<?php

namespace Appwrite\Platform\Tasks;

use Appwrite\Docker\Compose;
use Appwrite\Docker\Env;
use Appwrite\Platform\Installer\Runtime\State;
use Appwrite\Platform\Installer\Server as InstallerServer;
use Appwrite\Utopia\View;
use Swoole\Coroutine;
use Utopia\Auth\Proofs\Password;
use Utopia\Auth\Proofs\Token;
use Utopia\Config\Config;
use Utopia\Console;
use Utopia\Fetch\Client;
use Utopia\Platform\Action;
use Utopia\Validator\Boolean;
use Utopia\Validator\Text;
use Utopia\Validator\WhiteList;

class Install extends Action
{
    private const int INSTALL_STEP_DELAY_SECONDS = 2;
    private const int WEB_SERVER_CHECK_ATTEMPTS = 10;
    private const int WEB_SERVER_CHECK_DELAY_SECONDS = 1;

    private const int HEALTH_CHECK_ATTEMPTS = 30;
    private const int HEALTH_CHECK_DELAY_SECONDS = 1;
    private const int PROC_CLOSE_TIMEOUT_SECONDS = 60;

    private const string PATTERN_ENV_VAR_NAME = '/^[A-Z0-9_]+$/';
    private const string PATTERN_DB_PASSWORD_VAR = '/^_APP_DB_.*_PASS$/';
    private const string PATTERN_SESSION_COOKIE = '/a_session_console=([^;]+)/';

    private const string APPWRITE_API_URL = 'http://appwrite';
    private const string GROWTH_API_URL = 'https://growth.appwrite.io/v1';

    protected bool $isUpgrade = false;
    protected bool $migrate = false;
    protected string $hostPath = '';
    protected ?bool $isLocalInstall = null;
    protected ?array $installerConfig = null;
    protected string $path = '/usr/src/code/appwrite';

    public static function getName(): string
    {
        return 'install';
    }

    public function __construct()
    {
        $this
            ->desc('Install Appwrite')
            ->param('http-port', '', new Text(4), 'Server HTTP port', true)
            ->param('https-port', '', new Text(4), 'Server HTTPS port', true)
            ->param('organization', 'appwrite', new Text(0), 'Docker Registry organization', true)
            ->param('image', 'appwrite', new Text(0), 'Main appwrite docker image', true)
            ->param('interactive', 'Y', new Text(1), 'Run an interactive session', true)
            ->param('no-start', false, new Boolean(true), 'Run an interactive session', true)
            ->param('database', 'mongodb', new WhiteList(['mongodb', 'mariadb', 'postgresql']), 'Database to use (mongodb|mariadb|postgresql)', true)
            ->callback($this->action(...));
    }

    public function action(
        string $httpPort,
        string $httpsPort,
        string $organization,
        string $image,
        string $interactive,
        bool $noStart,
        string $database
    ): void {
        $isUpgrade = $this->isUpgrade;
        $defaultHttpPort = '80';
        $defaultHttpsPort = '443';
        $config = Config::getParam('variables');

        /** @var array<string, array<string, string>> $vars array where key is variable name and value is variable */
        $vars = [];

        foreach ($config as $category) {
            foreach ($category['variables'] ?? [] as $var) {
                $vars[$var['name']] = $var;
            }
        }

        Console::success('Starting Appwrite installation...');

        $isLocalInstall = $this->isLocalInstall();
        $this->applyLocalPaths($isLocalInstall, true);

        // Create directory with write permissions
        if (!\file_exists(\dirname($this->path))) {
            if (!@\mkdir(\dirname($this->path), 0755, true)) {
                Console::error('Can\'t create directory ' . \dirname($this->path));
                Console::exit(1);
            }
        }

        // Check for existing installation
        $data = $this->readExistingCompose();
        $envFileExists = file_exists($this->path . '/' . $this->getEnvFileName());
        $existingInstallation = $data !== '' || $envFileExists;

        if ($existingInstallation) {
            $time = \time();
            $composeFileName = $this->getComposeFileName();
            Console::info('Compose file found, creating backup: ' . $composeFileName . '.' . $time . '.backup');
            file_put_contents($this->path . '/' . $composeFileName . '.' . $time . '.backup', $data);
            $compose = new Compose($data);
            $appwrite = $compose->getService('appwrite');
            $oldVersion = $appwrite?->getImageVersion();
            try {
                $ports = $compose->getService('traefik')->getPorts();
            } catch (\Throwable $th) {
                $ports = [
                    $defaultHttpPort => $defaultHttpPort,
                    $defaultHttpsPort => $defaultHttpsPort
                ];
                Console::warning('Traefik not found. Falling back to default ports.');
            }

            if ($oldVersion) {
                foreach ($compose->getServices() as $service) {
                    if (!$service) {
                        continue;
                    }

                    $env = $service->getEnvironment()->list();

                    foreach ($env as $key => $value) {
                        if (is_null($value)) {
                            continue;
                        }

                        $configVar = $vars[$key] ?? [];
                        if (!empty($configVar) && !($configVar['overwrite'] ?? false)) {
                            $vars[$key]['default'] = $value;
                        }
                    }
                }

                $envData = @file_get_contents($this->path . '/' . $this->getEnvFileName());

                if ($envData !== false) {
                    if (!$isLocalInstall) {
                        Console::info('Env file found, creating backup: .env.' . $time . '.backup');
                        file_put_contents($this->path . '/.env.' . $time . '.backup', $envData);
                    }
                    $env = new Env($envData);

                    foreach ($env->list() as $key => $value) {
                        if (is_null($value)) {
                            continue;
                        }

                        $configVar = $vars[$key] ?? [];
                        if (!empty($configVar) && !($configVar['overwrite'] ?? false)) {
                            $vars[$key]['default'] = $value;
                        }
                    }
                }

                foreach ($ports as $key => $value) {
                    if ($value === $defaultHttpPort) {
                        $defaultHttpPort = $key;
                    }

                    if ($value === $defaultHttpsPort) {
                        $defaultHttpsPort = $key;
                    }
                }
            }

