LINE::Bot::API - SDK of the LINE Messaging API for Perl
# in the synopsis.psgi use strict; use warnings; use LINE::Bot::API; use LINE::Bot::API::Builder::SendMessage; use Plack::Request; my $bot = LINE::Bot::API->new( channel_secret => $channel_secret, channel_access_token => $channel_access_token, ); sub { my $req = Plack::Request->new(shift); unless ($req->method eq 'POST' && $req->path eq '/callback') { return [200, [], ['Not Found']]; } unless ($bot->validate_signature($req->content, $req->header('X-Line-Signature'))) { return [200, [], ['failed to validate signature']]; } my $events = $bot->parse_events_from_json($req->content); for my $event (@{ $events }) { next unless $event->is_message_event && $event->is_text_message; my $messages = LINE::Bot::API::Builder::SendMessage->new; $messages->add_text( text => $event->text ); $bot->reply_message($event->reply_token, $messages->build); } return [200, [], ["OK"]]; };
LINE::Bot::API is a client library which lets you easily start using the LINE Messaging API. You can create a bot which runs on the LINE app by registering for a LINE Messaging API account. You can create a Messaging API account from the LINE Business Center.
You can find the Channel secret and Channel access token on the Basic information page on the Channel Console which you can access from the LINE Business Center.
Use this documentation and the LINE Developers documentation to get you started developing your own bot!
Create a new LINE::Bot::API instance.
my $bot = LINE::Bot::API->new( channel_secret => $channel_secret, channel_access_token => $channel_access_token, );
Send reply messages to a user, room or group.
my $messages = LINE::Bot::API::Builder::SendMessage->new; $messages->add_text( text => 'Example reply text' ); my $ret = $bot->reply_message($reply_token, $messages->build); unless ($ret->is_success) { # error warn $ret->message; for my $detail (@{ $ret->details // []}) { warn " detail: " . $detail->{message}; } }
You can get a reply_token from a webhook event object. See the documentation for the parse_events_from_json($json) method.
reply_token
parse_events_from_json($json)
See also the API reference of this method: https://developers.line.biz/en/reference/messaging-api/#send-reply-message
Send push messages to a user, room or group.
my $messages = LINE::Bot::API::Builder::SendMessage->new; $messages->add_text( text => 'Example push text' ); $bot->push_message($user_id, $messages->build);
You can get a user_id, room_id or group_id from a webhook event object See the documentation for the parse_events_from_json($json) method.
user_id
room_id
group_id
See also the LINE Developers API reference of this method: https://developers.line.biz/en/reference/messaging-api/#send-push-message
Send push messages to multiple users.
my $messages = LINE::Bot::API::Builder::SendMessage->new; $messages->add_text( text => 'Example push text' ); $bot->multicast([ $user_id ], $messages->build);
You can get a user_id from a webhook event object. See the documentation for the parse_events_from_json($json) method.
See also the LINE Developers API reference of this method: https://developers.line.biz/en/reference/messaging-api/#send-multicast-messages
my $req = Plack::Request->new( ... ); unless ($bot->validate_signature($req->content, $req->header('X-Line-Signature'))) { die 'failed to signature validation'; }
Parse webhook event objects and build LINE::Bot::API::Event instances.
my $req = Plack::Request->new( ... ); my $events = $bot->parse_events_from_json($req->content); for my $event (@{ $events }) { unless ($event->is_unfollow_event && $event->is_leave_event) { # Get a reply_token my $reply_token = $event->reply_token; } if ($event->is_user_event) { # Get a user_id my $user_id = $event->user_id; } if ($event->is_room_event) { # Get a room_id my $room_id = $event->room_id; } if ($event->is_group_event) { # Get a group_id my $group_id = $event->group_id; } if ($event->is_message_event) { # Get a message id my $message_id = $event->message_id; } }
Bot leaves a room.
