init project

internal/utils/arrays.go

@@ -0,0 +1,20 @@
+package utils
+
+import (
+	"fmt"
+	"strings"
+)
+
+func ArrayToString(a []int64, delim string) string {
+	return strings.Trim(strings.Replace(fmt.Sprint(a), " ", delim, -1), "[]")
+}
+
+func Contains(slice []string, item string) bool {
+	set := make(map[string]struct{}, len(slice))
+	for _, s := range slice {
+		set[s] = struct{}{}
+	}
+
+	_, ok := set[item]
+	return ok
+}

internal/utils/currency.go

@@ -0,0 +1,43 @@
+package utils
+
+import (
+	"fmt"
+	"math/rand"
+	"strconv"
+	"strings"
+	"time"
+)
+
+func FormatCurrency(value float64) string {
+	currencyStr := strconv.FormatFloat(value, 'f', 2, 64)
+	split := strings.Split(currencyStr, ".")
+	n := len(split[0])
+	if n <= 3 {
+		return fmt.Sprintf("Rp %s,%s", split[0], split[1])
+	}
+	var result []string
+	for i := 0; i < n; i += 3 {
+		end := n - i
+		start := end - 3
+		if start < 0 {
+			start = 0
+		}
+		result = append([]string{split[0][start:end]}, result...)
+	}
+	currencyStr = strings.Join(result, ".")
+	return fmt.Sprintf("Rp %s,%s", currencyStr, split[1])
+}
+
+const charset = "abcdefghijklmnopqrstuvwxyz" +
+	"ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+
+var seededRand *rand.Rand = rand.New(
+	rand.NewSource(time.Now().UnixNano()))
+
+func GenerateRandomString(length int) string {
+	b := make([]byte, length)
+	for i := range b {
+		b[i] = charset[seededRand.Intn(len(charset))]
+	}
+	return string(b)
+}

internal/utils/currency_test.go

@@ -0,0 +1,36 @@
+package utils
+
+import "testing"
+
+func TestFormatCurrency(t *testing.T) {
+	type args struct {
+		value float64
+	}
+	tests := []struct {
+		name string
+		args args
+		want string
+	}{
+		{
+			name: "hundred",
+			args: args{
+				value: 626000,
+			},
+			want: "Rp 626.000,00",
+		},
+		{
+			name: "million",
+			args: args{
+				value: 62603300,
+			},
+			want: "Rp 62.603.300,00",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := FormatCurrency(tt.args.value); got != tt.want {
+				t.Errorf("FormatCurrency() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}

internal/utils/generator/string-generator.go

@@ -0,0 +1,36 @@
+package generator
+
+import (
+	"fmt"
+	"math/rand"
+	"strconv"
+	"time"
+
+	"github.com/google/uuid"
+)
+
+func MedicalRecordNumberRand() string {
+	return RandStringRunes(10)
+}
+
+func RandStringRunes(n int) string {
+	rand.Seed(time.Now().UnixNano()) // seed the random number generator
+
+	const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	b := make([]byte, n)
+	for i := range b {
+		b[i] = letterBytes[rand.Intn(len(letterBytes))]
+	}
+
+	return string(b)
+}
+
+// format -> <uuid>-<time unix>
+func GenerateFileName() string {
+	return fmt.Sprintf("%v-%v", GenerateUUID(), strconv.Itoa(int(time.Now().Unix())))
+}
+
+func GenerateUUID() string {
+	id := uuid.New()
+	return id.String()
+}