Saved Stat

server/stats.go

@@ -24,6 +24,7 @@ type StatsDisplay struct {
 	Size            []int
 	Duration        []int
 	Count           []int
+	Saved           []int
 }
 
 type ChartData struct {
@@ -337,6 +338,14 @@ func handleStats(w http.ResponseWriter, r *http.Request) {
 		duration = 0
 	}
 
+	var saved int
+	err = db.QueryRow(r.Context(),
+		`SELECT (SUM(old_size) - COALESCE(SUM(size), 0)) AS saved
+		FROM files WHERE ($1 = -1 OR files.library_id = $1) AND status = $2 AND old_size NOT NULL`, id, constants.FILE_STATUS_EXISTS).Scan(&saved)
+	if err != nil {
+		saved = 0
+	}
+
 	buf := bytes.Buffer{}
 	err = templates.ExecuteTemplate(&buf, constants.STATS_TEMPLATE_NAME, StatsDisplay{
 		Libraries:       libraries,
@@ -344,6 +353,7 @@ func handleStats(w http.ResponseWriter, r *http.Request) {
 		Size:            splitInt(size),
 		Count:           splitInt(count),
 		Duration:        splitInt(duration),
+		Saved:           splitInt(saved),
 		Charts:          data,
 	})
 	if err != nil {

tmpl/stats.tmpl

@@ -44,6 +44,23 @@
         {{end}}
     {{end}}
 </div>
+<h4>Saved</h4>
+<div class="counter">
+    {{ $l := len .Saved }}
+    {{range $i, $c := .Saved}}
+    <img class="counter-image" alt="{{$c}}" src="/static/counter/{{$c}}.gif">
+        {{ $n := sub $l $i }}
+        {{ if eq $n 4 }}
+            KB
+        {{ else if eq $n 7 }}
+            MB
+        {{ else if eq $n 10 }}
+            GB
+        {{ else if eq $n 13 }}
+            TB
+        {{end}}
+    {{end}}
+</div>
 <div class="stats">
     {{range $c := .Charts}}
         {{$c.Element}} {{$c.Script}}