<?php

namespace App\Validators;

use App\Exceptions\ValidationException;

class UserValidator extends BaseValidator
{
    /**
     * Main validation method
     */
    public function validate(array $data): void
    {
        $this->data = $data;
        $this->clearErrors();
    }

    /**
     * Validate user creation data
     */
    public function validateCreate(array $data): void
    {
        $this->data = $data;
        $this->clearErrors();

        // Required fields
        $this->required('first_name', 'First name is required')
             ->minLength('first_name', 2, 'First name must be at least 2 characters long')
             ->maxLength('first_name', 50, 'First name must not exceed 50 characters')
             ->regex('first_name', '/^[a-zA-Z\s\-\'\.]+$/', 'First name can only contain letters, spaces, hyphens, apostrophes, and periods');

        $this->required('last_name', 'Last name is required')
             ->minLength('last_name', 2, 'Last name must be at least 2 characters long')
             ->maxLength('last_name', 50, 'Last name must not exceed 50 characters')
             ->regex('last_name', '/^[a-zA-Z\s\-\'\.]+$/', 'Last name can only contain letters, spaces, hyphens, apostrophes, and periods');

        $this->required('email', 'Email address is required')
             ->email('email', 'Please enter a valid email address')
             ->maxLength('email', 255, 'Email address must not exceed 255 characters');

        $this->required('password', 'Password is required')
             ->strongPassword('password');

        // Company ID validation
        if (isset($data['company_id'])) {
            $this->integer('company_id', 'Company ID must be a valid integer')
                 ->min('company_id', 1, 'Company ID must be a positive number');
        }

        // Role validation
        if (isset($data['role'])) {
            $this->in('role', ['user', 'admin', 'manager', 'viewer'], 'Invalid role specified');
        }

        // Optional fields with validation
        if (isset($data['phone']) && !empty($data['phone'])) {
            $this->phone('phone', 'Please enter a valid phone number');
        }

        if (isset($data['date_of_birth']) && !empty($data['date_of_birth'])) {
            $this->date('date_of_birth', 'Y-m-d', 'Date of birth must be in YYYY-MM-DD format');
        }

        if (isset($data['website']) && !empty($data['website'])) {
            $this->url('website', 'Please enter a valid website URL');
        }

        if (isset($data['is_active'])) {
            $this->boolean('is_active', 'Active status must be true or false');
        }

        if (isset($data['timezone']) && !empty($data['timezone'])) {
            $this->maxLength('timezone', 50, 'Timezone must not exceed 50 characters');
        }

        if (isset($data['language']) && !empty($data['language'])) {
            $this->in('language', ['en', 'es', 'fr', 'de', 'it', 'pt', 'zh', 'ja', 'ko'], 'Invalid language code');
        }

        $this->throwIfErrors('User creation validation failed');
    }

    /**
     * Validate user update data
     */
    public function validateUpdate(array $data): void
    {
        $this->data = $data;
        $this->clearErrors();

        // All fields are optional for update, but validate if present
        if (isset($data['first_name']) && !empty($data['first_name'])) {
            $this->minLength('first_name', 2, 'First name must be at least 2 characters long')
                 ->maxLength('first_name', 50, 'First name must not exceed 50 characters')
                 ->regex('first_name', '/^[a-zA-Z\s\-\'\.]+$/', 'First name can only contain letters, spaces, hyphens, apostrophes, and periods');
        }

        if (isset($data['last_name']) && !empty($data['last_name'])) {
            $this->minLength('last_name', 2, 'Last name must be at least 2 characters long')
                 ->maxLength('last_name', 50, 'Last name must not exceed 50 characters')
                 ->regex('last_name', '/^[a-zA-Z\s\-\'\.]+$/', 'Last name can only contain letters, spaces, hyphens, apostrophes, and periods');
        }

        if (isset($data['email']) && !empty($data['email'])) {
            $this->email('email', 'Please enter a valid email address')
                 ->maxLength('email', 255, 'Email address must not exceed 255 characters');
        }

        if (isset($data['phone']) && !empty($data['phone'])) {
            $this->phone('phone', 'Please enter a valid phone number');
        }

        if (isset($data['company_id'])) {
            $this->integer('company_id', 'Company ID must be a valid integer')
                 ->min('company_id', 1, 'Company ID must be a positive number');
        }

        if (isset($data['role'])) {
            $this->in('role', ['user', 'admin', 'manager', 'viewer'], 'Invalid role specified');
        }

