Simulation Details page layout Update

server/routes/stats.go

@@ -0,0 +1,43 @@
+package routes
+
+import (
+	"database/sql"
+	"encoding/json"
+	"net/http"
+	"os"
+	"path/filepath"
+)
+
+func (rt *Router) GetStats(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+
+	var totalSims int
+	err := rt.DB.QueryRow("SELECT COUNT(*) FROM simulations").Scan(&totalSims)
+	if err != nil {
+		totalSims = 0
+	}
+
+	var fastestSimID sql.NullInt64
+	err = rt.DB.QueryRow("SELECT id FROM simulations WHERE total_time IS NOT NULL ORDER BY total_time ASC LIMIT 1").Scan(&fastestSimID)
+
+	var totalSize int64 = 0
+	filepath.Walk("../results", func(path string, info os.FileInfo, err error) error {
+		if err == nil && !info.IsDir() {
+			totalSize += info.Size()
+		}
+		return nil
+	})
+
+	var fastest *int
+	if fastestSimID.Valid {
+		f := int(fastestSimID.Int64)
+		fastest = &f
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(map[string]interface{}{
+		"total_simulations":   totalSims,
+		"fastest_sim_id":      fastest,
+		"total_storage_bytes": totalSize,
+	})
+}