<?php

namespace Ulmus\SearchRequest;

use Ulmus\Repository;
use Ulmus\SearchRequest\Attribute\SearchManual;

trait SearchRequestPaginationTrait {
    use DeprecatedSearchRequestFormatTrait;

    public int $count = 0;

    #[SearchManual]
    public int $page = 1;

    public int $pageCount = 0;

    #[SearchManual]
    public int $limit = 25;
    
    public bool $skipCount = false;

    public ? array $columns = null;

    public function count(): int
    {
        return $this->count;
    }

    public function page(): int
    {
        return $this->page;
    }

    public function limit(): int 
    {
        return $this->limit;
    }

    public function offset(): int 
    {
        return (int) ( abs( ( $this->page() - 1 ) * $this->limit() ) );
    }

    public function pagination(int $page, int $itemCount) : void 
    {
        $this->count = $itemCount;
        $this->page = $page;
    }
    
    public function pageCount() : int
    {
        return $this->limit() ? $this->pageCount = ceil($this->count() / $this->limit()) : 1;
    }
    
    public function hasPagination() : int
    {
        return $this->pageCount() > 1;
    }

    public function skipCount(bool $value) : self
    {
        $this->skipCount = $value;

        return $this;
    }

    public function resultShown() : int
    {
        $total = $this->page() * $this->limit();

        return $total <= $this->count() ? $total : $this->count();
    }

    public function jsonSerialize(): mixed
    {
        $this->pageCount();

        return $this;
    }

    public function wheresConditions() : iterable
    {
        return array_filter(($this->wheresConditions ?? []) + [

        ], fn($i) => ! is_null($i) ) + [ ];
    }

    public function wheresOperators() : iterable
    {
        return array_filter(($this->wheresOperators ?? []) + [

        ], fn($i) => ! is_null($i) ) + [ ];
    }

    public function likesConditions() : iterable
    {
        return array_filter(($this->likesConditions ?? []) + [

        ], fn($i) => ! is_null($i) ) + [ ];
    }

    public function likesOperators() : iterable
    {
        return array_filter(($this->likesOperators ?? []) + [

        ], fn($i) => ! is_null($i) ) + [ ];
    }

    public function filter(Repository $repository) : Repository
    {
        return $repository;
    }

    public function applyCount(Repository\RepositoryInterface $repository): SearchRequestInterface
    {
        $this->count = $this->filter($repository)
            ->wheres($this->wheres(), $this->wheresOperators(), $this->wheresConditions())
            ->likes($this->likes(), $this->likesConditions())
            ->groups($this->groups())
            ->count();

        return $this;
    }

    public function apply(Repository\RepositoryInterface $repository): SearchRequestInterface
    {
        $this->filter($repository)
            ->wheres($this->wheres(), $this->wheresOperators(), $this->wheresConditions())
            ->likes($this->likes(), $this->likesConditions())
            ->orders($this->orders())
            ->groups($this->groups())
            ->offset($this->offset())
            ->limit($this->limit());

        return $this;
    }
}