eidolon/Handler/Upload.hs
2015-09-14 18:54:46 +02:00

263 lines
11 KiB
Haskell

-- 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
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
module Handler.Upload where
import Import as I
import Data.Time
import Data.Maybe
import qualified Data.Text as T
import Data.List as L
import qualified System.FilePath as FP
import Filesystem.Path.CurrentOS
import Graphics.ImageMagick.MagickWand
import Text.Blaze.Internal
getDirectUploadR :: AlbumId -> Handler Html
getDirectUploadR albumId = do
tempAlbum <- runDB $ get albumId
case tempAlbum of -- does the requested album exist
Just album -> do
let ownerId = albumOwner album
msu <- lookupSession "userId"
case msu of -- is anybody logged in
Just tempUserId -> do
let userId = getUserIdFromText tempUserId
if
userId == ownerId || userId `elem` albumShares album
-- is the owner present or a user with whom the album is shared
then do
(dUploadWidget, enctype) <- generateFormPost $ dUploadForm userId albumId
formLayout $ do
setTitle $ toHtml ("Eidolon :: Upload medium to " `T.append` albumTitle album)
$(widgetFile "dUpload")
else 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
let ownerId = albumOwner album
msu <- lookupSession "userId"
case msu of -- is anybody logged in
Just tempUserId -> do
let userId = getUserIdFromText tempUserId
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 (dUploadForm userId albumId)
case result of
FormSuccess temp -> do
let fils = fileBulkFiles temp
let indFils = zip [1..] fils
errNames <- mapM
(\(index, file) -> do
let mime = fileContentType file
if
mime `elem` acceptedTypes
then do
path <- writeOnDrive file ownerId albumId
(thumbPath, iWidth, tWidth) <- generateThumb path ownerId albumId
tempName <- if
length indFils == 1
then return $ fileBulkPrefix temp
else return (fileBulkPrefix temp `T.append` " " `T.append` T.pack (show (index :: Int)) `T.append` " of " `T.append` T.pack (show (length indFils)))
let medium = Medium tempName ('/' : path) ('/' : thumbPath) mime (fileBulkTime temp) (fileBulkOwner temp) (fileBulkDesc temp) (fileBulkTags temp) iWidth tWidth albumId
mId <- runDB $ I.insert medium
inALbum <- runDB $ getJust albumId
let newMediaList = mId : albumContent inALbum
runDB $ update albumId [AlbumContent =. newMediaList]
return Nothing
else
return $ Just $ fileName file
) indFils
let onlyErrNames = removeItem Nothing errNames
if
L.null onlyErrNames
then do
setMessage "All images succesfully uploaded"
redirect HomeR
else do
let justErrNames = map fromJust onlyErrNames
let msg = Content $ Text $ "File type not supported of: " `T.append` T.intercalate ", " justErrNames
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
Nothing -> do
setMessage "You must be logged in to upload"
redirect $ AlbumR albumId
Nothing -> do
setMessage "This Album does not exist"
redirect $ AlbumR albumId
generateThumb :: FP.FilePath -> UserId -> AlbumId -> Handler (FP.FilePath, Int, Int)
generateThumb path userId albumId = do
let newName = FP.takeBaseName path ++ "_thumb.jpg"
let newPath = "static" FP.</> "data" FP.</> T.unpack (extractKey userId) FP.</> T.unpack (extractKey albumId) FP.</> newName
(iWidth, tWidth) <- liftIO $ withMagickWandGenesis $ do
(_ , w) <- magickWand
readImage w (decodeString path)
w1 <- getImageWidth w
h1 <- getImageHeight w
let h2 = 230
let w2 = floor (fromIntegral w1 / fromIntegral h1 * fromIntegral h2 :: Double)
setImageAlphaChannel w deactivateAlphaChannel
setImageFormat w "jpeg"
resizeImage w w2 h2 lanczosFilter 1
setImageCompressionQuality w 95
writeImage w (Just (decodeString newPath))
return (w1, w2)
return (newPath, iWidth, tWidth)
writeOnDrive :: FileInfo -> UserId -> AlbumId -> Handler FP.FilePath
writeOnDrive fil userId albumId = do
--filen <- return $ fileName fil
