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WebService-Soundcloud-0.04
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/ WebService::Soundcloud

NAME

WebService::Soundcloud - Thin wrapper around Soundcloud RESTful API!

VERSION

Version 0.02

SYNOPSIS

    #!/usr/bin/perl
    use WebService::Soundcloud;
    
    my $scloud = WebService::Soundcloud->new($client_id, $client_secret, 
                           { redirect_uri => 'http://mydomain.com/callback' }
                         );
    
    # Now get authorization url
    my $authorization_url = $scloud->get_authorization_url();
    
    # Redirect the user to authorization url
    use CGI;
    my $q = new CGI;
    $q->redirect($authorization_url);
    
    # In your '/callback' handler capture code params
    # Check for error
    if ($q->param(error)) {
        die "Authorization Failed: ". $q->param('error');
    }
    # Get authorization code
    my $code = $q->param('code');
    
    # Get Access Token
    my $access_token = $scloud->get_access_token($code);
    
    # Save access_token and refresh_token, expires_in, scope for future use
    my $oauth_token = $access_token->{access_token};
    
    # OAuth Dance is completed :-) Have fun now.

    # Default request and response formats are 'json'
    
    # a GET request '/me' - gets users details
    my $user = $scloud->get('/me');
    
    # a PUT request '/me' - updated users details
    my $user = $scloud->put('/me', encode_json(
                { 'user' => {
                  'description' => 'Have fun with Perl wrapper to Soundcloud API'
                } } ) );
                
    # Comment on a Track POSt request usage
    my $comment = $scloud->post('/tracks/<track_id>/comments', 
                            { body => 'I love this hip-hop track' } );
    
    # Delete a track
    my $track = $scloud->delete('/tracks/{id}');
    
    # Download a track
    my $file_path = $scloud->download('<track_id>', $dest_file);

DESCRIPTION

This module provides a wrapper around Soundcloud RESTful API to work with different kinds of soundcloud resources. It contains many functions for convenient use rather than standard Soundcloud RESTful API.

The complete API is documented at http://developers.soundcloud.com/docs.

In order to use this module you will need to register your application with Soundcloud at http://soundcloud.com/you/apps : your application will be given a client ID and a client secret which you will need to use to connect.

METHODS

new

Returns a newly created WebService::Soundcloud object. The first argument is $client_id, the second argument is $client_secret - these are required and will have been provided when you registered your application with Soundcloud The third optional argument is a HASHREF that contains additional parameters that may be required:

redirect_uri

This is the URI of your application to which the user will be redirected after they have authorised the connection with Soundcloud. This should be the same as the one provided when you registered your application and will be required for most applications.

client_id

Accessor for the Client ID that was provided when you registered your application.

client_secret

Accessor for the Client Secret that was provided when you registered your application.

redirect_uri

Accessor for the redirect_uri this can be passed as an option to the constructor or supplied later (before any connect call.) This should match to that provided when you registered your application.

It is the URI of your application that the user will be redirected (with the authorization code as a parameter,) after they have clicked "Connect" on the soundcloud connect page. This will not be used if you are using the credential based authentication to obtain the OAuth token (e.g if you are an application with no UI that is operating for a single user.)

basic_params

This returns a HASHREF that is suitable to be used as the basic parameters in most places, containing the application credentials (ID and Secret) and redirect_uri

ua

Returns the LWP::UserAgent object that will be used to connect to the API host

get_authorization_url

This method is used to get authorization url, user should be redirected for authenticate from soundcloud. This will return URL to which user should be redirected.

get_access_token

This method is used to receive access_token, refresh_token, scope, expires_in details from soundcloud once user is authenticated. access_token, refresh_token should be stored as it should be sent along with every request to access private resources on the user behalf.

The argument $code is required unless you are using credential based authentication, and will have been supplied to your redirect_uri after the user pressed "Connect" on the soundcloud connect page.

_access_token_params
get_access_token_refresh

This method is used to get new access_token by exchanging refresh_token before the earlier access_token is expired. You will receive new access_token, refresh_token, scope and expires_in details from soundcloud. access_token, refresh_token should be stored as it should be sent along with every request to access private resources on the user behalf.

