counter add anotations

server/server.go

@@ -9,6 +9,7 @@ import (
 	"net/http"
 	"os"
 	"os/signal"
+	"strconv"
 	"time"
 
 	"github.com/golang-migrate/migrate/v4"
@@ -23,6 +24,14 @@ var conf config.Config
 
 var templates *template.Template
 
+var funcMap = template.FuncMap{
+	"sub": sub,
+}
+
+func sub(a, b int64) string {
+	return strconv.FormatInt(a-b, 10)
+}
+
 var db *pgxpool.Pool
 
 func Start(_conf config.Config, tmplFS embed.FS, staticFS embed.FS, migrationsFS embed.FS) {
@@ -33,7 +42,9 @@ func Start(_conf config.Config, tmplFS embed.FS, staticFS embed.FS, migrationsFS
 	fs := http.FileServer(staticServer)
 
 	// Templates
-	t, err := template.ParseFS(tmplFS, "tmpl/*.tmpl")
+	t := template.New("")
+	t.Funcs(funcMap)
+	t, err := t.ParseFS(tmplFS, "tmpl/*.tmpl")
 	if err != nil {
 		panic(fmt.Errorf("Parsing templates: %w", err))
 	}

tmpl/index.tmpl

@@ -1,7 +1,18 @@
 {{template "head"}}
 <div id="wierd-flex" class="counter">
-    {{range $c := .Counter}}
+    {{ $l := len .Counter }}
+    {{range $i, $c := .Counter}}
     <img class="counter-image" alt="{{$c}}" src="/static/counter/{{$c}}.gif">
+        {{ $n := sub $l $i }}
+        {{ if $n eq 4 }}
+            KB
+        {{ else if $n eq 8 }}
+            MB
+        {{ else if $n eq 12 }}
+            GB
+        {{ else if $n eq 16 }}
+            TB
+        {{end}}
     {{end}}
 </div>
 <h2>Workers</h2>