            // Detect database type from existing installation.
            // 1.9.0+ installs have _APP_DB_ADAPTER; pre-1.9.0 installs
            // can be detected by the DB service name or _APP_DB_HOST.
            $existingDatabase = null;
            foreach ($compose->getServices() as $service) {
                if (!$service) {
                    continue;
                }
                $svcEnv = $service->getEnvironment()->list();
                if (isset($svcEnv['_APP_DB_ADAPTER'])) {
                    $existingDatabase = $svcEnv['_APP_DB_ADAPTER'];
                    break;
                }
            }
            if ($existingDatabase === null) {
                $envFilePath = $this->path . '/' . $this->getEnvFileName();
                $rawEnv = @file_get_contents($envFilePath);
                if ($rawEnv !== false) {
                    $existingDatabase = (new Env($rawEnv))->list()['_APP_DB_ADAPTER'] ?? null;
                }
            }
            if ($existingDatabase === null) {
                $existingDatabase = $this->detectDatabaseFromCompose($compose);
            }
            if ($existingDatabase !== null) {
                if ($existingDatabase !== $database) {
                    $database = $existingDatabase;
                    Console::info("Detected existing database: {$database}");
                }
                $vars['_APP_DB_ADAPTER']['default'] = $database;
            }
        }

        $installerConfig = $this->readInstallerConfig();
        $enabledDatabases = $installerConfig['enabledDatabases'] ?? ['mongodb', 'mariadb'];
        if (!in_array($database, $enabledDatabases, true)) {
            Console::error("Database '{$database}' is not available. Available options: " . implode(', ', $enabledDatabases));
            Console::exit(1);
        }

        // If interactive and web mode enabled, start web server
        // Skip the web installer when explicit CLI params are provided
        if ($interactive === 'Y' && Console::isInteractive() && !$this->hasExplicitCliParams()) {
            Console::success('Starting web installer...');
            Console::info('Open your browser at: http://localhost:' . InstallerServer::INSTALLER_WEB_PORT);
            Console::info('Press Ctrl+C to cancel installation');

            $detectedDb = ($existingInstallation && isset($existingDatabase)) ? $existingDatabase : null;
            $this->startWebServer($defaultHttpPort, $defaultHttpsPort, $organization, $image, $noStart, $vars, $isUpgrade || $existingInstallation, $detectedDb);
            return;
        }

        // Fall back to CLI mode
        $enableAssistant = false;
        $assistantExistsInOldCompose = false;
        if ($existingInstallation) {
            try {
                $assistantService = $compose->getService('appwrite-assistant');
                $assistantExistsInOldCompose = $assistantService !== null;
            } catch (\Throwable) {
                /* ignore */
            }
        }

        if ($interactive === 'Y' && Console::isInteractive()) {
            $prompt = 'Add Appwrite Assistant? (Y/n)' . ($assistantExistsInOldCompose ? ' [Currently enabled]' : '');
            $answer = Console::confirm($prompt);

            if (empty($answer)) {
                $enableAssistant = $assistantExistsInOldCompose;
            } else {
                $enableAssistant = \strtolower($answer) === 'y';
            }
        } elseif ($assistantExistsInOldCompose) {
            $enableAssistant = true;
        }

        if (empty($httpPort)) {
            $httpPort = Console::confirm('Choose your server HTTP port: (default: ' . $defaultHttpPort . ')');
            $httpPort = ($httpPort) ?: $defaultHttpPort;
        }

        if (empty($httpsPort)) {
            $httpsPort = Console::confirm('Choose your server HTTPS port: (default: ' . $defaultHttpsPort . ')');
            $httpsPort = ($httpsPort) ?: $defaultHttpsPort;
        }

        $userInput = [];
        foreach ($vars as $var) {
            if ($var['name'] === '_APP_ASSISTANT_OPENAI_API_KEY') {
                if (!$enableAssistant) {
                    $userInput[$var['name']] = '';
                    continue;
                }

                if (!empty($var['default'])) {
                    $userInput[$var['name']] = $var['default'];
                    continue;
                }

                if (Console::isInteractive() && $interactive === 'Y') {
                    $userInput[$var['name']] = Console::confirm('Enter your OpenAI API key for Appwrite Assistant:');
                    if (empty($userInput[$var['name']])) {
                        Console::warning('No API key provided. Assistant will be disabled.');
                        $enableAssistant = false;
                        $userInput[$var['name']] = '';
                    }
                } else {
                    $userInput[$var['name']] = '';
                }

                continue;
            }

            if (!$var['required'] || !Console::isInteractive() || $interactive !== 'Y') {
                continue;
            }

            if ($var['name'] === '_APP_DB_ADAPTER' && $data !== false) {
                $userInput[$var['name']] = $database;
                continue;
            }

            $value = Console::confirm($var['question'] . ' (default: \'' . $var['default'] . '\')');

            if (!empty($value)) {
                $userInput[$var['name']] = $value;
            }

            if ($var['filter'] === 'domainTarget' && !empty($value) && $value !== 'localhost') {
                Console::warning("\nIf you haven't already done so, set the following record for {$value} on your DNS provider:\n");
                $mask = "%-15.15s %-10.10s %-30.30s\n";
                printf($mask, "Type", "Name", "Value");
                printf($mask, "A or AAAA", "@", "<YOUR PUBLIC IP>");
                Console::warning("\nUse 'AAAA' if you're using an IPv6 address and 'A' if you're using an IPv4 address.\n");
            }
        }
        $userInput['_APP_DB_ADAPTER'] = $userInput['_APP_DB_ADAPTER'] ?? $database;
        $database = $userInput['_APP_DB_ADAPTER'];
        if ($database === 'postgresql') {
            $userInput['_APP_DB_HOST'] = 'postgresql';
            $userInput['_APP_DB_PORT'] = 5432;
        } elseif ($database === 'mongodb') {
            $userInput['_APP_DB_HOST'] = 'mongodb';
            $userInput['_APP_DB_PORT'] = 27017;
        } elseif ($database === 'mariadb') {
            $userInput['_APP_DB_HOST'] = 'mariadb';
            $userInput['_APP_DB_PORT'] = 3306;
        }

