React Form Validation Component

reactformvalidation.jsx

import { useForm, Controller } from "react-hook-form";
import { useEffect } from "react";

// Define validation rules
const validationRules = {
  required: {
    value: true,
    message: "This field is required.",
  },
  email: {
    value: /^[^\s@]+@[^\s@]+\.[^\s@]+$/,
    message: "Invalid email format.",
  },
  phone: {
    value: /^\(?\d{3}\)?[-.\s]?\d{3}[-.\s]?\d{4}$/,
    message: "Invalid phone number format.",
  },
  min: (minValue) => ({
    value: minValue,
    message: `Minimum ${minValue} characters required.`,
  }),
};

// Define the custom form component
const CustomInput = ({
  name,
  type = "text",
  placeholder = "",
  required = false,
  rules = "",
  sampleText = "",
  options = [],
  selectPlaceholder = "Please select an option",
}) => {
  const {
    control,
    register,
    formState: { errors },
  } = useForm();

  // Function to dynamically set rules based on type
  const getDefaultRulesForType = (type) => {
    switch (type) {
      case "email":
        return validationRules.email;
      case "tel":
        return validationRules.phone;
      case "text":
        return validationRules.min(2);
      default:
        return {};
    }
  };

  const combinedRules = {
    ...getDefaultRulesForType(type),
    ...rules,
    ...(required && validationRules.required),
  };

  return (
    <div className="mb-4">
      {type === "select" ? (
        <Controller
          name={name}
          control={control}
          rules={combinedRules}
          render={({ field }) => (
            <select
              {...field}
              className="w-full border border-gray-300 dark:border-gray-600 rounded-md px-3 py-2 focus:outline-none focus:ring-2 focus:ring-indigo-500 dark:bg-gray-700 dark:text-gray-300 dark:focus:ring-indigo-300"
            >
              <option value="" disabled>
                {selectPlaceholder}
              </option>
              {options.map((option, index) => (
                <option key={index} value={option.value}>
                  {option.label}
                </option>
              ))}
            </select>
          )}
        />
      ) : (
        <input
          type={type}
          {...register(name, combinedRules)}
          placeholder={placeholder}
          className="w-full border border-gray-300 dark:border-gray-600 rounded-md px-3 py-2 focus:outline-none focus:ring-2 focus:ring-indigo-500 dark:bg-gray-700 dark:text-gray-300 dark:focus:ring-indigo-300"
        />
      )}
      {errors[name] && (
        <span className="text-red-400 text-sm italic">
          {errors[name]?.message}
          {sampleText && ` Example: ${sampleText}`}
        </span>
      )}
    </div>
  );
};

export default CustomInput;