Implemented frontend

+ Graph Generation as images for frontend performance
+ A new decent style

lib/web/api.go

@@ -2,6 +2,7 @@ package web
 
 import (
 	"net/http"
+	"strconv"
 	"time"
 
 	"github.com/gin-gonic/gin"
@@ -12,6 +13,44 @@ import (
 func setupApi(r *gin.Engine) {
 	api := r.Group("/api/v1")
 
+	api.GET("/disks/:diskid/chart", func(ctx *gin.Context) {
+		diskIDString := ctx.Param("diskid")
+		diskId, err := strconv.Atoi(diskIDString)
+		if err != nil {
+			ctx.AbortWithStatusJSON(400, gin.H{
+				"error":   err.Error(),
+				"message": "Invalid Disk ID",
+			})
+
+			return
+		}
+
+		graphData, err := svc.GetDiskGraphImage(diskId, nil, nil)
+		if err != nil {
+			ctx.AbortWithStatusJSON(500, gin.H{
+				"error":   err.Error(),
+				"message": "Graph generation issue",
+			})
+
+			return
+		}
+
+		// Set the content type header
+		ctx.Writer.Header().Set("Content-Type", "image/png")
+
+		// Write the image data to the response
+		ctx.Writer.WriteHeader(http.StatusOK)
+		_, err = graphData.WriteTo(ctx.Writer)
+		if err != nil {
+			ctx.AbortWithStatusJSON(500, gin.H{
+				"error":   err.Error(),
+				"message": "Write error",
+			})
+
+			return
+		}
+	})
+
 	api.GET("/disks", func(ctx *gin.Context) {
 
 		olderThan := time.Now().Add(time.Minute * time.Duration(10) * -1)