--
--  rhnop
--
--  Copyright (C) 2011 Christian Pointner <equinox@helsinki.at>
--
--  This file is part of rhnop.
--
--  rhnop is free software: you can redistribute it and/or modify
--  it under the terms of the GNU General Public License as published by
--  the Free Software Foundation, either version 3 of the License, or
--  any later version.
--
--  rhnop is distributed in the hope that it will be useful,
--  but WITHOUT ANY WARRANTY; without even the implied warranty of
--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--  GNU General Public License for more details.
--
--  You should have received a copy of the GNU General Public License
--  along with rhnop. If not, see <http://www.gnu.org/licenses/>.
--

require "luasql.sqlite3"

local tempstorage = {}

function tempstorage:init()
   local err

   self.env, err = luasql.sqlite3()
   if self.env == nil then
      return nil, err
   end

   self.con, err = self.env:connect("nopsync.db")
   if self.con == nil then
      return nil, err
   end
   
   local ret, err = self.con:setautocommit(true)
   if ret == nil then
      return nil, err
   end

   local rows, err = self.con:execute("CREATE TABLE IF NOT EXISTS now (timestamp INT PRIMARY KEY ASC NOT NULL, cart INT NOT NULL, len INT, showtitle VARCHAR(255), title VARCHAR(255), artist VARCHAR(255), album VARCHAR(255), ismusic BOOLEAN)")
   if rows == nil then
      return nil, err
   end

   return true
end

function tempstorage:getLastCart()
   local cur, err = self.con:execute("SELECT cart from (SELECT cart,timestamp,MAX(timestamp) AS tsmax FROM now) where timestamp = tsmax")
   if cur == nil then
      return nil, err
   end

   local cart = cur:fetch()
   if cart == nil then cart = 0 end
   return cart
end

function tempstorage:insertMusic(timestamp, cart, len, title, artist, album)
   cart = tonumber(cart)
   if cart < 400000 or cart > 450000 then
      poolnum = 0
   else
      poolnum = math.floor(cart/1000) - 399
   end
   -- TODO escape "' in strings"
   local cur, err = self.con:execute("INSERT into now VALUES(" .. timestamp .. ", " .. cart .. ", " .. len .. ", 'Musikpool " .. poolnum .. "', '" .. title .. "', '" .. artist .."', '" .. album .. "', 1)")
   if cur == nil then
      return nil, err
   end

   return true
end

function tempstorage:close()
   if self.con then
      self.con:close()
   end

   if self.env then
      self.env:close()
   end
end

return tempstorage