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https://github.com/headio/phalcon-bootstrap

A flexible application bootstrap for Phalcon-based projects
https://github.com/headio/phalcon-bootstrap

api bootstrapping cli di-container modular mvc phalcon phalcon-bootstrap phalcon4 phalcon5 php7 php72 php73 php74 php8 php80

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A flexible application bootstrap for Phalcon-based projects

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# Phalcon application bootstrap

A flexible application bootstrap for Phalcon-based projects

[![Build Status](https://travis-ci.com/headio/phalcon-bootstrap.svg?branch=5.x)](https://travis-ci.com/headio/phalcon-bootstrap) [![Coverage Status](https://coveralls.io/repos/github/headio/phalcon-bootstrap/badge.svg?branch=5.x)](https://coveralls.io/github/headio/phalcon-bootstrap?branch=5.x)

## Description

This library provides flexible application bootstrapping, encapsulating module registration (or handler registration for micro applications), event management and middleware logic assignment for mvc, micro and cli-based applications.
A simple factory instantiates the dependency injection container, encapsulating the registration of service dependency definitions defined in the configuration setttings.

## Dependencies

* PHP >=8.0
* Phalcon >=5.0.0

See composer.json for more details

## Installation

### Composer

Open a terminal window and run:

```bash
composer require headio/phalcon-bootstrap
```

## Usage

### Micro applications (Api, prototype or micro service)

First create a config definition file inside your Phalcon project. This file should include the configuration settings, service & middleware definitions and a path to your handlers.

To get started, let's assume the following project structure:

```bash
├── public
│ ├── index.php
├── src
│ ├── Config
│ │ │── Config.php
│ │ │── Handlers.php
│ │── Controller
│ │── Domain
│ │── Middleware
│ │── Service
│ │── Var
│ │ │── Log
├── tests
├── vendor
├── Boot.php
├── codeception.yml
├── composer.json
├── .gitignore
├── README.md
└── .travis.yml
```

and your PSR-4 autoload declaration is:

```json
{
"autoload": {
"psr-4": {
"Foo\\": "src/"
}
}
}
```

Create a config file **Config.php** inside the **Config** directory and copy-&-paste the following definition:

```php
dirname(__DIR__) . DIRECTORY_SEPARATOR,
'debug' => true,
'locale' => 'en_GB',
'logPath' => dirname(__DIR__) .
DIRECTORY_SEPARATOR . 'Var' .
DIRECTORY_SEPARATOR . 'Log' .
DIRECTORY_SEPARATOR,
'handlerPath' => __DIR__ . DIRECTORY_SEPARATOR . 'Handlers.php',
'middleware' => [
NotFoundMiddleware::class => 'before'
],
'services' => [
'Foo\Service\EventManager',
'Foo\Service\Logger',
],
'timezone' => 'Europe\London'
];
```

The **handlerPath** declaration must include your handlers; the best strategy is to utilize Phalcon collections. The contents of this file might look something like this:

```php
setHandler(Index::class, true);
$handler->setPrefix('/');
$handler->get('/', 'indexAction', 'apiIndex');
$app->mount($handler);
```

Now, create an index file inside the **public** directory and copy-&-paste the following:

```php
createDefaultMvc();

// Environment
if (extension_loaded('mbstring')) {
mb_internal_encoding('UTF-8');
mb_substitute_character('none');
}

set_error_handler(
function ($severity, $message, $file, $line) {
if (!(error_reporting() & $severity)) {
// Unmasked error context
return;
}
throw new \ErrorException($message, 0, $severity, $file, $line);
}
);

set_exception_handler(
function (Throwable $e) use ($di) {
$di->get('logger')->error($e->getMessage(), ['exception' => $e]);

// Verbose exception handling for development
if ($di->get('config')->debug) {
}

exit(1);
}
);

// Run the application
return Bootstrap::handle($di)->run($_SERVER['REQUEST_URI'], Bootstrap::Micro);
})();
```

### Mvc applications

Create a config definition file inside your Phalcon project. This file should include your configuration settings and service & middleware definitions.

