<h.length; i++) {
      var t = parseInt(h[i])
      h[i] = t-prev
      prev = t
    }
    // First value will always be zero
    if (h.length > 0) {
      h = h.slice(1)
    }
    el = $('#s-' + name)
    if (el) {
      el.sparkline(h)
    }
  }

  // Show up/down for numbers that can decrease
  function setHistoryOfCount(name, value) {
    var h = value.split(",")
    el = $('#s-' + name)
    if (el) {
      el.sparkline(h)
    }
  }

  function metric(name, value, filter, chartable) {
    if (chartable) {
      appendHistory(name, value)
    }
    if (filter) {
      value = filter(value)
    }
    var el = $('#m-' + name)
    if (el.text() != value) {
      el.text(value)
      el.css('background-color', flashOn)
      el.animate({ backgroundColor: flashOff }, 1500)
    }
  }

  function displayMetrics(data, textStatus, jqXHR) {
    // Non graphing
    metric('uptime', data.uptime, timeFilter, false)
    metric('retentionScanCompleted', data.retention.SecondsSinceScanCompleted, timeFilter, false)
    metric('retentionPeriod', data.retention.Period, timeFilter, false)

    // JavaScript history
    metric('memstatsSys', data.memstats.Sys, sizeFilter, true)
    metric('memstatsHeapAlloc', data.memstats.HeapAlloc, sizeFilter, true)
    metric('memstatsHeapSys', data.memstats.HeapSys, sizeFilter, true)
    metric('memstatsHeapObjects', data.memstats.HeapObjects, numberFilter, true)
    metric('smtpConnectsCurrent', data.smtp.ConnectsCurrent, numberFilter, true)

    // Server-side history
    metric('smtpReceivedTotal', data.smtp.ReceivedTotal, numberFilter, false)
    setHistoryOfActivity('smtpReceivedTotal', data.smtp.ReceivedHist)
    metric('smtpConnectsTotal', data.smtp.ConnectsTotal, numberFilter, false)
    setHistoryOfActivity('smtpConnectsTotal', data.smtp.ConnectsHist)
    metric('smtpWarnsTotal', data.smtp.WarnsTotal, numberFilter, false)
    setHistoryOfActivity('smtpWarnsTotal', data.smtp.WarnsHist)
    metric('smtpErrorsTotal', data.smtp.ErrorsTotal, numberFilter, false)
    setHistoryOfActivity('smtpErrorsTotal', data.smtp.ErrorsHist)
    metric('retentionDeletesTotal', data.retention.DeletesTotal, numberFilter, false)
    setHistoryOfActivity('retentionDeletesTotal', data.retention.DeletesHist)
    metric('retainedCurrent', data.retention.RetainedCurrent, numberFilter, false)
    setHistoryOfCount('retainedCurrent', data.retention.RetainedHist)
  }

  function loadMetrics() {
    // jQuery.getJSON( url [, data] [, success(data, textStatus, jqXHR)] )
    jQuery.getJSON('/debug/vars', null, displayMetrics)
  }

  function aboutInit() {
    loadMetrics()
    setInterval(loadMetrics, 10000)
  }

  $(document).ready(aboutInit)
</script>
{{end}}

{{define "menu"}}
<div id="logo">
  <h1><a href="/">inbucket</a></h1>
  <h2>email testing service</h2>
</div>
{{end}}

{{define "content"}}
<h2>Inbucket Status</h2>

<p>Metrics are polled every 10 seconds.  Inbucket does not keep history for the
10 minute graphs, but your web browser will accumulate the data over time.</p>

