74 lines
2.8 KiB
Haskell
74 lines
2.8 KiB
Haskell
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import Database.HDBC
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import Database.HDBC.PostgreSQL
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import System.IO
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import Control.Exception
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import Data.Maybe (fromJust)
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import qualified Data.Text as T
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import qualified Data.ByteString.Char8 as B
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import System.FilePath as FP
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import Filesystem.Path.CurrentOS
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import Codec.Picture
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import Codec.Picture.ScaleDCT
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import qualified Codec.Picture.Metadata as PM
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main :: IO ()
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main = do
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putStrLn "Enter database host"
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dbHost <- getLine
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putStrLn "Enter database port"
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dbPort <- getLine
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putStrLn "Enter database user"
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dbUser <- getLine
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putStrLn "Enter database name"
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dbName <- getLine
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putStrLn "Enter database password"
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dbPasswd <- getPasswd
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let dbString = "host=" ++ dbHost ++ " port=" ++ dbPort ++ " user=" ++ dbUser ++ " dbname=" ++ dbName ++ " password=" ++ dbPasswd
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conn <- connectPostgreSQL dbString
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-- comment next two lines, if eidolon has been run after the update
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-- _ <- run conn "alter table medium add column preview varchar not null default 'fill_me!'" []
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-- _ <- run conn "alter table medium add column preview_width int8 not null default 0" []
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stmt1 <- prepare conn "select * from medium"
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_ <- execute stmt1 []
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rows <- fetchAllRowsAL stmt1
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-- mapM_ (putStrLn . show) rows
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tups <- mapM (\entry ->
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case entry of
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[("id", theId), _, ("path", SqlByteString path), _, _, _, ("owner", SqlInteger owner), _, _, _, _, ("album", SqlInteger album), _, _] -> do
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eimg <- readImageWithMetadata (tail $ B.unpack path)
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case eimg of
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Left e -> error e
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Right (orig, meta) -> do
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let newName = takeBaseName (B.unpack path) ++ "_preview.jpg"
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newPath = "static" FP.</> "data" FP.</> show owner FP.</> show album FP.</> newName
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origPix = convertRGBA8 orig
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oWidth = fromIntegral $ fromJust $ PM.lookup PM.Width meta :: Int
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oHeight = fromIntegral $ fromJust $ PM.lookup PM.Height meta :: Int
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pHeight = 600
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pScale = (fromIntegral pHeight :: Double) / (fromIntegral oHeight :: Double)
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pWidth = floor (fromIntegral oWidth * pScale)
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pPix = scale (pWidth, pHeight) origPix
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saveJpgImage 95 newPath $ ImageRGBA8 pPix
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return [SqlByteString (B.pack $ '/':newPath), SqlInteger (fromIntegral pWidth), theId]
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_ ->
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error "malformed entry"
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) rows
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stmt2 <- prepare conn "update medium set preview = ?, preview_width = ? where id = ?"
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executeMany stmt2 tups
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commit conn
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disconnect conn
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putStrLn "Migration successfull!!"
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getPasswd :: IO String
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getPasswd = do
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putStr "Password: "
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hFlush stdout
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pass <- withEcho False getLine
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putChar '\n'
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return pass
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withEcho :: Bool -> IO a -> IO a
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withEcho echo action = do
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old <- hGetEcho stdin
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bracket_ (hSetEcho stdin echo) (hSetEcho stdin old) action
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