<?php

namespace Illuminate\Validation;

use BadMethodCallException;
use Illuminate\Contracts\Container\Container;
use Illuminate\Contracts\Translation\Translator;
use Illuminate\Contracts\Validation\DataAwareRule;
use Illuminate\Contracts\Validation\ImplicitRule;
use Illuminate\Contracts\Validation\Rule as RuleContract;
use Illuminate\Contracts\Validation\Validator as ValidatorContract;
use Illuminate\Contracts\Validation\ValidatorAwareRule;
use Illuminate\Support\Arr;
use Illuminate\Support\Fluent;
use Illuminate\Support\MessageBag;
use Illuminate\Support\Str;
use Illuminate\Support\ValidatedInput;
use InvalidArgumentException;
use RuntimeException;
use stdClass;
use Symfony\Component\HttpFoundation\File\UploadedFile;

class Validator implements ValidatorContract
{
    use Concerns\FormatsMessages,
        Concerns\ValidatesAttributes;

    /**
     * The Translator implementation.
     *
     * @var \Illuminate\Contracts\Translation\Translator
     */
    protected $translator;

    /**
     * The container instance.
     *
     * @var \Illuminate\Contracts\Container\Container
     */
    protected $container;

    /**
     * The Presence Verifier implementation.
     *
     * @var \Illuminate\Validation\PresenceVerifierInterface
     */
    protected $presenceVerifier;

    /**
     * The failed validation rules.
     *
     * @var array
     */
    protected $failedRules = [];

    /**
     * Attributes that should be excluded from the validated data.
     *
     * @var array
     */
    protected $excludeAttributes = [];

    /**
     * The message bag instance.
     *
     * @var \Illuminate\Support\MessageBag
     */
    protected $messages;

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

    /**
     * The initial rules provided.
     *
     * @var array
     */
    protected $initialRules;

    /**
     * The rules to be applied to the data.
     *
     * @var array
     */
    protected $rules;

    /**
     * The current rule that is validating.
     *
     * @var string
     */
    protected $currentRule;

    /**
     * The array of wildcard attributes with their asterisks expanded.
     *
     * @var array
     */
    protected $implicitAttributes = [];

    /**
     * The callback that should be used to format the attribute.
     *
     * @var callable|null
     */
    protected $implicitAttributesFormatter;

    /**
     * The cached data for the "distinct" rule.
     *
     * @var array
     */
    protected $distinctValues = [];

    /**
     * All of the registered "after" callbacks.
     *
     * @var array
     */
    protected $after = [];

    /**
     * The array of custom error messages.
     *
     * @var array
     */
    public $customMessages = [];

    /**
     * The array of fallback error messages.
     *
     * @var array
     */
    public $fallbackMessages = [];

    /**
     * The array of custom attribute names.
     *
     * @var array
     */
    public $customAttributes = [];

    /**
     * The array of custom displayable values.
     *
     * @var array
     */
    public $customValues = [];

    /**
     * Indicates if the validator should stop on the first rule failure.
     *
     * @var bool
     */
    protected $stopOnFirstFailure = false;

    /**
     * Indicates that unvalidated array keys should be excluded, even if the parent array was validated.
     *
     * @var bool
     */
    public $excludeUnvalidatedArrayKeys = false;

    /**
     * All of the custom validator extensions.
     *
     * @var array
     */
    public $extensions = [];

    /**
     * All of the custom replacer extensions.
     *
     * @var array
     */
    public $replacers = [];

    /**
     * The validation rules that may be applied to files.
     *
     * @var string[]
     */
    protected $fileRules = [
        'Between',
        'Dimensions',
        'Extensions',
        'File',
        'Image',
        'Max',
        'Mimes',
        'Mimetypes',
        'Min',
        'Size',
    ];

    /**
     * The validation rules that imply the field is required.
     *
     * @var string[]
     */
    protected $implicitRules = [
        'Accepted',
        'AcceptedIf',
        'Declined',
        'DeclinedIf',
        'Filled',
        'Missing',
        'MissingIf',
        'MissingUnless',
        'MissingWith',
        'MissingWithAll',
        'Present',
        'PresentIf',
        'PresentUnless',
        'PresentWith',
        'PresentWithAll',
        'Required',
        'RequiredIf',
        'RequiredIfAccepted',
        'RequiredIfDeclined',
        'RequiredUnless',
        'RequiredWith',
        'RequiredWithAll',
        'RequiredWithout',
        'RequiredWithoutAll',
    ];

