<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Support\Str;
use Illuminate\Validation\Validator;

class StoreContactMessageRequest extends FormRequest
{
    private const MIN_SUBMIT_SECONDS = 3;

    public function authorize(): bool
    {
        return true;
    }

    public function rules(): array
    {
        return [
            'name' => ['required', 'string', 'max:255'],
            'email' => ['required', 'email', 'max:255'],
            'message' => ['required', 'string', 'max:2000'],
            'website' => ['nullable', 'string', 'max:0'],
        ];
    }

    public function after(): array
    {
        return [function (Validator $validator): void {
            if ($this->submittedTooQuickly()) {
                $validator->errors()->add('form', 'Please wait a moment and try again.');
            }

            if ($this->containsSpamLinks()) {
                $validator->errors()->add('message', 'Please remove promotional links and try again.');
            }

            if ($this->nameContainsUrl()) {
                $validator->errors()->add('name', 'Please enter a valid name.');
            }
        }];
    }

    private function submittedTooQuickly(): bool
    {
        $startedAt = (int) $this->session()->get('contact_form_started_at', 0);

        if ($startedAt <= 0) {
            return true;
        }

        return now()->timestamp - $startedAt < self::MIN_SUBMIT_SECONDS;
    }

    private function containsSpamLinks(): bool
    {
        return preg_match_all('/https?:\/\/|www\./i', (string) $this->input('message', '')) > 1;
    }

    private function nameContainsUrl(): bool
    {
        return Str::contains(Str::lower((string) $this->input('name', '')), ['http://', 'https://', 'www.']);
    }

    public function messages(): array
    {
        return [
            'website.max' => 'Please leave this field empty.',
        ];
    }
}