feat: make age dynamic

internal/handlers/main.go

@@ -2,14 +2,27 @@
 package handlers
 
 import (
+	"math"
 	"net/http"
 	"text/template"
+	"time"
 
 	"github.com/StevanFreeborn/links.stevanfreeborn.com/internal/assets"
 )
 
+const DAYS_IN_YEAR = 365
+const HOURS_IN_DAY = 24
+
+var birthday time.Time = time.Date(1993, time.April, 21, 0, 0, 0, 0, time.UTC)
+
+type IndexViewModel struct {
+	Age float64
+}
+
 func Index(w http.ResponseWriter, r *http.Request) {
-	// Links coming in external JSON data
+	// TODO: Links coming in external JSON data
+	// this could be static file in the repo
+	// or it could be fetched
 	// { link: "link", text: "text", "icon": "icon" }
 
 	t, err := template.ParseFS(assets.Templates, "templates/index.gohtml")
@@ -19,7 +32,13 @@ func Index(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	t.Execute(w, nil)
+	age := time.Since(birthday).Hours() / HOURS_IN_DAY / DAYS_IN_YEAR
+
+	viewModel := IndexViewModel{
+		Age: math.Floor(age),
+	}
+
+	t.Execute(w, viewModel)
 }
 
 func CSS(w http.ResponseWriter, r *http.Request) {