    /**
     * The validation rules which depend on other fields as parameters.
     *
     * @var string[]
     */
    protected $dependentRules = [
        'After',
        'AfterOrEqual',
        'Before',
        'BeforeOrEqual',
        'Confirmed',
        'Different',
        'ExcludeIf',
        'ExcludeUnless',
        'ExcludeWith',
        'ExcludeWithout',
        'Gt',
        'Gte',
        'Lt',
        'Lte',
        'AcceptedIf',
        'DeclinedIf',
        'RequiredIf',
        'RequiredIfAccepted',
        'RequiredIfDeclined',
        'RequiredUnless',
        'RequiredWith',
        'RequiredWithAll',
        'RequiredWithout',
        'RequiredWithoutAll',
        'PresentIf',
        'PresentUnless',
        'PresentWith',
        'PresentWithAll',
        'Prohibited',
        'ProhibitedIf',
        'ProhibitedUnless',
        'Prohibits',
        'MissingIf',
        'MissingUnless',
        'MissingWith',
        'MissingWithAll',
        'Same',
        'Unique',
    ];

    /**
     * The validation rules that can exclude an attribute.
     *
     * @var string[]
     */
    protected $excludeRules = ['Exclude', 'ExcludeIf', 'ExcludeUnless', 'ExcludeWith', 'ExcludeWithout'];

    /**
     * The size related validation rules.
     *
     * @var string[]
     */
    protected $sizeRules = ['Size', 'Between', 'Min', 'Max', 'Gt', 'Lt', 'Gte', 'Lte'];

    /**
     * The numeric related validation rules.
     *
     * @var string[]
     */
    protected $numericRules = ['Numeric', 'Integer', 'Decimal'];

    /**
     * The default numeric related validation rules.
     *
     * @var string[]
     */
    protected $defaultNumericRules = ['Numeric', 'Integer', 'Decimal'];

    /**
     * The current placeholder for dots in rule keys.
     *
     * @var string
     */
    protected $dotPlaceholder;

    /**
     * The exception to throw upon failure.
     *
     * @var string
     */
    protected $exception = ValidationException::class;

    /**
     * The custom callback to determine if an exponent is within allowed range.
     *
     * @var callable|null
     */
    protected $ensureExponentWithinAllowedRangeUsing;

    /**
     * Create a new Validator instance.
     *
     * @param  \Illuminate\Contracts\Translation\Translator  $translator
     * @param  array  $data
     * @param  array  $rules
     * @param  array  $messages
     * @param  array  $attributes
     * @return void
     */
    public function __construct(Translator $translator, array $data, array $rules,
                                array $messages = [], array $attributes = [])
    {
        $this->dotPlaceholder = Str::random();

        $this->initialRules = $rules;
        $this->translator = $translator;
        $this->customMessages = $messages;
        $this->data = $this->parseData($data);
        $this->customAttributes = $attributes;

        $this->setRules($rules);
    }

    /**
     * Parse the data array, converting dots and asterisks.
     *
     * @param  array  $data
     * @return array
     */
    public function parseData(array $data)
    {
        $newData = [];

        foreach ($data as $key => $value) {
            if (is_array($value)) {
                $value = $this->parseData($value);
            }

            $key = str_replace(
                ['.', '*'],
                [$this->dotPlaceholder, '__asterisk__'],
                $key
            );

            $newData[$key] = $value;
        }

        return $newData;
    }

    /**
     * Replace the placeholders used in data keys.
     *
     * @param  array  $data
     * @return array
     */
    protected function replacePlaceholders($data)
    {
        $originalData = [];

        foreach ($data as $key => $value) {
            $originalData[$this->replacePlaceholderInString($key)] = is_array($value)
                        ? $this->replacePlaceholders($value)
                        : $value;
        }

        return $originalData;
    }

    /**
     * Replace the placeholders in the given string.
     *
     * @param  string  $value
     * @return string
     */
    protected function replacePlaceholderInString(string $value)
    {
        return str_replace(
            [$this->dotPlaceholder, '__asterisk__'],
            ['.', '*'],
            $value
        );
    }

    /**
     * Add an after validation callback.
     *
     * @param  callable|array|string  $callback
     * @return $this
     */
    public function after($callback)
    {
        if (is_array($callback) && ! is_callable($callback)) {
            foreach ($callback as $rule) {
                $this->after(method_exists($rule, 'after') ? $rule->after(...) : $rule);
            }

            return $this;
        }

        $this->after[] = fn () => $callback($this);

        return $this;
    }

    /**
     * Determine if the data passes the validation rules.
     *
     * @return bool
     */
    public function passes()
    {
        $this->messages = new MessageBag;

        [$this->distinctValues, $this->failedRules] = [[], []];

