<?php

namespace Illuminate\Validation\Rules;

use Illuminate\Contracts\Validation\DataAwareRule;
use Illuminate\Contracts\Validation\Rule;
use Illuminate\Contracts\Validation\ValidatorAwareRule;
use Illuminate\Support\Arr;
use Illuminate\Support\Facades\Validator;
use Illuminate\Support\Str;
use Illuminate\Support\Traits\Conditionable;
use Illuminate\Support\Traits\Macroable;
use InvalidArgumentException;

class File implements Rule, DataAwareRule, ValidatorAwareRule
{
    use Conditionable, Macroable;

    /**
     * The MIME types that the given file should match. This array may also contain file extensions.
     *
     * @var array
     */
    protected $allowedMimetypes = [];

    /**
     * The extensions that the given file should match.
     *
     * @var array
     */
    protected $allowedExtensions = [];

    /**
     * The minimum size in kilobytes that the file can be.
     *
     * @var null|int
     */
    protected $minimumFileSize = null;

    /**
     * The maximum size in kilobytes that the file can be.
     *
     * @var null|int
     */
    protected $maximumFileSize = null;

    /**
     * An array of custom rules that will be merged into the validation rules.
     *
     * @var array
     */
    protected $customRules = [];

    /**
     * The error message after validation, if any.
     *
     * @var array
     */
    protected $messages = [];

    /**
     * The data under validation.
     *
     * @var array
     */
    protected $data;

    /**
     * The validator performing the validation.
     *
     * @var \Illuminate\Validation\Validator
     */
    protected $validator;

    /**
     * The callback that will generate the "default" version of the file rule.
     *
     * @var string|array|callable|null
     */
    public static $defaultCallback;

    /**
     * Set the default callback to be used for determining the file default rules.
     *
     * If no arguments are passed, the default file rule configuration will be returned.
     *
     * @param  static|callable|null  $callback
     * @return static|null
     */
    public static function defaults($callback = null)
    {
        if (is_null($callback)) {
            return static::default();
        }

        if (! is_callable($callback) && ! $callback instanceof static) {
            throw new InvalidArgumentException('The given callback should be callable or an instance of '.static::class);
        }

        static::$defaultCallback = $callback;
    }

    /**
     * Get the default configuration of the file rule.
     *
     * @return static
     */
    public static function default()
    {
        $file = is_callable(static::$defaultCallback)
            ? call_user_func(static::$defaultCallback)
            : static::$defaultCallback;

        return $file instanceof Rule ? $file : new self();
    }

    /**
     * Limit the uploaded file to only image types.
     *
     * @return ImageFile
     */
    public static function image()
    {
        return new ImageFile();
    }

    /**
     * Limit the uploaded file to the given MIME types or file extensions.
     *
     * @param  string|array<int, string>  $mimetypes
     * @return static
     */
    public static function types($mimetypes)
    {
        return tap(new static(), fn ($file) => $file->allowedMimetypes = (array) $mimetypes);
    }

    /**
     * Limit the uploaded file to the given file extensions.
     *
     * @param  string|array<int, string>  $extensions
     * @return $this
     */
    public function extensions($extensions)
    {
        $this->allowedExtensions = (array) $extensions;

        return $this;
    }

    /**
     * Indicate that the uploaded file should be exactly a certain size in kilobytes.
     *
     * @param  string|int  $size
     * @return $this
     */
    public function size($size)
    {
        $this->minimumFileSize = $this->toKilobytes($size);
        $this->maximumFileSize = $this->minimumFileSize;

        return $this;
    }

    /**
     * Indicate that the uploaded file should be between a minimum and maximum size in kilobytes.
     *
     * @param  string|int  $minSize
     * @param  string|int  $maxSize
     * @return $this
     */
    public function between($minSize, $maxSize)
    {
        $this->minimumFileSize = $this->toKilobytes($minSize);
        $this->maximumFileSize = $this->toKilobytes($maxSize);

        return $this;
    }

    /**
     * Indicate that the uploaded file should be no less than the given number of kilobytes.
     *
     * @param  string|int  $size
     * @return $this
     */
    public function min($size)
    {
        $this->minimumFileSize = $this->toKilobytes($size);

        return $this;
    }

    /**
     * Indicate that the uploaded file should be no more than the given number of kilobytes.
     *
     * @param  string|int  $size
     * @return $this
     */
    public function max($size)
    {
        $this->maximumFileSize = $this->toKilobytes($size);

        return $this;
    }

    /**
     * Convert a potentially human-friendly file size to kilobytes.
     *
     * @param  string|int  $size
     * @return mixed
     */
    protected function toKilobytes($size)
    {
        if (! is_string($size)) {
            return $size;
        }

