# Custom Validator

A lightweight and customizable field validation library using Joi, inspired by Laravel's validation rules. Simplifies data validation with intuitive rule-based syntax.

## Installation

npm install burhan-req-validator


## Usage

    const { validateFields } = require('burhan-req-validator');
    const data = {
	    channel_id: "12345",
	    tags: ["sports", "music"],
	    isActive: true
    };
    
    const rules = {
	    channel_id: "required|string",
	    tags: "array|items:string",
	    isActive: "required|boolean"
    };  
    const { error } = validateFields(data, rules);
    if (error) {
    console.log("Validation Error:", error.details.map(detail => detail.message));
    } else {
	    console.log("Validation Passed!");
    }

## Complex Validation

    const { validateFields } = require('burhan-req-validator');

    const data = { 
        username: "JohnDoe", 
        age: 25, 
        tags: ["sports", "music"], 
        profile: { bio: "Hello world!" }, 
        birthDate: "1990-01-01", 
        isActive: true 
    };
    
    const rules = { 
        username: "required|string|min:3|max:20", 
        age: "required|integer|min:18", 
        tags: "array|items:string", 
        profile: "object", 
        birthDate: "required|date", 
        isActive: "required|boolean" 
    };
    
    const { error } = validateFields(data, rules);
    if (error) {
        console.log("Validation Error:", error.details.map(detail => detail.message));
    } else {
        console.log("Validation Passed!");
    }
    
      

## Roles
Supported rules:

-   **required**: Field is required.
-   **string**: Validates that the field is a string.
-   **email**: Validates that the field is a valid email address.
-   **max:<value>**: Specifies the maximum length or value.
-   **min:<value>**: Specifies the minimum length or value.
-   **integer**: Validates that the field is an integer.
-   **number**: Validates that the field is a number.
-   **boolean**: Validates that the field is a boolean (`true` or `false`).
-   **date**: Validates that the field is a valid date.
-   **object**: Validates that the field is an object.
-   **array**: Validates that the field is an array.
    -   **items:<type>**: Specifies the type of elements within the array (e.g., `items:string`, `items:number`).
-   **nullable**: Allows the field to be `null`.
-   **regex:<pattern>**: Validates the field against a custom regular expression.