        // We'll spin through each rule, validating the attributes attached to that
        // rule. Any error messages will be added to the containers with each of
        // the other error messages, returning true if we don't have messages.
        foreach ($this->rules as $attribute => $rules) {
            if ($this->shouldBeExcluded($attribute)) {
                $this->removeAttribute($attribute);

                continue;
            }

            if ($this->stopOnFirstFailure && $this->messages->isNotEmpty()) {
                break;
            }

            foreach ($rules as $rule) {
                $this->validateAttribute($attribute, $rule);

                if ($this->shouldBeExcluded($attribute)) {
                    break;
                }

                if ($this->shouldStopValidating($attribute)) {
                    break;
                }
            }
        }

        foreach ($this->rules as $attribute => $rules) {
            if ($this->shouldBeExcluded($attribute)) {
                $this->removeAttribute($attribute);
            }
        }

        // Here we will spin through all of the "after" hooks on this validator and
        // fire them off. This gives the callbacks a chance to perform all kinds
        // of other validation that needs to get wrapped up in this operation.
        foreach ($this->after as $after) {
            $after();
        }

        return $this->messages->isEmpty();
    }

    /**
     * Determine if the data fails the validation rules.
     *
     * @return bool
     */
    public function fails()
    {
        return ! $this->passes();
    }

    /**
     * Determine if the attribute should be excluded.
     *
     * @param  string  $attribute
     * @return bool
     */
    protected function shouldBeExcluded($attribute)
    {
        foreach ($this->excludeAttributes as $excludeAttribute) {
            if ($attribute === $excludeAttribute ||
                Str::startsWith($attribute, $excludeAttribute.'.')) {
                return true;
            }
        }

        return false;
    }

    /**
     * Remove the given attribute.
     *
     * @param  string  $attribute
     * @return void
     */
    protected function removeAttribute($attribute)
    {
        Arr::forget($this->data, $attribute);
        Arr::forget($this->rules, $attribute);
    }

    /**
     * Run the validator's rules against its data.
     *
     * @return array
     *
     * @throws \Illuminate\Validation\ValidationException
     */
    public function validate()
    {
        throw_if($this->fails(), $this->exception, $this);

        return $this->validated();
    }

    /**
     * Run the validator's rules against its data.
     *
     * @param  string  $errorBag
     * @return array
     *
     * @throws \Illuminate\Validation\ValidationException
     */
    public function validateWithBag(string $errorBag)
    {
        try {
            return $this->validate();
        } catch (ValidationException $e) {
            $e->errorBag = $errorBag;

            throw $e;
        }
    }

    /**
     * Get a validated input container for the validated input.
     *
     * @param  array|null  $keys
     * @return \Illuminate\Support\ValidatedInput|array
     */
    public function safe(?array $keys = null)
    {
        return is_array($keys)
                ? (new ValidatedInput($this->validated()))->only($keys)
                : new ValidatedInput($this->validated());
    }

    /**
     * Get the attributes and values that were validated.
     *
     * @return array
     *
     * @throws \Illuminate\Validation\ValidationException
     */
    public function validated()
    {
        if (! $this->messages) {
            $this->passes();
        }

        throw_if($this->messages->isNotEmpty(), $this->exception, $this);

        $results = [];

        $missingValue = new stdClass;

        foreach ($this->getRules() as $key => $rules) {
            $value = data_get($this->getData(), $key, $missingValue);

            if ($this->excludeUnvalidatedArrayKeys &&
                in_array('array', $rules) &&
                $value !== null &&
                ! empty(preg_grep('/^'.preg_quote($key, '/').'\.+/', array_keys($this->getRules())))) {
                continue;
            }

            if ($value !== $missingValue) {
                Arr::set($results, $key, $value);
            }
        }

        return $this->replacePlaceholders($results);
    }

    /**
     * Validate a given attribute against a rule.
     *
     * @param  string  $attribute
     * @param  string  $rule
     * @return void
     */
    protected function validateAttribute($attribute, $rule)
    {
        $this->currentRule = $rule;

        [$rule, $parameters] = ValidationRuleParser::parse($rule);

        if ($rule === '') {
            return;
        }

        // First we will get the correct keys for the given attribute in case the field is nested in
        // an array. Then we determine if the given rule accepts other field names as parameters.
        // If so, we will replace any asterisks found in the parameters with the correct keys.
        if ($this->dependsOnOtherFields($rule)) {
            $parameters = $this->replaceDotInParameters($parameters);

            if ($keys = $this->getExplicitKeys($attribute)) {
                $parameters = $this->replaceAsterisksInParameters($parameters, $keys);
            }
        }

        $value = $this->getValue($attribute);