<div class="box">
  <h3>Configuration</h3>
  <table class="metrics">
    <tr>
      <th>Version:</th>
      <td><span>{{.version}}, built on {{.buildDate}}</span></td>
    </tr>
    <tr>
      <th>SMTP Listener:</th>
      <td><span>{{.smtpListener}}</span></td>
    </tr>
    <tr>
      <th>POP3 Listener:</th>
      <td><span>{{.pop3Listener}}</span></td>
    </tr>
    <tr>
      <th>HTTP Listener:</th>
      <td><span>{{.webListener}}</span></td>
    </tr>
  </table>
  <p class="last">&nbsp;</p>
</div>
<div class="box">
  <h3>General Metrics</h3>
  <table class="metrics">
    <tr>
      <th>Uptime:</th>
      <td class="number"><span id="m-uptime">.</span></td>
    </tr>
    <tr>
      <th>System Memory:</th>
      <td class="number"><span id="m-memstatsSys">.</span></td>
      <td class="sparkline"><span id="s-memstatsSys">.</span></td>
      <td>(10min)</td>
    </tr>
    <tr>
      <th>Heap Size:</th>
      <td class="number"><span id="m-memstatsHeapSys">.</span></td>
      <td class="sparkline"><span id="s-memstatsHeapSys">.</span></td>
      <td>(10min)</td>
    </tr>
    <tr>
      <th>Heap In-Use:</th>
      <td class="number"><span id="m-memstatsHeapAlloc">.</span></td>
      <td class="sparkline"><span id="s-memstatsHeapAlloc">.</span></td>
      <td>(10min)</td>
    </tr>
    <tr>
      <th>Heap # Objects:</th>
      <td class="number"><span id="m-memstatsHeapObjects">.</span></td>
      <td class="sparkline"><span id="s-memstatsHeapObjects">.</span></td>
      <td>(10min)</td>
    </tr>
  </table>
  <p class="last">&nbsp;</p>
</div>
<div class="box">
  <h3>SMTP Metrics</h3>
  <table class="metrics">
    <tr>
      <th>Current Connections:</th>
      <td class="number"><span id="m-smtpConnectsCurrent">.</span></td>
      <td class="sparkline"><span id="s-smtpConnectsCurrent">.</span></td>
      <td>(10min)</td>
    </tr>
    <tr>
      <th>Total Connections:</th>
      <td class="number"><span id="m-smtpConnectsTotal">.</span></td>
      <td class="sparkline"><span id="s-smtpConnectsTotal">.</span></td>
      <td>(60min)</td>
    </tr>
    <tr>
      <th>Messages Received:</th>
      <td class="number"><span id="m-smtpReceivedTotal">.</span></td>
      <td class="sparkline"><span id="s-smtpReceivedTotal">.</span></td>
      <td>(60min)</td>
    </tr>
    <tr>
      <th>Errors Logged:</th>
      <td class="number"><span id="m-smtpErrorsTotal">.</span></td>
      <td class="sparkline"><span id="s-smtpErrorsTotal"></span></td>
      <td>(60min)</td>
    </tr>
    <tr>
      <th>Warnings Logged:</th>
      <td class="number"><span id="m-smtpWarnsTotal">.</span></td>
      <td class="sparkline"><span id="s-smtpWarnsTotal"></span></td>
      <td>(60min)</td>
    </tr>
  </table>
  <p class="last">&nbsp;</p>
</div>
<div class="box">
  <h3>Data Store Metrics</h3>
  <table class="metrics">
    <tr>
      <th>Retention Period:</th>
      <td colspan="3">
        {{if .retentionMinutes}}
        <span id="m-retentionPeriod">.</span>
        {{else}}
        Disabled
        {{end}}
      </td>
    </tr>
    <tr>
      <th>Retention Scan:</th>
      <td colspan="3">
        {{if .retentionMinutes}}
        Completed <span id="m-retentionScanCompleted">.</span> ago
        {{else}}
        Disabled
        {{end}}
      </td>
    </tr>
    <tr>
      <th>Retention Deletes:</th>
      <td class="number"><span id="m-retentionDeletesTotal">.</span></td>
      <td class="sparkline"><span id="s-retentionDeletesTotal"></span></td>
      <td>(60min)</td>
    </tr>
    <tr>
      <th>Currently Retained:</th>
      <td class="number"><span id="m-retainedCurrent">.</span></td>
      <td class="sparkline"><span id="s-retainedCurrent"></span></td>
      <td>(60min)</td>
    </tr>
  </table>
  <p class="last">&nbsp;</p>
</div>
{{end}}