$bot->leave_room($room_id);
You can get a room_id by a Webhook Event Object. And see also parse_events_from_json($json) method's document.
Bot leaves a group.
$bot->leave_group($group_id);
You can get a group_id from a webhook event object. See the documentation for the parse_events_from_json($json) method.
Get the original file which was sent by user.
my $ret = $bot->get_message_content($message_id); if ($ret->is_success) { my $filename = $ret->fh->filename; open my $fh, '<', $file or die "$!: $file"; ... }
You can get a message_id from a webhook event object. See the documentation for the parse_events_from_json($json) method.
message_id
You can also see the online API reference documentation.
See also the LINE Developers API reference of this method: https://developers.line.biz/en/reference/messaging-api/#get-content
Get user profile information.
my $ret = $bot->get_profile($user_id); if ($ret->is_success) { say $ret->display_name; say $ret->user_id; say $ret->picture_url; say $ret->status_message; }
See also the LINE Developers API reference of this method: https://developers.line.biz/en/reference/messaging-api/#get-profile
get_number_of_sent_reply_messages($date)
Gets the number of messages sent with the /bot/message/reply endpoint.
/bot/message/reply
The number of messages retrieved by this operation does not include the number of messages sent from LINE@ Manager.
The $date parameter is "yyyyMMdd" format.
$date
get_number_of_sent_push_messages($date)
Gets the number of messages sent with the /bot/message/push endpoint.
/bot/message/push
Date the messages were sent
Format: yyyyMMdd (Example: 20191231) Timezone: UTC+9
get_number_of_sent_multicast_messages($date)
Gets the number of messages sent with the /bot/message/multicast endpoint.
/bot/message/multicast
See the LINE Developers API reference about Message objects
When the LINE::Bot::API::Builder::SendMessage class is used, it is possible easily to build a send message object. That class supports a fluent interface.
LINE::Bot::API::Builder::SendMessage
my $messages = LINE::Bot::API::Builder::SendMessage->new( )->add_text( text => 'Closing the distance', )->add_image( image_url => 'http://example.com/image.jpg', preview_url => 'http://example.com/image_preview.jpg', ); $bot->reply_message($reply_token, $messages->build);
Build a text type object.
my $messages = LINE::Bot::API::Builder::SendMessage->new( )->add_text( text => 'Closing the distance', ); $bot->reply_message($reply_token, $messages->build);
Build an image type object.
my $messages = LINE::Bot::API::Builder::SendMessage->new( )->add_image( image_url => 'http://example.com/image.jpg', preview_url => 'http://example.com/image_preview.jpg', ); $bot->reply_message($reply_token, $messages->build);
Build a video type object.
my $messages = LINE::Bot::API::Builder::SendMessage->new( )->add_video( video_url => 'http://example.com/video.mp4', preview_url => 'http://example.com/video_preview.jpg', ); $bot->reply_message($reply_token, $messages->build);
Build an audio type object.
my $messages = LINE::Bot::API::Builder::SendMessage->new( )->add_audio( audio_url => 'http://example.com/image.m4a', duration => 3601_000, # msec ); $bot->reply_message($reply_token, $messages->build);
Build a location type object.
my $messages = LINE::Bot::API::Builder::SendMessage->new( )->add_location( title => 'LINE Corporation.', address => 'Hikarie Shibuya-ku Tokyo 151-0002', latitude => 35.6591, longitude => 139.7040, ); $bot->reply_message($reply_token, $messages->build);
Build a sticker type object.
my $messages = LINE::Bot::API::Builder::SendMessage->new( )->add_sticker( package_id => '1', sticker_id => '2', ); $bot->reply_message($reply_token, $messages->build);
Build an imagemap type object. You can use a helper module for the imagemap type.