        $shouldGenerateSecrets = !$existingInstallation && !$isUpgrade;
        $input = $this->prepareEnvironmentVariables($userInput, $vars, $shouldGenerateSecrets);
        $this->performInstallation($httpPort, $httpsPort, $organization, $image, $input, $noStart, null, null, $isUpgrade, migrate: $this->migrate);
    }


    protected function startWebServer(string $defaultHttpPort, string $defaultHttpsPort, string $organization, string $image, bool $noStart, array $vars, bool $isUpgrade = false, ?string $lockedDatabase = null): void
    {
        $port = InstallerServer::INSTALLER_WEB_PORT;

        @unlink(InstallerServer::INSTALLER_COMPLETE_FILE);

        $state = new State([]);
        $state->clearStaleLock();

        $installerConfig = $this->readInstallerConfig();
        $enabledDatabases = $installerConfig['enabledDatabases'] ?? ['mongodb', 'mariadb'];

        $this->setInstallerConfig([
            'defaultHttpPort' => $defaultHttpPort,
            'defaultHttpsPort' => $defaultHttpsPort,
            'organization' => $organization,
            'image' => $image,
            'noStart' => $noStart,
            'vars' => $vars,
            'isUpgrade' => $isUpgrade,
            'lockedDatabase' => $lockedDatabase,
            'enabledDatabases' => $enabledDatabases,
            'isLocal' => $this->isLocalInstall(),
            'hostPath' => $this->hostPath ?: null,
        ]);

        // Start Swoole-based installer server in background
        // Redirect stdout/stderr to a log file so exec() returns immediately
        // (otherwise the backgrounded process holds the pipe open and exec() hangs)
        $serverScript = \escapeshellarg(dirname(__DIR__) . '/Installer/Server.php');
        $logFile = \sys_get_temp_dir() . '/appwrite-installer-server.log';
        $output = [];
        \exec("php {$serverScript} > " . \escapeshellarg($logFile) . " 2>&1 & echo \$!", $output);
        $pid = isset($output[0]) ? (int) $output[0] : 0;

        \register_shutdown_function(function () use ($pid) {
            if ($pid > 0 && \function_exists('posix_kill')) {
                @\posix_kill($pid, SIGTERM);
            }
        });
        \sleep(1);

        if (!$this->waitForWebServer($port)) {
            $log = @\file_get_contents($logFile);
            if ($log !== false && $log !== '') {
                Console::error('Installer server log:');
                Console::error($log);
            }
            Console::warning('Web installer did not respond in time. Please refresh the browser.');
            return;
        }

        if ($this->isInstallationComplete($port)) {
            Console::success('Installation completed.');
        }
    }

    public function prepareEnvironmentVariables(array $userInput, array $vars, bool $shouldGenerateSecrets = true): array
    {
        $input = [];
        $password = new Password();
        $token = new Token();

        // Start with all defaults
        foreach ($vars as $var) {
            $filter = $var['filter'] ?? null;
            $default = $var['default'] ?? null;
            $hasDefault = $default !== null && $default !== '';

            if ($filter === 'token') {
                if ($hasDefault) {
                    $input[$var['name']] = $default;
                } elseif ($shouldGenerateSecrets) {
                    $input[$var['name']] = $token->generate();
                } else {
                    $input[$var['name']] = '';
                }
            } elseif ($filter === 'password') {
                if ($hasDefault) {
                    $input[$var['name']] = $default;
                } elseif ($shouldGenerateSecrets) {
                    /*;#+@:/?& broke DSNs locally */
                    $input[$var['name']] = $this->generatePasswordValue($var['name'], $password);
                } else {
                    $input[$var['name']] = '';
                }
            } else {
                $input[$var['name']] = $default;
            }
        }

        // Override with user inputs
        foreach ($userInput as $key => $value) {
            if ($value !== null && ($value !== '' || $key === '_APP_ASSISTANT_OPENAI_API_KEY')) {
                $input[$key] = $value;
            }
        }

        foreach ($input as $key => $value) {
            if (!is_string($value)) {
                continue;
            }
            if (str_contains($value, "\n") || str_contains($value, "\r")) {
                throw new \InvalidArgumentException('Invalid value for ' . $key);
            }
        }

        // Set database-specific connection details
        $database = $input['_APP_DB_ADAPTER'] ?? 'mongodb';
        if ($database === 'mongodb') {
            $input['_APP_DB_HOST'] = 'mongodb';
            $input['_APP_DB_PORT'] = 27017;
        } elseif ($database === 'mariadb') {
            $input['_APP_DB_HOST'] = 'mariadb';
            $input['_APP_DB_PORT'] = 3306;
        } elseif ($database === 'postgresql') {
            $input['_APP_DB_HOST'] = 'postgresql';
            $input['_APP_DB_PORT'] = 5432;
        }

        return $input;
    }

    public function hasExistingConfig(): bool
    {
        $isLocalInstall = $this->isLocalInstall();
        $this->applyLocalPaths($isLocalInstall, true);

        if ($this->readExistingCompose() !== '') {
            return true;
        }

        return file_exists($this->path . '/' . $this->getEnvFileName());
    }

    private function updateProgress(?callable $progress, string $step, string $status, array $messages = [], array $details = [], ?string $messageOverride = null): void
    {
        if (!$progress) {
            return;
        }

        if ($messageOverride !== null) {
            $message = $messageOverride;
        } else {
            $key = $status === InstallerServer::STATUS_COMPLETED ? 'done' : 'start';
            $message = $messages[$step][$key] ?? null;
            if ($message === null) {
                return;
            }
        }

        try {
            $progress($step, $status, $message, $details);
        } catch (\Throwable $e) {
        }
        if ($status === InstallerServer::STATUS_IN_PROGRESS) {
            sleep(self::INSTALL_STEP_DELAY_SECONDS);
        }
    }

    private function setInstallerConfig(array $config): void
    {
        $json = json_encode($config, JSON_UNESCAPED_SLASHES);
        if (!is_string($json)) {
            return;
        }

        putenv('APPWRITE_INSTALLER_CONFIG=' . $json);
        $path = InstallerServer::INSTALLER_CONFIG_FILE;
        if (@file_put_contents($path, $json) === false) {
            return;
        }
        @chmod($path, 0600);
    }

    public function performInstallation(
        string $httpPort,
        string $httpsPort,
        string $organization,
        string $image,
        array $input,
        bool $noStart,
        ?callable $progress = null,
        ?string $resumeFromStep = null,
        bool $isUpgrade = false,
        array $account = [],
        ?callable $onComplete = null,
        bool $migrate = false,
    ): void {
        $isLocalInstall = $this->isLocalInstall();
        $this->applyLocalPaths($isLocalInstall, false);

