<?php

namespace Automad\System;

use Automad\Core\Debug;
use Automad\Core\FileSystem;
use Automad\Core\Str;

/**
 * The theme collection system class.
 *
 * @author Marc Anton Dahmen
 * @copyright Copyright (c) 2018-2023 by Marc Anton Dahmen - https://marcdahmen.de
 * @license MIT license - https://automad.org/license
 */
class ThemeCollection
{
	/** An array of installed Composer packages. */
	private array $composerInstalled;

	/** The Theme objects array. */
	private array $themes;


	/**
	 * The constructor.
	 */
	public function __construct()
	{
		$this->composerInstalled = $this->getComposerInstalled();
		$this->themes = $this->collectThemes();
		Debug::log($this->themes, 'New instance created');
	}


	/**
	 * Get the theme object by the key in the themelist array
	 * 	corresponding to the Fields::THEME variable.
	 *
	 * @param string $key
	 * @return Theme|null The requested theme object
	 */
	public function getThemeByKey(string $key): ?Theme
	{
		if ($key && array_key_exists($key, $this->themes)) {
			return $this->themes[$key];
		}

		return null;
	}


	/**
	 * Return the Theme objects array.
	 *
	 * @see Theme
	 * @return array The array of Theme objects
	 */
	public function getThemes(): array
	{
		return $this->themes;
	}


	/**
	 * Collect installed themes recursively.
	 *
	 * A theme must be located below the "themes" directory.
	 * It is possible to group themes in subdirectories, like "themes/theme" or "themes/subdir/theme".
	 *
	 * To be a valid theme, a directory must contain a "theme.json" file and at least one ".php" file.
	 *
	 * @param string|null $path
	 * @return array An array containing all themes as objects.
	 */
	private function collectThemes(?string $path = null): array
	{
		if (!$path) {
			$path = AM_BASE_DIR . AM_DIR_PACKAGES;
		}

		$themes = array();

		foreach (FileSystem::glob($path . '/*', GLOB_ONLYDIR) as $dir) {
			if (strpos($dir, 'node_modules') === false) {
				$themeJSON = $dir . '/theme.json';
				$templates = FileSystem::glob($dir . '/*.php');

				if (is_readable($themeJSON) && $templates) {
					// If a theme.json file and at least one .php file exist, use that directoy as a theme.
					$path = Str::stripStart(dirname($themeJSON), AM_BASE_DIR . AM_DIR_PACKAGES . '/');
					$themes[$path] = new Theme($themeJSON, $this->composerInstalled);
				} else {
					// Else check subdirectories for theme.json files.
					$themes = array_merge($themes, $this->collectThemes($dir));
				}
			}
		}

		return $themes;
	}


	/**
	 * Get installed Composer packages.
	 *
	 * @return array An associative array of installed Composer packages
	 */
	private function getComposerInstalled(): array
	{
		$installedJSON = AM_BASE_DIR . '/vendor/composer/installed.json';
		$installed = array();

		if (is_readable($installedJSON)) {
			$decoded = @json_decode(file_get_contents($installedJSON), true);

			if (is_array($decoded) && !empty($decoded['packages'])) {
				$packages = $decoded['packages'];
				foreach ($packages as $package) {
					if (array_key_exists('name', $package)) {
						$name = $package['name'];
						$installed[$name] = $package;
					}
				}
			}
		}

		return $installed;
	}
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NjQ5MzM0NTAwMzg1NTIyMyA1MTk2ODUxMDQxMTM4NDcyIDI5NzYzODUwODg5MTIyNTk=