From f093e02546f1752f2c9fea5581aa20d0e8bfb848 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Fri, 6 Jan 2017 00:57:47 +0100
Subject: fetching title of show carts works now as well


diff --git a/src/rddb.lua b/src/rddb.lua
index 0827f62..5bf9db2 100644
--- a/src/rddb.lua
+++ b/src/rddb.lua
@@ -51,6 +51,7 @@ function rddb:getCartInfo(cartnum)
    end
 
    if cur:numrows() ~= 1 then
+      cur:close()
       return nil, "nothing found in rivendell db"
    end
 
@@ -101,13 +102,77 @@ function rddb:getGroupNameAndCartType(cartnum)
    return carttype, groupname, groupdesc
 end
 
+local getShowType = function(params)
+   local n = 0
+   for p in string.gmatch(params, "([^;]+)") do
+      if n == 5 then
+         return p
+      end
+      n = n + 1
+   end
+   return "n"
+end
+
+local getShowLog = function(macros)
+   local log = string.match(macros, "^LL 1 ([^ ]+) 0!$")
+   if log == nil then
+      return nil, "invalid show macro"
+   end
+   log = string.gsub(log, "-", "_") .. "_LOG"
+   if string.match(log, "^[_0-9a-zA-Z-]+$") == nil then
+      return nil, "invalid show log-name: " .. log
+   end
+   return log
+end
+
+function rddb:__showHasCart(showlog, cartnum)
+   local cur, err = self.con:execute("select CART_NUMBER from " .. showlog .. " where CART_NUMBER = " .. tonumber(cartnum))
+   if cur == nil then
+      return nil, err
+   end
+   local nresults = cur:numrows()
+   cur:close()
+
+   return nresults > 0
+end
+
+function rddb:__getShowNameForShowCart(cartnum, groupname)
+   local cur, err = self.con:execute("select CART.TITLE,CART.MACROS,DROPBOXES.SET_USER_DEFINED as PARAMS from CART,DROPBOXES where CART.NUMBER = DROPBOXES.TO_CART and DROPBOXES.GROUP_NAME = '" .. self.con:escape(groupname) .. "'")
+   if cur == nil then
+      return nil, err
+   end
+
+   while true do
+      local data = {}
+      data = cur:fetch(data, "a")
+      if data == nil then break end
+
+      local showtype = getShowType(data.PARAMS)
+      if showtype == "r" then
+         data.TITLE = data.TITLE .. " (Wiederholung)"
+      elseif showtype == "s" then
+         data.TITLE = data.TITLE .. " (Sondersendung)"
+      end
+
+      local log = getShowLog(data.MACROS)
+
+      if self:__showHasCart(log, cartnum) then
+         cur:close()
+         return data.TITLE, "show"
+      end
+   end
+   cur:close()
+
+   return nil, "can't find any show for cart: " .. cartnum
+end
+
 function rddb:getCartShowName(cartnum)
    local carttype, groupname, groupdesc = self:getGroupNameAndCartType(cartnum)
    if carttype == nil then
       return nil, groupname
    end
    if carttype == "show" then
-      return nil, "show carts not yet supported"
+      return rddb:__getShowNameForShowCart(cartnum, groupname)
    end
    return groupdesc, carttype
 end
-- 
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