        $isCLI = php_sapi_name() === 'cli';
        if ($isLocalInstall || $isUpgrade) {
            $useExistingConfig = false;
        } else {
            $useExistingConfig = file_exists($this->path . '/' . $this->getComposeFileName())
                    && file_exists($this->path . '/' . $this->getEnvFileName());
        }

        if ($isLocalInstall) {
            $image = 'appwrite';
            $organization = 'appwrite';
        }

        $templateForEnv = new View($this->buildFromProjectPath('/app/views/install/env.phtml'));
        $templateForCompose = new View($this->buildFromProjectPath('/app/views/install/compose.phtml'));

        $database = $input['_APP_DB_ADAPTER'] ?? 'mongodb';

        $version = \getenv('_APP_VERSION') ?: (\defined('APP_VERSION_STABLE') ? APP_VERSION_STABLE : 'latest');
        if ($isLocalInstall) {
            $version = 'local';
        }

        $assistantKey = (string) ($input['_APP_ASSISTANT_OPENAI_API_KEY'] ?? '');
        $enableAssistant = trim($assistantKey) !== '';

        $templateForCompose
            ->setParam('httpPort', $httpPort)
            ->setParam('httpsPort', $httpsPort)
            ->setParam('version', $version)
            ->setParam('organization', $organization)
            ->setParam('image', $image)
            ->setParam('database', $database)
            ->setParam('hostPath', $this->hostPath)
            ->setParam('enableAssistant', $enableAssistant);

        $templateForEnv->setParam('vars', $input);

        $steps = [
            InstallerServer::STEP_DOCKER_COMPOSE,
            InstallerServer::STEP_ENV_VARS,
            InstallerServer::STEP_DOCKER_CONTAINERS
        ];

        $startIndex = 0;
        if ($resumeFromStep !== null) {
            $resumeIndex = array_search($resumeFromStep, $steps, true);
            if ($resumeIndex !== false) {
                $startIndex = $resumeIndex;
            }
        }

        $currentStep = null;

        $messages = $this->buildStepMessages($isUpgrade);

        try {
            if ($startIndex <= 1) {
                $this->updateProgress($progress, InstallerServer::STEP_CONFIG_FILES, InstallerServer::STATUS_IN_PROGRESS, $messages);
            }

            if ($startIndex <= 0) {
                $currentStep = InstallerServer::STEP_DOCKER_COMPOSE;
                $this->updateProgress($progress, InstallerServer::STEP_DOCKER_COMPOSE, InstallerServer::STATUS_IN_PROGRESS, $messages);

                if (!$useExistingConfig) {
                    $this->writeComposeFile($templateForCompose);
                }

                $this->updateProgress($progress, InstallerServer::STEP_DOCKER_COMPOSE, InstallerServer::STATUS_COMPLETED, $messages);
            }

            if ($startIndex <= 1) {
                $currentStep = InstallerServer::STEP_ENV_VARS;
                $this->updateProgress($progress, InstallerServer::STEP_ENV_VARS, InstallerServer::STATUS_IN_PROGRESS, $messages);

                if (!$useExistingConfig) {
                    $this->writeEnvFile($templateForEnv);
                }

                $this->updateProgress($progress, InstallerServer::STEP_ENV_VARS, InstallerServer::STATUS_COMPLETED, $messages);
                $this->updateProgress($progress, InstallerServer::STEP_CONFIG_FILES, InstallerServer::STATUS_COMPLETED, $messages);
            }

            if ($database === 'mongodb' && !$useExistingConfig) {
                $this->copyMongoEntrypointIfNeeded();
            }

            if (!$noStart && $startIndex <= 2) {
                $currentStep = InstallerServer::STEP_DOCKER_CONTAINERS;
                $this->updateProgress($progress, InstallerServer::STEP_DOCKER_CONTAINERS, InstallerServer::STATUS_IN_PROGRESS, $messages);
                $this->runDockerCompose($input, $isLocalInstall, $useExistingConfig, $isCLI, $progress, $isUpgrade);

                if (!$isUpgrade) {
                    $this->updateProgress($progress, InstallerServer::STEP_DOCKER_CONTAINERS, InstallerServer::STATUS_COMPLETED, $messages);
                    $this->updateProgress($progress, InstallerServer::STEP_ACCOUNT_SETUP, InstallerServer::STATUS_IN_PROGRESS, messageOverride: 'Creating Appwrite account...');
                }

                if (!$isLocalInstall) {
                    $this->connectInstallerToAppwriteNetwork();
                }

                $domain = $input['_APP_DOMAIN'] ?? 'localhost';

                $healthStep = $isUpgrade ? InstallerServer::STEP_DOCKER_CONTAINERS : InstallerServer::STEP_ACCOUNT_SETUP;
                if (!$isUpgrade) {
                    $currentStep = InstallerServer::STEP_ACCOUNT_SETUP;
                }
                $apiUrl = $this->waitForApiReady($domain, $httpPort, $isLocalInstall, $progress, $healthStep);

                if ($isUpgrade) {
                    $this->updateProgress($progress, InstallerServer::STEP_DOCKER_CONTAINERS, InstallerServer::STATUS_COMPLETED, $messages);
                }

                if (!$isUpgrade) {
                    $this->createInitialAdminAccount($account, $progress, $apiUrl, $domain);
                }

                if ($isUpgrade && $migrate) {
                    // Allow the containers-completed SSE event to flush
                    // before blocking on migration exec
                    usleep(200_000);
                    $currentStep = InstallerServer::STEP_MIGRATION;
                    $this->runDatabaseMigration($progress, $isLocalInstall);
                } elseif ($isUpgrade) {
                    $this->updateProgress($progress, InstallerServer::STEP_MIGRATION, InstallerServer::STATUS_COMPLETED, messageOverride: 'Migration skipped');
                }

                // Signal completion before tracking so the SSE stream
                // finishes and the frontend can redirect immediately.
                if ($onComplete) {
                    try {
                        $onComplete();
                    } catch (\Throwable) {
                    }
                }

