From b8b6d19d27ba5847ef9d93cd1d13f724a850b020 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Fri, 25 Sep 2015 18:07:13 +0200
Subject: added search for next free cart slot


diff --git a/README b/README
index e64f3e6..13b99f0 100644
--- a/README
+++ b/README
@@ -10,7 +10,7 @@ CART RANGES:
        0 --+----------+
            |   2000   |  System Macros
     2000 --+----------+
-           |   1000   |  Jingles
+           |   1000   |  Jingles (2 Carts each)
     3000 --+----------+
            |          |
            |   7000   |  <unused>
diff --git a/lib/RHRD/rddb.pm b/lib/RHRD/rddb.pm
index 6e83a5e..a052080 100755
--- a/lib/RHRD/rddb.pm
+++ b/lib/RHRD/rddb.pm
@@ -41,6 +41,7 @@ use constant {
   RHRD_SHOW_MACROS_GROUP => 'SHOWS',
   RHRD_ALLSHOWS_GROUP => 'ALL_SHOWS',
   RHRD_ALLMUSICPOOLS_GROUP => 'ALL_POOLS',
+  RHRD_ALLJINGLES_GROUP => 'ALL_JINGLE',
 };
 
 ###########################  connection handling  ###########################
@@ -107,6 +108,38 @@ sub get_cart_range
   return ($low_cart, $high_cart, $chunk_size);
 }
 
+sub get_next_free_slot
+{
+  my ($dbh, $groupname) = @_;
+
+  my ($group_low_cart, $group_high_cart, $group_chunksize) = get_cart_range($dbh, $groupname);
+
+  my $sql = qq{select NAME, DEFAULT_LOW_CART, DEFAULT_HIGH_CART from GROUPS where NAME != ? and DEFAULT_LOW_CART >= ? and DEFAULT_HIGH_CART <= ? order by DEFAULT_LOW_CART;};
+  my $sth = $dbh->prepare($sql)
+    or return (undef, 'ERROR', "Database Error: " . $dbh->errstr);
+
+  $sth->execute($groupname, $group_low_cart, $group_high_cart)
+    or return (undef, 'ERROR', "Database Error: " . $sth->errstr);
+
+  my ($low_cart, $high_cart) = ($group_low_cart, $group_low_cart + $group_chunksize - 1);
+  while(my ($slot_name, $slot_low_cart, $slot_high_cart) = $sth->fetchrow_array) {
+    my $slot_chunksize = $slot_high_cart - $slot_low_cart + 1;
+    # print " --> " . $slot_name . ": " . $slot_low_cart . " - " . $slot_high_cart . " (" . $slot_chunksize . ")\n";;
+    if($slot_chunksize != $group_chunksize) {
+      $sth->finish();
+      return (undef, 'ERROR', "show group " . $slot_name . " has wrong chunksize " . $slot_chunksize . " != " . $group_chunksize);
+    }
+
+    if($high_cart < $slot_low_cart) {
+      last; # found a hole...
+    }
+    ($low_cart, $high_cart) = ($slot_high_cart + 1, $slot_high_cart + $group_chunksize);
+  }
+  $sth->finish();
+
+  return ($low_cart, $high_cart);
+}
+
 ###########################  TOKEN handling  ###########################
 
 sub get_token
@@ -635,12 +668,38 @@ sub get_shows_cart_range
   return get_cart_range($dbh, RHRD_ALLSHOWS_GROUP)
 }
 
+sub get_shows_next_free_slot
+{
+  my ($dbh) = @_;
+  return get_next_free_slot($dbh, RHRD_ALLSHOWS_GROUP)
+}
+
 ###########################  MUSICPOOL handling  ###########################
 
-sub get_musicpool_cart_range
+sub get_musicpools_cart_range
 {
   my ($dbh) = @_;
   return get_cart_range($dbh, RHRD_ALLMUSICPOOLS_GROUP)
 }
 
+sub get_musicpools_next_free_slot
+{
+  my ($dbh) = @_;
+  return get_next_free_slot($dbh, RHRD_ALLMUSICPOOLS_GROUP)
+}
+
+###########################  JINGLES handling  ###########################
+
+sub get_jingles_cart_range
+{
+  my ($dbh) = @_;
+  return get_cart_range($dbh, RHRD_ALLJINGLES_GROUP)
+}
+
+sub get_jingles_next_free_slot
+{
+  my ($dbh) = @_;
+  return get_next_free_slot($dbh, RHRD_ALLJINGLES_GROUP)
+}
+
 #################################  END  ####################################
diff --git a/test/get-range b/test/get-range
index 13e5533..1d4e12e 100755
--- a/test/get-range
+++ b/test/get-range
@@ -34,14 +34,41 @@ if(defined $dbh) {
   } else {
     print "Range: " . $low_cart  . " - " . $high_cart . ", chunk size: " . $chunk_size . "\n";
   }
+  my ($slot_low_cart, $slot_high_cart, $err) = RHRD::rddb::get_shows_next_free_slot($dbh);
+  if(!$slot_low_cart) {
+    print "$slot_high_cart: $err\n";
+  } else {
+    print "  Next Free: " . $slot_low_cart  . " - " . $slot_high_cart . "\n";
+  }
 
   print "\nMusic Pools:\n";
-  ($low_cart, $high_cart, $chunk_size) = RHRD::rddb::get_musicpool_cart_range($dbh);
+  ($low_cart, $high_cart, $chunk_size) = RHRD::rddb::get_musicpools_cart_range($dbh);
   if(!$low_cart) {
     print "$high_cart: $chunk_size\n";
   } else {
     print "Range: " . $low_cart  . " - " . $high_cart . ", chunk size: " . $chunk_size . "\n";
   }
+  ($slot_low_cart, $slot_high_cart, $err) = RHRD::rddb::get_musicpools_next_free_slot($dbh);
+  if(!$slot_low_cart) {
+    print "$slot_high_cart: $err\n";
+  } else {
+    print "  Next Free: " . $slot_low_cart  . " - " . $slot_high_cart . "\n";
+  }
+
+  print "\nJingles:\n";
+  ($low_cart, $high_cart, $chunk_size) = RHRD::rddb::get_jingles_cart_range($dbh);
+  if(!$low_cart) {
+    print "$high_cart: $chunk_size\n";
+  } else {
+    print "Range: " . $low_cart  . " - " . $high_cart . ", chunk size: " . $chunk_size . "\n";
+  }
+  ($slot_low_cart, $slot_high_cart, $err) = RHRD::rddb::get_jingles_next_free_slot($dbh);
+  if(!$slot_low_cart) {
+    print "$slot_high_cart: $err\n";
+  } else {
+    print "  Next Free: " . $slot_low_cart  . " - " . $slot_high_cart . "\n";
+  }
+
 
   RHRD::rddb::closedb($dbh);
 } else {
-- 
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