If a scope of 'non-expiring' was supplied at the time the initial tokem was obtained then this should not be necessary.

request

This performs an HTTP request with the $method supplied to the supplied $url. The third argument $headers can be supplied to insert any required headers into the request, if $content is supplied it will be processed appropriately and inserted into the request.

An HTTP::Response will be returned and this should be checked to determine the status of the request.

get_object

This returns a decoded object corresponding to the URI given

It will for the response_format to 'json' for the request as parsing the XML is tricky given no schema.

get_list

This returns a decoded LIST REF of the list method specified by URI

Currently this will force response_format to 'json' as parsin the XML is tricky without a schema.

get(<URL>, <PARAMS>, <HEADERS>)

This method is used to dispatch GET request on the give URL(first argument). second argument is an anonymous hash request parameters to be send along with GET request. The third optional argument(<HEADERS>) is used to send headers. This method will return HTTP::Response object

$OBJ->post(<URL>, <CONTENT>, <HEADERS>)

This method is used to dispatch POST request on the give URL(first argument). second argument is the content to be posted to URL. The third optional argument(<HEADERS>) is used to send headers. This method will return HTTP::Response object

$OBJ->put(<URL>, <CONTENT>, <HEADERS>)

This method is used to dispatch PUT request on the give URL(first argument). second argument is the content to be sent to URL. The third optional argument(<HEADERS>) is used to send headers. This method will return HTTP::Response object

$OBJ->delete(<URL>, <PARAMS>, <HEADERS>)

This method is used to dispatch DELETE request on the give URL(first argument). second optional argument is an anonymous hash request parameters to be send along with DELETE request. The third optional argument(<HEADERS>) is used to send headers. This method will return HTTP::Response object

$OBJ->download(<TRACK_ID>, <DEST_FILE>)

This method is used to download a particular track id given as first argument. second argument is name of the destination path where the downloaded track will be saved to. This method will return the file path of downloaded track.

_our_redirect

This subroutime is intended to be used as a callback on 'response_redirect' It processes the response to make a new request for the redirect with the Authorization header removed so that EC3 doesn't get confused.

_is_redirect

Helper subroutine to determine if the code indicates a redirect.

request_format

Accessor for the request format to be used. Acceptable values are 'json' and 'xml'. The default is 'json'.

response_format

Accessor for the response format to be used. The allowed values are 'json' and 'xml'. The default is 'json'. This will cause the appropriate setting of the Accept header in requests.

parse_content

This will return the parsed object corresponding to the response content passed as asn argument. It will select the appropriate parser based on the value of 'response_format'.

It will return undef if there is a problem with the parsing.

INTERNAL SUBROUTINES/METHODS

Please do not use these internal methods directly. They are internal to WebService::Soundcloud module itself. These can be renamed/deleted/updated at any point of time in future.

$OBJ->_access_token(<PARAMS>)

This method is used to get access_token from soundcloud. This will be called from get_access_token and get_access_token_refresh methods.

$OBJ->_access_token_url(<PARAMS>)

This method is used to get access_token_url of soundcloud RESTful API. This will be called from _access_token method.

$OBJ->_build_url(<PATH>, PARAMS>)

This method is used to prepare absolute URL for a given path and request parameters.

$OBJ->_build_headers(<HEADERS>)

This method is used to set extra headers to the current HTTP Request.

$OBJ->log(<MSG>)

This method is used to write some text to STDERR.

AUTHOR

Mohan Prasad Gutta, <mohanprasadgutta at gmail.com>

CONTRIBUTORS

Jonathan Stowe jns+gh@gellyfish.co.uk

BUGS

Parts of this are extremely difficult to test properly so there almost certainly will be bugs, please feel free to fix and send me a patch if you find one.

SUPPORT

You can find documentation for this module with the perldoc command. perldoc WebService::Soundcloud You can also look for information at:

LICENSE AND COPYRIGHT

Copyright 2013 Mohan Prasad Gutta. This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License. See http://dev.perl.org/licenses/ for more information.