<?php

declare(strict_types=1);

namespace App\Http\Requests\Admin;

use Illuminate\Contracts\Validation\ValidationRule;
use Illuminate\Contracts\Validation\Validator as ValidatorContract;
use Illuminate\Support\Facades\Validator;

final class PageBlockContentValidator
{
    /**
     * @param  array<int, array<string, mixed>>  $blocks
     */
    public static function validateBlocksArray(ValidatorContract $validator, array $blocks): void
    {
        $formCount = 0;
        foreach ($blocks as $i => $block) {
            if (! is_array($block)) {
                $validator->errors()->add("blocks.$i", __('Ongeldig blok.'));

                continue;
            }
            $type = $block['type'] ?? '';
            if ($type === 'form') {
                $formCount++;
            }
            $content = $block['content'] ?? [];
            if (! is_array($content)) {
                $validator->errors()->add("blocks.$i.content", __('Ongeldige blokinhoud.'));

                continue;
            }
            $rules = self::rulesForType((string) $type);
            if ($rules === []) {
                $validator->errors()->add("blocks.$i.type", __('Onbekend bloktype.'));

                continue;
            }
            $inner = Validator::make($content, $rules);
            if ($inner->fails()) {
                foreach ($inner->errors()->messages() as $field => $messages) {
                    foreach ($messages as $message) {
                        $validator->errors()->add("blocks.$i.content.$field", $message);
                    }
                }
            }

            if ($type === 'form') {
                foreach (['first_name', 'last_name', 'email'] as $coreField) {
                    if (! data_get($content, "fields.$coreField.enabled", true)) {
                        $validator->errors()->add(
                            "blocks.$i.content.fields.$coreField.enabled",
                            __('Voornaam, achternaam en e-mail moeten ingeschakeld blijven.')
                        );
                    }
                }
            }
        }
        if ($formCount > 1) {
            $validator->errors()->add('blocks', __('Er mag maximaal één registratieformulier-blok zijn.'));
        }
    }

    /**
     * @return array<string, array<int, string|ValidationRule>>
     */
    private static function rulesForType(string $type): array
    {
        $icons = 'ticket,clock,mail,users,star,heart,gift,music,shield,check';

        return match ($type) {
            'hero' => [
                'headline' => ['required', 'string', 'max:255'],
                'subheadline' => ['nullable', 'string', 'max:5000'],
                'eyebrow_text' => ['nullable', 'string', 'max:255'],
                'eyebrow_style' => ['nullable', 'string', 'in:badge,text,none'],
                'text_alignment' => ['nullable', 'string', 'in:center,left,right'],
            ],
            'image' => [
                'image' => ['nullable', 'string', 'max:500'],
                'link_url' => ['nullable', 'string', 'max:500'],
                'alt' => ['nullable', 'string', 'max:255'],
                'max_width_px' => ['nullable', 'integer', 'min:48', 'max:800'],
                'text_alignment' => ['nullable', 'string', 'in:center,left,right'],
            ],
            'benefits' => [
                'title' => ['nullable', 'string', 'max:255'],
                'items' => ['required', 'array', 'min:1'],
                'items.*.icon' => ['required', 'string', "in:$icons"],
                'items.*.text' => ['required', 'string', 'max:500'],
                'layout' => ['nullable', 'string', 'in:list,grid'],
                'max_columns' => ['nullable', 'integer', 'in:1,2,3'],
            ],
            'social_proof' => [
                'template' => ['required', 'string', 'max:255'],
                'min_count' => ['required', 'integer', 'min:0'],
                'show_animation' => ['sometimes', 'boolean'],
                'style' => ['nullable', 'string', 'in:pill,badge,plain'],
            ],
            'form' => [
                'title' => ['nullable', 'string', 'max:255'],
                'description' => ['nullable', 'string', 'max:2000'],
                'button_label' => ['required', 'string', 'max:120'],
                'button_color' => ['nullable', 'string', 'regex:/^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$/'],
                'button_text_color' => ['nullable', 'string', 'regex:/^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$/'],
                'show_field_icons' => ['sometimes', 'boolean'],
                'privacy_text' => ['nullable', 'string', 'max:2000'],
                'privacy_url' => ['nullable', 'string', 'max:500'],
                'fields' => ['required', 'array'],
                'fields.first_name.enabled' => ['sometimes', 'boolean'],
                'fields.first_name.required' => ['sometimes', 'boolean'],
                'fields.first_name.label' => ['nullable', 'string', 'max:120'],
                'fields.first_name.placeholder' => ['nullable', 'string', 'max:255'],
                'fields.last_name.enabled' => ['sometimes', 'boolean'],
                'fields.last_name.required' => ['sometimes', 'boolean'],
                'fields.last_name.label' => ['nullable', 'string', 'max:120'],
                'fields.last_name.placeholder' => ['nullable', 'string', 'max:255'],
                'fields.email.enabled' => ['sometimes', 'boolean'],
                'fields.email.required' => ['sometimes', 'boolean'],
                'fields.email.label' => ['nullable', 'string', 'max:120'],
                'fields.email.placeholder' => ['nullable', 'string', 'max:255'],
                'fields.phone.enabled' => ['sometimes', 'boolean'],
                'fields.phone.required' => ['sometimes', 'boolean'],
                'fields.phone.label' => ['nullable', 'string', 'max:120'],
                'fields.phone.placeholder' => ['nullable', 'string', 'max:255'],
            ],
            'countdown' => [
                'target_datetime' => ['required', 'date'],
                'title' => ['nullable', 'string', 'max:255'],
                'expired_action' => ['required', 'string', 'in:hide,show_message,reload'],
                'expired_message' => ['nullable', 'string', 'max:1000'],
                'style' => ['nullable', 'string', 'in:large,compact'],
                'show_labels' => ['sometimes', 'boolean'],
                'labels' => ['nullable', 'array'],
                'labels.days' => ['nullable', 'string', 'max:32'],
                'labels.hours' => ['nullable', 'string', 'max:32'],
                'labels.minutes' => ['nullable', 'string', 'max:32'],
                'labels.seconds' => ['nullable', 'string', 'max:32'],
            ],
            'text' => [
                'title' => ['nullable', 'string', 'max:255'],
                'body' => ['required', 'string', 'max:20000'],
                'text_size' => ['nullable', 'string', 'in:sm,base,lg'],
                'text_alignment' => ['nullable', 'string', 'in:center,left,right'],
            ],
            'cta_banner' => [
                'text' => ['required', 'string', 'max:500'],
                'button_label' => ['required', 'string', 'max:120'],
                'button_url' => ['required', 'string', 'url:http,https', 'max:500'],
                'button_color' => ['nullable', 'string', 'regex:/^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$/'],
                'style' => ['nullable', 'string', 'in:inline,stacked'],
            ],
            'divider' => [
                'style' => ['required', 'string', 'in:line,dots,space_only'],
                'spacing' => ['required', 'string', 'in:small,medium,large'],
            ],
            default => [],
        };
    }
}