Let's assume the following mvc project structure:

```bash
├── public
│ ├── index.php
├── src
│ ├── Config
│ │ │── Config.php
│ │── Controller
│ │── Domain
│ │── Middleware
│ │── Module
│ │ │── Admin
│ │ │ │── Controller
│ │ │ │── Form
│ │ │ │── Task
│ │ │ │── View
│ │ │ │── Module.php
│ │── Service
│ │── Var
│ │ │── Log
├── tests
├── vendor
├── Boot.php
├── codeception.yml
├── composer.json
├── .gitignore
├── README.md
└── .travis.yml
```

and your PSR-4 autoload declaration is:

```json
{
"autoload": {
"psr-4": {
"Foo\\": "src/"
}
}
}
```

Create a config file **Config.php** inside the **Config** directory and copy-&-paste the following definition:

```php
[
'adapter' => 'Apcu',
'options' => [
'lifetime' => 3600 * 24 * 30,
'prefix' => 'annotations',
],
],
'applicationPath' => dirname(__DIR__) . DIRECTORY_SEPARATOR,
'baseUri' => '/',
'debug' => true,
'dispatcher' => [
'defaultAction' => 'index',
'defaultController' => 'Admin',
'defaultControllerNamespace' => 'Foo\\Module\\Admin\\Controller',
'defaultModule' => 'admin'
],
'locale' => 'en_GB',
'logPath' => dirname(__DIR__) .
DIRECTORY_SEPARATOR . 'Var' .
DIRECTORY_SEPARATOR . 'Log' .
DIRECTORY_SEPARATOR,
'modules' => [
'admin' => [
'className' => 'Foo\\Module\\Admin\\Module',
'path' => dirname(__DIR__) . '/Module/Admin/Module.php'
],
],
'middleware' => [
'Foo\\Middleware\\Bar'
],
'routes' => [
'admin' => [
'Foo\Module\Admin\Controller\Admin' => '/admin',
],
],
'services' => [
'Foo\Service\EventManager',
'Foo\Service\Logger',
'Foo\Service\Annotation',
'Foo\Service\Router',
'Foo\Service\View'
],
'timezone' => 'Europe\London',
'useI18n' => true,
'view' => [
'defaultPath' => dirname(__DIR__) . '/Module/Admin/View/',
'compiledPath' => dirname(__DIR__) . '/Cache/Volt/',
'compiledSeparator' => '_',
]
];
```

Now, create an index file inside the **public** directory and paste the following:

```php
createDefaultMvc();

// Environment
if (extension_loaded('mbstring')) {
mb_internal_encoding('UTF-8');
mb_substitute_character('none');
}

set_error_handler(
function ($severity, $message, $file, $line) {
if (!(error_reporting() & $severity)) {
// Unmasked error context
return;
}
throw new \ErrorException($message, 0, $severity, $file, $line);
}
);

set_exception_handler(
function (Throwable $e) use ($di) {
$di->get('logger')->error($e->getMessage(), ['exception' => $e]);

// Verbose exception handling for development
if ($di->get('config')->debug) {
}

exit(1);
}
);

// Run the application
return Bootstrap::handle($di)->run($_SERVER['REQUEST_URI']);
})();
```

### Console application

Create a config definition file inside your Phalcon project. This file should include your configuration settings and service & middleware definitions.

Let's assume the following project structure:

```bash
├── src
│ ├── Config
│ │ │── Config.php
│ │── Domain
│ │── Middleware
│ │── Service
│ │── Task
│ │── Var
│ │ │── Log
├── tests
├── vendor
├── Cli.php
├── codeception.yml
├── composer.json
├── .gitignore
├── README.md
└── .travis.yml
```

and your PSR-4 autoload declaration is:

```json
{
"autoload": {
"psr-4": {
"Foo\\": "src/"
}
}
}
```

Create a config file **Config.php** inside the **Config** directory and copy-&-paste the following definition:

```php
dirname(__DIR__) . DIRECTORY_SEPARATOR,
'locale' => 'en_GB',
'logPath' => dirname(__DIR__) .
DIRECTORY_SEPARATOR . 'Var' .
DIRECTORY_SEPARATOR . 'Log' .
DIRECTORY_SEPARATOR,
'debug' => true,
'dispatcher' => [
'defaultTaskNamespace' => 'Foo\\Task',
],
'middleware' => [
],
'services' => [
'Foo\Service\EventManager',
'Foo\Service\Logger',
'Foo\Service\ConsoleOutput',
],
'timezone' => 'Europe\London'
];
```

