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<?php
declare
(strict_types=
1
);
/*
* This file is part of the Geocoder package.
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @license MIT License
*/
namespace
Geocoder
\
Plugin
;
use
Geocoder
\
Collection
;
use
Geocoder
\
Exception
\
Exception
;
use
Geocoder
\
Exception
\
LogicException
;
use
Geocoder
\
Plugin
\
Exception
\
LoopException
;
use
Geocoder
\
Plugin
\
Promise
\
GeocoderFulfilledPromise
;
use
Geocoder
\
Plugin
\
Promise
\
GeocoderRejectedPromise
;
use
Geocoder
\
Provider
\
Provider
;
use
Geocoder
\
Query
\
GeocodeQuery
;
use
Geocoder
\
Query
\
Query
;
use
Geocoder
\
Query
\
ReverseQuery
;
/**
* @author Joel Wurtz <joel.wurtz@gmail.com>
* @author Tobias Nyholm <tobias.nyholm@gmail.com>
*/
class
PluginProvider
implements
Provider
{
/**
* @var Provider
*/
private
$
provider
;
/**
* @var Plugin[]
*/
private
$
plugins
;
/**
* A list of options.
*
* @var array{max_restarts?: int<0, max>}
*/
private
$
options
;
/**
* @param Plugin[] $plugins
* @param array{max_restarts?: int<0, max>} $options
*/
public
function
__construct
(
Provider
$
provider
,
array
$
plugins
= [],
array
$
options
= [])
{
$
this
->
provider
=
$
provider
;
$
this
->
plugins
=
$
plugins
;
$
this
->
options
=
$
this
->
configure
(
$
options
);
}
public
function
geocodeQuery
(
GeocodeQuery
$
query
):
Collection
{
$
pluginChain
=
$
this
->
createPluginChain
(
$
this
->
plugins
,
function
(
GeocodeQuery
$
query
) {
try
{
return
new
GeocoderFulfilledPromise
(
$
this
->
provider
->
geocodeQuery
(
$
query
));
}
catch
(
Exception
$
exception
) {
return
new
GeocoderRejectedPromise
(
$
exception
);
}
});
return
$
pluginChain
(
$
query
)->
wait
();
}
public
function
reverseQuery
(
ReverseQuery
$
query
):
Collection
{
$
pluginChain
=
$
this
->
createPluginChain
(
$
this
->
plugins
,
function
(
ReverseQuery
$
query
) {
try
{
return
new
GeocoderFulfilledPromise
(
$
this
->
provider
->
reverseQuery
(
$
query
));
}
catch
(
Exception
$
exception
) {
return
new
GeocoderRejectedPromise
(
$
exception
);
}
});
return
$
pluginChain
(
$
query
)->
wait
();
}
public
function
getName
():
string
{
return
$
this
->
provider
->
getName
();
}
/**
* Configure the plugin provider.
*
* @param array{max_restarts?: int<0, max>} $options
*
* @return array{max_restarts: int<0, max>}
*/
private
function
configure
(
array
$
options
= []):
array
{
$
defaults
= [
'
max_restarts
'
=>
10
,
];
$
config
=
array_merge
(
$
defaults
,
$
options
);
// Make sure no invalid values are provided
if
(
count
(
$
config
) !==
count
(
$
defaults
)) {
throw
new
LogicException
(
sprintf
(
'
Valid options to the PluginProviders are: %s
'
,
implode
(
'
,
'
,
array_values
(
$
defaults
))));
}
return
$
config
;
}
/**
* Create the plugin chain.
*
* @param Plugin[] $pluginList A list of plugins
* @param callable $clientCallable Callable making the HTTP call
*
* @return callable
*/
private
function
createPluginChain
(
array
$
pluginList
,
callable
$
clientCallable
)
{
$
firstCallable
=
$
lastCallable
=
$
clientCallable
;
while
(
$
plugin
=
array_pop
(
$
pluginList
)) {
$
lastCallable
=
function
(
Query
$
query
)
use
(
$
plugin
,
$
lastCallable
, &
$
firstCallable
) {
return
$
plugin
->
handleQuery
(
$
query
,
$
lastCallable
,
$
firstCallable
);
};
$
firstCallable
=
$
lastCallable
;
}
$
firstCalls
=
0
;
$
firstCallable
=
function
(
Query
$
query
)
use
(
$
lastCallable
, &
$
firstCalls
) {
if
(
$
firstCalls
>
$
this
->
options
[
'
max_restarts
'
]) {
throw
LoopException::
create
(
'
Too many restarts in plugin provider
'
,
$
query
);
}
++
$
firstCalls
;
return
$
lastCallable
(
$
query
);
};
return
$
firstCallable
;
}
}
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