<?php

namespace App\Http\Controllers\core;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Config;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\File;
use Symfony\Component\Process\Exception\ProcessFailedException;
use Symfony\Component\Process\Process;

class SqlInstallController extends Controller
{
    public function testConnection(Request $request)
    {
        $validated = $request->validate([
            'host' => 'required|string',
            'port' => 'required|integer',
            'database' => 'required|string',
            'username' => 'required|string',
            'password' => 'required|string',
        ]);

        // 创建临时配置
        config([
            'database.connections.install' => [
                'driver' => 'mysql',
                'host' => $validated['host'],
                'port' => $validated['port'],
                'database' => $validated['database'],
                'username' => $validated['username'],
                'password' => $validated['password'],
                'charset' => 'utf8mb4',
                'collation' => 'utf8mb4_unicode_ci',
                'prefix' => '',
                'prefix_indexes' => true,
                'strict' => true,
                'engine' => null,
            ]
        ]);

        try {
            // 使用临时连接测试
            DB::connection('install')->getPdo();

            return response()->json([
                'success' => true,
                'message' => '✅ 成功连接到数据库'
            ]);
        } catch (\Exception $e) {
            return response()->json([
                'success' => false,
                'message' => '❌ 连接失败: ' . $e->getMessage()
            ], 500);
        }
    }

    public function startInstallation(Request $request)
    {
        // 设置超时时间
        set_time_limit(600);

        $validated = $request->validate([
            'file' => 'required|string',
            'host' => 'required|string',
            'port' => 'required|integer',
            'database' => 'required|string',
            'username' => 'required|string',
            'password' => 'required|string',
            'force' => 'boolean',
            'backup' => 'boolean'
        ]);

        $basePath = base_path();
        $logs = ["[开始] SQL安装过程启动"];
        $logs[] = "[项目目录] {$basePath}";

        try {
            // 更新环境变量
            $config = [
                'DB_HOST' => $validated['host'],
                'DB_PORT' => $validated['port'],
                'DB_DATABASE' => $validated['database'],
                'DB_USERNAME' => $validated['username'],
                'DB_PASSWORD' => $validated['password'],
            ];


            // 更新 .env 文件
            $this->updateEnvFile($config);
            $logs[] = "✅ 环境变量已更新";

            // 更新运行时配置
            foreach ($config as $key => $value) {
                $configKey = strtolower(substr($key, 3));
                Config::set("database.connections.mysql.{$configKey}", $value);
            }
//            ds($logs);

            $logs[] = "🔧 使用主机: {$validated['host']}";
            $logs[] = "🔧 使用端口: {$validated['port']}";
            $logs[] = "🔧 使用数据库: {$validated['database']}";
            $logs[] = "🔧 SQL文件: {$validated['file']}";

            // 检查数据库是否存在，如果不存在则创建
            $logs[] = "🔍 检查数据库是否存在";


//            $connection = DB::connection('mysql');
//            $databaseName = $validated['database'];
//            $result = $connection->select("
//                SELECT SCHEMA_NAME
//                FROM INFORMATION_SCHEMA.SCHEMATA
//                WHERE SCHEMA_NAME = ?
//            ", [$databaseName]);
//
//            if (empty($result)) {
//                $logs[] = "🔧 数据库不存在，正在创建...";
//                $connection->statement("CREATE DATABASE IF NOT EXISTS `$databaseName`");
//                $logs[] = "✅ 数据库已创建";
//            }

            // 构建 Artisan 命令 - 使用相对路径解决权限问题
            $command = [
                'php',
                'artisan',
                'sql:run-nl-admin',
                '--file=' . $validated['file'],
                '--database=' . $validated['database'],
            ];

//            ds($command);

            if ($validated['force'] ?? false) {
                $command[] = '--force';
                $logs[] = "⚠️ 强制模式已启用 (将覆盖现有数据)";
            }

            if ($validated['backup'] ?? false) {
                $command[] = '--backup';
                $logs[] = "📦 数据库备份已启用";
            }

            $logs[] = "🔄 正在执行: " . implode(' ', $command);

            // 改变工作目录解决路径问题
//            $process = new Process($command, $basePath);
            $process = new Process($command, $basePath);
            $process->setTimeout(300);
            $process->start();

            // 实时捕获输出
            $process->wait(function ($type, $buffer) use (&$logs) {
                if (!empty(trim($buffer))) {
                    $bufferLines = array_map('trim', explode("\n", trim($buffer)));
                    foreach ($bufferLines as $line) {
                        if (!empty($line)) {
                            $logs[] = $line;
                        }
                    }
                }
            });

            // 检查执行结果
            if (!$process->isSuccessful()) {
                throw new ProcessFailedException($process);
            }

            // 添加详细成功日志
            $logs[] = "✅ SQL文件执行成功";
            $logs[] = "📊 执行命令: " . $process->getCommandLine();
            $logs[] = "🆗 退出状态: " . $process->getExitCode();

            // 获取SQL文件大小
            $filePath = base_path($validated['file']);
            $fileSize = file_exists($filePath) ? filesize($filePath) : 0;

            return response()->json([
                'success' => true,
                'logs' => $logs,
                'file_size' => $fileSize
            ]);

        } catch (\Exception $e) {
            $logs[] = "❌ 安装过程中出错: " . $e->getMessage();

            // 添加详细的错误分析
            if ($e instanceof ProcessFailedException) {
                $logs[] = "🛠 退出代码: " . $e->getProcess()->getExitCode();
                $logs[] = "📜 错误输出: " . $e->getProcess()->getErrorOutput();

                // 分析常见权限问题
                $errorOutput = $e->getProcess()->getErrorOutput();
                if (strpos($errorOutput, 'Permission denied') !== false) {
                    $logs[] = "🔑 权限问题检测:";
                    $logs[] = "   1. 确保Web服务器对扩展目录有读取权限";
                    $logs[] = "   2. 尝试运行: sudo chmod -R a+r /usr/local/lib/php/extensions/";
                    $logs[] = "   3. 检查SELinux/AppArmor设置";
                }
            }

            return response()->json([
                'success' => false,
                'message' => $e->getMessage(),
                'logs' => $logs
            ], 500);
        }
    }

    /**
     * 更新 .env 文件
     */
    protected function updateEnvFile(array $config): void
    {
        $envPath = base_path('.env');
        $envContents = file_exists($envPath) ? File::get($envPath) : '';

        foreach ($config as $key => $value) {
            $escapedValue = str_replace('"', '\\"', $value);
            $line = "{$key}=\"{$escapedValue}\"";

            if (preg_match("/^{$key}=.*/m", $envContents)) {
                $envContents = preg_replace("/^{$key}=.*/m", $line, $envContents);
            } else {
                $envContents .= PHP_EOL . $line;
            }
        }

        File::put($envPath, $envContents);
    }
}