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<?php |
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namespace Mgleis\DiskUsageInsights\Frontend; |
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|
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class Pagination { |
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|
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private string $urlPattern; |
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private int $totalItemCount; |
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private int $itemsPerPage; |
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private int $page; |
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|
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public function __construct(string $urlPattern, $totalItemCount = 0, $page = 0, $itemsPerPage = 10) { |
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$this->urlPattern = $urlPattern; |
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$this->totalItemCount = $totalItemCount; |
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$this->itemsPerPage = $itemsPerPage; |
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$this->page = $page; |
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} |
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|
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public static function parseFromString(string $url): Pagination { |
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$result = []; |
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list($path, $query) = explode('?', $url); |
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|
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parse_str($query, $result); |
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|
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$page = $result['p'] ?? 0; |
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$itemsPerPage = $result['ipc'] ?? 10; |
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$totalItemCount = $result['tic'] ?? 10; |
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|
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unset($result['p']); |
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unset($result['ipc']); |
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unset($result['tic']); |
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|
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$urlPattern = $path . '?1=1'; |
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foreach ($result as $key => $value) { |
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$urlPattern .= sprintf('&%s=%s', $key, urlencode($value)); |
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} |
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return new Pagination($urlPattern, $totalItemCount, $page, $itemsPerPage); |
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} |
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|
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public function hasNextPage(): bool { |
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return $this->page+1 < $this->calcTotalPages(); |
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} |
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|
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public function hasPreviousPage(): bool { |
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return $this->page != 0; |
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} |
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|
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private function buildPageUrl(int $page): string { |
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return sprintf('%s%sp=%s&ipp=%s&tic=%s', |
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$this->urlPattern, |
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str_contains($this->urlPattern, '?') ? '&' : '?', |
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$page, |
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$this->itemsPerPage, |
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$this->totalItemCount |
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); |
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} |
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|
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public function buildNextPageUrl(): string { |
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return $this->buildPageUrl(min($this->page + 1, $this->calcTotalPages())); |
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} |
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|
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public function buildPreviousPageUrl(): string { |
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return $this->buildPageUrl(max(0, $this->page - 1)); |
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} |
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|
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public function calcTotalPages(): int { |
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return ceil($this->totalItemCount / $this->itemsPerPage); |
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} |
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public function calcOffset(): int { |
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return $this->page * $this->itemsPerPage; |
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} |
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|
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public function getPage(): int { return $this->page; } |
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public function getTotalItemCount(): int { return $this->totalItemCount; } |
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public function getItemsPerPage(): int { return $this->itemsPerPage; } |
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|
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} |
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|
