<?php
namespace Misuzu;

use InvalidArgumentException;
use Sasae\SasaeContext;
use Sasae\SasaeEnvironment;
use Misuzu\MisuzuContext;

final class Template {
    private const FILE_EXT = '.twig';

    private static SasaeEnvironment $env;
    private static array $vars = [];

    public static function init(SasaeEnvironment $env): void {
        self::$env = $env;
    }

    public static function addFunction(string $name, callable $body): void {
        self::$env->addFunction($name, $body);
    }

    public static function renderRaw(string $file, array $vars = []): string {
        if(!defined('MSZ_TPL_RENDER'))
            define('MSZ_TPL_RENDER', microtime(true));

        if(!str_ends_with($file, self::FILE_EXT))
            $file = str_replace('.', DIRECTORY_SEPARATOR, $file) . self::FILE_EXT;

        return self::$env->render($file, array_merge(self::$vars, $vars));
    }

    public static function render(string $file, array $vars = []): void {
        echo self::renderRaw($file, $vars);
    }

    public static function set($arrayOrKey, $value = null): void {
        if(is_string($arrayOrKey))
            self::$vars[$arrayOrKey] = $value;
        elseif(is_array($arrayOrKey))
            self::$vars = array_merge(self::$vars, $arrayOrKey);
        else
            throw new InvalidArgumentException('First parameter must be of type array or string.');
    }

    public static function displayInfo(?string $message, int $statusCode, ?string $template = null): never {
        http_response_code($statusCode);

        self::$vars['http_code'] = $statusCode;
        if(!empty($message))
            self::$vars['message'] = $message;

        self::render(sprintf($template ?? 'errors.%d', $statusCode));
        exit;
    }

    public static function throwError(int $statusCode, ?string $template = null): never {
        self::displayInfo(null, $statusCode, $template);
    }
}