                // Run tracking in a coroutine when inside a Swoole
                // request so it doesn't block the worker.
                if (Coroutine::getCid() !== -1) {
                    go(function () use ($input, $isUpgrade, $version, $account) {
                        $this->trackSelfHostedInstall($input, $isUpgrade, $version, $account);
                    });
                } else {
                    $this->trackSelfHostedInstall($input, $isUpgrade, $version, $account);
                }

                if ($isCLI) {
                    Console::success('Appwrite installed successfully');
                }
            } else {
                if ($isCLI) {
                    Console::success('Installation files created. Run "docker compose up -d" to start Appwrite');
                }
            }
        } catch (\Throwable $e) {
            if ($currentStep) {
                $details = [];
                $previous = $e->getPrevious();
                if ($previous instanceof \Throwable && $previous->getMessage() !== '') {
                    $details['output'] = $previous->getMessage();
                }
                $this->updateProgress($progress, $currentStep, InstallerServer::STATUS_ERROR, $messages, $details, $e->getMessage());
            }
            throw $e;
        }
    }

    private function createInitialAdminAccount(array $account, ?callable $progress, string $apiUrl, string $domain): void
    {
        $name = $account['name'] ?? 'Admin';
        $email = $account['email'] ?? null;
        $password = $account['password'] ?? null;

        if (!$email || !$password) {
            return;
        }

        try {
            $this->updateProgress(
                $progress,
                InstallerServer::STEP_ACCOUNT_SETUP,
                InstallerServer::STATUS_IN_PROGRESS,
                messageOverride: 'Creating Appwrite account'
            );

            // Create the account — tolerate "already exists" and "console
            // is restricted" errors so we can still create a session
            // (common when re-running the installer or upgrading).
            $userId = null;
            try {
                $userId = $this->makeApiCall('/v1/account', [
                    'userId' => 'unique()',
                    'email' => $email,
                    'password' => $password,
                    'name' => $name
                ], false, $apiUrl, $domain);
            } catch (\Throwable $e) {
                $message = $e->getMessage();
                $accountExists = \stripos($message, 'already exists') !== false
                    || \stripos($message, 'console is restricted') !== false;
                if (!$accountExists) {
                    throw $e;
                }
            }

            $session = $this->makeApiCall('/v1/account/sessions/email', [
                'email' => $email,
                'password' => $password
            ], true, $apiUrl, $domain);

            $this->updateProgress(
                $progress,
                InstallerServer::STEP_ACCOUNT_SETUP,
                InstallerServer::STATUS_COMPLETED,
                details: [
                    'userId' => $userId ?? $session['id'],
                    'sessionId' => $session['id'],
                    'sessionSecret' => $session['secret'],
                    'sessionExpire' => $session['expire'] ?? null
                ],
                messageOverride: 'Account created successfully'
            );
        } catch (\Throwable $e) {
            $this->updateProgress(
                $progress,
                InstallerServer::STEP_ACCOUNT_SETUP,
                InstallerServer::STATUS_ERROR,
                details: [
                    'output' => "apiUrl={$apiUrl}, domain={$domain}",
                    'trace' => $e->getTraceAsString(),
                ],
                messageOverride: 'Account creation failed: ' . $e->getMessage()
            );
        }
    }

    private function runDatabaseMigration(?callable $progress, bool $isLocalInstall): void
    {
        $this->updateProgress(
            $progress,
            InstallerServer::STEP_MIGRATION,
            InstallerServer::STATUS_IN_PROGRESS,
            messageOverride: 'Running database migration...'
        );

        // Allow the SSE chunk to flush before the blocking exec
        usleep(100_000);

        // Static command — no user input involved
        $command = $isLocalInstall
            ? 'docker compose exec appwrite migrate 2>&1'
            : 'docker exec appwrite migrate 2>&1';

        $output = [];
        \exec($command, $output, $exit);

        if ($exit !== 0) {
            $message = trim(implode("\n", $output));
            $this->updateProgress(
                $progress,
                InstallerServer::STEP_MIGRATION,
                InstallerServer::STATUS_ERROR,
                details: ['output' => $message],
                messageOverride: 'Migration failed: ' . ($message ?: 'exit code ' . $exit)
            );
            throw new \RuntimeException('Database migration failed', 0, $message !== '' ? new \RuntimeException($message) : null);
        }

        $this->updateProgress(
            $progress,
            InstallerServer::STEP_MIGRATION,
            InstallerServer::STATUS_COMPLETED,
            messageOverride: 'Database migration completed'
        );
    }

    private function trackSelfHostedInstall(array $input, bool $isUpgrade, string $version, array $account): void
    {
        if ($this->isLocalInstall()) {
            return;
        }

        $appEnv = $input['_APP_ENV'] ?? 'development';
        $domain = $input['_APP_DOMAIN'] ?? 'localhost';

        /* local or test instance */
        if ($appEnv !== 'production') {
            return;
        }

        /* prod but local or test instance */
        if ($domain === 'localhost'
            || str_starts_with($domain, '127.')
            || str_starts_with($domain, '0.0.0.0')
        ) {
            return;
        }

        $type = $isUpgrade ? 'upgrade' : 'install';
        $database = $input['_APP_DB_ADAPTER'] ?? 'mongodb';
        $name = $account['name'] ?? 'Admin';
        $email = $account['email'] ?? 'admin@selfhosted.local';

        $hostIp = @gethostbyname($domain);

        $payload = [
            'action' => $type,
            'account' => 'self-hosted',
            'url' => 'https://' . $domain,
            'category' => 'self_hosted',
            'label' => 'self_hosted_' . $type,
            'version' => $version,
            'data' => json_encode([
                'name' => $name,
                'email' => $email,
                'domain' => $domain,
                'database' => $database,
                'ip' => ($hostIp !== false && $hostIp !== $domain) ? $hostIp : null,
                'os' => php_uname('s') . ' ' . php_uname('r'),
                'arch' => php_uname('m'),
                'cpus' => ((int) trim((string) \shell_exec('nproc'))) ?: null,
                'ram' => (int) round(((float) trim((string) \shell_exec('grep MemTotal /proc/meminfo | awk \'{print $2}\''))) / 1024),
            ]),
        ];

        try {
            $client = new Client();
            $client
                ->setConnectTimeout(5000)
                ->setTimeout(5000)
                ->addHeader('Content-Type', 'application/json')
                ->fetch(self::GROWTH_API_URL . '/analytics', Client::METHOD_POST, $payload);
        } catch (\Throwable) {
            // tracking shouldn't block installation
        }
    }

