eidolon/Handler/AlbumSettings.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.AlbumSettings where
import Import
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import qualified Data.Text as T
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import Data.Maybe
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import System.Directory
import System.FilePath
import qualified Data.List as L
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getAlbumSettingsR :: AlbumId -> Handler Html
getAlbumSettingsR albumId = do
tempAlbum <- runDB $ get albumId
case tempAlbum of
Just album -> do
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let ownerId = albumOwner album
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msu <- lookupSession "userId"
case msu of
Just tempUserId -> do
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let userId = getUserIdFromText tempUserId
let ownerPresence = userId == ownerId
let presence = userId `elem` (albumShares album)
case ownerPresence || presence of
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True -> do
entities <- runDB $ selectList [UserId !=. (albumOwner album)] [Desc UserName]
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let users = map (\u -> (userName $ entityVal u, entityKey u)) entities
(albumSettingsWidget, enctype) <- generateFormPost $ albumSettingsForm album albumId users
formLayout $ do
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setTitle "Eidolon :: Album Settings"
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$(widgetFile "albumSettings")
False -> do
setMessage "You must own this album to change its settings"
redirect $ AlbumR albumId
Nothing -> do
setMessage "You must be logged in to change settings"
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redirect LoginR
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Nothing -> do
setMessage "This album does not exist"
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redirect HomeR
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postAlbumSettingsR :: AlbumId -> Handler Html
postAlbumSettingsR albumId = do
tempAlbum <- runDB $ get albumId
case tempAlbum of
Just album -> do
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let ownerId = albumOwner album
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owner <- runDB $ getJust ownerId
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let ownerName = userName owner
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msu <- lookupSession "userId"
case msu of
Just tempUserId -> do
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let userId = getUserIdFromText tempUserId
let ownerPresence = userId == ownerId
let presence = userId `elem` albumShares album
if
ownerPresence || presence
then do
entities <- runDB $ selectList [UserId !=. (albumOwner album)] [Desc UserName]
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let users = map (\u -> (userName $ entityVal u, entityKey u)) entities
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((result, _), _) <- runFormPost $ albumSettingsForm album albumId users
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case result of
FormSuccess temp -> do
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let newShares = L.sort $ albumShares temp
let oldShares = L.sort $ albumShares album
_ <- if
newShares /= oldShares
then do
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link <- ($ AlbumR albumId) <$> getUrlRender
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let rcptIds = L.nub $ newShares L.\\ oldShares
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mapM (\uId -> do
-- update userAlbums
user <- runDB $ getJust uId
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let oldAlbs = userAlbums user
let newAlbs = albumId : oldAlbs
_ <- runDB $ update uId [UserAlbums =. newAlbs]
-- send notification
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let addr = userEmail user
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sendMail addr "A new album was shared with you" $
[shamlet|
<h1>Hello #{userSlug user}!
<p>#{ownerName} was so kind to share his album #{albumTitle album} with you.
<p>You can find it
<a href=#{link}>
here
.
|]
) rcptIds
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else do
return [()]
-- nothing to do here
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width <- getThumbWidth $ Just $ L.tail $ fromMaybe ['a'] $ albumSamplePic temp
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_ <- runDB $ update albumId
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[ AlbumTitle =. albumTitle temp
, AlbumShares =. newShares
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, AlbumSamplePic =. albumSamplePic temp
, AlbumSampleWidth =. width
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]
setMessage "Album settings changed succesfully"
redirect $ AlbumR albumId
_ -> do
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setMessage "There was an error while changing the settings"
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redirect $ AlbumSettingsR albumId
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else do
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setMessage "You must own this album to change its settings"
redirect $ AlbumR albumId
Nothing -> do
setMessage "You must be logged in to change settings"
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redirect LoginR
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Nothing -> do
setMessage "This album does not exist"
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redirect HomeR
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albumSettingsForm :: Album -> AlbumId -> [(Text, UserId)]-> Form Album
albumSettingsForm album albumId users = renderDivs $ Album
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<$> areq textField "Title" (Just $ albumTitle album)
<*> pure (albumOwner album)
<*> areq (userField users) "Share this album with" (Just $ albumShares album)
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<*> pure (albumContent album)
<*> aopt (selectField media) "Sample picture" (Just $ albumSamplePic album)
<*> pure 230
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where
media = do
entities <- runDB $ selectList [MediumAlbum ==. albumId] [Asc MediumTitle]
optionsPairs $ map (\med -> (mediumTitle $ entityVal med, mediumThumb (entityVal med))) entities
-- users = do
-- entities <- runDB $ selectList [UserId !=. (albumOwner album)] [Desc UserName]
-- return $ map (\u -> (userName $ entityVal u, entityKey u)) entities
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getAlbumDeleteR :: AlbumId -> Handler Html
getAlbumDeleteR albumId = do
tempAlbum <- runDB $ get albumId
case tempAlbum of
Just album -> do
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let ownerId = albumOwner album
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msu <- lookupSession "userId"
case msu of
Just tempUserId -> do
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let userId = getUserIdFromText tempUserId
if
userId == ownerId
then do
formLayout $ do
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setTitle $ toHtml ("Eidolon :: Delete album" `T.append` (albumTitle album))
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$(widgetFile "albumDelete")
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else do
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setMessage "You must own this album to delete it"
redirect $ AlbumR albumId
Nothing -> do
setMessage "You must be logged in to delete albums"
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redirect LoginR
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Nothing -> do
setMessage "This album does not exist"
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redirect HomeR
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postAlbumDeleteR :: AlbumId -> Handler Html
postAlbumDeleteR albumId = do
tempAlbum <- runDB $ get albumId
case tempAlbum of
Just album -> do
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let ownerId = albumOwner album
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owner <- runDB $ getJust ownerId
msu <- lookupSession "userId"
case msu of
Just tempUserId -> do
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let userId = getUserIdFromText tempUserId
if
userId == ownerId
then do
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confirm <- lookupPostParam "confirm"
case confirm of
Just "confirm" -> do
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-- remove album reference from user
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let albumList = userAlbums owner
let newAlbumList = removeItem albumId albumList
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runDB $ update ownerId [UserAlbums =. newAlbumList]
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-- delete album content and its comments
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_ <- mapM (\a -> do
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-- delete files
medium <- runDB $ getJust a
liftIO $ removeFile (normalise $ L.tail $ mediumPath medium)
liftIO $ removeFile (normalise $ L.tail $ mediumThumb medium)
-- delete comments
commEnts <- runDB $ selectList [CommentOrigin ==. a] []
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_ <- mapM (runDB . delete . entityKey) commEnts
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runDB $ delete a
) (albumContent album)
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-- delete album
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runDB $ delete albumId
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-- delete files
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liftIO $ removeDirectoryRecursive $ "static" </> "data" </> T.unpack (extractKey userId) </> T.unpack (extractKey albumId)
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-- outro
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setMessage "Album deleted succesfully"
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redirect HomeR
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_ -> do
setMessage "You must confirm the deletion"
redirect $ AlbumSettingsR albumId
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else do
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setMessage "You must own this album to delete it"
redirect $ AlbumR albumId
Nothing -> do
setMessage "You must be logged in to delete albums"
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redirect LoginR
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Nothing -> do
setMessage "This album does not exist"
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redirect HomeR