sync graph code

graph.go

@@ -11,6 +11,7 @@ import (
 	"strings"
 
 	"git.smarteching.com/zeni/go-chart/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 	"github.com/julienschmidt/httprouter"
 )
 
@@ -44,7 +45,7 @@ func Graph(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
 					qtyl := len(labels)
 					qtyv := len(values)
 
-					// cjeck qty and equal values from url
+					// check qty and equal values from url
 					if qtyl < 2 {
 						fmt.Fprintf(w, "Missing captions in pie")
 						return
@@ -85,9 +86,9 @@ func Graph(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
 					qtyl := len(labels)
 					qtyv := len(values)
 
-					// cjeck qty and equal values from url
+					// check qty and equal values from url
 					if qtyl < 2 {
-						fmt.Fprintf(w, "Missing captions in pie")
+						fmt.Fprintf(w, "Missing captions in bar")
 						return
 					}
 					if qtyv != qtyl {
@@ -116,6 +117,83 @@ func Graph(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
 						fmt.Printf("Error rendering pie chart: %v\n", err)
 					}
 
+				// case multiple graph bar
+				case "mbar":
+
+					queryValues := r.URL.Query()
+					labels := strings.Split(queryValues.Get("l"), "|")
+					values := strings.Split(queryValues.Get("v"), "|")
+					options := strings.Split(queryValues.Get("o"), "|")
+
+					qtyl := len(labels)
+					qtyv := len(values)
+					qtyo := len(options)
+
+					// check qty and equal values from url
+					if qtyl < 2 {
+						fmt.Fprintf(w, "Missing captions in bar")
+						return
+					}
+					if qtyv < 2 {
+						fmt.Fprintf(w, "Missing values in bar")
+						return
+					}
+					if qtyo < 2 {
+						fmt.Fprintf(w, "Missing options in bar")
+						return
+					}
+
+					valuest := [][]float64{
+						{
+							2.0,
+							4.9,
+							7.0,
+							23.2,
+							25.6,
+							76.7,
+							135.6,
+							162.2,
+							32.6,
+						},
+						{
+							2.6,
+							5.9,
+							9.0,
+							26.4,
+							28.7,
+							70.7,
+							175.6,
+							182.2,
+							48.7,
+						},
+					}
+					p, err := charts.BarRender(
+						valuest,
+						charts.XAxisDataOptionFunc([]string{
+							"Apr",
+							"May",
+							"Jun",
+							"Jul",
+							"Aug",
+							"Sep",
+							"Oct",
+							"Nov",
+							"Dec",
+						}),
+						charts.LegendLabelsOptionFunc(labels, charts.PositionRight),
+					)
+					if err != nil {
+						panic(err)
+					}
+
+					buf, err := p.Bytes()
+
+					w.Header().Set("Content-Type", "image/png")
+					w.Write(buf)
+					if err != nil {
+						fmt.Printf("Error rendering pie chart: %v\n", err)
+					}
+
 				default:
 					fmt.Fprintf(w, "Unknown graph %s!\n", kindg)
 				}