<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Round extends Model
{
	use HasFactory;


	public function updatePlacement() {
		$runners = [];
		foreach ($this->tournament->participants as $p) {
			if ($p->isRunner()) {
				$runners[] = $p;
			} else {
				$result = $p->findResult($this);
				if ($result) {
					$result->updatePlacement(null, null);
				}
			}
		}

		usort($runners, Participant::compareResult($this));
		$mapped = array_map(function ($p) {
			return ['participant' => $p, 'result' => $p->findResult($this)];
		}, $runners);
		$filtered = array_filter($mapped, function($r) {
			return $r['result'] && ($r['result']->time || $r['result']->forfeit);
		});
		$reversed = array_reverse($filtered);

		$running = 0;
		$bonus = 1;
		$lastResult = null;
		foreach ($reversed as $r) {
			$betterThanLast = is_null($lastResult) || $r['result']->time < $lastResult;
			if (!$r['result']->forfeit && $betterThanLast) {
				$running += $bonus;
				$lastResult = $r['result']->time;
				$bonus = 1;
			} else {
				++$bonus;
			}
			if (!$r['result']->forfeit) {
				$r['result']->updatePlacement($running, count($filtered) - $running + 1);
			} else {
				$r['result']->updatePlacement(0, count($filtered));
			}
		}
	}


	public function results() {
		return $this->hasMany(Result::class);
	}

	public function tournament() {
		return $this->belongsTo(Tournament::class);
	}


	protected $casts = [
		'code' => 'array',
		'locked' => 'boolean',
	];

	protected $fillable = [
		'number',
		'tournament_id',
	];

}