        // If the attribute is a file, we will verify that the file upload was actually successful
        // and if it wasn't we will add a failure for the attribute. Files may not successfully
        // upload if they are too large based on PHP's settings so we will bail in this case.
        if ($value instanceof UploadedFile && ! $value->isValid() &&
            $this->hasRule($attribute, array_merge($this->fileRules, $this->implicitRules))
        ) {
            return $this->addFailure($attribute, 'uploaded', []);
        }

        // If we have made it this far we will make sure the attribute is validatable and if it is
        // we will call the validation method with the attribute. If a method returns false the
        // attribute is invalid and we will add a failure message for this failing attribute.
        $validatable = $this->isValidatable($rule, $attribute, $value);

        if ($rule instanceof RuleContract) {
            return $validatable
                    ? $this->validateUsingCustomRule($attribute, $value, $rule)
                    : null;
        }

        $method = "validate{$rule}";

        $this->numericRules = $this->defaultNumericRules;

        if ($validatable && ! $this->$method($attribute, $value, $parameters, $this)) {
            $this->addFailure($attribute, $rule, $parameters);
        }
    }

    /**
     * Determine if the given rule depends on other fields.
     *
     * @param  string  $rule
     * @return bool
     */
    protected function dependsOnOtherFields($rule)
    {
        return in_array($rule, $this->dependentRules);
    }

    /**
     * Get the explicit keys from an attribute flattened with dot notation.
     *
     * E.g. 'foo.1.bar.spark.baz' -> [1, 'spark'] for 'foo.*.bar.*.baz'
     *
     * @param  string  $attribute
     * @return array
     */
    protected function getExplicitKeys($attribute)
    {
        $pattern = str_replace('\*', '([^\.]+)', preg_quote($this->getPrimaryAttribute($attribute), '/'));

        if (preg_match('/^'.$pattern.'/', $attribute, $keys)) {
            array_shift($keys);

            return $keys;
        }

        return [];
    }

    /**
     * Get the primary attribute name.
     *
     * For example, if "name.0" is given, "name.*" will be returned.
     *
     * @param  string  $attribute
     * @return string
     */
    protected function getPrimaryAttribute($attribute)
    {
        foreach ($this->implicitAttributes as $unparsed => $parsed) {
            if (in_array($attribute, $parsed, true)) {
                return $unparsed;
            }
        }

        return $attribute;
    }

    /**
     * Replace each field parameter which has an escaped dot with the dot placeholder.
     *
     * @param  array  $parameters
     * @return array
     */
    protected function replaceDotInParameters(array $parameters)
    {
        return array_map(function ($field) {
            return str_replace('\.', $this->dotPlaceholder, $field);
        }, $parameters);
    }

    /**
     * Replace each field parameter which has asterisks with the given keys.
     *
     * @param  array  $parameters
     * @param  array  $keys
     * @return array
     */
    protected function replaceAsterisksInParameters(array $parameters, array $keys)
    {
        return array_map(function ($field) use ($keys) {
            return vsprintf(str_replace('*', '%s', $field), $keys);
        }, $parameters);
    }

    /**
     * Determine if the attribute is validatable.
     *
     * @param  object|string  $rule
     * @param  string  $attribute
     * @param  mixed  $value
     * @return bool
     */
    protected function isValidatable($rule, $attribute, $value)
    {
        if (in_array($rule, $this->excludeRules)) {
            return true;
        }

        return $this->presentOrRuleIsImplicit($rule, $attribute, $value) &&
               $this->passesOptionalCheck($attribute) &&
               $this->isNotNullIfMarkedAsNullable($rule, $attribute) &&
               $this->hasNotFailedPreviousRuleIfPresenceRule($rule, $attribute);
    }

    /**
     * Determine if the field is present, or the rule implies required.
     *
     * @param  object|string  $rule
     * @param  string  $attribute
     * @param  mixed  $value
     * @return bool
     */
    protected function presentOrRuleIsImplicit($rule, $attribute, $value)
    {
        if (is_string($value) && trim($value) === '') {
            return $this->isImplicit($rule);
        }

        return $this->validatePresent($attribute, $value) ||
               $this->isImplicit($rule);
    }

    /**
     * Determine if a given rule implies the attribute is required.
     *
     * @param  object|string  $rule
     * @return bool
     */
    protected function isImplicit($rule)
    {
        return $rule instanceof ImplicitRule ||
               in_array($rule, $this->implicitRules);
    }

    /**
     * Determine if the attribute passes any optional check.
     *
     * @param  string  $attribute
     * @return bool
     */
    protected function passesOptionalCheck($attribute)
    {
        if (! $this->hasRule($attribute, ['Sometimes'])) {
            return true;
        }

        $data = ValidationData::initializeAndGatherData($attribute, $this->data);

        return array_key_exists($attribute, $data)
            || array_key_exists($attribute, $this->data);
    }

