<?php

namespace App\Service;

use JumPHP\Kernel\Engine;
use JumPHP\Renderer\Renderer;
use JumPHP\Renderer\TtfFont;
use JumPHP\Util\Lang;

/**
 * The text of the game: a TrueType font that has the letters of the current language (Latin and Cyrillic: Lato;
 * Japanese and Chinese, Korean: subsets made by tools/fonts.py with the characters of config/lang.yaml).
 */
final class Fonts
{
    private const FILES = ['ja' => 'cjk', 'zh' => 'cjk', 'ko' => 'ko'];
    /** @var array<string, TtfFont> */
    private array $fonts = [];

    public function font(Engine $engine): TtfFont
    {
        $file = self::FILES[$engine->lang->getLang()] ?? 'ui';
        return $this->fonts[$file] ??= new TtfFont($engine->sdl, "assets/fonts/$file.ttf", 10, smooth: true);
    }

    /** Translated text with a crisp dark shadow. $align: left | center | right. */
    public function text(Engine $engine, Renderer $r, string $key, float $x, float $y, float $scale = 1, array|string $color = [255, 255, 255],
                         string $align = 'left', array $params = [], array|string|null $outline = [20, 12, 40]): void
    {
        $this->print($engine, $r, Lang::t($key, $params), $x, $y, $scale, $color, $align, $outline);
    }

    /** Text as it is (numbers), placed on whole real pixels so that it stays sharp. */
    public function print(Engine $engine, Renderer $r, string $text, float $x, float $y, float $scale = 1, array|string $color = [255, 255, 255],
                          string $align = 'left', array|string|null $shadow = [20, 12, 40]): void
    {
        $font = $this->font($engine);
        $k = max(1, $r->hd());
        if ($align !== 'left') {
            $x -= $font->width($text, $scale) * ($align === 'center' ? 0.5 : 1);
        }
        $font->draw($r, $text, round($x * $k) / $k, round($y * $k) / $k, $scale, $color, 'left', $shadow);
    }

    public function width(Engine $engine, string $key, float $scale = 1, array $params = []): int
    {
        return $this->font($engine)->width(Lang::t($key, $params), $scale);
    }
}