update: directory structure

advfuncs/logparser/functional/chartwriter.go

@@ -0,0 +1,46 @@
+package main
+
+import (
+	"io"
+	"sort"
+	"strconv"
+
+	c "github.com/wcharczuk/go-chart"
+)
+
+func chartWriter(w io.Writer) outputFn {
+	return func(res []result) error {
+		return chartWrite(w, res)
+	}
+}
+
+func chartWrite(w io.Writer, res []result) error {
+	sort.Slice(res, func(i, j int) bool {
+		return res[i].domain > res[j].domain
+	})
+
+	donut := c.DonutChart{
+		Title: "Total Visits Per Domain",
+		TitleStyle: c.Style{
+			FontSize:  35,
+			Show:      true,
+			FontColor: c.ColorAlternateGreen,
+		},
+		Width:  1920,
+		Height: 800,
+	}
+
+	for _, r := range res {
+		v := c.Value{
+			Label: r.domain + r.page + ": " + strconv.Itoa(r.visits),
+			Value: float64(r.visits),
+			Style: c.Style{
+				FontSize: 14,
+			},
+		}
+
+		donut.Values = append(donut.Values, v)
+	}
+
+	return donut.Render(c.SVG, w)
+}