<?php

declare(strict_types=1);

require dirname(__DIR__) . '/vendor/autoload.php';

$dotenv = Dotenv\Dotenv::createImmutable(dirname(__DIR__));
$dotenv->safeLoad();

$dsn = sprintf(
    'mysql:host=%s;port=%s;dbname=%s;charset=%s',
    $_ENV['DB_HOST'] ?? '127.0.0.1',
    $_ENV['DB_PORT'] ?? '3306',
    $_ENV['DB_DATABASE'] ?? '',
    $_ENV['DB_CHARSET'] ?? 'utf8mb4'
);

$pdo = new PDO(
    $dsn,
    $_ENV['DB_USERNAME'] ?? '',
    $_ENV['DB_PASSWORD'] ?? '',
    [
        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
        PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
    ]
);

function hasColumn(PDO $pdo, string $table, string $column): bool
{
    $stmt = $pdo->prepare('SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = ? AND COLUMN_NAME = ?');
    $stmt->execute([$table, $column]);
    return (int)$stmt->fetchColumn() > 0;
}

function hasIndex(PDO $pdo, string $table, string $index): bool
{
    $stmt = $pdo->prepare('SELECT COUNT(*) FROM information_schema.STATISTICS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = ? AND INDEX_NAME = ?');
    $stmt->execute([$table, $index]);
    return (int)$stmt->fetchColumn() > 0;
}

function hasSystemConfig(PDO $pdo, string $group, string $key): bool
{
    $stmt = $pdo->prepare('SELECT COUNT(*) FROM system_configs WHERE config_group = ? AND config_key = ?');
    $stmt->execute([$group, $key]);
    return (int)$stmt->fetchColumn() > 0;
}

$now = date('Y-m-d H:i:s');

if (!hasColumn($pdo, 'reports', 'report_type')) {
    $pdo->exec("ALTER TABLE reports ADD COLUMN report_type VARCHAR(32) NOT NULL DEFAULT 'appraisal' AFTER appraisal_no");
    echo "ADD_COLUMN reports.report_type\n";
}

if (!hasIndex($pdo, 'reports', 'idx_reports_report_type')) {
    $pdo->exec("ALTER TABLE reports ADD KEY idx_reports_report_type (report_type)");
    echo "ADD_INDEX reports.idx_reports_report_type\n";
}

$pdo->exec("UPDATE reports SET report_type = 'appraisal' WHERE report_type = '' OR report_type IS NULL");

if (!hasSystemConfig($pdo, 'h5', 'page_base_url')) {
    $stmt = $pdo->prepare('INSERT INTO system_configs (config_group, config_key, config_value, remark, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?)');
    $stmt->execute(['h5', 'page_base_url', '', '后台系统配置', $now, $now]);
    echo "ADD_CONFIG h5.page_base_url\n";
}

echo "SCHEMA_UPGRADE_OK\n";