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use strict;
use warnings;
use utf8;
use File::Spec;
use File::Basename;
use lib File::Spec->catdir(dirname(__FILE__), 'extlib', 'lib', 'perl5');
use lib File::Spec->catdir(dirname(__FILE__), 'lib');
use Plack::Builder;
use Amon2::Lite;
our $VERSION = '0.01';
# put your configuration here
sub config {
my $c = shift;
my $mode = $c->mode_name || 'development';
+{
'DBI' => [
"dbi:SQLite:dbname=$mode.db",
'',
''
]
}
}
{
package MyTinyURL::Storage;
sub _random_string {
my $length = shift;
my @chars = ( 'A' .. 'Z', 'a' .. 'z', '0' .. '9' );
my $ret;
for ( 1 .. $length ) {
$ret .= $chars[ int rand @chars ];
}
return $ret;
}
sub setup_schema {
my ($class, $c) = @_;
$c->dbh->do(q{
CREATE TABLE IF NOT EXISTS url (
key VARCHAR(10) NOT NULL PRIMARY KEY,
url TEXT
);
});
$c->dbh->do(q{
CREATE INDEX IF NOT EXISTS url_url ON url (url);
});
}
sub get_url {
my ($class, $c, $key) = @_;
$class->setup_schema($c);
return $c->dbh->selectrow_array(q{SELECT url FROM url WHERE key=?}, {}, $key);
}
sub find_or_create_key {
my ($class, $c, $url) = @_; $url || die;
$class->setup_schema($c);
my $guard = $c->dbh->txn_scope;
{
my $key = $c->dbh->selectrow_array(
q{SELECT key FROM url WHERE url=?},
{}, $url );
$guard->commit;
return $key if $key;
}
my $key = sub {
for (1..16) {
my $key = _random_string(10);
my $cnt = $c->dbh->selectrow_array(q{SELECT COUNT(*) FROM url WHERE key=?}, {}, $key);
return $key if $cnt==0;
}
die "FATAL";
}->();
$c->dbh->do_i(q{INSERT INTO url }, {url => $url, key => $key});
$guard->commit();
return $key;
}
}
get '/' => sub {
my $c = shift;
return $c->render('index.tt');
};
get '/t/{key}' => sub {
my ($c, $args) = @_;
my $url = MyTinyURL::Storage->get_url($c, $args->{key});
return $url ? $c->redirect($url) : $c->res_404();
};
post '/api/create' => sub {
my $c = shift;
my $url = $c->req->param('url') || die "Missing mandatory parameter: url";
$url =~ m{^https?://} or die "Invalid url: $url";
my $key = MyTinyURL::Storage->find_or_create_key($c, $url);
my $res_url = URI->new_abs($c->uri_for('/t/' . $key), $c->req->base);
return $c->create_response(
200,
[
'Content-Type' => 'text/plain; charset=utf8',
'Content-Length' => length($res_url)
],
$res_url
);
};
# load plugins
__PACKAGE__->load_plugin('DBI');
__PACKAGE__->to_app(handle_static => 1);
__DATA__
@@ index.tt
<!doctype html>
<html>
<head>
<met charst="utf-8">
<title>MyTinyURL</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js"></script>
<script type="text/javascript" src="[% uri_for('/static/js/main.js') %]"></script>
<link rel="stylesheet" href="http://twitter.github.com/bootstrap/1.4.0/bootstrap.min.css">
</head>
<body>
<div class="container">
<header><h1>MyTinyURL</h1></header>
<section>
<form method="post" action="/create" id="TinyURLForm">
<input type="url" name="url" size="40" pattern="^https?://.+" required />
<input type="submit" value="Make Tiny URL" class="btn primary" />
</form>
<div id="Result"></div>
</section>
<footer>Powered by <a href="http://amon.64p.org">Amon2::Lite</a></footer>
</div>
</body>
</html>
@@ /static/js/main.js
$(function () {
$('#TinyURLForm').submit(function () {
$('#Result').hide();
$.ajax({
type: 'POST',
url: '/api/create',
data: $(this).serialize()
}).success(function (res) {
$('#Result').text("Result url is : " + res).show();
}).error(function (res) {
alert("ERROR");
});
return false;
});
});
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