<?php

class UOJProblemConfigure {
	public UOJProblem $problem;
	public UOJProblemConf $problem_conf;
	public string $href;

	public array $conf_keys;
	public UOJForm $simple_form;

	public static $supported_checkers = [
		'ownchk' => '自定义校验器',
		'ncmp' => 'ncmp: 单行或多行整数序列',
		'wcmp' => 'wcmp: 单行或多行字符串序列',
		'fcmp' => 'fcmp: 单行或多行数据（不忽略行末空格，但忽略文末回车）',
		'bcmp' => 'bcmp: 逐字节比较',
		'uncmp' => 'uncmp: 单行或多行整数集合',
		'yesno' => 'yesno: YES、NO 序列（不区分大小写）',
		'rcmp4' => 'rcmp4: 浮点数序列，绝对或相对误差在 1e-4 以内则视为答案正确',
		'rcmp6' => 'rcmp6: 浮点数序列，绝对或相对误差在 1e-6 以内则视为答案正确',
		'rcmp9' => 'rcmp9: 浮点数序列，绝对或相对误差在 1e-9 以内则视为答案正确',
	];

	public static $supported_score_types = [
		'int' => '整数，每个测试点的部分分向下取整',
		'real-0' => '整数，每个测试点的部分分四舍五入到整数',
		'real-1' => '实数，四舍五入到小数点后 1 位',
		'real-2' => '实数，四舍五入到小数点后 2 位',
		'real-3' => '实数，四舍五入到小数点后 3 位',
		'real-4' => '实数，四舍五入到小数点后 4 位',
		'real-5' => '实数，四舍五入到小数点后 5 位',
		'real-6' => '实数，四舍五入到小数点后 6 位',
		'real-7' => '实数，四舍五入到小数点后 7 位',
		'real-8' => '实数，四舍五入到小数点后 8 位',
	];

	private static function getCardHeader($title) {
		return <<<EOD
		<div class="col-12 col-md-6">
			<div class="card">
				<div class="card-header fw-bold">
					{$title}
				</div>
				<div class="card-body vstack gap-3">
		EOD;
	}

	private static function getCardFooter() {
		return <<<EOD
				</div>
			</div>
		</div>
		EOD;
	}

	public function __construct(UOJProblem $problem) {
		$this->problem = $problem;
		$problem_conf = $this->problem->getProblemConf('data');
		if (!($problem_conf instanceof UOJProblemConf)) {
			$problem_conf = new UOJProblemConf([]);
		}
		$this->problem_conf = $problem_conf;

		$this->href = "/problem/{$this->problem->info['id']}/manage/data";

		$this->simple_form = new UOJForm('simple');

		$this->simple_form->appendHTML(static::getCardHeader('基本信息'));
		$this->addSelect($this->simple_form, 'use_builtin_judger', ['on' => '默认', 'off' => '自定义 Judger'], '测评逻辑', 'on');
		$this->addSelect($this->simple_form, 'use_builtin_checker', self::$supported_checkers, '比对函数', 'ncmp');
		$this->addSelect($this->simple_form, 'score_type', self::$supported_score_types, '测试点分数数值类型', 'int');
		$this->simple_form->appendHTML(static::getCardFooter());

		$this->simple_form->appendHTML(static::getCardHeader('数据配置'));
		$this->addNumberInput($this->simple_form, 'n_tests', '数据点个数', 10);
		$this->addNumberInput($this->simple_form, 'n_ex_tests', '额外数据点个数', 0);
		$this->addNumberInput($this->simple_form, 'n_sample_tests', '样例数据点个数', 0);
		$this->simple_form->appendHTML(static::getCardFooter());

		$this->simple_form->appendHTML(static::getCardHeader('文件配置'));
		$this->addTextInput($this->simple_form, 'input_pre', '输入文件名称', '');
		$this->addTextInput($this->simple_form, 'input_suf', '输入文件后缀', '');
		$this->addTextInput($this->simple_form, 'output_pre', '输出文件名称', '');
		$this->addTextInput($this->simple_form, 'output_suf', '输出文件后缀', '');
		$this->simple_form->appendHTML(static::getCardFooter());

