feat: add form

internal/pkg/form/conform.go

@@ -0,0 +1,22 @@
+package form
+
+import (
+	"context"
+
+	"github.com/go-playground/mold/v4"
+	"github.com/go-playground/mold/v4/modifiers"
+)
+
+var conform = NewConform()
+
+func NewConform() *mold.Transformer {
+	return modifiers.New()
+}
+
+func ConformStruct(v interface{}) error {
+	return ConformStructWithContext(context.TODO(), v)
+}
+
+func ConformStructWithContext(ctx context.Context, v interface{}) error {
+	return conform.Struct(ctx, v)
+}

internal/pkg/form/encoding.go

@@ -0,0 +1,28 @@
+package form
+
+import (
+	"net/url"
+
+	"github.com/go-playground/form/v4"
+)
+
+var (
+	decoder = NewDecoder()
+	encoder = NewEncoder()
+)
+
+func NewDecoder() *form.Decoder {
+	return form.NewDecoder()
+}
+
+func Decode(values url.Values, v interface{}) error {
+	return decoder.Decode(v, values)
+}
+
+func NewEncoder() *form.Encoder {
+	return form.NewEncoder()
+}
+
+func Encode(v interface{}) (values url.Values, err error) {
+	return encoder.Encode(v)
+}

internal/pkg/form/form.go

@@ -0,0 +1,29 @@
+package form
+
+import "net/url"
+
+func SafeQuery(values url.Values, v interface{}) error {
+	if err := Decode(values, v); err != nil {
+		return err
+	}
+
+	if err := ConformStruct(v); err != nil {
+		return err
+	}
+
+	if err := ValidateStruct(v); err != nil {
+		return err
+	}
+	return nil
+}
+
+func SafeStruct(v interface{}) error {
+	if err := ConformStruct(v); err != nil {
+		return err
+	}
+
+	if err := ValidateStruct(v); err != nil {
+		return err
+	}
+	return nil
+}

internal/pkg/form/scrub.go

@@ -0,0 +1,24 @@
+package form
+
+import (
+	"context"
+
+	"github.com/go-playground/mold/v4"
+	"github.com/go-playground/mold/v4/scrubbers"
+)
+
+var (
+	scrub = NewScrubbers()
+)
+
+func NewScrubbers() *mold.Transformer {
+	return scrubbers.New()
+}
+
+func ScrubStruct(v interface{}) error {
+	return ScrubStructWithContext(context.TODO(), v)
+}
+
+func ScrubStructWithContext(ctx context.Context, v interface{}) error {
+	return scrub.Struct(ctx, v)
+}

internal/pkg/form/validate.go

@@ -0,0 +1,121 @@
+package form
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+
+	"github.com/go-playground/locales/en"
+	"github.com/go-playground/locales/zh"
+	ut "github.com/go-playground/universal-translator"
+	"github.com/go-playground/validator/v10"
+
+	zhtrans "github.com/go-playground/validator/v10/translations/zh"
+	// entrans "github.com/go-playground/validator/v10/translations/en"
+)
+
+var (
+	translator = NewValidateTranslator()
+	validate   = NewValidate()
+)
+
+type FieldError struct {
+	Field string               `json:"field"`
+	Error string               `json:"error"`
+	Value string               `json:"value"`
+	Raw   validator.FieldError `json:"-"`
+}
+
+func (err FieldError) String() string {
+	return fmt.Sprintf("%s:%s", err.Field, err.Error)
+}
+
+type FieldsError []*FieldError
+
+func (errs FieldsError) Error() string {
+	var msg []string
+	for _, err := range errs {
+		msg = append(msg, err.String())
+	}
+	return strings.Join(msg, ";")
+}
+
+func init() {
+	// en := en.New() //英文翻译器
+	// zh := zh.New() //中文翻译器
+
+	// // 第一个参数是必填，如果没有其他的语言设置，就用这第一个
+	// // 后面的参数是支持多语言环境（
+	// // uni := ut.New(en, en) 也是可以的
+	// // uni := ut.New(en, zh, tw)
+	// uni := ut.New(en, zh)
+
+	// translator, ok := uni.GetTranslator("zh") //获取需要的语言
+	// if !ok {
+	// 	panic("translator not found")
+	// }
+
+	// validate := validator.New()
+	// validate.RegisterTagNameFunc(func(field reflect.StructField) string {
+	// 	label := field.Tag.Get("label")
+	// 	if label == "" {
+	// 		return field.Name
+	// 	}
+	// 	return label
+	// })
+
+	zhtrans.RegisterDefaultTranslations(validate, translator)
+}
+
+func NewValidateTranslator() ut.Translator {
+	en := en.New() //英文翻译器
+	zh := zh.New() //中文翻译器
+
+	// 第一个参数是必填，如果没有其他的语言设置，就用这第一个
+	// 后面的参数是支持多语言环境（
+	// uni := ut.New(en, en) 也是可以的
+	// uni := ut.New(en, zh, tw)
+	uni := ut.New(en, zh)
+
+	var ok bool
+	trans, ok := uni.GetTranslator("zh") //获取需要的语言
+	if !ok {
+		panic("form validation translator not found")
+	}
+	return trans
+}
+
+func NewValidate() *validator.Validate {
+	v := validator.New()
+	v.RegisterTagNameFunc(func(field reflect.StructField) string {
+		label := field.Tag.Get("label")
+		if label == "" {
+			return field.Name
+		}
+		return label
+	})
+	return v
+}
+
+func ValidateStruct(v interface{}) FieldsError {
+	if err := validate.Struct(v); err != nil {
+		validationErrs, ok := err.(validator.ValidationErrors)
+		if ok {
+			var fieldsErr FieldsError
+			for _, ve := range validationErrs {
+				fieldsErr = append(fieldsErr, NewFieldError(ve, translator))
+			}
+			return fieldsErr
+		}
+	}
+	return nil
+}
+
+func NewFieldError(err validator.FieldError, unt ut.Translator) *FieldError {
+	return &FieldError{
+		Field: err.StructField(),
+		Error: err.Translate(unt),
+		Raw:   err,
+		Value: fmt.Sprintf("%v", err.Value()),
+	}
+}