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#!/usr/bin/perl
use DBI;
use Data::Dumper;
use JSON;
use feature qw/switch/;
use CGI;
my $IN = new CGI;
print $IN->header();
our $json = JSON->new->allow_nonref;
my $sql_username = "asdfus";
my $sql_dbname = "asdfus";
my $sql_passwd = "gTYgT&M6q";
sub not_specified_error{
my $param = shift;
my $callback = shift;
response({ ERROR => sprintf("Function parameter %s not defined", $param ) }, $callback);
exit(1);
}
sub response{
my $res = $json->pretty->encode(shift);
my $callback = shift;
if (defined $callback){
print $callback + "(" + $res + ")";
}
else {
print $res;
}
}
our $dbh = DBI->connect("DBI:mysql:$sql_dbname", $sql_username, $sql_passwd)
or die "Couldn't connect to database: " . DBI->errstr;
sub mysql_retrieve{
my ($statement, @args) = @_;
my $sth = $dbh->prepare($statement)
or die "Couldn't prepare statement: " . $dbh->errstr;
$sth->execute(@args)
or die "Couldn't execute statement: " . $sth->errstr;
my @rows = ();
while ($data = $sth->fetchrow_hashref()) {
foreach (keys $data){
$data->{$_} =~ s/NULL|null//ig;
$data->{$_} = $data->{$_} || "";
}
push(@rows, $data);
}
if ($sth->rows == 0) {
return { ERROR => "No ids matched `$data_id'.\n\n" };
}
$sth->finish;
return { SUCCESS => 1, data => \@rows };
}
sub main{
my $params = {};
my $query_string = $ENV{'QUERY_STRING'};
my @pairs = split(/[&;]/, $query_string);
foreach(@pairs){
my ($key, $value) = split(/=/, $_, 2);
$params->{$key} = $value;
}
my $callback = $params->{'callback'} || undef
unless(defined $params->{f}){
not_specified_error("f", $callback);
}
my $res;
given($params->{f}){
when(/info/){
unless(defined $params->{id}) { not_specified_error("id"); };
$res = mysql_retrieve('SELECT * FROM shaders WHERE id = ?', $params->{id});
}
when(/all/){
$res = mysql_retrieve('select * from shaders order by id');
}
when(/range/){
unless (defined $params->{limit}){ not_specified_error("limit") };
if (defined $params->{last}){
$res = mysql_retrieve(sprintf(' select * from shaders order by id desc limit %s , %s', $param->{last}, $params->{limit}));
}else{
$res = mysql_retrieve(sprintf(' select * from shaders order by id desc limit 0 , %s', $params->{limit}));
}
}
when(/history/){
unless(defined $params->{id}) { not_specified_error("id"); };
$res = mysql_retrieve('SELECT * FROM shaders WHERE shader_id = ? order by id', $params->{id});
}
when(/username/){
unless(defined $params->{username}) { not_specified_error("username") };
$res = mysql_retrieve('select * from shaders where username = ?', $params->{username});
}
when(/list_users/){
$res = mysql_retrieve('select distinct username from shaders;');
}
when(/originals/){
$res = mysql_retrieve('select shaders.* from shader_ids cross join shaders on shader_ids.id = shaders.shader_id');
}
default {
response({ ERROR => "Function parameter f improperly defined"}, $callback);
exit(1);
};
}
response($res, $callback);
}
main();
exit(0);
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