<?php

declare(strict_types=1);

namespace LIT\MCP\Integrations\WordPress\Content;

use LIT\MCP\Abilities\Ability;
use LIT\MCP\Integrations\WordPress\PostGuard;
use LIT\MCP\Integrations\WordPress\Schema\ContentSchema;
use WP_Error;

final class ContentGetAbility implements Ability
{
    public function __construct(private ContentSchema $schema, private PostPresenter $presenter)
    {
    }

    public function name(): string
    {
        return 'lit/content-get';
    }

    public function label(): string
    {
        return 'Inhalt lesen';
    }

    public function description(): string
    {
        return 'Liest einen Eintrag vollständig: Kerndaten, Inhalt, Begriffe, alle Felder (Pods/Meta), '
            . 'Beitragsbild, rev (für lit-content-update). Bei Divi-Inhalten wird content nicht ausgegeben; '
            . 'hints verweist dann auf lit-divi-outline.';
    }

    public function inputSchema(): array
    {
        return [
            'type' => 'object',
            'properties' => ['post_id' => ['type' => 'integer', 'minimum' => 1]],
            'required' => ['post_id'],
            'additionalProperties' => false,
        ];
    }

    public function outputSchema(): ?array
    {
        return PostPresenter::fullSchema();
    }

    public function annotations(): array
    {
        return ['readonly' => true, 'destructive' => false, 'idempotent' => true];
    }

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

    public function permission(array $input): bool|WP_Error
    {
        $post = PostGuard::editable($input['post_id'] ?? null, $this->schema);

        return $post instanceof WP_Error ? $post : true;
    }

    public function execute(array $input): mixed
    {
        $post = PostGuard::editable($input['post_id'] ?? null, $this->schema);
        if ($post instanceof WP_Error) {
            return $post;
        }

        return $this->presenter->full($post);
    }
}