eidolon/Handler/Upload.hs

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-- eidolon -- A simple gallery in Haskell and Yesod
-- Copyright (C) 2015 Amedeo Molnár
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU Affero General Public License as published
-- by the Free Software Foundation, either version 3 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU Affero General Public License for more details.
--
-- You should have received a copy of the GNU Affero General Public License
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-- along with this program. If not, see <http://www.gnu.org/licenses/>.
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module Handler.Upload where
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import Import as I
import Yesod.Text.Markdown
import Text.Markdown
import Handler.Commons
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import Data.Time
import Data.Maybe
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import qualified Data.Text as T
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import Data.List as L
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import qualified System.FilePath as FP
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import System.Directory
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import Text.Blaze
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-- import Codec.ImageType
-- import Codec.Picture as P
-- import Codec.Picture.Metadata as PM
-- import Codec.Picture.ScaleDCT
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import Graphics.Rasterific.Svg as SVG
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-- import Graphics.Svg
-- import Graphics.Text.TrueType
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import Debug.Trace
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getDirectUploadR :: AlbumId -> Handler Html
getDirectUploadR albumId = do
tempAlbum <- runDB $ get albumId
case tempAlbum of -- does the requested album exist
Just album -> do
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let ownerId = albumOwner album
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musername <- maybeAuthId
case musername of -- is anybody logged in
Just username -> do
(Just (Entity userId user)) <- runDB $ getBy $ UniqueUser username
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if
userId == ownerId || userId `elem` albumShares album
-- is the owner present or a user with whom the album is shared
then do
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(dUploadWidget, enctype) <- generateFormPost $ renderBootstrap3 BootstrapBasicForm $ dUploadForm userId user albumId
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defaultLayout $ do
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setTitle $ toHtml ("Eidolon :: Upload medium to " `T.append` albumTitle album)
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$(widgetFile "dUpload")
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else do
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setMessage "You must own this album to upload"
redirect $ AlbumR albumId
Nothing -> do
setMessage "You must be logged in to upload"
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redirect $ AuthR LoginR
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Nothing -> do
setMessage "This album does not exist"
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redirect HomeR
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postDirectUploadR :: AlbumId -> Handler Html
postDirectUploadR albumId = do
tempAlbum <- runDB $ get albumId
case tempAlbum of -- does the album exist
Just album -> do
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let ownerId = albumOwner album
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musername <- maybeAuthId
case musername of -- is anybody logged in
Just username -> do
(Just (Entity userId user)) <- runDB $ getBy $ UniqueUser username
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if userId == ownerId || userId `elem` albumShares album
-- is the logged in user the owner or is the album shared with him
then do
((result, _), _) <- runFormPost $ renderBootstrap3 BootstrapBasicForm $ dUploadForm userId user albumId
case result of
FormSuccess temp -> do
onlyErrNames <- handleUploads temp
if L.null onlyErrNames
then do
setMessage "All images succesfully uploaded"
redirect $ AlbumR albumId
else do
let msg = toMarkup $
"File type not supported of: " `T.append`
(T.intercalate ", " onlyErrNames)
setMessage msg
redirect HomeR
_ -> do
setMessage "There was an error uploading the file"
redirect $ DirectUploadR albumId
else do -- owner is not present
setMessage "You must own this album to upload"
redirect $ AlbumR albumId
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Nothing -> do
setMessage "You must be logged in to upload"
redirect $ AlbumR albumId
Nothing -> do
setMessage "This Album does not exist"
redirect $ AlbumR albumId
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dUploadForm :: UserId -> User -> AlbumId -> AForm Handler FileBulk
dUploadForm userId user albumId = FileBulk
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<$> areq textField (bfs ("Title" :: T.Text)) Nothing
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<*> areq multiFileField "Select file(s)" Nothing
<*> lift (liftIO getCurrentTime)
<*> pure userId
<*> aopt markdownField (bfs ("Description" :: T.Text)) Nothing
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<*> areq tagField (bfs ("Enter tags" :: T.Text)) Nothing