    /**
     * Determine if the attribute fails the nullable check.
     *
     * @param  string  $rule
     * @param  string  $attribute
     * @return bool
     */
    protected function isNotNullIfMarkedAsNullable($rule, $attribute)
    {
        if ($this->isImplicit($rule) || ! $this->hasRule($attribute, ['Nullable'])) {
            return true;
        }

        return ! is_null(Arr::get($this->data, $attribute, 0));
    }

    /**
     * Determine if it's a necessary presence validation.
     *
     * This is to avoid possible database type comparison errors.
     *
     * @param  string  $rule
     * @param  string  $attribute
     * @return bool
     */
    protected function hasNotFailedPreviousRuleIfPresenceRule($rule, $attribute)
    {
        return in_array($rule, ['Unique', 'Exists']) ? ! $this->messages->has($attribute) : true;
    }

    /**
     * Validate an attribute using a custom rule object.
     *
     * @param  string  $attribute
     * @param  mixed  $value
     * @param  \Illuminate\Contracts\Validation\Rule  $rule
     * @return void
     */
    protected function validateUsingCustomRule($attribute, $value, $rule)
    {
        $attribute = $this->replacePlaceholderInString($attribute);

        $value = is_array($value) ? $this->replacePlaceholders($value) : $value;

        if ($rule instanceof ValidatorAwareRule) {
            $rule->setValidator($this);
        }

        if ($rule instanceof DataAwareRule) {
            $rule->setData($this->data);
        }

        if (! $rule->passes($attribute, $value)) {
            $ruleClass = $rule instanceof InvokableValidationRule ?
                get_class($rule->invokable()) :
                get_class($rule);

            $this->failedRules[$attribute][$ruleClass] = [];

            $messages = $this->getFromLocalArray($attribute, $ruleClass) ?? $rule->message();

            $messages = $messages ? (array) $messages : [$ruleClass];

            foreach ($messages as $key => $message) {
                $key = is_string($key) ? $key : $attribute;

                $this->messages->add($key, $this->makeReplacements(
                    $message, $key, $ruleClass, []
                ));
            }
        }
    }

    /**
     * Check if we should stop further validations on a given attribute.
     *
     * @param  string  $attribute
     * @return bool
     */
    protected function shouldStopValidating($attribute)
    {
        $cleanedAttribute = $this->replacePlaceholderInString($attribute);

        if ($this->hasRule($attribute, ['Bail'])) {
            return $this->messages->has($cleanedAttribute);
        }

        if (isset($this->failedRules[$cleanedAttribute]) &&
            array_key_exists('uploaded', $this->failedRules[$cleanedAttribute])) {
            return true;
        }

        // In case the attribute has any rule that indicates that the field is required
        // and that rule already failed then we should stop validation at this point
        // as now there is no point in calling other rules with this field empty.
        return $this->hasRule($attribute, $this->implicitRules) &&
               isset($this->failedRules[$cleanedAttribute]) &&
               array_intersect(array_keys($this->failedRules[$cleanedAttribute]), $this->implicitRules);
    }

    /**
     * Add a failed rule and error message to the collection.
     *
     * @param  string  $attribute
     * @param  string  $rule
     * @param  array  $parameters
     * @return void
     */
    public function addFailure($attribute, $rule, $parameters = [])
    {
        if (! $this->messages) {
            $this->passes();
        }

        $attributeWithPlaceholders = $attribute;

        $attribute = $this->replacePlaceholderInString($attribute);

        if (in_array($rule, $this->excludeRules)) {
            return $this->excludeAttribute($attribute);
        }

        $this->messages->add($attribute, $this->makeReplacements(
            $this->getMessage($attributeWithPlaceholders, $rule), $attribute, $rule, $parameters
        ));

        $this->failedRules[$attribute][$rule] = $parameters;
    }

    /**
     * Add the given attribute to the list of excluded attributes.
     *
     * @param  string  $attribute
     * @return void
     */
    protected function excludeAttribute(string $attribute)
    {
        $this->excludeAttributes[] = $attribute;

        $this->excludeAttributes = array_unique($this->excludeAttributes);
    }

    /**
     * Returns the data which was valid.
     *
     * @return array
     */
    public function valid()
    {
        if (! $this->messages) {
            $this->passes();
        }

        return array_diff_key(
            $this->data, $this->attributesThatHaveMessages()
        );
    }

    /**
     * Returns the data which was invalid.
     *
     * @return array
     */
    public function invalid()
    {
        if (! $this->messages) {
            $this->passes();
        }

        $invalid = array_intersect_key(
            $this->data, $this->attributesThatHaveMessages()
        );

        $result = [];