    /**
     * Wait for the Appwrite API to respond. Builds candidate URLs based on
     * the runtime context and returns whichever responds first.
     *
     * Candidates (in order of preference):
     *  - Docker internal DNS (http://appwrite) — only if on the appwrite network
     *  - host.docker.internal:{port} — reaches host-published ports from inside a container
     *  - localhost:{port} — works when running directly on the host (local dev)
     */
    private function waitForApiReady(string $domain, string $httpPort, bool $isLocalInstall, ?callable $progress, string $step = InstallerServer::STEP_ACCOUNT_SETUP): string
    {
        $client = new Client();
        $client
            ->setTimeout(2000)
            ->setConnectTimeout(2000)
            ->addHeader('Host', $domain);

        $healthPath = '/v1/health/version';

        if ($isLocalInstall) {
            $candidates = [
                'http://localhost:' . $httpPort . $healthPath,
            ];
        } else {
            $candidates = [
                self::APPWRITE_API_URL . $healthPath,
                'http://host.docker.internal:' . $httpPort . $healthPath,
            ];
        }

        $lastErrors = [];

        for ($i = 0; $i < self::HEALTH_CHECK_ATTEMPTS; $i++) {
            foreach ($candidates as $url) {
                try {
                    $response = $client->fetch($url);
                    if ($response->getStatusCode() === 200) {
                        return \rtrim(\substr($url, 0, -\strlen($healthPath)), '/');
                    }
                    $lastErrors[$url] = "HTTP {$response->getStatusCode()}";
                } catch (\Throwable $e) {
                    $lastErrors[$url] = $e->getMessage();
                }
            }

            if ($progress) {
                try {
                    $progress(
                        $step,
                        InstallerServer::STATUS_IN_PROGRESS,
                        'Waiting for Appwrite to be ready...',
                        []
                    );
                } catch (\Throwable) {
                }
            }

            if ($i < self::HEALTH_CHECK_ATTEMPTS - 1) {
                sleep(self::HEALTH_CHECK_DELAY_SECONDS);
            }
        }

        $errorDetail = implode('; ', array_map(
            fn ($url, $err) => "{$url} => {$err}",
            array_keys($lastErrors),
            array_values($lastErrors)
        ));

        throw new \Exception("Failed to connect with Appwrite in time. Tried: {$errorDetail}");
    }

    /**
     * Connect the installer container to the appwrite network, retrying
     * until it succeeds or we run out of attempts.
     */
    private function connectInstallerToAppwriteNetwork(): void
    {
        $network = escapeshellarg('appwrite');

        // Resolve our own container ID — works regardless of how the
        // container was started (--name, random name, etc.).
        $containerId = trim((string) @file_get_contents('/etc/hostname'));
        if ($containerId === '') {
            $containerId = InstallerServer::DEFAULT_CONTAINER;
        }
        $container = escapeshellarg($containerId);

        $outputStr = '';
        for ($i = 0; $i < 10; $i++) {
            $output = [];
            @exec("docker network connect {$network} {$container} 2>&1", $output, $exitCode);

            if ($exitCode === 0) {
                return;
            }

            $outputStr = implode(' ', $output);
            if (str_contains($outputStr, 'already exists')) {
                return;
            }

            sleep(1);
        }

        throw new \Exception('Failed to connect installer to appwrite network: ' . $outputStr);
    }

    private function makeApiCall(string $endpoint, array $body, bool $extractSession = false, string $apiUrl = self::APPWRITE_API_URL, string $domain = 'localhost')
    {
        $client = new Client();
        $client
            ->setTimeout(30000)
            ->setConnectTimeout(10000)
            ->addHeader('Content-Type', 'application/json')
            ->addHeader('X-Appwrite-Project', 'console')
            ->addHeader('Host', $domain);

        $url = $apiUrl . $endpoint;
        $response = $client->fetch($url, Client::METHOD_POST, $body);

        if ($response->getStatusCode() !== 201) {
            $error = $response->json();
            $message = $error['message'] ?? ('HTTP ' . $response->getStatusCode() . ': ' . $response->getBody());
            throw new \Exception("API call failed ({$endpoint}): {$message}");
        }

        $data = $response->json();
        if (!isset($data['$id'])) {
            throw new \Exception('API response missing ID field');
        }

        if ($extractSession) {
            $headers = $response->getHeaders();
            $setCookie = $headers['set-cookie'] ?? $headers['Set-Cookie'] ?? null;

            if (!$setCookie || !preg_match(self::PATTERN_SESSION_COOKIE, $setCookie, $matches)) {
                throw new \Exception('Session created but no cookie found');
            }

            return [
                'id' => $data['$id'],
                'secret' => urldecode($matches[1]),
                'expire' => $data['expire'] ?? null
            ];
        }

        return $data['$id'];
    }

    private function buildStepMessages(bool $isUpgrade): array
    {
        $isUpgradeLabel = $isUpgrade ? 'updated' : 'created';
        $verbs = [
            InstallerServer::STEP_CONFIG_FILES => $isUpgrade ? 'Updating' : 'Creating',
            InstallerServer::STEP_DOCKER_COMPOSE => $isUpgrade ? 'Updating' : 'Generating',
            InstallerServer::STEP_ENV_VARS => $isUpgrade ? 'Updating' : 'Configuring',
            InstallerServer::STEP_DOCKER_CONTAINERS => $isUpgrade ? 'Restarting' : 'Starting',
        ];

        return [
            InstallerServer::STEP_CONFIG_FILES => [
                'start' => $verbs[InstallerServer::STEP_CONFIG_FILES] . ' configuration files...',
                'done' => 'Configuration files ' . $isUpgradeLabel,
            ],
            InstallerServer::STEP_DOCKER_COMPOSE => [
                'start' => $verbs[InstallerServer::STEP_DOCKER_COMPOSE] . ' Docker Compose file...',
                'done' => 'Docker Compose file ' . $isUpgradeLabel,
            ],
            InstallerServer::STEP_ENV_VARS => [
                'start' => $verbs[InstallerServer::STEP_ENV_VARS] . ' environment variables...',
                'done' => 'Environment variables ' . $isUpgradeLabel,
            ],
            InstallerServer::STEP_DOCKER_CONTAINERS => [
                'start' => $verbs[InstallerServer::STEP_DOCKER_CONTAINERS] . ' Docker containers...',
                'done' => $isUpgrade ? 'Docker containers restarted' : 'Docker containers started',
            ],
        ];
    }

    private function writeComposeFile(View $template): void
    {
        $composeFileName = $this->getComposeFileName();
        $targetPath = $this->path . '/' . $composeFileName;
        $renderedContent = $template->render(false);

