<?php
$rootpath = dirname(dirname(__DIR__)) . '/';
define('ROOT_PATH', $rootpath);
require ROOT_PATH . 'nexus/Install/install_update_start.php';

$isPost = $_SERVER['REQUEST_METHOD'] == 'POST';
$install = new \Nexus\Install\Install();
$currentStep = $install->currentStep();
$maxStep = $install->maxStep();
if (!$install->canAccessStep($currentStep)) {
    $install->gotoStep(1);
}
$error = $copy = '';
$pass = true;

//step 1
if ($currentStep == 1) {
    $requirements = $install->listRequirementTableRows();
    $pass = $requirements['pass'];
    if ($isPost) {
        $install->nextStep();
    }
}

if ($currentStep == 2) {
    $envExampleFile = $rootpath . ".env.example";
    $envExampleData = readEnvFile($envExampleFile);
    $envFormControls = $install->listEnvFormControls();
    $newData = array_column($envFormControls, 'value', 'name');
    while ($isPost) {
        try {
            $install->createEnvFile($_POST);
            $install->nextStep();
        } catch (\Exception $exception) {
            $error = $exception->getMessage();
            break;
        }
        break;
    }
    $tableRows = [
        [
            'label' => basename($envExampleFile),
            'required' => 'exists && readable',
            'current' => $envExampleFile,
            'result' =>  $install->yesOrNo(file_exists($envExampleFile) && is_readable($envExampleFile)),
        ],
    ];
    $fails = array_filter($tableRows, function ($value) {return $value['result'] == 'NO';});
    $pass = empty($fails);
}

if ($currentStep == 3) {
    $shouldCreateTable = $install->listShouldCreateTable();
    while ($isPost) {
        try {
//            $install->createTable($shouldCreateTable);
            $install->runMigrate();
            $install->nextStep();
        } catch (\Exception $exception) {
            $error = $exception->getMessage();
            break;
        }
        break;
    }
}

//if ($currentStep == 4) {
//    $pass = true;
//    while (true) {
//        $shouldAlterTable = listShouldAlterTable();
//        if ($isPost) {
//            if (!empty($shouldAlterTable)) {
//                try {
//                    sql_query('SET sql_mode=(SELECT REPLACE(@@sql_mode,"NO_ZERO_DATE", ""));');
//                    foreach ($shouldAlterTable as $table => $fields) {
//                        $sqlAlter = "alter table $table";
//                        $sqlUpdate = "update $table";
//                        $updateWhere = [];
//                        foreach ($fields as $field) {
//                            $sqlAlter .= " modify $field datetime default null,";
//                            $sqlUpdate .= " set $field = null,";
//                            $updateWhere[] = "$field = '0000-00-00 00:00:00'";
//                        }
//                        $sqlAlter = rtrim($sqlAlter, ',');
//                        $sqlUpdate = rtrim($sqlUpdate, ',') . " where " . implode(' or ', $updateWhere);
//                        sql_query($sqlUpdate);
//                        sql_query($sqlAlter);
//                    }
//                } catch (\Exception $e) {
//                    $error = $e->getMessage();
//                    break;
//                }
//            }
//            goStep($currentStep + 1);
//        }
//        break;
//    }
//}

if ($currentStep == 4) {
    $settingTableRows = $install->listSettingTableRows();
    $settings = $settingTableRows['settings'];
    $symbolicLinks = $settingTableRows['symbolic_links'];
    $tableRows = $settingTableRows['table_rows'];
    $pass = $settingTableRows['pass'];
    $mysqlInfo = $install->getMysqlVersionInfo();
    $redisInfo = $install->getREdisVersionInfo();
    while ($isPost) {
        set_time_limit(300);
        try {
            $install->createSymbolicLinks($symbolicLinks);
            $install->runDatabaseSeeder();
            $install->saveSettings($settings);
            $install->migrateSearchBoxModeRelated();
            $install->initTrackerUrl('install');
            $install->nextStep();
        } catch (\Exception $e) {
            $error = $e->getMessage();
            break;
        }
        break;
    }
}

if ($currentStep == 5) {
    if ($isPost) {
        try {
            $install->createAdministrator($_POST['username'], $_POST['email'], $_POST['password'], $_POST['confirm_password']);
            $install->nextStep();
        } catch (\Exception $exception) {
            $error = $exception->getMessage();
        }
    }
    $userFormControls = [
        ['label' => 'Username', 'name' => 'username', 'value' => $_POST['username'] ?? ''],
        ['label' => 'Email', 'name' => 'email', 'value' => $_POST['email'] ?? ''],
        ['label' => 'Password', 'name' => 'password', 'value' => $_POST['password'] ?? ''],
        ['label' => 'Re-password', 'name' => 'confirm_password', 'value' => $_POST['confirm_password'] ?? ''],
    ];
}

if (
    !empty($error)
    || (isset($mysqlInfo) && !$mysqlInfo['match'])
    || (isset($redisInfo) && !$redisInfo['match'])
) {
    $pass = false;
}
?>

