<?php

/*

|--------------------------------------------------------------------------

| Create The Application

|--------------------------------------------------------------------------

|

| The first thing we will do is create a new Laravel application instance

| which serves as the "glue" for all the components of Laravel, and is

| the IoC container for the system binding all of the various parts.

|

*/

/**

 * 对于其中的instance register singleton 方法到时候单独拎出来说明

 *

 * 1.设置基础路径

 * 2.使用instance 方法 绑定app 和Illuminate\Foundation\Application类的关系

 * 3.使用instance 方法 绑定Container 和Illuminate\Foundation\Application类的关系

 * 4.app变量中注册事件服务EventServiceProvider

 * 5.app变量中注册日志服务LogServiceProvider

 * 6.app变量中注册路由服务RoutingServiceProvider

 * 7.别名的注册（vendor/laravel/framework/src/Illuminate/Foundation/Application.php文件中的 registerCoreContainerAliases 方法）

 */

$app = new Illuminate\Foundation\Application(

    realpath(__DIR__.'/../')

);

/*

|--------------------------------------------------------------------------

| Bind Important Interfaces

|--------------------------------------------------------------------------

|

| Next, we need to bind some important interfaces into the container so

| we will be able to resolve them when needed. The kernels serve the

| incoming requests to this application from both the web and CLI.

|

*/

/**

 * 把App\Http\Kernel::class 类下的参数 映射到lluminate\Contracts\Http\Kernel::class类中

 */

$app->singleton(

    Illuminate\Contracts\Http\Kernel::class,

    App\Http\Kernel::class

);

/**

 * 把App\Console\Kernel::class 类下的参数 映射到Illuminate\Contracts\Console\Kernel::class类中

 */

$app->singleton(

    Illuminate\Contracts\Console\Kernel::class,

    App\Console\Kernel::class

);

/**

 * 把App\Exceptions\Handler::class 类下的参数 映射到Illuminate\Contracts\Debug\ExceptionHandler::class类中

 */

$app->singleton(

    Illuminate\Contracts\Debug\ExceptionHandler::class,

    App\Exceptions\Handler::class

);

/*

|--------------------------------------------------------------------------

| Return The Application

|--------------------------------------------------------------------------

|

| This script returns the application instance. The instance is given to

| the calling script so we can separate the building of the instances

| from the actual running of the application and sending responses.

|

*/

return $app;