1.
Guitar Hero,
Wikipedia,VK, Perl, Like it!
Anatoly Sharifulin
YAPC::Russia 2012

2.
Another story
about me and Perl

3.
Guitar Hero: guitar,
drums and microphone
Finally got myself a present

4.
I’m Playing...

5.
Plus a singer :-)

6.
Guitar Hero for «kids»
Hand made :-)

7.
— Who plays or likes
Guitar Hero?

8.
— Why don't you
come by? :-)

9.
That's amazing, yeah,
but...

10.
1. Few familiar tracks

11.
2. Too many discs,
what to buy,
what songs are there?

12.
Eureka!
I know what to do...

13.
and I know Perl!

14.
1. Wikipedia
On wiki I found all disc and track details

15.
1. Wikipedia
Wrote a Perl script to parse all tracklists
and save to a database

16.
1. Wikipedia
map + grep + re + insert db

17.
2.VK.com
There are all (or almost all) tracks
and API on VKontakte!

18.
2.VK.com
Created a VK app,
accessed audio files through the OAuth Authorization

19.
2.VK.com
Wrote an ojo script to find links
to all mp3 through API

20.
2.VK.com
API Limits: no parallel requests
and 100 requests per hour from one user

21.
2.VK.com
Track search: corrected some tracks manually,
umlauts and NFD (thanks to @nordicdyno)

22.
my $t = NFD( $_->{title} );
$t =~ s/pM//og;
my $q = b( $t )->url_escape->to_string;
my $r = g(
"https://api.vkontakte.ru/method/audio.search?q=
$q&lyrics=1&count=1&access_token=$conf->{token}"
)->json;

23.
2.VK.com
With the same ojo wrote a downloader of mp3-files
(in one stream, so not to cross the limits)

24.
2.VK.com
The only screw-up of ojo:
all files are of the same length; solution:
$ENV{MOJO_MAX_MESSAGE_SIZE} = 100*1024*1024

25.
2.VK.com
Downloaded over 650 tracks,
no fun in listening to a local player...

26.
3. Frodio.com
Created a radiostation with a random playlist;
a tiny bug: not all tracks contain correct ID3-tags

27.
3. Frodio.com
Wrote a script to edit tags
using MP3::Tag (delete ID3v1, set ID3v2)

28.
3. Frodio.com
Artist — Track title [GH disc name]

29.
3. Frodio.com
Took two days to get a good radio
— Radio Guitar Hero
http://guitarhero.frodio.com

30.
Now I'm kept abreast
of all GH tracks

31.
Facebook Effect
But I felt lonely and posted to GH Facebook group
about radio

32.
Facebook Effect
2250+ Likes, 43 Shared, 76 Comments,
78 peak of online listeners

33.
Perl, Guitar Hero and
Rock’n’Roll

34.
use Perl or die;

35.
Thanks!
Anatoly Sharifulin
YAPC::Russia 2012