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/*
* This file is part of the ICanBoogie package.
*
* (c) Olivier Laviale <olivier.laviale@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace ICanBoogie;
use ICanBoogie\ActiveRecord\Connection;
use ICanBoogie\ActiveRecord\Model;
use ICanBoogie\ActiveRecord\ModelNotDefined;
use ICanBoogie\I18n;
use ICanBoogie\Module\Descriptor;
use ICanBoogie\Module\ModuleCollection;
/**
* A module of the framework.
*
* @property-read array $descriptor The descriptor of the module.
* @property-read string $flat_id Underscored identifier.
* @property-read string $id The identifier of the module, defined by {@link Descriptor::ID}.
* @property-read Model $model The primary model of the module.
* @property-read Module $parent The parent module, defined by {@link Descriptor::INHERITS}.
* @property-read string $path The path to the module, defined by {@link Descriptor::PATH}.
* @property-read string $title The localized title of the module.
* @property-read ModuleCollection $collection
* @property-read Core|Module\CoreBindings|Binding\ActiveRecord\CoreBindings|Binding\I18n\CoreBindings $app
*/
class Module extends Prototyped
{
/*
* PERMISSIONS:
*
* NONE: Well, you can't do anything
*
* ACCESS: You can access the module and view its records
*
* CREATE: You can create new records
*
* MAINTAIN: You can edit the records you created
*
* MANAGE: You can delete the records you created
*
* ADMINISTER: You have complete control over the module
*
*/
const PERMISSION_NONE = 0;
const PERMISSION_ACCESS = 1;
const PERMISSION_CREATE = 2;
const PERMISSION_MAINTAIN = 3;
const PERMISSION_MANAGE = 4;
const PERMISSION_ADMINISTER = 5;
/**
* Defines the name of the operation used to save the records of the module.
*/
const OPERATION_SAVE = 'save';
/**
* Defines the name of the operation used to delete the records of the module.
*/
const OPERATION_DELETE = 'delete';
/**
* Returns the identifier of the module as defined by its descriptor.
*
* This method is the getter for the {@link $id} magic property.
*
* @return string
*/
protected function get_id()
{
return $this->descriptor[Descriptor::ID];
}
/**
* Returns the path of the module as defined by its descriptor.
*
* This method is the getter for the {@link $path} magic property.
*
* @return string
*/
protected function get_path()
{
return $this->descriptor[Descriptor::PATH];
}
/**
* The descriptor of the module.
*
* @var array
*/
protected $descriptor;
/**
* Returns the descriptor of the module.
*
* This method is the getter for the {@link $descriptor} magic property.
*
* @return array
*/
protected function get_descriptor()
{
return $this->descriptor;
}
/**
* Cache for loaded models.
*
* @var ActiveRecord\Model[]
*/
private $models = [];
/**
* @var ModuleCollection
*/
private $collection;
/**
* @return ModuleCollection
*/
protected function get_collection()
{
return $this->collection;
}
/**
* Constructor.
*
* Initializes the {@link $descriptor} property.
*
* @param ModuleCollection $collection
* @param array $descriptor
*/
public function __construct(ModuleCollection $collection, array $descriptor)
{
$this->collection = $collection;
$this->descriptor = $descriptor;
}
/**
* Returns the identifier of the module.
*
* @return string
*/
public function __toString()
{
return $this->id;
}
/**
* Returns the _flat_ version of the module's identifier.
*
* This method is the getter for the {@link $flat_id} magic property.
*
* @return string
*/
protected function get_flat_id()
{
return strtr($this->id, [
'.' => '_',
'-' => '_'
]);
}
/**
* Returns the primary model of the module.
*
* This is the getter for the {@link $model} magic property.
*
* @return ActiveRecord\Model
*/
protected function get_model()
{
return $this->model();
}
/**
* Returns the module title, translated to the current language.
*
* @return string
*
* @deprecated
*/
protected function get_title()
{
$default = isset($this->descriptor[Descriptor::TITLE]) ? $this->descriptor[Descriptor::TITLE] : 'Undefined';
return $this->app->translate($this->flat_id, [], [ 'scope' => 'module_title', 'default' => $default ]);
}
/**
* Returns the parent module.
*
* @return Module|null
*/
protected function get_parent()
{
return $this->descriptor[Descriptor::INHERITS];
}
/**
* Checks if the module is installed.
*
* @param Errors $errors Error collection.
*
* @return mixed `true` if the module is installed, `false` if the module
* (or parts of) is not installed, `null` if the module has no installation.
*/
public function is_installed(Errors $errors)
{
if (empty($this->descriptor[Descriptor::MODELS]))
{
return null;
}
$rc = true;
foreach ($this->descriptor[Descriptor::MODELS] as $name => $tags)
{
if (!$this->model($name)->is_installed())
{
$errors[$this->id] = $errors->format("The model %name is not installed.", [
'name' => $name
]);
$rc = false;
}
}
return $rc;
}
/**
* Install the module.
*
* If the module has models they are installed.
*
* @param Errors $errors Error collection.
*
* @return boolean|null true if the module has successfully been installed, false if the
* module (or parts of the module) fails to install or null if the module has
* no installation process.
