Insert the visibility information

- It's still not actually used anywhere

ebook-manager.cabal

@@ -1,3 +1,6 @@
+-- Initial ebook-manager.cabal generated by cabal init.  For further
+-- documentation, see http://haskell.org/cabal/users-guide/
+
 name:                ebook-manager
 version:             0.1.0.0
 -- synopsis:

src/API/Catalogue.hs

@@ -96,34 +96,15 @@ instance ToNode (Catalog 1) where
 
 class Monad m => VersionedCatalog m (v :: Nat) where
   getChannels :: SafeUser -> m (Catalog v)
-  getBooks :: Channel.ChannelID -> SafeUser -> m (Catalog v)
 
 instance VersionedCatalog AppM 1 where
-  getChannels = getChannelsV1
-  getBooks = getBooksV1
-
-relUrl :: Link -> Rel
-relUrl x = Rel ("/api/current/" <> (pack . uriPath . linkURI $ x))
-
-getBooksV1 :: Channel.ChannelID -> SafeUser -> AppM (Catalog 1)
-getBooksV1 identifier SafeUser{} = do
+  getChannels SafeUser{username} = do
     updated <- liftIO getCurrentTime
-  let self = relUrl selfUrl
-      start = relUrl startUrl
-      selfUrl = safeLink (Proxy @(BaseAPI 1)) (Proxy @(ChannelCatalog 1)) identifier
-      startUrl = safeLink (Proxy @(BaseAPI 1)) (Proxy @(RootCatalog 1))
-      entries = mempty
-      pagination = Pagination Nothing Nothing
-  pure CatalogV1{..}
-
-getChannelsV1 :: SafeUser -> AppM (Catalog 1)
-getChannelsV1 SafeUser{username} = do
-  updated <- liftIO getCurrentTime
-  let self = relUrl selfUrl
+    let self = Rel ("/api/current/" <> selfUrl)
         -- I'm not sure if this safe link approach is really useable with this
         -- api hierarchy since I can't access the topmost api from here. Also
         -- authentication would bring a little bit of extra effort as well
-      selfUrl = safeLink (Proxy @(BaseAPI 1)) (Proxy @(RootCatalog 1))
+        selfUrl = pack . uriPath . linkURI $ safeLink (Proxy @(BaseAPI 1)) (Proxy @(RootCatalog 1))
         start = self
         pagination = Pagination Nothing Nothing
     entries <- map (fromChannel updated) <$> runDB (Channel.userChannels username)
@@ -131,16 +112,14 @@ getChannelsV1 SafeUser{username} = do
     where
       fromChannel :: UTCTime -> Channel.Channel -> Entry 1
       fromChannel updated Channel.Channel{..} =
-      let url = safeLink (Proxy @(BaseAPI 1)) (Proxy @(ChannelCatalog 1)) identifier
-          self = relUrl url
+        let url = pack . uriPath . linkURI $ safeLink (Proxy @(BaseAPI 1)) (Proxy @(ChannelCatalog 1)) identifier
+            self = Rel ("/api/current/" <> url)
         in EntryV1 channel channel updated channel (Left $ SubSection self)
 
 type VersionedAPI (v :: Nat) = Auth '[SA.BasicAuth, SA.JWT] SafeUser :> BaseAPI v
 
-type CatalogContent = '[XML, OPDS]
-
-type RootCatalog (v :: Nat) = "catalog" :> Get CatalogContent (Catalog v)
-type ChannelCatalog (v :: Nat) = "catalog" :> "channel" :> Capture "channel_id" Channel.ChannelID :> Get CatalogContent (Catalog v)
+type RootCatalog (v :: Nat) = "catalog" :> Get '[XML] (Catalog v)
+type ChannelCatalog (v :: Nat) = "catalog" :> "channel" :> Capture "channel_id" Channel.ChannelID :> Get '[XML] (Catalog v)
 type BaseAPI (v :: Nat) = RootCatalog v
                     :<|> ChannelCatalog v
 
@@ -148,8 +127,6 @@ handler :: forall v. VersionedCatalog AppM v => ServerT (VersionedAPI v) AppM
 handler auth = catalogRoot :<|> catalogChannels
   where
     catalogChannels :: Channel.ChannelID -> AppM (Catalog v)
-    -- Channel specific catalog returns tags inside the catalog
-    catalogChannels identifier = flip requireLoggedIn auth (getBooks identifier)
+    catalogChannels _ = throwM err403{errBody="Not implemented"}
     catalogRoot :: AppM (Catalog v)
-    -- catalog root returns channels
     catalogRoot = flip requireLoggedIn auth getChannels