<!doctype html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link href="https://unpkg.com/tailwindcss@^1.0/dist/tailwind.min.css" rel="stylesheet">
    <title>Install NexusPHP | step <?php echo $currentStep?></title>
  </head>
  <body>
      <div class="container mx-auto">
          <?php echo $install->renderSteps()?>
          <div class="mt-10">
              <form method="post" action="<?php echo getBaseUrl() . '?step=' . $currentStep?>">
              <input type="hidden" name="step" value="<?php echo $currentStep?>">
              <?php
              echo'<div class="step-' . $currentStep . ' text-center">';
              $header = [
                  'label' => 'Item',
                  'required' => 'Require',
                  'current' => 'Current',
                  'result' => 'Result'
              ];
                if ($currentStep == 1) {
                    echo $install->renderTable($header, $requirements['table_rows']);
                } elseif ($currentStep == 2) {
                    echo $install->renderTable($header, $tableRows);
                    echo $install->renderForm($envFormControls);
                } elseif ($currentStep == 3) {
                    echo '<h1 class="mb-4 text-lg font-bold">The following tables will be created</h1>';
                    if (empty($shouldCreateTable)) {
                        echo '<div class="text-green-600 text-center">Congratulations, all the required tables have been created!</div>';
                    } else {
                        echo sprintf('<div class="h-64 text-left inline-block w-2/3"><code class="bolck w-px-100">%s</code></div>', implode(', ', array_keys($shouldCreateTable)));
                    }
                } elseif ($currentStep == 4) {
                    echo $install->renderTable($header, $tableRows);
                    echo '<div class="text-blue-500 pt-10">';
                    echo sprintf('This step will merge <code>%s</code> to <code>%s</code>, then insert into database', $tableRows[1]['label'], $tableRows[0]['label']);
                    echo '</div>';
                    if (!$mysqlInfo['match']) {
                        echo sprintf('<div class="text-red-700 pt-10">MySQL version: %s is too low, please use the newest version of 5.7 or above.</div>', $mysqlInfo['version']);
                    }
                    if (!$redisInfo['match']) {
                        echo sprintf('<div class="text-red-700 pt-10">Redis version: %s is too low, please use 2.0.0 or above.</div>', $redisInfo['version']);
                    }
                } elseif ($currentStep == 5) {
                    echo $install->renderForm($userFormControls, '1/2', '1/4', '3/4');
                } elseif ($currentStep > $maxStep) {
                    echo '<div class="text-green-900 text-6xl p-10">Congratulations, everything is ready!</div>';
                    echo '<div class="mb-6">For questions, consult the installation log at: <code>' . $install->getLogFile() . '</code></div>';
                    echo '<div class="text-red-500">For security reasons, please delete the following directories</div>';
                    echo '<div class="text-red-500"><code>' . $install->getInsallDirectory() . '</code></div>';
                    $install->setLock();
                }
                echo'</div>';

              if (!empty($error)) {
                  echo sprintf('<div class="text-center text-red-500 p-4">Error: %s</div>', nl2br($error));
                  unset($error);
              }
              if (!empty($copy)) {
                  echo sprintf('<div class="text-center"><textarea class="w-1/2 h-40 border">%s</textarea></div>', $copy);
                  unset($copy);
              }
              ?>
              <div class="mt-2 text-center">
                  <button class="bg-blue-500 p-2 m-4 text-white rounded" type="button" onclick="goBack()">Prev</button>
                  <?php if ($currentStep <= $maxStep) {?>
                  <button class="bg-blue-<?php echo $pass ? 500 : 200;?> p-2 m-4 text-white rounded" type="submit" <?php echo $pass ? '' : 'disabled';?>>Next</button>
                  <?php } else {?>
                   <a class="bg-blue-500 p-2 m-4 text-white rounded" href="<?php echo getSchemeAndHttpHost()?>">Go to homepage</a>
                  <?php }?>
              </div>
              </form>
          </div>
      </div>
      <div class="m-2 text-center">
          Welcome to the NexusPHP installer, if you have any questions, click<a href="https://nexusphp.org/" target="_blank" class="text-blue-500 p-1">here</a>for help.
      </div>
  </body>
<script>
    function goBack() {
        window.location.search="step=<?php echo $currentStep == 1 ? 1 : $currentStep - 1?>"
    }
</script>
</html>
