<?php

declare(strict_types=1);

/** 
 * @author Robert Strutts <Robert@TryingToScale.com>
 * @copyright Copyright (c) 2022, Robert Strutts.
 * @license https://mit-license.org/
 */

namespace main_tts;

unset($_REQUEST); // Request is dangerious
unset($_GET);
unset($_POST);

$mem_baseline = memory_get_usage();

const TTS_FRAMEWORK = __DIR__ . '/';
$up_one = dirname(__DIR__, 1);
define("TTS_VENDOR", $up_one . "/vendor/");

final class views {
    public static function ob_start(): void {
      if (extension_loaded('mbstring')) {
        ob_start('mb_output_handler');
      } else {
        ob_start();
      }
    }
}

if (\bs_tts\site_helper::get_testing() === false) {
    views::ob_start();
}

final class configure {

    private static $config = [];

    protected function __construct() {
        
    }

    public static function exists() { // an Alias to has
        return self::has(func_get_args());
    }
    
    public static function has(string $name, $key = false): bool {
        if ($key === false) {
            return (isset(self::$config[strtolower($name)])) ? true : false;
        }
        return (isset(self::$config[strtolower($name)][strtolower($key)])) ? true : false;
    }    
    
    public static function get(string $name, $key = false) {
        if (isset(self::$config[strtolower($name)])) {
            $a = self::$config[strtolower($name)];
            if ($key === false) {
                return $a;
            }
            if (isset($a[$key])) {
                return $a[$key];
            }
        }
        return null;
    }

    public static function update() { // an Alias to set
        return self::set(func_get_args());
    }

    public static function set(string $name, $value): void {
        self::$config[strtolower($name)] = $value;
    }
    
    public static function set_key(string $name, string $key, $value): void {
        self::$config[strtolower($name)][strtolower($key)] = $value;
    }

    public static function add_to_key(string $name, string $key, $value): void {
        self::$config[strtolower($name)][strtolower($key)][] = $value;
    }

    public static function wipe(string $name, $key = false): void {
        if (! self::exists($name, $key))  {
            return;
        }
        if ($key === false) {
            \bs_tts\common::wipe(self::$config[strtolower($name)]);
        }
        \bs_tts\common::wipe(self::$config[strtolower($name)][strtolower($key)]);
    }

    public static function load_array(array $a): void {
        if (isset($a) && is_array($a)) {
            foreach ($a as $name => $value) {
                self::$config[$name] = $value;
            }
        }
        unset($a);
    }

}

final class registry {

    private static $registry = [];

    protected function __construct() {
        
    }

    public static function get(string $name, $key = false) {
        if (isset(self::$registry[strtolower($name)])) {
            $a = self::$registry[strtolower($name)];
            if ($key === false) {
                return $a;
            }
            if (isset($a[$key])) {
                return $a[$key];
            }
        }
        return null;
    }

    public static function set(string $name, $value): bool {
        if (array_key_exists(strtolower($name), self::$registry)) {
            return false;
        }
        self::$registry[strtolower($name)] = $value;
        return true;
    }

}

final class di {

    protected $services = [];

    public function register(string $service_name, callable $callable): void {
        $this->services[$service_name] = $callable;
    }

    public function has(string $service_name): bool {
        return (array_key_exists($service_name, $this->services));
    }
    
    public function exists(string $service_name) { // an Alias to has
        return $this->has($service_name);
    }
    
    /* Note args may be an object or an array maybe more...!
     * This will Call/Execute the service
     */
    public function get_service(
        string $service_name, 
        $args = [], 
        ...$more
    ) {
        if ($this->has($service_name) ) {
            return $this->services[$service_name]($args, $more);
        }
        return $this->resolve($service_name); // Try to Auto-Wire
    }

    public function get_auto(string $service_name) {
        if ($this->has($service_name) ) {
           return $this->services[$service_name]($this);
        }
        return $this->resolve($service_name); // Try to Auto-Wire
    }
    
    public function __set(string $service_name, callable $callable): void {
        $this->register($service_name, $callable);
    }

    public function __get(string $service_name) {
        return $this->get_service($service_name);
    }
    
    public function list_services_as_array(): array {
        return array_keys($this->services);
    }

    public function list_services_as_string(): string {
        return implode(',', array_keys($this->services));
    }
    
    public function resolve(string $service_name) {
        try {
            $reflection_class = new \ReflectionClass($service_name);
        } catch (\ReflectionException $e) {
            if (! \main_tts\configure::set('tts', 'live')) {
                var_dump($e->getTrace());
                echo $e->getMessage(); 
                exit;
            }
        }
        if (! $reflection_class->isInstantiable()) {
            throw new \Exception("The Service class: {$service_name} is not instantiable.");
        }
        $constructor = $reflection_class->getConstructor();
        if (! $constructor) {
            return new $service_name;
        }
        $parameters = $constructor->getParameters();
        if (! $parameters) {
            return new $service_name;
        }
        $dependencies = array_map(
            function(\ReflectionParameter $param) {
                $name = $param->getName();
                $type = $param->getType();
                if (! $type) {
                    throw new \Exception("Failed to resolve class: {$service_name} becasue param {$name} is missing a type hint.");
                }
                if ($type instanceof \ReflectionUnionType) {
                    throw new \Exception("Failed to resolve class: {$service_name} because of union type for param {$name}.");
                }
                if ($type instanceof \ReflectionNamedType && ! $type->isBuiltin()) {
                    return $this->get_auto($type->getName());
                }
                
                throw new \Exception("Failed to resolve class {$service_name} because of invalid param {$param}.");
            }, $parameters
        );
        return $reflection_class->newInstanceArgs($dependencies);
    }

}

// Initialize our Dependency Injector
registry::set('di', new di());

// Setup php for working with Unicode data, if possible
if (extension_loaded('mbstring')) {
    mb_internal_encoding('UTF-8');
    mb_http_output('UTF-8');
    mb_language('uni');
    mb_regex_encoding('UTF-8');
    setlocale(LC_ALL, "en_US.UTF-8");
}

require_once TTS_FRAMEWORK . 'bootstrap/errors.php';
require_once TTS_FRAMEWORK . 'bootstrap/common.php';
require_once TTS_FRAMEWORK . 'bootstrap/requires.php';
require_once TTS_FRAMEWORK . 'bootstrap/auto_loader.php';

registry::set('loader', new \Psr4AutoloaderClass);
registry::get('loader')->register();
registry::get('loader')->add_namespace("bs_tts", TTS_FRAMEWORK . "bootstrap");
registry::get('loader')->add_namespace("tts", TTS_FRAMEWORK . "classes");
registry::get('loader')->add_namespace("tts", TTS_FRAMEWORK . "tests");

\bs_tts\site_helper::set_project_namespace();