src/API/Channels.hs

@@ -11,8 +11,6 @@
 {-# Language FlexibleInstances #-}
 {-# Language TypeApplications #-}
 {-# Language DataKinds #-}
-{-# Language DuplicateRecordFields #-}
-{-# Language NamedFieldPuns #-}
 module API.Channels (API, handler, JsonChannel(..)) where
 
 import Servant
@@ -30,34 +28,17 @@ import Data.Generics.Product
 data JsonChannel = JsonChannel { channel :: Text
                                , visibility :: Visibility }
                  deriving (Show, Generic)
-data UpdateChannel = UpdateChannel { identifier :: ChannelID
-                                   , channel :: Text
-                                   , visibility :: Visibility }
-                 deriving (Show, Generic)
 
 instance ToJSON JsonChannel
 instance FromJSON JsonChannel
-instance ToJSON UpdateChannel
-instance FromJSON UpdateChannel
 
 type API = Auth '[SA.BasicAuth, SA.Cookie, SA.JWT] SafeUser :> BaseAPI
 
-type BaseAPI = "channels" :> ReqBody '[JSON] JsonChannel :> Post '[JSON] UpdateChannel
-          :<|> "channels" :> Capture "channel_id" ChannelID :> ReqBody '[JSON] UpdateChannel :> Put '[JSON] UpdateChannel
+type BaseAPI = "channels" :> ReqBody '[JSON] JsonChannel :> Post '[JSON] JsonChannel
           :<|> "channels" :> Get '[JSON] [JsonChannel]
 
 handler :: ServerT API AppM
-handler user = newChannelHandler user :<|> updateChannelHandler user :<|> listChannelsHandler user
-
-requireChannelOwner :: AuthResult SafeUser -> ChannelID -> (SafeUser -> AppM a) -> AppM a
-requireChannelOwner auth channelId f = flip requireLoggedIn auth $ \u@SafeUser{username} -> do
-  unlessM (runDB . channelExists $ channelId) $ throwM err404
-  runDB (isChannelOwner channelId username) >>= \o -> if o then f u else throwM err403
-
-updateChannelHandler :: AuthResult SafeUser -> ChannelID -> UpdateChannel -> AppM UpdateChannel
-updateChannelHandler auth channelId UpdateChannel{visibility} = requireChannelOwner auth channelId $ \_ -> do
-  mChannel <- fmap toChannel <$> runDB (updateChannelPrivacy channelId visibility)
-  maybe (throwM err403) return mChannel
+handler user = newChannelHandler user :<|> listChannelsHandler user
 
 listChannelsHandler :: AuthResult SafeUser -> AppM [JsonChannel]
 listChannelsHandler = requireLoggedIn $ \user ->
@@ -65,11 +46,8 @@ listChannelsHandler = requireLoggedIn $ \user ->
   -- use the 'channel' accessor somehow or export it
   fmap (\Channel{..} -> JsonChannel{..}) <$> runDB (userChannels (view (field @"username") user))
 
-newChannelHandler :: AuthResult SafeUser -> JsonChannel -> AppM UpdateChannel
-newChannelHandler auth JsonChannel{..} = flip requireLoggedIn auth $ \user -> do
+newChannelHandler :: AuthResult SafeUser -> JsonChannel -> AppM JsonChannel
+newChannelHandler auth ch@JsonChannel{..} = flip requireLoggedIn auth $ \user -> do
   $logInfo $ "Creating channel for user " <> pack (show user)
-  mChannel <- fmap toChannel <$> runDB (insertChannel (view (field @"username") user) channel visibility)
-  maybe (throwM err403{errBody="Could not create the channel"}) return mChannel
-
-toChannel :: Channel -> UpdateChannel
-toChannel Channel{..} = UpdateChannel{..}
+  runDB (insertChannel (view (field @"username") user) channel visibility)
+  return ch

src/Database/Channel.hs

@@ -4,15 +4,12 @@
 module Database.Channel
   ( userChannels
   , insertChannel
-  , channelExists
-  , isChannelOwner
-  , updateChannelPrivacy
   , attachChannel
   , Visibility(..)
   , clearChannels
   , booksChannels
   , Channel(..)
-  , ChannelID(..) )
+  , ChannelID )
   where
 
 import ClassyPrelude
@@ -21,30 +18,6 @@ import Database
 import Database.Selda
 import Database.Selda.Generic
 
