<?php declare(strict_types=1);
namespace openvk\VKAPI\Handlers;
use openvk\Web\Models\Repositories\Users as UsersRepo;
use openvk\Web\Models\Repositories\Posts as PostsRepo;

final class Likes extends VKAPIRequestHandler
{
	function add(string $type, int $owner_id, int $item_id): object
	{
		$this->requireUser();
        $this->willExecuteWriteAction();

        switch($type) {
            case "post":
                $post = (new PostsRepo)->getPostById($owner_id, $item_id);
                if(is_null($post))
                    $this->fail(100, "One of the parameters specified was missing or invalid: object not found");

                $post->setLike(true, $this->getUser());

                return (object) [
                    "likes" => $post->getLikesCount()
                ];
            default:
                $this->fail(100, "One of the parameters specified was missing or invalid: incorrect type");
        }
	}

	function delete(string $type, int $owner_id, int $item_id): object
	{
		$this->requireUser();
        $this->willExecuteWriteAction();

        switch($type) {
            case "post":
                $post = (new PostsRepo)->getPostById($owner_id, $item_id);
                if (is_null($post))
                    $this->fail(100, "One of the parameters specified was missing or invalid: object not found");

                $post->setLike(false, $this->getUser());
                return (object) [
                    "likes" => $post->getLikesCount()
                ];
            default:
                $this->fail(100, "One of the parameters specified was missing or invalid: incorrect type");
        }
	}
	
    function isLiked(int $user_id, string $type, int $owner_id, int $item_id): object
	{
		$this->requireUser();

        switch($type) {
            case "post":
                $user = (new UsersRepo)->get($user_id);
                if (is_null($user))
                    $this->fail(100, "One of the parameters specified was missing or invalid: user not found");

                $post = (new PostsRepo)->getPostById($owner_id, $item_id);
                if (is_null($post))
                    $this->fail(100, "One of the parameters specified was missing or invalid: object not found");
                
                return (object) [
                    "liked"  => (int) $post->hasLikeFrom($user),
                    "copied" => 0 # TODO: handle this
                ];
            default:
                $this->fail(100, "One of the parameters specified was missing or invalid: incorrect type");
        }
	}
}