module Handler.Upload where import Import as I import Data.Time import Data.Text import System.FilePath data TempMedium = TempMedium { tempMediumTitle :: Text , tempMediumFile :: FileInfo , tempMediumTime :: UTCTime , tempMediumOwner :: UserId , tempMediumDesc :: Textarea , tempMediumTags :: [Text] , tempMediumAlbum :: AlbumId } getUploadR :: Handler Html getUploadR = do msu <- lookupSession "userId" case msu of Just tempUserId -> do userId <- lift $ pure $ getUserIdFromText tempUserId (uploadWidget, enctype) <- generateFormPost (uploadForm userId) defaultLayout $ do $(widgetFile "upload") Nothing -> do setMessage "You need to be logged in" redirect $ LoginR postUploadR :: Handler Html postUploadR = do msu <- lookupSession "userId" case msu of Just tempUserId -> do userId <- lift $ pure $ getUserIdFromText tempUserId ((result, uploadWidget), enctype) <- runFormPost (uploadForm userId) case result of FormSuccess temp -> do path <- writeOnDrive (tempMediumFile temp) userId (tempMediumAlbum temp) inAlbumId <- return $ tempMediumAlbum temp medium <- return $ Medium (tempMediumTitle temp) ('/' : path) (tempMediumTime temp) (tempMediumOwner temp) (tempMediumDesc temp) (tempMediumTags temp) inAlbumId mId <- runDB $ I.insert medium inAlbum <- runDB $ getJust inAlbumId newMediaList <- return $ mId : (albumContent inAlbum) runDB $ update inAlbumId [AlbumContent =. newMediaList] setMessage "Image succesfully uploaded" redirect $ HomeR _ -> do setMessage "There was an error uploading the file" redirect $ UploadR Nothing -> do setMessage "You need to be logged in" redirect $ LoginR getDirectUploadR :: AlbumId -> Handler Html getDirectUploadR albumId = do tempAlbum <- runDB $ get albumId case tempAlbum of -- does the requested album exist Just album -> do ownerId <- return $ albumOwner album owner <- runDB $ getJust ownerId ownerName <- return $ userName owner msu <- lookupSession "userId" case msu of -- is anybody logged in Just tempUserId -> do userId <- return $ getUserIdFromText tempUserId presence <- return (userId == ownerId) case presence of -- is the owner present True -> do (dUploadWidget, enctype) <- generateFormPost $ dUploadForm userId albumId defaultLayout $ do $(widgetFile "dUpload") False -> do setMessage "You must own this album to upload" redirect $ AlbumR albumId Nothing -> do setMessage "You must be logged in to upload" redirect $ LoginR Nothing -> do setMessage "This album does not exist" redirect $ HomeR postDirectUploadR :: AlbumId -> Handler Html postDirectUploadR albumId = do tempAlbum <- runDB $ get albumId case tempAlbum of -- does the album exist Just album -> do ownerId <- return $ albumOwner album owner <- runDB $ getJust ownerId ownerName <- return $ userName owner msu <- lookupSession "userId" case msu of -- is anybody logged in Just tempUserId -> do userId <- return $ getUserIdFromText tempUserId presence <- return (userId == ownerId) case presence of -- is the logged in user the owner True -> do ((result, dUploadWidget), enctype) <- runFormPost (dUploadForm userId albumId) case result of FormSuccess temp -> do path <- writeOnDrive (tempMediumFile temp) userId albumId medium <- return $ Medium (tempMediumTitle temp) ('/' : path) (tempMediumTime temp) (tempMediumOwner temp) (tempMediumDesc temp) (tempMediumTags temp) albumId mId <- runDB $ insert medium inAlbum <- runDB $ getJust albumId newMediaList <- return $ mId : (albumContent inAlbum) runDB $ update albumId [AlbumContent =. newMediaList] setMessage "Image successfully uploaded" redirect $ AlbumR albumId _ -> do setMessage "There was an error uploading the file" redirect $ DirectUploadR albumId False -> do -- owner is not present setMessage "You must own this album to upload" redirect $ AlbumR albumId Nothing -> do setMessage "You must be logged in to upload" redirect $ AlbumR albumId Nothing -> do setMessage "This Album does not exist" redirect $ AlbumR albumId writeOnDrive :: FileInfo -> UserId -> AlbumId -> Handler FilePath writeOnDrive file userId albumId = do filename <- return $ fileName file path <- return $ "static" "data" (unpack $ extractKey userId) (unpack $ extractKey albumId) (unpack filename) liftIO $ fileMove file path return path uploadForm :: UserId -> Form TempMedium uploadForm userId = renderDivs $ TempMedium <$> areq textField "Title" Nothing <*> areq fileField "Select file" Nothing <*> lift (liftIO getCurrentTime) <*> pure userId <*> areq textareaField "Description" Nothing <*> areq tagField "Enter tags" Nothing <*> areq (selectField albums) "Album" Nothing where -- albums :: GHandler App App (OptionList AlbumId) albums = do entities <- runDB $ selectList [AlbumOwner ==. userId] [Desc AlbumTitle] optionsPairs $ I.map (\alb -> (albumTitle $ entityVal alb, entityKey alb)) entities dUploadForm :: UserId -> AlbumId -> Form TempMedium dUploadForm userId albumId = renderDivs $ TempMedium <$> areq textField "Title" Nothing <*> areq fileField "Select file" Nothing <*> lift (liftIO getCurrentTime) <*> pure userId <*> areq textareaField "Description" Nothing <*> areq tagField "Enter tags" Nothing <*> pure albumId