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Hack-REST-API-Example/src/index.hack at master · mike2151/Hack-REST-API-Example · GitHub
mike2151
Hack-REST-API-Example
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//
Dependancies
require_once
(
__DIR__
.
'
/../vendor/hh_autoload.hh
'
);
use
type Facebook\HackRouter\{BaseRouter
,
HttpMethod}
;
/*
* Parsing Methods
*/
//
tuple to store method and route
newtype
MethodAndPath
=
(
HttpMethod
,
string
);
//
converts string to HttpMethod. Ex: "GET" => HttpMethod::GET
function
get_http_method_from_string
(
string
$str
) :
HttpMethod
{
switch
(
$str
) {
case
"
GET
"
:
return
HttpMethod
::
GET
;
case
"
POST
"
:
return
HttpMethod
::
POST
;
default
:
//
get is generally treated as the default
return
HttpMethod
::
GET
;
}
}
//
parse the server request to get the path and method
function
convert_request_to_path_and_method
(
array
$server
) :
MethodAndPath
{
$method
=
get_http_method_from_string
(
$server
[
'
REQUEST_METHOD
'
]);
$path
=
$server
[
'
REQUEST_URI
'
];
return
tuple
(
$method
,
$path
);
}
/*
* Router and Routes
*/
type
TResponder
=
(
function
(
dict
<
string
,
string
>):
string
);
//
this class can have any name
final
class
RESTAPIRouter
extends
BaseRouter
<
TResponder
> {
<<
__Override
>>
protected
function
getRoutes
(
):
dict
<
HttpMethod
,
dict
<
string
,
TResponder
>> {
return
dict
[
HttpMethod
::
GET
=>
dict
[
'
/
'
=>
(
$_params
)
==>
'
Getting the home page...
'
,
'
/example/{example_param}
'
=>
(
$params
)
==>
'
Example Page: accessing,
'
.
$params
[
'
example_param
'
],
],
HttpMethod
::
POST
=>
dict
[
'
/
'
=>
(
$_params
)
==>
'
Posting to the home page...
'
,
],
];
}
}
//
runs the code
<<
__EntryPoint
>>
function
main
():
noreturn
{
$router
=
new
RESTAPIRouter
();
$method_and_path
=
convert_request_to_path_and_method
(
$_SERVER
);
try
{
list
(
$responder
,
$params
)
=
$router
->
routeMethodAndPath(
$method_and_path
[
0
],
$method_and_path
[
1
]);
echo
$
responder
(
dict
(
$params
));
}
catch
(
Facebook
\
HackRouter
\
NotFoundException
$ex
) {
echo
"
Route does not exist
"
;
}
exit
(
0
);
}
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