X-Git-Url: https://ruin.nu/git/?a=blobdiff_plain;f=Wiki.hs;h=d6ece0dc5f4d94829dd09bfd86f657be3927f781;hb=a3c05f5d3f4be5f28a3eae7739f138a07fa263ad;hp=c41effa9d481e63e5c7b41aa1aa5569504475287;hpb=ab35c3fcc01e43f9aea657f4c1c35bd66de0aafb;p=yawbih.git

diff --git a/Wiki.hs b/Wiki.hs
index c41effa..d6ece0d 100644
--- a/Wiki.hs
+++ b/Wiki.hs
@@ -1,40 +1,82 @@
 module Wiki (
-	WB
+	Backend (getCurrent,getList,get,setCurrent,update)
 	,PGB
+	,createPGB
 
 ) where
 
 import Dbconnect
+import Data.Char
 
-class WB a where
+class Backend a where
 	--Keyword -> (Full text,date)
-	getCurrent :: a -> String -> IO (String,String)
+	getCurrent :: a -> String -> IO (Maybe (String,String))
 
-	--Keyword -> [(id,date)]
-	getList :: a -> String -> IO [(String, String)]
+	--Keyword -> [(id,date,author,comment)]
+	getList :: a -> String -> IO [(String, String, String, String)]
 
 	--Keyword -> id -> Full text
 	get :: a -> String -> String -> IO String
 
 	--Keyword -> id -> ()
-	setCurrent :: a -> String -> String -> IO ()
+	setCurrent :: a -> String -> String -> IO Bool
 
 	--Keyword -> Full text -> id
-	addNew :: a -> String -> String -> IO String
+	update :: a -> String -> String -> String -> String -> IO String
 
-data PGB = PGB DBService
+data Markup = Text String
+	| Bold String
+	| Paragraph [Markup]
 
-createPGP host database user password = let db = createDBService host database "" user password Nothing in return (PGB db)
+type Document = [Markup]
 
+newtype PGB = PGB DBService
 
-instance WB PGB where
+createPGB :: String -> String -> String -> String -> IO PGB
+createPGB host database user password = let db = createDBService host database "" user password Nothing in return (PGB db)
 
-	getCurrent (PGB db) key = return ("","")
 
-	getList (PGB db) key = return [("","")]
+testDB = createPGB "wave" "wiki" "wiki" "12wiki34db"
+
+instance Backend PGB where
+
+	getCurrent (PGB db) key = do 
+		result <- selectReturnTuples db $ "SELECT fulltext,timestamp FROM curtexts WHERE keyword="++tov key
+		case result of
+			[text,date]:_ -> return (Just (text,date))
+			_ -> return Nothing
+
+	getList (PGB db) key = do
+		list <- selectReturnTuples db $ "SELECT id, timestamp, author, comment from fulltexts WHERE keyword = "++tov key
+		return $ map (\[id,date,author,comment] -> (id,date,author,comment)) list
 
 	get (PGB db) key id = return ""
 
-	setCurrent (PGB db) key id = return ()
+	setCurrent (PGB db) key id = do
+		full <- selectReturnTuples db $ "SELECT keyword FROM fulltexts WHERE keyword="++tov key++" AND id='"++id++"'"
+		cur <- selectReturnTuples db $ "SELECT keyword FROM curtexts WHERE keyword="++tov key
+		case full of
+			[[]] -> do
+				return False
+			_  -> do
+				rows <- case cur of
+					[[]] -> do
+						execute db $ "INSERT INTO current (keyword, id) VALUES ("++tov key++","++tov id++")"
+					_  -> do
+						execute db $ "UPDATE current SET id = "++tov id++" WHERE keyword = "++tov key
+				if rows == 1 then return True
+					else return False 
+
+	update (PGB db) key text author comment = do
+		rows <- execute db $ "INSERT INTO fulltexts (keyword,fulltext, author, comment) VALUES ("++tov key++","++tov text++","++tov author++","++tov comment++")"
+		if rows == 0 then return ""
+			else do
+				[[id]] <- selectReturnTuples db $ "SELECT currval('fulltexts_id_seq')" 
+				setCurrent (PGB db) key id
+				return id
+			
+
+tov :: String -> String
+tov s = '\'':escapeQuery s++"'"
+		
 
-	addNew (PGB db) key text = return ""