NAME

Net::Google::Drive::Simple - Simple modification of Google Drive data

SYNOPSIS

use feature 'say';
use Net::Google::Drive::Simple;

# requires a ~/.google-drive.yml file with an access token,
# see description below.
my $gd = Net::Google::Drive::Simple->new( 'version' => 3 ); # v3 interface (RECOMMENDED!)
my $gd = Net::Google::Drive::Simple->new();                 # v2 interface (OUTDATE!)

my $children = $gd->children( "/" ); # or any other folder /path/location

foreach my $item ( @$children ) {

    # item is a Net::Google::Drive::Simple::Item object

    if ( $item->is_folder ) {
        say "** ", $item->title, " is a folder";
    } else {
        say $item->title, " is a file ", $item->mimeType;
        eval { # originalFilename not necessary available for all files
          say $item->originalFilename(), " can be downloaded at ", $item->downloadUrl();
        };
    }
}

DESCRIPTION

Net::Google::Drive::Simple authenticates with a user's Google Drive and offers several convenience methods to list, retrieve, and modify the data stored in the 'cloud'. See eg/google-drive-upsync as an example on how to keep a local directory in sync with a remote directory on Google Drive.

All methods are documented based on the version you use:

• V3 (recommended)

  # Create default V3 API:
  my $gd = Net::Google:Drive::Simple->new( 'version' => 3 );

  The methods available are documented in Net::Google::Drive::Simple::V3.

• V2 (default, outdated)

  # Create default V2 API:
  my $gd = Net::Google:Drive::Simple->new();
  
  # or:
  my $gd = Net::Google:Drive::Simple->new( 'version' => 2 );

  The methods available are documented in Net::Google::Drive::Simple::V2.

GETTING STARTED

To get the access token required to access your Google Drive data via this module, you need to run the script eg/google-drive-init in this distribution.

Before you run it, you need to register your 'app' with Google Drive and obtain a client_id and a client_secret from Google:

https://developers.google.com/drive/web/enable-sdk

Click on "Enable the Drive API and SDK", and find "Create an API project in the Google APIs Console". On the API console, create a new project, click "Services", and enable "Drive API" (leave "drive SDK" off). Then, under "API Access" in the navigation bar, create a client ID, and make sure to register a an "installed application" (not a "web application"). "Redirect URIs" should contain "http://localhost". This will get you a "Client ID" and a "Client Secret".

Then, replace the following lines in eg/google-drive-init with the values received:

  # You need to obtain a client_id and a client_secret from
  # https://developers.google.com/drive to use this.
my $client_id     = "XXX";
my $client_secret = "YYY";

Then run the script. It'll start a web server on port 8082 on your local machine. When you point your browser at http://localhost:8082, you'll see a link that will lead you to Google Drive's login page, where you authenticate and then allow the app (specified by client_id and client_secret above) access to your Google Drive data. The script will then receive an access token from Google Drive and store it in ~/.google-drive.yml from where other scripts can pick it up and work on the data stored on the user's Google Drive account. Make sure to limit access to ~/.google-drive.yml, because it contains the access token that allows everyone to manipulate your Google Drive data. It also contains a refresh token that this library uses to get a new access token transparently when the old one is about to expire.

METHODS

• new()

  Constructor, creates a helper object to retrieve Google Drive data later.

  While v2 (the outdated version) is still supported by Google, we recommend you use v3:

  # Returns object of Net::Google::Drive::Simple::V3
  my $gd = Net::Google::Drive::Simple->new( 'version' => 3 );
  
  # Returns object of Net::Google::Drive::Simple::V2
  my $gd = Net::Google::Drive::Simple->new( 'version' => 2 );
  # or:
  my $gd = Net::Google::Drive::Simple->new();

  Read up on the methods in each class: Net::Google::Drive::Simple::V3 and Net::Google::Drive::Simple::V2.

Error handling

In case of an error while retrieving information from the Google Drive API, the methods above will return undef and a more detailed error message can be obtained by calling the error() method:

print "An error occurred: ", $gd->error();

LOGGING/DEBUGGING

Net::Google::Drive::Simple is Log4perl-enabled. To find out what's going on under the hood, turn on Log4perl:

use Log::Log4perl qw(:easy);
Log::Log4perl->easy_init($DEBUG);

LEGALESE

Copyright 2012-2019 by Mike Schilli, all rights reserved. This program is free software, you can redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR

2019, Nicolas R. cpan@atoomic.org 2012-2019, Mike Schilli cpan@perlmeister.com