<?php

function createContext(): Context {
    // Load configuration with fallback: custom -> default
    $defaultConfig = __DIR__ . '/default/config.ini';
    $customConfig = __DIR__ . '/../custom/config.ini';
    
    // Start with default config
    $config = file_exists($defaultConfig) ? parse_ini_file($defaultConfig, true) : [];
    
    // Merge with custom config if it exists
    if (file_exists($customConfig)) {
        $config = array_replace_recursive($config, parse_ini_file($customConfig, true) ?: []);
    }

    // Load global plugins
    getPluginManager()->loadGlobalPlugins($config);

    // Use user content if exists and has content, otherwise fall back to demo content
    $userContentDir = $_SERVER['DOCUMENT_ROOT'];
    $demoContentDir = __DIR__ . '/default/content';

    // Check if user content directory has actual content (more than just . and ..)
    $hasUserContent = is_dir($userContentDir) && count(scandir($userContentDir) ?: []) > 2;

    $contentDir = $hasUserContent ? realpath($userContentDir) : realpath($demoContentDir);

    // Extract request information
    $requestUri = parse_url($_SERVER['REQUEST_URI'] ?? '', PHP_URL_PATH) ?: '/';
    $hasTrailingSlash = str_ends_with($requestUri, '/') && $requestUri !== '/';
    $requestPath = trim($requestUri, '/');

    // Resolve templates with custom fallback to defaults
    $templates = new Templates(
        base: resolveTemplate('base'),
        page: resolveTemplate('page'),
        list: resolveTemplate('list')
    );

    // Create base context
    $ctx = new Context(
        contentDir: $contentDir,
        templates: $templates,
        requestPath: $requestPath,
        hasTrailingSlash: $hasTrailingSlash
    );

    // Store globally for plugins
    $GLOBALS['ctx'] = $ctx;

    // Let plugins modify context (e.g., extract language from URL)
    $ctx = Hooks::apply(Hook::CONTEXT_READY, $ctx, $config);

    return $ctx;
}