Add perl/kumar-asshole.pl

Dependencies:
- DateTime
- Mail::Webmail::Gmail
- YAML

TODO: Rewrite using a different GMail interface.

perl/kumar-asshole.pl

@@ -0,0 +1,88 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+use YAML;
+use DateTime;
+use Mail::Webmail::Gmail;
+
+# Config
+my $conf = Load( <<'...' );
+---
+kumar_mail: kumar.a@examle.com
+database_regex: \S+_staging
+keywords_regex: sorry|help|wrong
+backup_path: /home/backups/databases/
+...
+$conf->{'database_regex'} = qr/ ( $conf->{'database_regex'} ) /x;
+$conf->{'keywords_regex'} = qr/ ( $conf->{'keywords_regex'} ) /x;
+
+my $date = DateTime->now->subtract(
+    'days' => 1
+);
+
+# Load GMail API config
+open( my $env, '<', '../.env' ) || die "Cannot find .env file in project root.";
+LINE: while ( my $line = <$env> ) {
+    next LINE unless ( $line =~ m/^(GMAIL[^=]+)=(.*)(?:[\n\r]*)/ );
+    $conf->{'env'}->{ $1 } = $2;
+}
+
+close $env;
+
+my $gmail = Mail::Webmail::Gmail->new(
+    username => $conf->{'env'}->{'GMAIL_USERNAME'},
+    password => $conf->{'env'}->{'GMAIL_PASSWORD'},
+    encrypt_session => 1,
+);
+
+my $messages = $gmail->get_messages( label => $Mail::Webmail::Gmail::FOLDERS{ 'INBOX' } );
+die "Cannot fetch emails: ". $gmail->error_msg();
+
+MESSAGE: foreach my $message ( @{ $messages } ) {
+    unless (
+        ( $message->{ 'new' } )
+        && ( $message->{'sender_email'} eq $conf->{'kumars_email'} )
+        && ( $message->{'body'} =~ m/$conf->{'keywords_regex'}/ )
+        && ( $message->{'body'} =~ m/$conf->{'database_regex'}/ )
+    ) {
+        print "Skipping mail from=[". $message->{'sender_email'}."] subject=[". $message->{'subject'} ."]\n";
+        next MESSAGE;
+    }
+    exit 1;
+
+    my $database = $1;
+    my $backup_file = $conf->{'backup_path'} . $database .'-'. $date->ymd() .'.gz';
+
+    unless ( -f $backup_file ) {
+        die 'Cannot find backup file=['. $backup_file ."]\n";
+    }
+
+    print 'Restoring database=['. $database .'] from day=['. $date->ymd() .'] from file=['. $backup_file ."]\n";
+
+    # Restore DB
+    system( 'gunzip -c '. $backup_file .' | psql '. $database );
+    die "Error while restoring the database=[". $database ."] from file=[". $backup_file ."]" if ( $? >> 8 );
+
+    # Mark as read, add label, reply
+    $gmail->edit_labels(
+        'label' => 'Database fixes',
+        'action' => 'add',
+        'msgid' => $message->{'id'}
+    );
+
+    $gmail->send_message(
+        'to' => $conf->{'kumars_email'},
+        'subject' => 'RE: '. $message->{'subject'},
+        'msgbody' => "No problem. I've fixed it. \n\n Please be careful next time.",
+    );
+
+    $gmail->edit_labels(
+        'label' => 'unread',
+        'action' => 'remove',
+        'msgid' => $message->{'id'}
+    );
+
+}
+