        $failed = Arr::only(Arr::dot($invalid), array_keys($this->failed()));

        foreach ($failed as $key => $failure) {
            Arr::set($result, $key, $failure);
        }

        return $result;
    }

    /**
     * Generate an array of all attributes that have messages.
     *
     * @return array
     */
    protected function attributesThatHaveMessages()
    {
        return collect($this->messages()->toArray())->map(function ($message, $key) {
            return explode('.', $key)[0];
        })->unique()->flip()->all();
    }

    /**
     * Get the failed validation rules.
     *
     * @return array
     */
    public function failed()
    {
        return $this->failedRules;
    }

    /**
     * Get the message container for the validator.
     *
     * @return \Illuminate\Support\MessageBag
     */
    public function messages()
    {
        if (! $this->messages) {
            $this->passes();
        }

        return $this->messages;
    }

    /**
     * An alternative more semantic shortcut to the message container.
     *
     * @return \Illuminate\Support\MessageBag
     */
    public function errors()
    {
        return $this->messages();
    }

    /**
     * Get the messages for the instance.
     *
     * @return \Illuminate\Support\MessageBag
     */
    public function getMessageBag()
    {
        return $this->messages();
    }

    /**
     * Determine if the given attribute has a rule in the given set.
     *
     * @param  string  $attribute
     * @param  string|array  $rules
     * @return bool
     */
    public function hasRule($attribute, $rules)
    {
        return ! is_null($this->getRule($attribute, $rules));
    }

    /**
     * Get a rule and its parameters for a given attribute.
     *
     * @param  string  $attribute
     * @param  string|array  $rules
     * @return array|null
     */
    protected function getRule($attribute, $rules)
    {
        if (! array_key_exists($attribute, $this->rules)) {
            return;
        }

        $rules = (array) $rules;

        foreach ($this->rules[$attribute] as $rule) {
            [$rule, $parameters] = ValidationRuleParser::parse($rule);

            if (in_array($rule, $rules)) {
                return [$rule, $parameters];
            }
        }
    }

    /**
     * Get the data under validation.
     *
     * @return array
     */
    public function attributes()
    {
        return $this->getData();
    }

    /**
     * Get the data under validation.
     *
     * @return array
     */
    public function getData()
    {
        return $this->data;
    }

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

        $this->setRules($this->initialRules);

        return $this;
    }

    /**
     * Get the value of a given attribute.
     *
     * @param  string  $attribute
     * @return mixed
     */
    public function getValue($attribute)
    {
        return Arr::get($this->data, $attribute);
    }

    /**
     * Set the value of a given attribute.
     *
     * @param  string  $attribute
     * @param  mixed  $value
     * @return void
     */
    public function setValue($attribute, $value)
    {
        Arr::set($this->data, $attribute, $value);
    }

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

    /**
     * Get the validation rules with key placeholders removed.
     *
     * @return array
     */
    public function getRulesWithoutPlaceholders()
    {
        return collect($this->rules)
            ->mapWithKeys(fn ($value, $key) => [
                str_replace($this->dotPlaceholder, '\\.', $key) => $value,
            ])
            ->all();
    }

    /**
     * Set the validation rules.
     *
     * @param  array  $rules
     * @return $this
     */
    public function setRules(array $rules)
    {
        $rules = collect($rules)->mapWithKeys(function ($value, $key) {
            return [str_replace('\.', $this->dotPlaceholder, $key) => $value];
        })->toArray();

        $this->initialRules = $rules;

        $this->rules = [];

        $this->addRules($rules);

        return $this;
    }

    /**
     * Parse the given rules and merge them into current rules.
     *
     * @param  array  $rules
     * @return void
     */
    public function addRules($rules)
    {
        // The primary purpose of this parser is to expand any "*" rules to the all
        // of the explicit rules needed for the given data. For example the rule
        // names.* would get expanded to names.0, names.1, etc. for this data.
        $response = (new ValidationRuleParser($this->data))
                            ->explode(ValidationRuleParser::filterConditionalRules($rules, $this->data));

        $this->rules = array_merge_recursive(
            $this->rules, $response->rules
        );

        $this->implicitAttributes = array_merge(
            $this->implicitAttributes, $response->implicitAttributes
        );
    }

    /**
     * Add conditions to a given field based on a Closure.
     *
     * @param  string|array  $attribute
     * @param  string|array  $rules
     * @param  callable  $callback
     * @return $this
     */
    public function sometimes($attribute, $rules, callable $callback)
    {
        $payload = new Fluent($this->data);

        foreach ((array) $attribute as $key) {
            $response = (new ValidationRuleParser($this->data))->explode([$key => $rules]);