album <- runDB $ getJust albumId
let filen = show $ length (albumContent album) + 1
let ext = FP.takeExtension $ T.unpack $ fileName fil
let path = "static" FP.</> "data" FP.</> T.unpack (extractKey userId) FP.</> T.unpack (extractKey albumId) FP.</> filen ++ ext
liftIO $ fileMove fil path
return path
dUploadForm :: UserId -> AlbumId -> Form FileBulk
dUploadForm userId albumId = renderDivs $ FileBulk
<$> areq textField "Title" Nothing
<*> areq multiFileField "Select file(s)" Nothing
<*> lift (liftIO getCurrentTime)
<*> pure userId
<*> aopt textareaField "Description" Nothing
<*> areq tagField "Enter tags" Nothing
<*> pure albumId
data FileBulk = FileBulk
{ fileBulkPrefix :: Text
, fileBulkFiles :: [FileInfo]
, fileBulkTime :: UTCTime
, fileBulkOwner :: UserId
, fileBulkDesc :: Maybe Textarea
, fileBulkTags :: [Text]
, fileBulkAlbum :: AlbumId
}
getUploadR :: Handler Html
getUploadR = do
msu <- lookupSession "userId"
case msu of
Just tempUserId -> do
let userId = getUserIdFromText tempUserId
user <- runDB $ getJust userId
let albums = userAlbums user
if
I.null albums
then do
(uploadWidget, enctype) <- generateFormPost (bulkUploadForm userId)
formLayout $ do
setTitle "Eidolon :: Upload Medium"
$(widgetFile "bulkUpload")
else do
setMessage "Please create an album first"
redirect NewAlbumR
Nothing -> do
setMessage "You need to be logged in"
redirect LoginR
bulkUploadForm :: UserId -> Form FileBulk
bulkUploadForm userId = renderDivs $ (\a b c d e f g -> FileBulk b c d e f g a)
<$> areq (selectField albums) "Album" Nothing
<*> areq textField "Title" Nothing
<*> areq multiFileField "Select file(s)" Nothing
<*> lift (liftIO getCurrentTime)
<*> pure userId
<*> aopt textareaField "Description" Nothing
<*> areq tagField "Enter tags" Nothing
where
albums = do
allEnts <- runDB $ selectList [] [Desc AlbumTitle]
let entities = map fromJust $ removeItem Nothing $ map (\ent ->
if
userId == albumOwner (entityVal ent) || userId `elem` albumShares (entityVal ent)
then Just ent
else Nothing
) allEnts
optionsPairs $ I.map (\alb -> (albumTitle $ entityVal alb, entityKey alb)) entities
postUploadR :: Handler Html
postUploadR = do
msu <- lookupSession "userId"
case msu of
Just tempUserId -> do
let userId = getUserIdFromText tempUserId
((result, _), _) <- runFormPost (bulkUploadForm userId)
case result of
FormSuccess temp -> do
let fils = fileBulkFiles temp
let indFils = zip [1..] fils
errNames <- mapM
(\(index, file) -> do
let mime = fileContentType file
if
mime `elem` acceptedTypes
then do
let inAlbumId = fileBulkAlbum temp
albRef <- runDB $ getJust inAlbumId
let ownerId = albumOwner albRef
path <- writeOnDrive file ownerId inAlbumId
(thumbPath, iWidth, tWidth) <- generateThumb path ownerId inAlbumId
tempName <- if
length indFils == 1
then return $ fileBulkPrefix temp
else return (fileBulkPrefix temp `T.append` " " `T.append` T.pack (show (index :: Int)) `T.append` " of " `T.append` T.pack (show (length indFils)))
let medium = Medium tempName ('/' : path) ('/' : thumbPath) mime (fileBulkTime temp) (fileBulkOwner temp) (fileBulkDesc temp) (fileBulkTags temp) iWidth tWidth inAlbumId
mId <- runDB $ I.insert medium
inALbum <- runDB $ getJust inAlbumId
let newMediaList = mId : albumContent inALbum
runDB $ update inAlbumId [AlbumContent =. newMediaList]
return Nothing
else
return $ Just $ fileName file
) indFils
let onlyErrNames = removeItem Nothing errNames
if
L.null onlyErrNames
then do
setMessage "All images succesfully uploaded"
redirect HomeR
else do
let justErrNames = map fromJust onlyErrNames
let msg = Content $ Text $ "File type not supported of: " `T.append` T.intercalate ", " justErrNames
setMessage msg
redirect HomeR
_ -> do
setMessage "There was an error uploading the file"
redirect UploadR
Nothing -> do
setMessage "You need to be logged in"
redirect LoginR