		$this->simple_form->appendHTML(static::getCardHeader('运行时限制'));
		$this->addTimeLimitInput($this->simple_form, 'time_limit', '时间限制', 1, ['help' => '单位为秒，至多三位小数。']);
		$this->addNumberInput($this->simple_form, 'memory_limit', '内存限制', 256, ['help' => '单位为 MiB。']);
		$this->addNumberInput($this->simple_form, 'output_limit', '输出长度限制', 64, ['help' => '单位为 MiB。']);
		$this->simple_form->appendHTML(static::getCardFooter());

		$this->simple_form->succ_href = $this->href;
		$this->simple_form->config['form']['class'] = 'row gy-3 mt-2';
		$this->simple_form->config['submit_container']['class'] = 'col-12 text-center mt-3';
		$this->simple_form->config['back_button']['href'] = $this->href;
		$this->simple_form->config['back_button']['class'] = 'btn btn-secondary me-2';

		$this->simple_form->handle = fn (&$vdata) => $this->onUpload($vdata);
	}

	public function addSelect(UOJForm $form, $key, $options, $label, $default_val = '', $cfg = []) {
		$this->conf_keys[$key] = true;
		$form->addSelect($key, [
			'options' => $options,
			'label' => $label,
			'div_class' => 'row',
			'label_class' => 'col-form-label col-4',
			'select_div_class' => 'col-8',
			'default_value' => $this->problem_conf->getVal($key, $default_val),
		] + $cfg);
	}

	public function addNumberInput(UOJForm $form, $key, $label, $default_val = '', $cfg = []) {
		$this->conf_keys[$key] = true;
		$form->addInput($key, [
			'type' => 'number',
			'label' => $label,
			'div_class' => 'row',
			'label_class' => 'col-form-label col-4',
			'input_div_class' => 'col-8',
			'default_value' => $this->problem_conf->getVal($key, $default_val),
			'validator_php' => function ($x) {
				return validateInt($x) ? '' : '必须为一个整数';
			},
		] + $cfg);
	}

	public function addTimeLimitInput(UOJForm $form, $key, $label, $default_val = '', $cfg = []) {
		$this->conf_keys[$key] = true;
		$form->addInput($key, [
			'type' => 'number',
			'label' => $label,
			'input_attrs' => ['step' => 0.001],
			'div_class' => 'row',
			'label_class' => 'col-form-label col-4',
			'input_div_class' => 'col-8',
			'default_value' => $this->problem_conf->getVal($key, $default_val),
			'validator_php' => function ($x) {
				if (!validateUFloat($x)) {
					return '必须为整数或小数，且值大于等于零';
				} elseif (round($x * 1000) != $x * 1000) {
					return '至多包含三位小数';
				} else {
					return '';
				}
			},
		] + $cfg);
	}

	public function addTextInput(UOJForm $form, $key, $label, $default_val = '', $cfg = []) {
		$this->conf_keys[$key] = true;
		$form->addInput($key, [
			'label' => $label,
			'div_class' => 'row',
			'label_class' => 'col-form-label col-4',
			'input_div_class' => 'col-8',
			'default_value' => $this->problem_conf->getVal($key, $default_val),
			'validator_php' => function ($x) {
				return ctype_graph($x) ? '' : '必须仅包含除空格以外的可见字符';
			},
		] + $cfg);
	}

	public function runAtServer() {
		$this->simple_form->runAtServer();
	}

	public function onUpload(array &$vdata) {
		$conf = $this->problem_conf->conf;

		foreach (array_keys($this->conf_keys) as $key) {
			$val = UOJRequest::post($key);
			if ($key === 'use_builtin_judger') {
				if ($val === 'off') {
					unset($conf[$key]);
				} else {
					$conf[$key] = $val;
				}
			} elseif ($key === 'use_builtin_checker') {
				if ($val === 'ownchk') {
					unset($conf[$key]);
				} else {
					$conf[$key] = $val;
				}
			} else {
				if ($val !== '') {
					$conf[$key] = $val;
				}
			}
		}

		$err = dataUpdateProblemConf($this->problem->info, $conf);
		if ($err) {
			UOJResponse::message('<div>' . $err . '</div><a href="' . $this->href . '">返回</a>');
		}
	}

	public function printHTML() {
		$this->simple_form->printHTML();
	}
}