Finally, paste the following bootstrap code inside the **Cli.php** file:

```php
createDefaultCli();

// Environment
set_error_handler(
function ($severity, $message, $file, $line) {
if (!(error_reporting() & $severity)) {
// Unmasked error context
return;
}
throw new \ErrorException($message, 0, $severity, $file, $line);
}
);

set_exception_handler(
function (Throwable $e) use ($di) {
$di->get('logger')->error($e->getMessage(), ['exception' => $e]);
$output = $di->get('consoleOutput');
$output->writeln('' . $e->getMessage() . '');

// Verbose exception handling for development
if ($di->get('config')->debug) {
$output->writeln(sprintf(
'Exception thrown in: %s at line %d.',
$e->getFile(),
$e->getLine())
);
}

exit(1);
}
);

// Run the application
return Bootstrap::handle($di)->run($_SERVER);
})();
```

## DI container factory

From the examples above you will have noticed that we instantiated Phalcon's factory default mvc or cli container services.

```php
$config = new Config(
require __DIR__ . '/src/Config/Config.php'
);

// Micro/Mvc
$di = (new DiFactory($config))->createDefaultMvc();

// Cli
$di = (new DiFactory($config))->createDefaultCli();
```

Naturally, you can override the factory default services by simply defining a service definition in your config file, like so:

```php
[
'Foo\Service\Router'
]
]

```

Then create the respective service provider and modify its behaviour:

```php
setShared(
'router',
function () use ($di) {
$config = $di->get('config');

if ($config->get('cli')) {
$service = new CliService();
$service->setDefaultModule($config->dispatcher->defaultTaskModule);
return $service;
}

if (!$config->has('modules')) {
throw new OutOfRangeException('Undefined modules');
}

if (!$config->has('routes')) {
throw new OutOfRangeException('Undefined routes');
}

$service = new MvcService(false);
$service->removeExtraSlashes(true);
$service->setDefaultNamespace($config->dispatcher->defaultControllerNamespace);
$service->setDefaultModule($config->dispatcher->defaultModule);
$service->setDefaultController($config->dispatcher->defaultController);
$service->setDefaultAction($config->dispatcher->defaultAction);

foreach ($config->get('modules')->toArray() ?? [] as $module => $settings) {
if (!$config->routes->get($module, false)) {
continue;
}
foreach ($config->get('routes')->{$module}->toArray() ?? [] as $key => $val) {
$service->addModuleResource($module, $key, $val);
}
}

return $service;
}
);
}
}
```

For complete control over the registration of service dependencies, or more generally, the services available in the container, you have two options: firstly, you can use Phalcon's base DI container, which is an empty container; or you can create your own DI container by implementing Phalcon's **Phalcon\Di\DiInterface**. See the following for an example:

```php
use Phalcon\Di;
use Foo\Bar\MyDi;

$config = new Config(
require __DIR__ . '/src/Config/Config.php'
);

// Empty DI container
$di = (new DiFactory($config))->create(new Di);

// Custom DI container
$di = (new DiFactory($config))->create(new MyDi);
```

The DI factory **create method** expects an instance of **Phalcon\Di\DiInterface**.

## Application factory

The bootstrap factory will automatically instantiate a Phalcon application and return the response. If you want to bootstrap the application yourself, you can use the application factory directly.

```php
createDefaultMvc();

/** @var Phalcon\Mvc\Application */
$app = (new AppFactory($di))->createForMvc();

// Do some stuff

/** @var Phalcon\Mvc\ResponseInterface|bool */
$response = $app->handle($_SERVER['REQUEST_URI']);

if ($response instanceof \Phalcon\Mvc\ResponseInterface) {
return $response->send();
}

return $response;
} catch(\Throwable $e) {
echo $e->getMessage();
}
```

## Testing

To see the tests, run:

```bash
php vendor/bin/codecept run -f --coverage --coverage-text
```

## License

Phalcon bootstrap is open-source and licensed under [MIT License](http://opensource.org/licenses/MIT).