my $imagemap = LINE::Bot::API::Builder::ImagemapMessage->new( base_url => 'https://example.com/bot/images/rm001', alt_text => 'this is an imagemap', base_width => 1040, base_height => 1040, )->add_uri_action( uri => 'http://example.com/', area_x => 0, area_y => 0, area_width => 1040, area_height => 520, )->add_message_action( text => 'message', area_x => 0, area_y => 520, area_width => 1040, area_height => 520, ); my $messages = LINE::Bot::API::Builder::SendMessage->new( )->add_imagemap($imagemap->build); $bot->reply_message($reply_token, $messages->build);
Build a template type object. You can use a helper module for the template type.
my $buttons = LINE::Bot::API::Builder::TemplateMessage->new_buttons( alt_text => 'this is a buttons template', image_url => 'https://example.com/bot/images/image.jpg', title => 'buttons', text => 'description', )->add_postback_action( label => 'postback', data => 'postback data', text => 'postback message', )->add_message_action( label => 'message', text => 'message', )->add_uri_action( label => 'uri', uri => 'http://example.com/', )->add_message_action( label => 'message2', text => 'message2', ); my $messages = LINE::Bot::API::Builder::SendMessage->new( )->add_template($buttons->build); $bot->reply_message($reply_token, $messages->build);
my $confirm = LINE::Bot::API::Builder::TemplateMessage->new_confirm( alt_text => 'this is a confirm template', text => 'confirm', )->add_postback_action( label => 'postback', data => 'postback data', text => 'postback message', )->add_message_action( label => 'message', text => 'message', )->add_uri_action( label => 'uri', uri => 'http://example.com/', ); my $messages = LINE::Bot::API::Builder::SendMessage->new( )->add_template($confirm->build); $bot->reply_message($reply_token, $messages->build);
my $carousel = LINE::Bot::API::Builder::TemplateMessage->new_carousel( alt_text => 'this is a carousel template', ); for my $i (1..5) { my $column = LINE::Bot::API::Builder::TemplateMessage::Column->new( image_url => 'https://example.com/bot/images/item.jpg', title => "carousel $i", text => "description $i", )->add_postback_action( label => 'postback', data => 'postback data', text => 'postback message', )->add_message_action( label => 'message', text => 'message', )->add_uri_action( label => 'uri', uri => 'http://example.com/', ); $carousel->add_column($column->build); } my $messages = LINE::Bot::API::Builder::SendMessage->new( )->add_template($carousel->build); $bot->reply_message($reply_token, $messages->build);
my $carousel = LINE::Bot::API::Builder::TemplateMessage->new_image_carousel( alt_text => 'this is a image carousel template', ); my $column1 = LINE::Bot::API::Builder::TemplateMessage::ImageColumn->new( image_url => 'https://example.com/bot/images/item1.jpg', )->add_postback_action( label => 'postback', data => 'postback data', text => 'postback message', ); $carousel->add_column($column1->build); my $column2 = LINE::Bot::API::Builder::TemplateMessage::ImageColumn->new( image_url => 'https://example.com/bot/images/item2.jpg', )->add_message_action( label => 'message', text => 'message', ); $carousel->add_column($column2->build); my $column3 = LINE::Bot::API::Builder::TemplateMessage::ImageColumn->new( image_url => 'https://example.com/bot/images/item3.jpg', )->add_uri_action( label => 'uri', uri => 'http://example.com/', ); $carousel->add_column($column3->build); my $messages = LINE::Bot::API::Builder::SendMessage->new( )->add_template($carousel->build); $bot->reply_message($reply_token, $messages->build);
Copyright 2016 LINE Corporation
This Software Development Kit is licensed under The Artistic License 2.0. You may obtain a copy of the License at https://opensource.org/licenses/Artistic-2.0
LINE::Bot::API::Event, https://developers.line.biz/, https://at.line.me/
To install LINE::Bot::API, copy and paste the appropriate command in to your terminal.
cpanm
cpanm LINE::Bot::API
CPAN shell
perl -MCPAN -e shell install LINE::Bot::API
For more information on module installation, please visit the detailed CPAN module installation guide.