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Diffstat (limited to '')
| -rw-r--r-- | Hsbot/Plugin/Quote.hs | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/Hsbot/Plugin/Quote.hs b/Hsbot/Plugin/Quote.hs new file mode 100644 index 0000000..92a4b13 --- /dev/null +++ b/Hsbot/Plugin/Quote.hs @@ -0,0 +1,149 @@ +{-# LANGUAGE TypeFamilies, DeriveDataTypeable, TemplateHaskell #-} +-- | This module is an IRC plugin that manages quotes for posterity and legend +module Hsbot.Plugin.Quote +-- ( quote +-- , theQuote + () where + +import Control.Monad.Reader +import Control.Monad.State +import Data.Acid +import Data.SafeCopy +import Data.Time +import Data.Time.Clock.POSIX +import Data.Typeable +import System.Random +import qualified Data.Map as M +import qualified Network.IRC as IRC +import System.Environment.XDG.BaseDir + +import Hsbot.Message +import Hsbot.Types + +-- | A quote element +data QuoteElt = QuoteElt + { eltQuotee :: IRC.UserName + , eltQuote :: String + } deriving (Show, Typeable) + +type QuoteID = Int + +-- | A quote object +data Quote = Quote + { quoter :: IRC.UserName + , quotE :: [QuoteElt] + , quoteTime :: UTCTime + , votes :: Int + , voters :: M.Map IRC.UserName QuoteID + } deriving (Show, Typeable) + +emptyQuote :: Quote +emptyQuote = Quote { quoter = "" + , quotE = [] + , quoteTime = posixSecondsToUTCTime 0 + , votes = 0 + , voters = M.empty } + +-- The Quote database +data QuoteDB = QuoteDB + { nextQuoteId :: QuoteID + , quoteBotDB :: M.Map QuoteID Quote + , lockedQuotes :: M.Map QuoteID (IRC.UserName, UTCTime) + , lastActive :: M.Map IRC.Channel (QuoteID, UTCTime) + } deriving (Show, Typeable) + +emptyQuoteDB :: QuoteDB +emptyQuoteDB = QuoteDB { nextQuoteId = 0 + , quoteBotDB = M.empty + , lockedQuotes = M.empty + , lastActive = M.empty } + +$(deriveSafeCopy 0 'base ''QuoteElt) +$(deriveSafeCopy 0 'base ''Quote) +$(deriveSafeCopy 0 'base ''QuoteDB) + +-- | Quote database transactions +getQuote :: QuoteID -> Query QuoteDB (Maybe Quote) +getQuote quoteId = asks quoteBotDB >>= return . M.lookup quoteId + +getQuoteDB :: Query QuoteDB (M.Map QuoteID Quote) +getQuoteDB = asks quoteBotDB + +-- TODO : a function for cleaning locks + +isQuoteLockedFor :: QuoteID -> IRC.UserName -> UTCTime -> Query QuoteDB (Either String Bool) +isQuoteLockedFor quoteId requestor now = do + theQuote <- asks quoteBotDB >>= return . M.lookup quoteId + case theQuote of + Just quote -> do + currentLock <- asks lockedQuotes >>= return . M.lookup quoteId + case currentLock of + Just (owner, lockStamp) -> + if owner == requestor + then return $ Right True + else return . Right $ (addUTCTime 300 lockStamp > now) -- Is the entry older than 5 min? + Nothing -> return $ Right True + Nothing -> return $ Left "QuoteId not found" + +lockQuoteIdFor :: QuoteID -> IRC.UserName -> UTCTime -> Update QuoteDB () +lockQuoteIdFor quoteId requestor now = get >>= \db -> put db { lockedQuotes = M.insert quoteId (requestor, now) (lockedQuotes db) } + +$(makeAcidic ''QuoteDB ['getQuote, 'getQuoteDB, 'isQuoteLockedFor, 'lockQuoteIdFor]) + +-- | gets a random quote from the database +getRandomQuote :: AcidState QuoteDB -> IO (Maybe Quote) +getRandomQuote quoteDB = do + db <- query' quoteDB GetQuoteDB + if M.size db > 0 + then getStdRandom (randomR (0, M.size db - 1)) >>= \rInt -> return . Just . snd $ M.elemAt rInt db + else return Nothing + +-- | The duck plugin identity +quote :: PluginId +quote = PluginId + { pluginName = "quote" + , pluginEp = theQuote } + +-- | An IRC plugin that generates and kills ducks +theQuote :: Plugin (Env IO) () -- TODO : an argument for the history size +theQuote = do + baseDir <- liftIO $ System.Environment.XDG.BaseDir.getUserDataDir "hsbot" + quoteDB <- liftIO $ openAcidStateFrom (baseDir ++ "/quoteDB/") emptyQuoteDB + forever $ readMsg >>= eval quoteDB + where + eval :: AcidState QuoteDB -> Message -> Plugin (Env IO) () + eval quoteDB (IncomingMsg msg) + | IRC.msg_command msg == "PRIVMSG" = do + cmdArgs <- lift $ getCommand msg + case cmdArgs of + "quote":"help":"append":_ -> answerMsg msg "quote append QUOTEID QUOTEE QUOTE" + "quote":"help":"delete":_ -> do + answerMsg msg "quote delete QUOTEID [ELTID] :" + answerMsg msg $ concat [ " If an ELTID is provided, deletes the ELTID's line (starting from zero) " + , "in the quote QUOTEID. If not the whole quote is deleted." ] + "quote":"help":"quick":_ -> do + answerMsg msg "quote [quick] QUOTEE [QUOTE] :" + answerMsg msg $ concat [ " Begins a quote for QUOTEE. You must provide the keywork quick if the " + , "QUOTEE's nickname is a reserved word for this quote module. If no QUOTE is " + , "provided this module lookup it's conversation history and records the " + , "last sentence of QUOTEE." ] + "quote":"help":"show":_ -> answerMsg msg "quote show { QUOTEID | random [MIN_SCORE] }" + "quote":"help":"stat":_ -> do + answerMsg msg "quote stat" + answerMsg msg " Compute statistics about the quote database : Most quoters, most quoted " + "quote":"help":[] -> do + answerMsg msg $ concat [ "Usage: quote { [quick] QUOTEE [QUOTE] | append QUOTEID QUOTEE QUOTE | " + , "delete QUOTEID [ELTID] | show { QUOTEID | random [MIN_SCORE] } | stat }" ] + "quote":"help":_ -> answerMsg msg "Invalid help topic." + "quote":_ -> answerMsg msg "Invalid quote command." + "vote":"help":"quick":_ -> do + answerMsg msg "vote [quick] [QUOTEID] { +1 | -1 | ++ | -- }" + answerMsg msg $ concat [ " Vote for a quote. You can also vote for the last active quote on this chan " + , "by typing something that begins by +1, -1 or ++ or --." ] + "vote":"help":[] -> answerMsg msg "Usage: vote { [quick] [QUOTEID] { +1 | -1 } | show [QUOTEID] | stat }" + "vote":"help":_ -> answerMsg msg "Invalid help topic." + "vote":_ -> answerMsg msg "Invalid vote command." + _ -> return () + | otherwise = return () + eval _ _ = return () + |