feat: adds charts for categories

internal/dirtoexcel/dirtoexcel.go

@@ -45,7 +45,7 @@ func (c Categories) Insert(company, value string) error {
 	case "ALDI", "EDEKA":
 		c["Food"] = append(c["Food"], Value{Company: company, Value: fValue})
 	case "AMAZON":
-		c["Non-Food"] = append(c["Non-Food"], Value{Company: company, Value: fValue})
+		c["NonFood"] = append(c["NonFood"], Value{Company: company, Value: fValue})
 	default:
 		c["Other"] = append(c["Other"], Value{Company: company, Value: fValue})
 	}
@@ -134,18 +134,22 @@ func Create(out, dir string) error {
 			m[i.Company] += i.Value
 		}
 
-		count := 1
+		length := 0
 
 		for k, v := range m {
-			if err := f.SetCellStr(cat, fmt.Sprintf("A%d", count), k); err != nil {
+			if err := f.SetCellStr(cat, fmt.Sprintf("A%d", length+1), k); err != nil {
 				return fmt.Errorf("failed to set cell: %w", err)
 			}
 
-			if err := f.SetCellFloat(cat, fmt.Sprintf("B%d", count), v, 2, 64); err != nil {
+			if err := f.SetCellFloat(cat, fmt.Sprintf("B%d", length+1), v, 2, 64); err != nil {
 				return fmt.Errorf("failed to set cell: %w", err)
 			}
 
-			count += 1
+			length += 1
+		}
+
+		if err := createCategoryChart(cat, length, f); err != nil {
+			return fmt.Errorf("failed to create category chart: %w", err)
 		}
 
 	}
@@ -158,3 +162,38 @@ func Create(out, dir string) error {
 
 	return nil
 }
+
+func createCategoryChart(category string, length int, f *excelize.File) error {
+	if err := f.AddChart(category, "C1", &excelize.Chart{
+		Type: excelize.Doughnut,
+		Series: []excelize.ChartSeries{
+			{
+				Name:       "Amount",
+				Categories: fmt.Sprintf("%s!A1:A%d", category, length),
+				Values:     fmt.Sprintf("%s!B1:B%d", category, length),
+			},
+		},
+		Format: excelize.GraphicOptions{
+			OffsetX: 15,
+			OffsetY: 10,
+		},
+		Legend: excelize.ChartLegend{
+			Position: "right",
+		},
+		Title: excelize.ChartTitle{
+			Name: category,
+		},
+		PlotArea: excelize.ChartPlotArea{
+			ShowCatName:     false,
+			ShowLeaderLines: false,
+			ShowPercent:     true,
+			ShowSerName:     false,
+			ShowVal:         false,
+		},
+		ShowBlanksAs: "zero",
+	}); err != nil {
+		return fmt.Errorf("failed to create chart: %w", err)
+	}
+
+	return nil
+}

internal/dirtoexcel/dirtoexcel_test.go

@@ -29,6 +29,7 @@ func TestCreate(t *testing.T) {
 				"bma-zon_12.34_bar.jpg",
 				"aldi_10.98.jpg",
 				"aldi_10.00.jpg",
+				"edeka_10.11.jpg",
 			},
 			map[string][]want{
 				"Food": {
@@ -36,8 +37,12 @@ func TestCreate(t *testing.T) {
 						"ALDI",
 						"20.98",
 					},
+					{
+						"EDEKA",
+						"10.11",
+					},
 				},
-				"Non-Food": {
+				"NonFood": {
 					{
 						"AMAZON",
 						"12.34",
@@ -112,5 +117,5 @@ func TestCategoriesInsert(t *testing.T) {
 	err := m.Insert("amazon", "11.11")
 	is.NoErr(err)
 
-	is.Equal(dirtoexcel.Categories{"Non-Food": []dirtoexcel.Value{{"AMAZON", 11.11}}}, m)
+	is.Equal(dirtoexcel.Categories{"NonFood": []dirtoexcel.Value{{"AMAZON", 11.11}}}, m)
 }