gromer

#golang#htmx#ssr

git clone https://git.pyrossh.dev/gromer

gromer is a framework and cli to build multipage web apps in golang using htmx and alpinejs.

1656741 — Peter John 2021-12-29T01:06:02+05:30 
add utils

Generated files not shown: go.sum

Files changed (3) hide show
  1. go.mod +1 -0
  2. utils.go +76 -0
  3. utils_test.go +105 -0
go.mod CHANGED
@@ -12,6 +12,7 @@ require (
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  github.com/google/uuid v1.3.0
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  github.com/gorilla/mux v1.8.0
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  github.com/iancoleman/strcase v0.2.0
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+ github.com/imdario/mergo v0.3.12 // indirect
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  github.com/lib/pq v1.10.4
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  github.com/markbates/inflect v1.0.4
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  github.com/microcosm-cc/bluemonday v1.0.15 // indirect
utils.go ADDED
@@ -0,0 +1,76 @@
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+ package gromer
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+
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+ import (
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+ "reflect"
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+ "regexp"
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+ "strings"
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+ "time"
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+
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+ "github.com/go-playground/validator/v10"
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+ "github.com/iancoleman/strcase"
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+ "github.com/imdario/mergo"
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+ )
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+
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+ var Validator = validator.New()
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+ var ValidatorErrorMap = map[string]string{
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+ "required": "is required",
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+ }
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+ var upperRegex = regexp.MustCompile("^[^a-z]*$")
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+
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+ type timeTransformer struct {
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+ }
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+
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+ func (t timeTransformer) Transformer(typ reflect.Type) func(dst, src reflect.Value) error {
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+ if typ == reflect.TypeOf(time.Time{}) {
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+ return func(dst, src reflect.Value) error {
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+ if dst.CanSet() {
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+ srcResult := src.MethodByName("IsZero").Call([]reflect.Value{})
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+ if !srcResult[0].Bool() {
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+ dst.Set(src)
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+ }
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+ }
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+ return nil
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+ }
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+ }
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+ return nil
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+ }
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+
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+ func Merge(dst interface{}, src interface{}) error {
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+ err := mergo.Merge(dst, src, mergo.WithOverwriteWithEmptyValue)
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+ if err != nil {
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+ return err
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+ }
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+ return Validate(dst)
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+ }
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+
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+ func Validate(dst interface{}) error {
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+ return Validator.Struct(dst)
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+ }
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+
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+ func RegisterValidation(k, msg string, validate func(fl validator.FieldLevel) bool) {
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+ ValidatorErrorMap[k] = msg
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+ Validator.RegisterValidation(k, validate)
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+ }
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+
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+ func GetValidationError(err validator.ValidationErrors) map[string]string {
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+ emap := map[string]string{}
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+ for _, e := range err {
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+ parts := strings.Split(e.StructNamespace(), ".")
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+ lowerParts := []string{}
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+ for _, p := range parts[1:] {
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+ if upperRegex.MatchString(p) {
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+ lowerParts = append(lowerParts, strings.ToLower(p))
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+ } else {
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+ lowerParts = append(lowerParts, strcase.ToLowerCamel(p))
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+ }
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+ }
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+ k := strings.Join(lowerParts, ".")
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+ errorMsg, ok := ValidatorErrorMap[e.Tag()]
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+ if ok {
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+ emap[k] = errorMsg
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+ } else {
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+ emap[k] = "is not valid" // e.Error()
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+ }
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+ }
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+ return emap
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+ }
utils_test.go ADDED
@@ -0,0 +1,105 @@
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+ package gromer
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+
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+ import (
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+ "regexp"
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+ "testing"
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+ "time"
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+
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+ "github.com/go-playground/validator/v10"
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+ "github.com/stretchr/testify/assert"
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+ )
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+
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+ func init() {