            $this->implicitAttributes = array_merge($response->implicitAttributes, $this->implicitAttributes);

            foreach ($response->rules as $ruleKey => $ruleValue) {
                if ($callback($payload, $this->dataForSometimesIteration($ruleKey, ! str_ends_with($key, '.*')))) {
                    $this->addRules([$ruleKey => $ruleValue]);
                }
            }
        }

        return $this;
    }

    /**
     * Get the data that should be injected into the iteration of a wildcard "sometimes" callback.
     *
     * @param  string  $attribute
     * @return \Illuminate\Support\Fluent|array|mixed
     */
    private function dataForSometimesIteration(string $attribute, $removeLastSegmentOfAttribute)
    {
        $lastSegmentOfAttribute = strrchr($attribute, '.');

        $attribute = $lastSegmentOfAttribute && $removeLastSegmentOfAttribute
                    ? Str::replaceLast($lastSegmentOfAttribute, '', $attribute)
                    : $attribute;

        return is_array($data = data_get($this->data, $attribute))
            ? new Fluent($data)
            : $data;
    }

    /**
     * Instruct the validator to stop validating after the first rule failure.
     *
     * @param  bool  $stopOnFirstFailure
     * @return $this
     */
    public function stopOnFirstFailure($stopOnFirstFailure = true)
    {
        $this->stopOnFirstFailure = $stopOnFirstFailure;

        return $this;
    }

    /**
     * Register an array of custom validator extensions.
     *
     * @param  array  $extensions
     * @return void
     */
    public function addExtensions(array $extensions)
    {
        if ($extensions) {
            $keys = array_map([Str::class, 'snake'], array_keys($extensions));

            $extensions = array_combine($keys, array_values($extensions));
        }

        $this->extensions = array_merge($this->extensions, $extensions);
    }

    /**
     * Register an array of custom implicit validator extensions.
     *
     * @param  array  $extensions
     * @return void
     */
    public function addImplicitExtensions(array $extensions)
    {
        $this->addExtensions($extensions);

        foreach ($extensions as $rule => $extension) {
            $this->implicitRules[] = Str::studly($rule);
        }
    }

    /**
     * Register an array of custom dependent validator extensions.
     *
     * @param  array  $extensions
     * @return void
     */
    public function addDependentExtensions(array $extensions)
    {
        $this->addExtensions($extensions);

        foreach ($extensions as $rule => $extension) {
            $this->dependentRules[] = Str::studly($rule);
        }
    }

    /**
     * Register a custom validator extension.
     *
     * @param  string  $rule
     * @param  \Closure|string  $extension
     * @return void
     */
    public function addExtension($rule, $extension)
    {
        $this->extensions[Str::snake($rule)] = $extension;
    }

    /**
     * Register a custom implicit validator extension.
     *
     * @param  string  $rule
     * @param  \Closure|string  $extension
     * @return void
     */
    public function addImplicitExtension($rule, $extension)
    {
        $this->addExtension($rule, $extension);

        $this->implicitRules[] = Str::studly($rule);
    }

    /**
     * Register a custom dependent validator extension.
     *
     * @param  string  $rule
     * @param  \Closure|string  $extension
     * @return void
     */
    public function addDependentExtension($rule, $extension)
    {
        $this->addExtension($rule, $extension);

        $this->dependentRules[] = Str::studly($rule);
    }

    /**
     * Register an array of custom validator message replacers.
     *
     * @param  array  $replacers
     * @return void
     */
    public function addReplacers(array $replacers)
    {
        if ($replacers) {
            $keys = array_map([Str::class, 'snake'], array_keys($replacers));

            $replacers = array_combine($keys, array_values($replacers));
        }

        $this->replacers = array_merge($this->replacers, $replacers);
    }

    /**
     * Register a custom validator message replacer.
     *
     * @param  string  $rule
     * @param  \Closure|string  $replacer
     * @return void
     */
    public function addReplacer($rule, $replacer)
    {
        $this->replacers[Str::snake($rule)] = $replacer;
    }

    /**
     * Set the custom messages for the validator.
     *
     * @param  array  $messages
     * @return $this
     */
    public function setCustomMessages(array $messages)
    {
        $this->customMessages = array_merge($this->customMessages, $messages);

        return $this;
    }

    /**
     * Set the custom attributes on the validator.
     *
     * @param  array  $attributes
     * @return $this
     */
    public function setAttributeNames(array $attributes)
    {
        $this->customAttributes = $attributes;

        return $this;
    }

    /**
     * Add custom attributes to the validator.
     *
     * @param  array  $attributes
     * @return $this
     */
    public function addCustomAttributes(array $attributes)
    {
        $this->customAttributes = array_merge($this->customAttributes, $attributes);

