eidolon/Handler/AdminMediumSettings.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.AdminMediumSettings where
import Import
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import Handler.Commons
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import System.FilePath
import System.Directory
import Data.List (tail)
import qualified Data.Text as T
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getAdminMediaR :: Handler Html
getAdminMediaR = do
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adminCheck <- loginIsAdmin
case adminCheck of
Right _ -> do
media <- runDB $ selectList [] [Asc MediumTitle]
defaultLayout $ do
setTitle "Administration: Media"
$(widgetFile "adminMedia")
Left (errorMsg, route) -> do
setMessage errorMsg
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redirect route
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getAdminMediumSettingsR :: MediumId -> Handler Html
getAdminMediumSettingsR mediumId = do
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adminCheck <- loginIsAdmin
case adminCheck of
Right _ -> do
tempMedium <- runDB $ get mediumId
case tempMedium of
Just medium -> do
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(adminMediumSetWidget, enctype) <- generateFormPost $
renderBootstrap3 BootstrapBasicForm $
adminMediumSetForm medium
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formLayout $ do
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setTitle "Administration: Medium Settings"
$(widgetFile "adminMediumSet")
Nothing -> do
setMessage "This medium does not exist"
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redirect AdminR
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Left (errorMsg, route) -> do
setMessage errorMsg
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redirect route
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postAdminMediumSettingsR :: MediumId -> Handler Html
postAdminMediumSettingsR mediumId = do
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adminCheck <- loginIsAdmin
case adminCheck of
Right _ -> do
tempMedium <- runDB $ get mediumId
case tempMedium of
Just medium -> do
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((res, _), _) <- runFormPost $
renderBootstrap3 BootstrapBasicForm $
adminMediumSetForm medium
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case res of
FormSuccess temp -> do
runDB $ update mediumId
[ MediumTitle =. mediumTitle temp
, MediumDescription =. mediumDescription temp
, MediumTags =. mediumTags temp
]
setMessage "Medium settings changed successfully"
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redirect AdminR
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_ -> do
setMessage "There was an error while changing the settings"
redirect $ AdminMediumSettingsR mediumId
Nothing -> do
setMessage "This medium does not exist"
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redirect AdminR
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Left (errorMsg, route) -> do
setMessage errorMsg
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redirect route
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adminMediumSetForm :: Medium -> AForm Handler Medium
adminMediumSetForm medium = Medium
<$> areq textField (bfs ("Title" :: T.Text)) (Just $ mediumTitle medium)
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<*> pure (mediumPath medium)
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<*> pure (mediumThumb medium)
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<*> pure (mediumMime medium)
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<*> pure (mediumTime medium)
<*> pure (mediumOwner medium)
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<*> aopt textareaField (bfs ("Description" :: T.Text)) (Just $ mediumDescription medium)
<*> areq tagField (bfs ("Tags" :: T.Text)) (Just $ mediumTags medium)
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<*> pure (mediumAlbum medium)
<*> pure (mediumPreview medium)
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<* bootstrapSubmit ("Change settings" :: BootstrapSubmit Text)
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getAdminMediumDeleteR :: MediumId -> Handler Html
getAdminMediumDeleteR mediumId = do
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adminCheck <- loginIsAdmin
case adminCheck of
Right _ -> do
tempMedium <- runDB $ get mediumId
case tempMedium of
Just medium -> do
-- remove reference from album
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let albumId = mediumAlbum medium
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album <- runDB $ getJust albumId
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let mediaList = albumContent album
let newMediaList = removeItem mediumId mediaList
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runDB $ update albumId [AlbumContent =. newMediaList]
-- delete comments
commEnts <- runDB $ selectList [CommentOrigin ==. mediumId] []
_ <- mapM (\ent -> do
children <- runDB $ selectList [CommentParent ==. (Just $ entityKey ent)] []
_ <- mapM (\child -> do
-- delete comment children
runDB $ delete $ entityKey child
) children
runDB $ delete $ entityKey ent) commEnts
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-- delete medium
runDB $ delete mediumId
-- delete files
liftIO $ removeFile (normalise $ tail $ mediumPath medium)
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liftIO $ removeFile (normalise $ tail $ mediumThumb medium)
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liftIO $ removeFile (normalise $ tail $ mediumPreview medium)
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-- outro
setMessage "Medium deleted successfully"
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redirect AdminR
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Nothing -> do
setMessage "This medium does not exist"
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redirect AdminR
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Left (errorMsg, route) -> do
setMessage errorMsg
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redirect route