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+ pinCodeRegex := regexp.MustCompile("^[1-9]{1}[0-9]{2}\\s{0,1}[0-9]{3}$")
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+ RegisterValidation("pincode", "is not in valid format", func(fl validator.FieldLevel) bool {
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+ return pinCodeRegex.MatchString(fl.Field().String())
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+ })
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+ }
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+
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+ func TestUpperRegex(t *testing.T) {
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+ assert.Equal(t, true, upperRegex.MatchString("PAN"))
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+ assert.Equal(t, false, upperRegex.MatchString("PaN"))
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+ }
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+
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+ type Todo struct {
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+ ID string `json:"id" validate:"required"`
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+ Pincode string `json:"pincode" validate:"required,pincode"`
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+ PAN string `json:"pan" validate:"required"`
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+ CreatedAt time.Time `json:"createdAt"`
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+ }
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+
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+ func TestValidator(t *testing.T) {
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+ assert.NoError(t, Validator.Var("560001", "pincode"))
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+ assert.EqualError(t, Validator.Var("ABCD", "pincode"), "Key: '' Error:Field validation for '' failed on the 'pincode' tag")
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+ }
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+
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+ func TestValidate(t *testing.T) {
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+ todo := &Todo{
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+ ID: "123",
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+ Pincode: "",
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+ PAN: "",
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+ }
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+ err := Validate(todo)
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+ assert.EqualError(t, err, "Key: 'Todo.Pincode' Error:Field validation for 'Pincode' failed on the 'required' tag\nKey: 'Todo.PAN' Error:Field validation for 'PAN' failed on the 'required' tag")
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+ validationErrors := err.(validator.ValidationErrors)
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+ assert.Equal(t, GetValidationError(validationErrors), map[string]string{
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+ "pincode": "is required",
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+ "pan": "is required",
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+ })
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+
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+ todo.Pincode = "AWS"
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+ err = Validate(todo)
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+ assert.EqualError(t, err, "Key: 'Todo.Pincode' Error:Field validation for 'Pincode' failed on the 'pincode' tag\nKey: 'Todo.PAN' Error:Field validation for 'PAN' failed on the 'required' tag")
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+ validationErrors = err.(validator.ValidationErrors)
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+ assert.EqualValues(t, map[string]string{
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+ "pincode": "is not in valid format",
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+ "pan": "is required",
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+ }, GetValidationError(validationErrors))
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+ }
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+
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+ type Note struct {
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+ ID string `json:"id"`
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+ Text string `json:"text"`
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+ CreatedAt time.Time `json:"createdAt"`
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+ }
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+
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+ func TestMerge(t *testing.T) {
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+ note := &Note{
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+ ID: "",
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+ Text: "",
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+ CreatedAt: time.Time{},
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+ }
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+ err := Merge(note, &Note{
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+ ID: "1",
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+ Text: "1",
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+ CreatedAt: time.Date(2020, 10, 10, 0, 0, 0, 0, time.UTC),
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+ })
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+ assert.NoError(t, err)
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+ assert.EqualValues(t, &Note{
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+ ID: "1",
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+ Text: "1",
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+ CreatedAt: time.Date(2020, 10, 10, 0, 0, 0, 0, time.UTC),
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+ }, note)
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+ err = Merge(note, &Note{
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+ ID: "2",
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+ Text: "2",
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+ CreatedAt: time.Date(2020, 11, 11, 0, 0, 0, 0, time.UTC),
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+ })
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+ assert.NoError(t, err)
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+ assert.EqualValues(t, &Note{
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+ ID: "2",
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+ Text: "2",
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+ CreatedAt: time.Date(2020, 11, 11, 0, 0, 0, 0, time.UTC),
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+ }, note)
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+ err = Merge(note, &Note{
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+ ID: "2",
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+ Text: "",
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+ CreatedAt: time.Time{},
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+ })
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+ assert.NoError(t, err)
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+ assert.EqualValues(t, &Note{
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+ ID: "2",
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+ Text: "",
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+ CreatedAt: time.Time{},
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+ }, note)
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+ }