        return $this;
    }

    /**
     * Set the callback that used to format an implicit attribute.
     *
     * @param  callable|null  $formatter
     * @return $this
     */
    public function setImplicitAttributesFormatter(?callable $formatter = null)
    {
        $this->implicitAttributesFormatter = $formatter;

        return $this;
    }

    /**
     * Set the custom values on the validator.
     *
     * @param  array  $values
     * @return $this
     */
    public function setValueNames(array $values)
    {
        $this->customValues = $values;

        return $this;
    }

    /**
     * Add the custom values for the validator.
     *
     * @param  array  $customValues
     * @return $this
     */
    public function addCustomValues(array $customValues)
    {
        $this->customValues = array_merge($this->customValues, $customValues);

        return $this;
    }

    /**
     * Set the fallback messages for the validator.
     *
     * @param  array  $messages
     * @return void
     */
    public function setFallbackMessages(array $messages)
    {
        $this->fallbackMessages = $messages;
    }

    /**
     * Get the Presence Verifier implementation.
     *
     * @param  string|null  $connection
     * @return \Illuminate\Validation\PresenceVerifierInterface
     *
     * @throws \RuntimeException
     */
    public function getPresenceVerifier($connection = null)
    {
        if (! isset($this->presenceVerifier)) {
            throw new RuntimeException('Presence verifier has not been set.');
        }

        if ($this->presenceVerifier instanceof DatabasePresenceVerifierInterface) {
            $this->presenceVerifier->setConnection($connection);
        }

        return $this->presenceVerifier;
    }

    /**
     * Set the Presence Verifier implementation.
     *
     * @param  \Illuminate\Validation\PresenceVerifierInterface  $presenceVerifier
     * @return void
     */
    public function setPresenceVerifier(PresenceVerifierInterface $presenceVerifier)
    {
        $this->presenceVerifier = $presenceVerifier;
    }

    /**
     * Get the exception to throw upon failed validation.
     *
     * @return string
     */
    public function getException()
    {
        return $this->exception;
    }

    /**
     * Set the exception to throw upon failed validation.
     *
     * @param  string  $exception
     * @return $this
     *
     * @throws \InvalidArgumentException
     */
    public function setException($exception)
    {
        if (! is_a($exception, ValidationException::class, true)) {
            throw new InvalidArgumentException(
                sprintf('Exception [%s] is invalid. It must extend [%s].', $exception, ValidationException::class)
            );
        }

        $this->exception = $exception;

        return $this;
    }

    /**
     * Ensure exponents are within range using the given callback.
     *
     * @param  callable(int $scale, string $attribute, mixed $value)  $callback
     * @return $this
     */
    public function ensureExponentWithinAllowedRangeUsing($callback)
    {
        $this->ensureExponentWithinAllowedRangeUsing = $callback;

        return $this;
    }

    /**
     * Get the Translator implementation.
     *
     * @return \Illuminate\Contracts\Translation\Translator
     */
    public function getTranslator()
    {
        return $this->translator;
    }

    /**
     * Set the Translator implementation.
     *
     * @param  \Illuminate\Contracts\Translation\Translator  $translator
     * @return void
     */
    public function setTranslator(Translator $translator)
    {
        $this->translator = $translator;
    }

    /**
     * Set the IoC container instance.
     *
     * @param  \Illuminate\Contracts\Container\Container  $container
     * @return void
     */
    public function setContainer(Container $container)
    {
        $this->container = $container;
    }

    /**
     * Call a custom validator extension.
     *
     * @param  string  $rule
     * @param  array  $parameters
     * @return bool|null
     */
    protected function callExtension($rule, $parameters)
    {
        $callback = $this->extensions[$rule];

        if (is_callable($callback)) {
            return $callback(...array_values($parameters));
        } elseif (is_string($callback)) {
            return $this->callClassBasedExtension($callback, $parameters);
        }
    }

    /**
     * Call a class based validator extension.
     *
     * @param  string  $callback
     * @param  array  $parameters
     * @return bool
     */
    protected function callClassBasedExtension($callback, $parameters)
    {
        [$class, $method] = Str::parseCallback($callback, 'validate');

        return $this->container->make($class)->{$method}(...array_values($parameters));
    }

    /**
     * Handle dynamic calls to class methods.
     *
     * @param  string  $method
     * @param  array  $parameters
     * @return mixed
     *
     * @throws \BadMethodCallException
     */
    public function __call($method, $parameters)
    {
        $rule = Str::snake(substr($method, 8));

        if (isset($this->extensions[$rule])) {
            return $this->callExtension($rule, $parameters);
        }

        throw new BadMethodCallException(sprintf(
            'Method %s::%s does not exist.', static::class, $method
        ));
    }
}

.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