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<?php
namespace Coast;
use Coast\App\Exception;
use Coast\App\Executable;
use Coast\Dir;
use Coast\File;
use Coast\Lazy;
use Coast\Path;
use Coast\Request;
use Coast\Response;
use Closure;
class App implements Executable
{
use Executable\Implementation;
const MODE_CLI = 'cli';
const MODE_HTTP = 'http';
protected $_baseDir;
protected $_isSubapp = false;
protected $_envs = [];
protected $_params = [];
protected $_executables = [];
protected $_failureHandler;
protected $_errorHandler;
public function __construct($baseDir = null, array $envs = array())
{
$this->baseDir($baseDir);
$this->_envs = array_merge(array(
'MODE' => php_sapi_name() == 'cli' ? self::MODE_CLI : self::MODE_HTTP,
), $_ENV, $envs);
$this->param('app', $this);
}
public function baseDir($baseDir = null)
{
if (func_num_args() > 0) {
$baseDir = isset($baseDir) && !$baseDir instanceof Dir
? new Dir("{$baseDir}")
: $baseDir;
$this->_baseDir = $baseDir;
return $this;
}
return $this->_baseDir;
}
public function isSubapp($isSubapp = null)
{
if (func_num_args() > 0) {
$this->_isSubapp = $isSubapp;
return $this;
}
return $this->_isSubapp;
}
public function dir($path = null, $create = false)
{
if (!isset($this->_baseDir)) {
throw new App\Exception('Base directory not set');
}
return isset($path)
? $this->_baseDir->dir($path, $create)
: $this->_baseDir;
}
public function file($path)
{
if (!isset($this->_baseDir)) {
throw new App\Exception('Base directory not set');
}
return $this->_baseDir->file($path);
}
public function load($file, array $vars = array())
{
$file = !$file instanceof File
? new File("{$file}")
: $file;
$file = $file->isRelative()
? $this->file($file)
: $file;
return \Coast\load($file, array_merge(['app' => $this], $vars));
}
public function lazy($source, array $vars = array())
{
if (is_string($source)) {
$source = new File("{$source}");
$source = $source->isRelative()
? $this->file($source)
: $source;
}
return new Lazy($source, array_merge(['app' => $this], $vars));
}
public function env($name)
{
return isset($this->_envs[$name])
? $this->_envs[$name]
: null;
}
public function mode()
{
return $this->env('MODE');
}
public function isHttp()
{
return $this->mode() == self::MODE_HTTP;
}
public function isCli()
{
return $this->mode() == self::MODE_CLI;
}
public function param($name, $value = null)
{
if (func_num_args() > 1) {
if ($value instanceof \Coast\App\Access) {
$value->app($this);
}
$this->_params[$name] = $value;
return $this;
}
return isset($this->_params[$name])
? $this->_params[$name]
: null;
}
public function params(array $params = null)
{
if (func_num_args() > 0) {
foreach ($params as $name => $value) {
$this->param($name, $value);
}
return $this;
}
return $this->_params;
}
public function executable($executable, $subpath = null)
{
if (!$executable instanceof Closure && !$executable instanceof Executable) {
throw new App\Exception("Object is not a closure or instance of Coast\App\Executable");
}
if (isset($subpath)) {
$executable = new App\Subpath($executable, $subpath);
} else if ($executable instanceof App || $executable instanceof Lazy) {
$executable->isSubapp(true);
}
array_push($this->_executables, $executable instanceof Closure
? $executable->bindTo($this)
: $executable);
return $this;
}
public function execute(Request $req = null, Response $res = null)
{
$auto = false;
if (!isset($req)) {
$auto = true;
$req = (new Request())->fromGlobals();
$res = (new Response($req));
} else if (!isset($res)) {
throw new App\Exception('You must pass a Response object when passing a Request object');
}
$this->param('req', $req)
->param('res', $res);
try {
$this->preExecute($req, $res);
foreach ($this->_executables as $executable) {
if ($executable instanceof Executable && !$executable instanceof App) {
$executable->preExecute($req, $res);
}
}
$result = null;
foreach ($this->_executables as $executable) {
$result = call_user_func($executable instanceof Executable
? [$executable, 'execute']
: $executable, $req, $res);
if (isset($result)) {
break;
}
}
if (!$result && !$this->_isSubapp) {
if (isset($this->_failureHandler)) {
$result = call_user_func($this->_failureHandler, $req, $res);
} else {
throw new App\Exception('Nothing successfully handled the request');
}
}
foreach ($this->_executables as $executable) {
if ($executable instanceof Executable && !$executable instanceof App) {
$executable->postExecute($req, $res);
}
}
$this->postExecute($req, $res);
} catch (\Exception $e) {
if (isset($this->_errorHandler)) {
$result = call_user_func($this->_errorHandler, $req, $res, $e);
} else {
throw $e;
}
}
$this->param('req', null)
->param('res', null);
if ($auto) {
$res->toGlobals();
} else {
return $result;
}
}
public function failureHandler(Closure $failureHandler)
{
$this->_failureHandler = $failureHandler->bindTo($this);
return $this;
}
public function errorHandler(Closure $errorHandler)
{
$this->_errorHandler = $errorHandler->bindTo($this);
return $this;
}
public function __set($name, $value)
{
return $this->param($name, $value);
}
public function __get($name)
{
$value = $this->param($name);
return $value;
}
public function __isset($name)
{
return $this->param($name) !== null;
}
public function __unset($name)
{
return $this->param($name, null);
}
public function __call($name, array $args)
{
$value = $this->param($name);
if (!is_callable($value)) {
throw new \Coast\App\Exception("Param '{$name}' is not callable");
}
return call_user_func_array($value, $args);
}
}