X-Git-Url: https://ruin.nu/git/?a=blobdiff_plain;f=Wiki.hs;h=bcfd23694a025b65363372dbb3f4f1ac0fa48978;hb=80f11c089c02ef7a3f13404121715ca0f4d4d281;hp=916829e11a872db3fd7b99d37fb5e68954bf844e;hpb=0bf2b690d5e8399175531005f9ca03df947cf878;p=yawbih.git

diff --git a/Wiki.hs b/Wiki.hs
index 916829e..bcfd236 100644
--- a/Wiki.hs
+++ b/Wiki.hs
@@ -1,21 +1,79 @@
 module Wiki (
+	Backend
+	,PGB
 
 ) where
 
-import Graphics.UI.WXCore.Db
+import Dbconnect
+import Data.Char
 
-{-Keyword -> Full text
-getCurrent :: String -> IO String
+class Backend a where
+	--Keyword -> (Full text,date)
+	getCurrent :: a -> String -> IO (Maybe (String,String))
 
---Keyword -> (id,date)
-getList :: String -> IO (Int, String)
+	--Keyword -> [(id,date)]
+	getList :: a -> String -> IO [(String, String, String, String)]
 
---Keyword -> id -> Full Text
-get :: String -> Int -> IO String
+	--Keyword -> id -> Full text
+	get :: a -> String -> String -> IO String
 
---Keyword -> id -> ()
-setCurrent :: String -> Int -> IO ()
+	--Keyword -> id -> ()
+	setCurrent :: a -> String -> String -> IO Bool
+
+	--Keyword -> Full text -> id
+	update :: a -> String -> String -> String -> String -> IO String
+
+newtype PGB = PGB DBService
+
+createPGB :: String -> String -> String -> String -> IO PGB
+createPGB host database user password = let db = createDBService host database "" user password Nothing in return (PGB db)
+
+
+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 = 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
+				print "No text found with this id and key"
+				return False
+			_  -> do
+				rows <- case cur of
+					[] -> do
+						print "No link found in current, inserting"
+						execute db $ "INSERT INTO current (keyword, id) VALUES ("++tov id++","++tov key++")"
+					_  -> do
+						print "Link found in current, updating"
+						execute db $ "UPDATE current SET id = "++tov id++" WHERE keyword = "++tov key
+				print rows
+				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++"'"
+		
 
---Keyword -> Full text -> id
-addNew :: String -> String -> IO Int
--}