<?php

namespace App\Data;

/** The hall of fame: the table of today (in memory) and the all-time table (persisted). A port of modern/src/hall.cpp. */
final class Hall
{
    public const NAME_MAX = 16;
    private const LETTERS = '<>!ABCDEFGHIJKLMNOPQRSTUVWXYZ.';
    public const NUM_LETTERS = 30;

    /** @var array<int, array{0: string, 1: int}> */
    private array $today = [];
    /** @var array<int, array{0: string, 1: int}> */
    private array $allTime = [];

    public function __construct(private Assets $A, private \JumPHP\Save\Storage $storage)
    {
        $this->today = $A->hallToday;
        $saved = $this->storage->readJson('sorcery-halloffame.json');
        $this->allTime = is_array($saved) && $saved !== [] ? $saved : $A->hallAllTime;
    }

    /** @return array<int, array{0: string, 1: int}> */
    public function today(): array
    {
        return $this->today;
    }

    /** @return array<int, array{0: string, 1: int}> */
    public function allTime(): array
    {
        return $this->allTime;
    }

    /** The typed letters become the name: the '.' key is a space, forbidden words are replaced. */
    public function clean(string $typed): string
    {
        $n = str_replace('.', '', $typed);
        $i = 0;
        foreach ($this->A->forbiddenNames as $w) {
            if (strlen($n) >= strlen($w) && substr($n, 0, strlen($w)) === $w) {
                return str_replace('.', ' ', $this->A->replacementNames[$i + 1] ?? $n);
            }
            $i++;
        }
        return $n === '' ? 'QUI EST LA?' : $n;
    }

    /** The place of a score in a table (0 = best), or -1. Equal scores: the older entry stays above. */
    public function rank(int $score, bool $allTime): int
    {
        $t = $allTime ? $this->allTime : $this->today;
        foreach ($t as $i => $e) {
            if ($e[1] < $score) {
                return $i;
            }
        }
        return -1;
    }

    /** Inserts {name, score} into both tables (if it is good enough). */
    public function insert(string $name, int $score): void
    {
        foreach ([false, true] as $all) {
            $rank = $this->rank($score, $all);
            if ($rank < 0) {
                continue;
            }
            $t = $all ? $this->allTime : $this->today;
            array_splice($t, $rank, 0, [[$name, $score]]);
            array_splice($t, 7);
            if ($all) {
                $this->allTime = $t;
                $this->storage->writeJson('sorcery-halloffame.json', $t);
            } else {
                $this->today = $t;
            }
        }
    }
}