        $result = @file_put_contents($targetPath, $renderedContent);
        if ($result === false) {
            $lastError = error_get_last();
            $errorMsg = $lastError ? $lastError['message'] : 'Unknown error';
            throw new \Exception('Failed to save Docker Compose file: ' . $errorMsg . ' (path: ' . $targetPath . ')');
        }
    }

    private function writeEnvFile(View $template): void
    {
        $envFileName = $this->getEnvFileName();
        if (!\file_put_contents($this->path . '/' . $envFileName, $template->render(false))) {
            throw new \Exception('Failed to save environment variables file');
        }
    }

    private function copyMongoEntrypointIfNeeded(): void
    {
        $mongoEntrypoint = $this->buildFromProjectPath('/mongo-entrypoint.sh');

        if (file_exists($mongoEntrypoint)) {
            // Always use container path for file operations
            copy($mongoEntrypoint, $this->path . '/mongo-entrypoint.sh');
        }
    }

    protected function runDockerCompose(array $input, bool $isLocalInstall, bool $useExistingConfig, bool $isCLI, ?callable $progress = null, bool $isUpgrade = false): void
    {
        $env = '';
        if (!$useExistingConfig) {
            foreach ($input as $key => $value) {
                if ($value === null || $value === '') {
                    continue;
                }
                if (!preg_match(self::PATTERN_ENV_VAR_NAME, $key)) {
                    throw new \Exception("Invalid environment variable name: $key");
                }
                $env .= $key . '=' . \escapeshellarg((string) $value) . ' ';
            }
        }

        if ($isCLI) {
            Console::log("Running \"docker compose up -d --remove-orphans --renew-anon-volumes\"");
        }

        $composeFileName = $this->getComposeFileName();
        $composeFile = $this->path . '/' . $composeFileName;

        $command = [
            'docker',
            'compose',
            '-f',
            $composeFile,
        ];

        if ($isLocalInstall) {
            $command[] = '--project-name';
            $command[] = 'appwrite';
        }

        $command[] = '--project-directory';
        $command[] = $this->path;
        $command[] = 'up';
        $command[] = '-d';
        $command[] = '--remove-orphans';
        $command[] = '--renew-anon-volumes';
        $commandLine = $env . implode(' ', array_map(escapeshellarg(...), $command));

        if ($progress) {
            $totalServices = $this->countComposeServices($composeFile);
            if ($totalServices > 0) {
                $verb = $isUpgrade ? 'Restarting' : 'Starting';
                try {
                    $progress(
                        InstallerServer::STEP_DOCKER_CONTAINERS,
                        InstallerServer::STATUS_IN_PROGRESS,
                        "$verb Docker containers...",
                        ['containerStarted' => 0, 'containerTotal' => $totalServices]
                    );
                } catch (\Throwable) {
                }
            }
            $result = $this->execWithContainerProgress($commandLine, $totalServices, $progress, $isUpgrade);
            $output = $result['output'];
            $exit = $result['exit'];
        } else {
            \exec($commandLine . ' 2>&1', $output, $exit);
        }

        if ($exit !== 0) {
            $message = trim(implode("\n", $output));
            $previous = $message !== '' ? new \RuntimeException($message) : null;
            throw new \RuntimeException('Failed to start containers', 0, $previous);
        }
        if ($isLocalInstall && $isCLI && !empty($output)) {
            Console::log(implode("\n", $output));
        }
    }

    private function countComposeServices(string $composeFile): int
    {
        $content = @file_get_contents($composeFile);
        if ($content === false) {
            return 0;
        }
        $count = preg_match_all('/^\s*container_name:/m', $content);
        return $count !== false ? $count : 0;
    }

    private function execWithContainerProgress(string $commandLine, int $totalServices, callable $progress, bool $isUpgrade): array
    {
        $verb = $isUpgrade ? 'Restarting' : 'Starting';
        $message = "$verb Docker containers...";
        $started = 0;
        $output = [];

        $process = proc_open(
            $commandLine . ' 2>&1',
            [1 => ['pipe', 'w']],
            $pipes
        );

        if (!is_resource($process)) {
            return ['output' => [], 'exit' => 1];
        }

        stream_set_blocking($pipes[1], false);
        $deadline = time() + self::PROC_CLOSE_TIMEOUT_SECONDS;
        $buffer = '';

        while (time() < $deadline) {
            $status = proc_get_status($process);

            $read = [$pipes[1]];
            $write = null;
            $except = null;
            $changed = @stream_select($read, $write, $except, 1);

            if ($changed > 0) {
                $chunk = fread($pipes[1], 8192);
                if ($chunk === false || $chunk === '') {
                    if (!$status['running']) {
                        break;
                    }
                    continue;
                }
                $buffer .= $chunk;
                while (($pos = strpos($buffer, "\n")) !== false) {
                    $trimmed = rtrim(substr($buffer, 0, $pos), "\r");
                    $buffer = substr($buffer, $pos + 1);
                    $output[] = $trimmed;

                    if (str_contains($trimmed, 'Container') && (str_contains($trimmed, 'Started') || str_contains($trimmed, 'Running'))) {
                        $started = min($started + 1, $totalServices);
                        if ($totalServices > 0) {
                            try {
                                $progress(
                                    InstallerServer::STEP_DOCKER_CONTAINERS,
                                    InstallerServer::STATUS_IN_PROGRESS,
                                    $message,
                                    ['containerStarted' => $started, 'containerTotal' => $totalServices]
                                );
                            } catch (\Throwable) {
                            }
                        }
                    }
                }
            }

            if (!$status['running'] && ($changed === 0 || feof($pipes[1]))) {
                break;
            }
        }

        if ($buffer !== '') {
            $output[] = rtrim($buffer, "\r\n");
        }

        fclose($pipes[1]);

