<?php

defined('ABSPATH') || exit;

class AIEO_Docs_Registry {

	
	const INDEX_FILE     = 'includes/dmm/data/documentation-index.json';
	const INDEX_FILE_DEV = 'docs/documentation-index.json';

	
	private static $memo = null;

	
	public static function all() {
		if (is_array(self::$memo)) { return self::$memo; }

		$path = self::index_path();
		if (!$path || !is_readable($path)) { self::$memo = array(); return self::$memo; }

		$raw = json_decode((string) file_get_contents($path), true);
		self::$memo = (is_array($raw) && isset($raw['capabilities']) && is_array($raw['capabilities']))
			? $raw['capabilities']
			: array();
		return self::$memo;
	}

	
	private static function index_path() {
		$root = defined('AIEO_PLUGIN_DIR')
			? AIEO_PLUGIN_DIR
			: dirname(dirname(__DIR__)) . '/';
		$root = rtrim((string) $root, '/\\');
		if ('' === $root) { return ''; }

		foreach (array(self::INDEX_FILE, self::INDEX_FILE_DEV) as $rel) {
			$path = $root . '/' . $rel;
			if (is_readable($path)) { return $path; }
		}
		return '';
	}

	
	public static function flush() { self::$memo = null; }

	
	public static function manual_url($lang = '') {
		if ('' === $lang) {
			$locale = function_exists('get_user_locale') ? get_user_locale() : get_locale();
			$lang   = strtolower(substr((string) $locale, 0, 2));
		}
		
		
		$lang = ('el' === $lang) ? 'el' : 'en';
		return 'https://rooster.systems/category/' . $lang . '/documentation/rooster-one/';
	}

	
	public static function get($capability_id, $lang = 'en') {
		$all = self::all();
		if (isset($all[$capability_id][$lang])) { return $all[$capability_id][$lang]; }

		
		
		
		
		
		
		
		
		$aliases = apply_filters('aieo_docs_capability_aliases', array());
		if (isset($aliases[$capability_id]) && isset($all[$aliases[$capability_id]][$lang])) {
			return $all[$aliases[$capability_id]][$lang];
		}
		return null;
	}

	
	public static function coverage($lang = 'en') {
		if (!class_exists('AIEO_Capability_Registry')) {
			return array('documented' => 0, 'undocumented' => 0, 'total' => 0, 'percent' => 0.0);
		}
		$caps = AIEO_Capability_Registry::all();
		$doc  = 0;
		foreach ($caps as $id => $row) {
			if (self::get($id, $lang)) { $doc++; }
		}
		$total = count($caps);
		return array(
			'documented'   => $doc,
			'undocumented' => $total - $doc,
			'total'        => $total,
			'percent'      => $total ? round($doc * 100 / $total, 1) : 0.0,
		);
	}

	
	public static function stale($lang = 'en') {
		$out = array('stale' => array(), 'missing' => array());
		if (!class_exists('AIEO_Capability_Registry')) { return $out; }

		$current = defined('AIEO_VERSION') ? AIEO_VERSION : '0';
		foreach (AIEO_Capability_Registry::all() as $id => $row) {
			$rec = self::get($id, $lang);
			if (!$rec) {
				$out['missing'][] = array(
					'id'    => $id,
					'label' => isset($row['label']) ? $row['label'] : $id,
					'kind'  => isset($row['kind']) ? $row['kind'] : '',
				);
				continue;
			}
			$was = isset($rec['plugin_version']) ? (string) $rec['plugin_version'] : '0';
			if (version_compare($was, $current, '<')) {
				$out['stale'][] = array(
					'id'              => $id,
					'label'           => isset($row['label']) ? $row['label'] : $id,
					'kind'            => isset($row['kind']) ? $row['kind'] : '',
					'documented_at'   => $was,
					'current_version' => $current,
					'url'             => isset($rec['url']) ? $rec['url'] : '',
				);
			}
		}
		return $out;
	}

	
	public static function for_action($action_id, $tab_id = '', $lang = 'en') {
		$action_id = (string) $action_id;
		if ($action_id === '') { return null; }

		$page = strpos($action_id, '.') !== false
			? substr($action_id, 0, strpos($action_id, '.'))
			: '';

		$tries = array(
			'action' => 'action:' . $page . ':' . $action_id,
		);
		if ($tab_id !== '' && $page !== '') { $tries['tab'] = 'tab:' . $page . ':' . $tab_id; }
		if ($page !== '') { $tries['page'] = $page; }

		foreach ($tries as $level => $cap_id) {
			$rec = self::get($cap_id, $lang);
			if ($rec) { return array_merge($rec, array('matched' => $level, 'capability' => $cap_id)); }
		}
		return null;
	}

	
	public static function summary($lang = 'en') {
		$c = self::coverage($lang);
		$s = self::stale($lang);
		return sprintf(
			
			__('%1$d of %2$d capabilities documented (%3$s%%); %4$d need re-publishing', 'ai-eshop-optimizer'),
			$c['documented'], $c['total'], $c['percent'], count($s['stale'])
		);
	}
}