        if (isset($data['date_of_birth']) && !empty($data['date_of_birth'])) {
            $this->date('date_of_birth', 'Y-m-d', 'Date of birth must be in YYYY-MM-DD format');
        }

        if (isset($data['website']) && !empty($data['website'])) {
            $this->url('website', 'Please enter a valid website URL');
        }

        if (isset($data['is_active'])) {
            $this->boolean('is_active', 'Active status must be true or false');
        }

        if (isset($data['timezone']) && !empty($data['timezone'])) {
            $this->maxLength('timezone', 50, 'Timezone must not exceed 50 characters');
        }

        if (isset($data['language']) && !empty($data['language'])) {
            $this->in('language', ['en', 'es', 'fr', 'de', 'it', 'pt', 'zh', 'ja', 'ko'], 'Invalid language code');
        }

        $this->throwIfErrors('User update validation failed');
    }

    /**
     * Validate password update data
     */
    public function validatePasswordUpdate(array $data): void
    {
        $this->data = $data;
        $this->clearErrors();

        $this->required('current_password', 'Current password is required');
        $this->required('new_password', 'New password is required')
             ->strongPassword('new_password');
        $this->required('new_password_confirmation', 'New password confirmation is required')
             ->matches('new_password_confirmation', 'new_password', 'New password confirmation does not match');

        $this->throwIfErrors('Password update validation failed');
    }

    /**
     * Validate profile update data
     */
    public function validateProfileUpdate(array $data): void
    {
        $this->data = $data;
        $this->clearErrors();

        if (isset($data['first_name']) && !empty($data['first_name'])) {
            $this->minLength('first_name', 2, 'First name must be at least 2 characters long')
                 ->maxLength('first_name', 50, 'First name must not exceed 50 characters')
                 ->regex('first_name', '/^[a-zA-Z\s\-\'\.]+$/', 'First name can only contain letters, spaces, hyphens, apostrophes, and periods');
        }

        if (isset($data['last_name']) && !empty($data['last_name'])) {
            $this->minLength('last_name', 2, 'Last name must be at least 2 characters long')
                 ->maxLength('last_name', 50, 'Last name must not exceed 50 characters')
                 ->regex('last_name', '/^[a-zA-Z\s\-\'\.]+$/', 'Last name can only contain letters, spaces, hyphens, apostrophes, and periods');
        }

        if (isset($data['phone']) && !empty($data['phone'])) {
            $this->phone('phone', 'Please enter a valid phone number');
        }

        if (isset($data['date_of_birth']) && !empty($data['date_of_birth'])) {
            $this->date('date_of_birth', 'Y-m-d', 'Date of birth must be in YYYY-MM-DD format');
        }

        if (isset($data['website']) && !empty($data['website'])) {
            $this->url('website', 'Please enter a valid website URL');
        }

        if (isset($data['timezone']) && !empty($data['timezone'])) {
            $this->maxLength('timezone', 50, 'Timezone must not exceed 50 characters');
        }

        if (isset($data['language']) && !empty($data['language'])) {
            $this->in('language', ['en', 'es', 'fr', 'de', 'it', 'pt', 'zh', 'ja', 'ko'], 'Invalid language code');
        }

        $this->throwIfErrors('Profile update validation failed');
    }

    /**
     * Validate user search parameters
     */
    public function validateSearch(array $data): void
    {
        $this->data = $data;
        $this->clearErrors();

        if (isset($data['q']) && !empty($data['q'])) {
            $this->minLength('q', 2, 'Search query must be at least 2 characters long')
                 ->maxLength('q', 100, 'Search query must not exceed 100 characters');
        }

        if (isset($data['role']) && !empty($data['role'])) {
            $this->in('role', ['user', 'admin', 'manager', 'viewer'], 'Invalid role specified');
        }

        if (isset($data['company_id'])) {
            $this->integer('company_id', 'Company ID must be a valid integer')
                 ->min('company_id', 1, 'Company ID must be a positive number');
        }

        if (isset($data['is_active'])) {
            $this->boolean('is_active', 'Active status must be true or false');
        }

        if (isset($data['page'])) {
            $this->integer('page', 'Page must be a valid integer')
                 ->min('page', 1, 'Page must be at least 1');
        }

        if (isset($data['limit'])) {
            $this->integer('limit', 'Limit must be a valid integer')
                 ->min('limit', 1, 'Limit must be at least 1')
                 ->max('limit', 100, 'Limit must not exceed 100');
        }

        $this->throwIfErrors('User search validation failed');
    }
}