        $exit = $this->procCloseWithTimeout($process, self::PROC_CLOSE_TIMEOUT_SECONDS);

        return ['output' => $output, 'exit' => $exit];
    }

    /**
     * Wait up to $timeoutSeconds for a process to exit, then kill it.
     *
     * proc_close() blocks indefinitely which can hang the installer if
     * docker compose refuses to exit after all containers are running.
     *
     * @param resource $process A process resource from proc_open()
     */
    private function procCloseWithTimeout($process, int $timeoutSeconds): int
    {
        $deadline = time() + $timeoutSeconds;

        while (time() < $deadline) {
            $status = proc_get_status($process);
            if (!$status['running']) {
                $exitCode = $status['exitcode'];
                $closeCode = proc_close($process);
                return $exitCode !== -1 ? $exitCode : $closeCode;
            }
            usleep(250_000);
        }

        proc_terminate($process, SIGTERM);
        usleep(500_000);

        if (proc_get_status($process)['running']) {
            proc_terminate($process, SIGKILL);
        }

        proc_close($process);

        return 124;
    }

    protected function isLocalInstall(): bool
    {
        if ($this->isLocalInstall === null) {
            $config = $this->readInstallerConfig();
            $this->isLocalInstall = !empty($config['isLocal']);
        }

        return $this->isLocalInstall;
    }

    protected function readInstallerConfig(): array
    {
        if ($this->installerConfig !== null) {
            return $this->installerConfig;
        }

        $this->installerConfig = [];
        $decodeConfig = static function (string $json): ?array {
            $decoded = json_decode($json, true);
            return is_array($decoded) ? $decoded : null;
        };

        $json = getenv('APPWRITE_INSTALLER_CONFIG');
        $path = InstallerServer::INSTALLER_CONFIG_FILE;
        $fileJson = file_exists($path) ? file_get_contents($path) : null;

        foreach ([$json, $fileJson] as $candidate) {
            if (!is_string($candidate) || $candidate === '') {
                continue;
            }

            $decoded = $decodeConfig($candidate);
            if ($decoded !== null) {
                $this->installerConfig = $decoded;
                return $this->installerConfig;
            }
        }

        return $this->installerConfig;
    }

    protected function getInstallerHostPath(): string
    {
        $config = $this->readInstallerConfig();
        if (!empty($config['hostPath'])) {
            return (string) $config['hostPath'];
        }

        $cwd = getcwd();
        return $cwd !== false ? $cwd : '.';
    }

    protected function buildFromProjectPath(string $suffix): string
    {
        if ($suffix !== '' && $suffix[0] !== '/') {
            $suffix = '/' . $suffix;
        }
        return dirname(__DIR__, 4) . $suffix;
    }

    protected function applyLocalPaths(bool $isLocalInstall, bool $force = false): void
    {
        if (!$isLocalInstall) {
            return;
        }
        if (!$force && $this->hostPath !== '') {
            return;
        }
        $this->path = '/usr/src/code';
        $this->hostPath = $this->getInstallerHostPath();
    }

    /**
     * Check if any installer-specific CLI params were explicitly passed.
     * When params like --database or --http-port are provided, the user
     * intends to run in CLI mode rather than launching the web installer.
     */
    private function hasExplicitCliParams(): bool
    {
        $argv = $_SERVER['argv'] ?? [];
        foreach ($argv as $arg) {
            if (\str_starts_with($arg, '--')) {
                return true;
            }
        }
        return false;
    }

    /**
     * Detect the database adapter from a pre-1.9.0 compose file by
     * checking which DB service exists or reading _APP_DB_HOST.
     */
    private function detectDatabaseFromCompose(Compose $compose): ?string
    {
        $serviceNames = array_keys($compose->getServices());
        $dbServices = ['mariadb', 'mongodb', 'postgresql'];
        foreach ($dbServices as $db) {
            if (in_array($db, $serviceNames, true)) {
                return $db;
            }
        }

        foreach ($compose->getServices() as $service) {
            if (!$service) {
                continue;
            }
            $env = $service->getEnvironment()->list();
            $host = $env['_APP_DB_HOST'] ?? null;
            if ($host !== null && in_array($host, $dbServices, true)) {
                return $host;
            }
        }

        return null;
    }

    protected function readExistingCompose(): string
    {
        $composeFile = $this->path . '/' . $this->getComposeFileName();
        $data = @file_get_contents($composeFile);
        return !empty($data) ? $data : '';
    }

    protected function generatePasswordValue(string $varName, Password $password): string
    {
        $value = $password->generate();
        if (!\preg_match(self::PATTERN_DB_PASSWORD_VAR, $varName)) {
            return $value;
        }

        return rtrim(strtr(base64_encode(hash('sha256', $value, true)), '+/', '-_'), '=');
    }

    protected function getComposeFileName(): string
    {
        return $this->isLocalInstall() ? 'docker-compose.web-installer.yml' : 'docker-compose.yml';
    }

    protected function getEnvFileName(): string
    {
        return $this->isLocalInstall() ? '.env.web-installer' : '.env';
    }

    private function isInstallationComplete(int $port): bool
    {
        $maxAttempts = 7200; // 2 hours maximum
        $attempt = 0;
        while ($attempt < $maxAttempts) {
            if (file_exists(InstallerServer::INSTALLER_COMPLETE_FILE)) {
                return true;
            }
            $handle = @fsockopen('localhost', $port, $errno, $errstr, 1);
            if ($handle === false) {
                return false;
            }
            \fclose($handle);
            \sleep(1);
            $attempt++;
        }
        return false;
    }

    private function waitForWebServer(int $port): bool
    {
        for ($attempt = 0; $attempt < self::WEB_SERVER_CHECK_ATTEMPTS; $attempt++) {
            $handle = @fsockopen('localhost', $port, $errno, $errstr, 1);
            if ($handle !== false) {
                \fclose($handle);
                return true;
            }
            \sleep(self::WEB_SERVER_CHECK_DELAY_SECONDS);
        }
        return false;
    }
}