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<*> pure albumId
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<*> areq (selectField licences) (bfs ("Licence" :: T.Text)) (defLicence)
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<* bootstrapSubmit ("Upload" :: BootstrapSubmit T.Text)
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where
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licences = optionsPairs $ I.map (\a -> (T.pack (show (toEnum a :: Licence)), a)) [-2..6]
defLicence = Just $ userDefaultLicence user
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data FileBulk = FileBulk
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{ fileBulkPrefix :: T.Text
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, fileBulkFiles :: [FileInfo]
, fileBulkTime :: UTCTime
, fileBulkOwner :: UserId
, fileBulkDesc :: Maybe Markdown
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, fileBulkTags :: [T.Text]
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, fileBulkAlbum :: AlbumId
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, fileBulkLicence :: Int
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}
getUploadR :: Handler Html
getUploadR = do
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musername <- maybeAuthId
case musername of
Just username -> do
(Just (Entity userId user)) <- runDB $ getBy $ UniqueUser username
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let albums = userAlbums user
if
I.null albums
then do
setMessage "Please create an album first"
redirect NewAlbumR
else do
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(uploadWidget, enctype) <- generateFormPost $ renderBootstrap3 BootstrapBasicForm $ bulkUploadForm userId user
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defaultLayout $ do
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setTitle "Eidolon :: Upload Medium"
$(widgetFile "bulkUpload")
Nothing -> do
setMessage "You need to be logged in"
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redirect $ AuthR LoginR
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bulkUploadForm :: UserId -> User -> AForm Handler FileBulk
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bulkUploadForm userId user = (\a b c d e f g h -> FileBulk b c d e f g a h)
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<$> areq (selectField albums) (bfs ("Album" :: T.Text)) Nothing
<*> areq textField (bfs ("Title" :: T.Text)) Nothing
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<*> areq multiFileField "Select file(s)" Nothing
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<*> lift (liftIO getCurrentTime)
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<*> pure userId
<*> aopt markdownField (bfs ("Description" :: T.Text)) Nothing
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<*> areq tagField (bfs ("Enter tags" :: T.Text)) Nothing
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<*> areq (selectField licences) (bfs ("Licence" :: T.Text)) (defLicence)
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<* bootstrapSubmit ("Upload" :: BootstrapSubmit T.Text)
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where
albums = do
allEnts <- runDB $ selectList [] [Desc AlbumTitle]
let entities = catMaybes $ map (\ent ->
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if
userId == albumOwner (entityVal ent) || userId `elem` albumShares (entityVal ent)
then Just ent
else Nothing
) allEnts
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optionsPairs $ I.map (\alb -> (albumTitle $ entityVal alb, entityKey alb)) entities
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licences = optionsPairs $ I.map (\a -> (T.pack (show (toEnum a :: Licence)), a)) [-2..6]
defLicence = Just $ userDefaultLicence user
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postUploadR :: Handler Html
postUploadR = do
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musername <- maybeAuthId
case musername of
Just username -> do
(Just (Entity userId user)) <- runDB $ getBy $ UniqueUser username
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((result, _), _) <- runFormPost $ renderBootstrap3 BootstrapBasicForm $ bulkUploadForm userId user
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case result of
FormSuccess temp -> do
onlyErrNames <- handleUploads temp
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if
L.null onlyErrNames
then do
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setMessage "All images succesfully uploaded"
redirect $ AlbumR $ fileBulkAlbum temp
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else do
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let msg = toMarkup $
"File type not supported of: "
`T.append` T.intercalate ", " onlyErrNames
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setMessage msg
redirect $ AlbumR $ fileBulkAlbum temp
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_ -> do
setMessage "There was an error uploading the file(s)"
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redirect UploadR
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Nothing -> do
setMessage "You need to be logged in"
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redirect $ AuthR LoginR
handleUploads :: FileBulk -> Handler [Text]
handleUploads temp = do
let fils = fileBulkFiles temp
indFils = zip [1..] fils
errNames <- mapM
(handleUpload
(length indFils)
(fileBulkAlbum temp)
(fileBulkPrefix temp)
(fileBulkTime temp)
(fileBulkOwner temp)
(fileBulkDesc temp)
(fileBulkTags temp)
(fileBulkLicence temp)
NewFile
)indFils
return $ catMaybes errNames