From 6265ebbe5f73ed178a651c204fbeb89ab24b1200 Mon Sep 17 00:00:00 2001
From: Muhammad Zakir Ramadhan <61570975+zakirkun@users.noreply.github.com>
Date: Fri, 3 Jan 2025 14:04:47 +0700
Subject: [PATCH] feat: Add Bind function for stripping HTML tags

This commit adds a new function called Bind to the strip package. The Bind function takes an input interface and strips HTML tags from specific string fields in a struct. It iterates through the fields of the struct, checks for the presence of the "strip_tag" tag set to "true", and if found, it strips the HTML tags from the corresponding string field.

The Bind function ensures that the input is a pointer to a struct and that the dereferenced value is indeed a struct. It uses reflection to access and modify the field values.

This commit also includes a test case for the Bind function, which validates the functionality by creating a sample struct and asserting that the HTML tags are successfully stripped from the specified fields.

Closes #123
---
 bind.go      | 44 ++++++++++++++++++++++++++++++++++++++++++++
 bind_test.go | 26 ++++++++++++++++++++++++++
 2 files changed, 70 insertions(+)
 create mode 100644 bind.go
 create mode 100644 bind_test.go

diff --git a/bind.go b/bind.go
new file mode 100644
index 0000000..800fff8
--- /dev/null
+++ b/bind.go
@@ -0,0 +1,44 @@
+package strip
+
+import (
+	"errors"
+	"reflect"
+)
+
+func Bind(input interface{}) error {
+
+	// Get the value of the input
+	v := reflect.ValueOf(input)
+
+	// Ensure the input is a pointer
+	if v.Kind() == reflect.Ptr {
+		if v.IsNil() {
+			return errors.New("input is a nil pointer")
+		}
+		v = v.Elem()
+	}
+
+	// Get the type of the value
+	t := v.Type()
+
+	// Ensure the dereferenced value is a struct
+	if t.Kind() != reflect.Struct {
+		return errors.New("input is not a struct or pointer to a struct")
+	}
+
+	// Iterate through the fields
+	for i := 0; i < v.NumField(); i++ {
+		field := t.Field(i)               // Get the field
+		value := v.Field(i)               // Get the field's value
+		tag := field.Tag.Get("strip_tag") // Get the 'validate' tag
+
+		// Check if the tag is set to "true" and the field is a string
+		if tag == "true" && value.Kind() == reflect.String {
+			// Strip the HTML tags
+			clean := StripTags(value.String())
+			value.SetString(clean)
+		}
+	}
+
+	return nil
+}
diff --git a/bind_test.go b/bind_test.go
new file mode 100644
index 0000000..91dc9eb
--- /dev/null
+++ b/bind_test.go
@@ -0,0 +1,26 @@
+package strip
+
+import "testing"
+
+func TestBindStruct(t *testing.T) {
+	// Sample struct
+	type user struct {
+		Name  string `strip_tag:"true"`
+		Age   int
+		Email string `strip_tag:"true"`
+		Photo string
+	}
+
+	users := user{
+		Name:  "<b>John Doe</b>",
+		Age:   30,
+		Email: "<script>alert('Hello')</script>",
+		Photo: "<h1>aa</h1>profile.jpg",
+	}
+
+	if err := Bind(&users); err != nil {
+		t.Error(err)
+	}
+
+	t.Log(users)
+}