-import Control.Monad.Trans.Maybe
-
-getChannel :: (MonadSelda m, MonadMask m, MonadIO m) => ChannelID -> m (Maybe Channel)
-getChannel identifier = listToMaybe . fromRels <$> query q
-  where
-    q = do
-      ch@(channelId :*: _) <- select (gen channels)
-      restrict (channelId .== literal identifier)
-      return ch
-
-channelExists :: (MonadSelda m, MonadMask m, MonadIO m) => ChannelID -> m Bool
-channelExists identifier = not . null <$> getChannel identifier
-
-isChannelOwner :: (MonadSelda m, MonadIO m, MonadMask m) => ChannelID -> Username -> m Bool
-isChannelOwner identifier username = not . null <$> query q
-  where
-    q = do
-      userId :*: _ :*: username' :*: _ <- select (gen users)
-      channelId :*: _ :*: channelOwner :*: _ <- select (gen channels)
-      restrict (userId .== channelOwner)
-      restrict (username' .== literal username)
-      restrict (channelId .== literal identifier)
-      return channelId
-
 userChannels :: (MonadMask m, MonadIO m) => Username -> SeldaT m [Channel]
 userChannels username = fromRels <$> query q
   where
@@ -55,25 +28,12 @@ userChannels username = fromRels <$> query q
       restrict (username' .== literal username)
       return channel
 
-updateChannelPrivacy :: (MonadMask m, MonadIO m, MonadSelda m) => ChannelID -> Visibility -> m (Maybe Channel)
-updateChannelPrivacy channelId visibility = do
-  void $ update (gen channels) predicate (\channel -> channel `with` [pVis := literal visibility])
-  getChannel channelId
+insertChannel :: (MonadMask m, MonadIO m) => Username -> Text -> Visibility -> SeldaT m ()
+insertChannel username channel visibility = do
+  mUserId <- listToMaybe <$> getUser
+  void $ forM mUserId $ \userId ->
+    insertUnless (gen channels) (doesNotExist userId) [ def :*: channel :*: userId :*: visibility ]
   where
-    predicate (channelId' :*: _) = channelId' .== literal channelId
-    _ :*: _ :*: _ :*: pVis = selectors (gen channels)
-
-insertChannel :: (MonadMask m, MonadIO m, MonadSelda m) => Username -> Text -> Visibility -> m (Maybe Channel)
-insertChannel username channel visibility = runMaybeT $ do
-  userId <- MaybeT (listToMaybe <$> getUser)
-  channelId <- toChannelId <$> MaybeT (insertUnless (gen channels) (doesNotExist userId) [ def :*: channel :*: userId :*: visibility ])
-  MaybeT (listToMaybe . fromRels <$> query (q channelId))
-  where
-    q channelId = do
-      ch@(channelId' :*: _) <- select (gen channels)
-      restrict (channelId' .== literal channelId)
-      return ch
-    toChannelId = ChannelID . fromRowId
     doesNotExist userId (_ :*: channel' :*: userId' :*: _) = channel' .== literal channel .&& userId' .== literal userId
     getUser = query $ do
       userId :*: _ :*: user :*: _ <- select (gen users)

src/Database/Schema.hs

@@ -44,7 +44,7 @@ newtype UserID = UserID {unUserID :: Int} deriving (Show)
 
 newtype BookID = BookID {unBookID :: Int} deriving (Show, ToJSON, FromJSON, FromHttpApiData, Eq, Ord)
 
-newtype ChannelID = ChannelID {unChannelID :: Int} deriving (Show, ToHttpApiData, FromHttpApiData, ToJSON, FromJSON)
+newtype ChannelID = ChannelID {unChannelID :: Int} deriving (Show, ToHttpApiData, FromHttpApiData)
 
 newtype TagID = TagID {unTagID :: Int} deriving (Show)
 

src/Servant/XML.hs

@@ -1,11 +1,9 @@
 {-# Language OverloadedStrings #-}
 {-# Language FlexibleInstances #-}
 {-# Language MultiParamTypeClasses #-}
-{-# Language TypeApplications #-}
 module Servant.XML
   ( ToNode(..)
   , XML
-  , OPDS
   , Text.Hamlet.XML.xml
   , iso8601 )
   where
@@ -18,22 +16,14 @@ import Network.HTTP.Media.MediaType
 
 data XML
 
-data OPDS
-
 instance (ToNode a) => MimeRender XML a where
   mimeRender _ a =
     let [NodeElement root] = toNode a
     in renderLBS def (Document (Prologue [] Nothing []) root [])
 
-instance (ToNode a) => MimeRender OPDS a where
-  mimeRender _ a = mimeRender (Proxy @XML) a
-
 instance Accept XML where
   contentType _ = "application" // "xml" /: ("charset", "utf-8")
 
-instance Accept OPDS where
-  contentType _ = "application" // "atom+xml" /: ("charset", "utf-8") /: ("profile", "opds-catalog")
-
 iso8601 :: UTCTime -> Text
 iso8601 = pack . formatTime defaultTimeLocale "%Y-%m-%dT%H:%M:%SZ"