<?php

declare(strict_types=1);

namespace App\Http\Resources\FormBuilder;

use App\Enums\FormBuilder\FormFieldType;
use App\Models\FormBuilder\FormField;
use App\Models\PersonTag;
use App\Services\FormBuilder\FormFieldBindingService;
use App\Services\FormBuilder\FormFieldConditionalLogicService;
use App\Services\FormBuilder\FormFieldConfigService;
use App\Services\FormBuilder\FormFieldOptionService;
use App\Services\FormBuilder\FormFieldValidationRuleService;
use App\Services\FormBuilder\FormLocaleResolver;
use Illuminate\Http\Request;
use Illuminate\Http\Resources\Json\JsonResource;

/**
 * @mixin FormField
 */
final class FormFieldResource extends JsonResource
{
    /**
     * @return array<string, mixed>
     */
    public function toArray(Request $request): array
    {
        $locale = app(FormLocaleResolver::class)->resolve(
            $this->resource->schema,
            $request->user(),
        );
        $this->resource->loadMissing('options');

        return [
            'id' => $this->id,
            'form_schema_id' => $this->form_schema_id,
            'form_schema_section_id' => $this->form_schema_section_id,
            'library_field_id' => $this->library_field_id,
            'field_type' => $this->field_type,
            'slug' => $this->slug,
            'label' => $this->resolvedLabel($locale),
            'help_text' => $this->resolvedHelpText($locale),
            'section' => $this->section,
            'options' => $this->resource->options->isNotEmpty()
                ? app(FormFieldOptionService::class)->toJsonShape($this->resource->options)
                : null,
            'available_tags' => $this->when(
                $this->field_type === FormFieldType::TAG_PICKER->value,
                fn () => $this->availableTags(),
            ),
            'validation_rules' => app(FormFieldValidationRuleService::class)->toJsonShape(
                $this->resource->validationRules,
            ),
            'configs' => app(FormFieldConfigService::class)->toJsonShape(
                $this->resource->configs,
            ),
            'is_required' => (bool) $this->is_required,
            'is_filterable' => (bool) $this->is_filterable,
            'is_portal_visible' => (bool) $this->is_portal_visible,
            'is_admin_only' => (bool) $this->is_admin_only,
            'is_unique' => (bool) $this->is_unique,
            'is_pii' => (bool) $this->is_pii,
            'display_width' => $this->display_width instanceof \BackedEnum ? $this->display_width->value : $this->display_width,
            'binding' => app(FormFieldBindingService::class)->toJsonShape(
                $this->resource->bindings->first(),
            ),
            'conditional_logic' => app(FormFieldConditionalLogicService::class)->toJsonShape(
                $this->resource->rootConditionalLogicGroup(),
            ),
            'role_restrictions' => $this->role_restrictions,
            'translations' => $this->translations,
            'value_storage_hint' => $this->value_storage_hint instanceof \BackedEnum ? $this->value_storage_hint->value : $this->value_storage_hint,
            'review_required' => (bool) $this->review_required,
            'sort_order' => (int) $this->sort_order,
        ];
    }

    private function resolvedLabel(string $locale): string
    {
        $translations = $this->translations ?? [];
        if (isset($translations[$locale]['label']) && $translations[$locale]['label'] !== '') {
            return (string) $translations[$locale]['label'];
        }

        return (string) $this->label;
    }

    private function resolvedHelpText(string $locale): ?string
    {
        $translations = $this->translations ?? [];
        if (isset($translations[$locale]['help_text'])) {
            return (string) $translations[$locale]['help_text'];
        }

        return $this->help_text;
    }

    /**
     * @return array<int, array<string, string>>
     */
    private function availableTags(): array
    {
        $organisationId = $this->resource->schema?->organisation_id;
        if ($organisationId === null) {
            return [];
        }

        $configs = app(FormFieldConfigService::class)->toJsonShape($this->resource->configs);
        $categoryFilter = (array) ($configs['tag_categories']['categories'] ?? []);

        $query = PersonTag::withoutGlobalScopes()
            ->where('organisation_id', $organisationId)
            ->where('is_active', true);

        if ($categoryFilter !== []) {
            $query->whereIn('category', $categoryFilter);
        }

        return $query->get(['id', 'name', 'category'])
            ->map(fn ($t) => [
                'id' => (string) $t->id,
                'name' => (string) $t->name,
                'category' => (string) $t->category,
            ])
            ->all();
    }
}