*/
public function install(Errors $errors)
{
if (empty($this->descriptor[Descriptor::MODELS]))
{
return null;
}
$rc = true;
foreach ($this->descriptor[Descriptor::MODELS] as $name => $tags)
{
$model = $this->model($name);
if ($model->is_installed())
{
continue;
}
try
{
$model->install();
}
catch (\Exception $e)
{
$errors[$this->id] = $errors->format('Unable to install model %model: !message', [ 'model' => $name, 'message' => $e->getMessage() ]);
$rc = false;
}
}
return $rc;
}
/**
* Uninstall the module.
*
* Basically it uninstall the models installed by the module.
*
* @return boolean|null `true` if the module was successfully uninstalled. `false` if the module
* (or parts of the module) failed to uninstall. `null` if there is no uninstall process.
*/
public function uninstall()
{
if (empty($this->descriptor[Descriptor::MODELS]))
{
return null;
}
$rc = true;
foreach ($this->descriptor[Descriptor::MODELS] as $name => $tags)
{
$model = $this->model($name);
if (!$model->is_installed())
{
continue;
}
if (!$model->uninstall())
{
$rc = false;
}
}
return $rc;
}
/**
* Get a model from the module.
*
* If the model has not been created yet, it is created on the fly.
*
* @param string $which The identifier of the model to get.
*
* @return Model The requested model.
*
* @throws ModelNotDefined when the model is not defined by the module.
* @throws \RuntimeException when the class of the model does not exists.
*/
public function model($which = 'primary')
{
if (empty($this->models[$which]))
{
if (empty($this->descriptor[Descriptor::MODELS][$which]))
{
throw new ModelNotDefined($which);
}
#
# resolve model tags
#
$callback = "resolve_{$which}_model_tags";
if (!method_exists($this, $callback))
{
$callback = 'resolve_model_tags';
}
$attributes = $this->$callback($this->descriptor[Descriptor::MODELS][$which], $which);
#
# COMPATIBILITY WITH 'inherit'
#
if ($attributes instanceof Model)
{
$this->models[$which] = $attributes;
return $attributes;
}
#
# create model
#
$class = $attributes[Model::CLASSNAME];
if (!class_exists($class))
{
throw new \RuntimeException(\ICanBoogie\format("Unable to instantiate model %model, the class %class does not exists.", [
'model' => "$this->id/$which",
'class' => $class
]));
}
$this->models[$which] = new $class($this->app->models, $attributes);
}
#
# return cached model
#
return $this->models[$which];
}
protected function resolve_model_tags($tags, $which)
{
$app = $this->app;
#
# The model may use another model, in which case the model to use is defined using a
# string e.g. 'contents' or 'terms/nodes'
#
if (is_string($tags))
{
$model_name = $tags;
if ($model_name == 'inherit')
{
$class = get_parent_class($this);
foreach ($app->modules->descriptors as $module_id => $descriptor)
{
if ($class != $descriptor['class'])
{
continue;
}
$model_name = $app->models[$module_id];
break;
}
}
$tags = [ Model::EXTENDING => $model_name ];
}
#
# defaults
#
$id = $this->id;
$tags += [
Model::CONNECTION => 'primary',
Model::ID => $which == 'primary' ? $id : $id . '/' . $which,
Model::EXTENDING => null
];
if (empty($tags[Model::NAME]))
{
$tags[Model::NAME] = ModuleCollection::format_model_name($id, $which);
}
#
# relations
#
if (isset($tags[Model::EXTENDING]))
{
$extends = &$tags[Model::EXTENDING];
if (is_string($extends))
{
$extends = $this->app->models[$extends];
}
if (!$tags[Model::CLASSNAME])
{
$tags[Model::CLASSNAME] = get_class($extends);
}
}
#
#
#
if (isset($tags[Model::IMPLEMENTING]))
{
$implements =& $tags[Model::IMPLEMENTING];
foreach ($implements as &$implement)
{
if (isset($implement['model']))
{
list($implement_id, $implement_which) = explode('/', $implement['model']) + [ 1 => 'primary' ];
if ($id == $implement_id && $which == $implement_which)
{
throw new \RuntimeException(\ICanBoogie\format('Model %module/%model implements itself !', [
'%module' => $id,
'%model' => $which
]));
}
$module = ($implement_id == $id) ? $this : \ICanBoogie\app()->modules[$implement_id];
$implement['table'] = $module->model($implement_which);
}
else if (is_string($implement['table']))
{
throw new \RuntimeException(\ICanBoogie\format('Model %model of module %module implements a table: %table', [
'%model' => $which,
'%module' => $id,
'%table' => $implement['table']
]));
}
}
}
#
# default class, if none was defined.
#
if (empty($tags[Model::CLASSNAME]))
{
$tags[Model::CLASSNAME] = 'ICanBoogie\ActiveRecord\Model';
}
#
# connection
#
$connection = $tags[Model::CONNECTION];
if (!($connection instanceof Connection))
{
$tags[Model::CONNECTION] = $this->app->connections[$connection];
}
return $tags;
}
/**
* Get a block.
*
* @param string $name The name of the block to get.
*
* @return mixed Depends on the implementation. Should return a string or an object
* implementing `__toString`.
*
* @throws \RuntimeException if the block is not defined.
*/
public function getBlock($name)
{
$args = func_get_args();
array_shift($args);
$callback = 'block_' . $name;
if (!method_exists($this, $callback))
{
throw new \RuntimeException(\ICanBoogie\format('The %method method is missing from the %module module to create block %type.', [
'%method' => $callback,
'%module' => $this->id,
'%type' => $name
]));
}
return call_user_func_array([ $this, $callback ], $args);
}
}