freshrss-read-more/extension.php

<?php

declare(strict_types=1);

final class ReadMoreExtension extends Minz_Extension {
	public const DEFAULT_HEIGHT = 250;
	public const MIN_HEIGHT = 100;
	public const MAX_HEIGHT = 2000;

	#[\Override]
	public function init(): void {
		$this->registerTranslates();
		if (!FreshRSS_Context::hasUserConf()) {
			return;
		}
		Minz_View::appendStyle($this->getFileUrl('read-more.css'));
		Minz_View::appendScript($this->getFileUrl('read-more.js'));
		$this->registerHook(Minz_HookType::JsVars, $this->jsVars(...));
	}

	public static function clampHeight(int $height): int {
		return max(self::MIN_HEIGHT, min(self::MAX_HEIGHT, $height));
	}

	public function getCollapsedHeight(): int {
		return self::clampHeight($this->getUserConfigurationInt('collapsed_height') ?? self::DEFAULT_HEIGHT);
	}

	/**
	 * Pass parameters to read-more.js via `window.context.extensions`.
	 * @param array<mixed> $vars
	 * @return array<mixed>
	 */
	public function jsVars(array $vars): array {
		$vars['read_more'] = [
			'collapsed_height' => $this->getCollapsedHeight(),
			'label' => _t('ext.read_more.button'),
		];
		return $vars;
	}

	#[\Override]
	public function handleConfigureAction(): void {
		$this->registerTranslates();
		if (Minz_Request::isPost()) {
			$height = Minz_Request::paramInt('collapsed_height') ?: self::DEFAULT_HEIGHT;
			$this->setUserConfigurationValue('collapsed_height', self::clampHeight($height));
		}
	}
}