        $value = floatval($size);

        return round(match (true) {
            Str::endsWith($size, 'kb') => $value * 1,
            Str::endsWith($size, 'mb') => $value * 1_000,
            Str::endsWith($size, 'gb') => $value * 1_000_000,
            Str::endsWith($size, 'tb') => $value * 1_000_000_000,
            default => throw new InvalidArgumentException('Invalid file size suffix.'),
        });
    }

    /**
     * Specify additional validation rules that should be merged with the default rules during validation.
     *
     * @param  string|array  $rules
     * @return $this
     */
    public function rules($rules)
    {
        $this->customRules = array_merge($this->customRules, Arr::wrap($rules));

        return $this;
    }

    /**
     * Determine if the validation rule passes.
     *
     * @param  string  $attribute
     * @param  mixed  $value
     * @return bool
     */
    public function passes($attribute, $value)
    {
        $this->messages = [];

        $validator = Validator::make(
            $this->data,
            [$attribute => $this->buildValidationRules()],
            $this->validator->customMessages,
            $this->validator->customAttributes
        );

        if ($validator->fails()) {
            return $this->fail($validator->messages()->all());
        }

        return true;
    }

    /**
     * Build the array of underlying validation rules based on the current state.
     *
     * @return array
     */
    protected function buildValidationRules()
    {
        $rules = ['file'];

        $rules = array_merge($rules, $this->buildMimetypes());

        if (! empty($this->allowedExtensions)) {
            $rules[] = 'extensions:'.implode(',', array_map('strtolower', $this->allowedExtensions));
        }

        $rules[] = match (true) {
            is_null($this->minimumFileSize) && is_null($this->maximumFileSize) => null,
            is_null($this->maximumFileSize) => "min:{$this->minimumFileSize}",
            is_null($this->minimumFileSize) => "max:{$this->maximumFileSize}",
            $this->minimumFileSize !== $this->maximumFileSize => "between:{$this->minimumFileSize},{$this->maximumFileSize}",
            default => "size:{$this->minimumFileSize}",
        };

        return array_merge(array_filter($rules), $this->customRules);
    }

    /**
     * Separate the given mimetypes from extensions and return an array of correct rules to validate against.
     *
     * @return array
     */
    protected function buildMimetypes()
    {
        if (count($this->allowedMimetypes) === 0) {
            return [];
        }

        $rules = [];

        $mimetypes = array_filter(
            $this->allowedMimetypes,
            fn ($type) => str_contains($type, '/')
        );

        $mimes = array_diff($this->allowedMimetypes, $mimetypes);

        if (count($mimetypes) > 0) {
            $rules[] = 'mimetypes:'.implode(',', $mimetypes);
        }

        if (count($mimes) > 0) {
            $rules[] = 'mimes:'.implode(',', $mimes);
        }

        return $rules;
    }

    /**
     * Adds the given failures, and return false.
     *
     * @param  array|string  $messages
     * @return bool
     */
    protected function fail($messages)
    {
        $messages = collect(Arr::wrap($messages))->map(function ($message) {
            return $this->validator->getTranslator()->get($message);
        })->all();

        $this->messages = array_merge($this->messages, $messages);

        return false;
    }

    /**
     * Get the validation error message.
     *
     * @return array
     */
    public function message()
    {
        return $this->messages;
    }

    /**
     * Set the current validator.
     *
     * @param  \Illuminate\Contracts\Validation\Validator  $validator
     * @return $this
     */
    public function setValidator($validator)
    {
        $this->validator = $validator;

        return $this;
    }

    /**
     * Set the current data under validation.
     *
     * @param  array  $data
     * @return $this
     */
    public function setData($data)
    {
        $this->data = $data;

        return $this;
    }
}

.NET Framework

Project Request

ProjectC

Vehicle Maintenance

Movie Navigator

Customers Exchange

ATM

.NET Core

Mail Daemon

Custom

Buns of code

PHP

Mediabox

Loan Castle

Content Management

Laravel

Phone Check

Frontend

Forex Wall

Business projects

Certification Center

Amerikas Auto

Pet projects

Geolocation Assistant

Web Dynamics

Blackball

Good old times

DOS Clock

BrainOut

Airport Administrator

Atomizer

Mediabox