cabal.project

@@ -1 +0,0 @@
-packages: */*

default.nix

@@ -1,6 +1,6 @@
 { mkDerivation, aeson, amqp, base, bytestring, containers, dhall
 , hedgehog, hspec, hspec-hedgehog, lens, lens-aeson, lib, mtl
-, pipes, reddit-lib, sqlite-simple, text, wreq
+, pipes, sqlite-simple, text, wreq
 }:
 mkDerivation {
   pname = "reddit-pub";
@@ -8,10 +8,9 @@ mkDerivation {
   src = ./.;
   isLibrary = true;
   isExecutable = true;
-  enableSeparateDataOutput = true;
   libraryHaskellDepends = [
     aeson amqp base bytestring containers dhall lens lens-aeson mtl
-    pipes reddit-lib sqlite-simple text wreq
+    pipes sqlite-simple text wreq
   ];
   executableHaskellDepends = [ base ];
   testHaskellDepends = [

flake.nix

@@ -12,10 +12,8 @@
   {
     overlay = final: prev: {
       haskellPackages = prev.haskellPackages.override ( old: {
-        overrides = final.lib.composeExtensions ( old.overrides or (_: _: {})) (f: p: rec {
-          reddit-pub = f.callPackage ./reddit_pub {};
-          reddit-lib = f.callPackage ./reddit_lib {};
-          reddit-tags = f.callPackage ./reddit_tags {};
+        overrides = final.lib.composeExtensions ( old.overrides or (_: _: {})) (f: p: {
+          reddit-pub = f.callPackage ./. {};
         });
       } );
     };
@@ -30,13 +28,12 @@
 
         packages.reddit-pub = pkgs.haskell.lib.justStaticExecutables hp.reddit-pub;
         packages.reddit-pub-dhall = pkgs.dhallPackages.callPackage ./dhall.nix {};
-        packages.reddit-tags = pkgs.haskell.lib.justStaticExecutables hp.reddit-tags;
 
         defaultPackage = packages.reddit-pub;
 
         devShell =
           hp.shellFor {
-            packages = h: [h.reddit-pub h.reddit-tags];
+            packages = h: [h.reddit-pub];
             withHoogle = true;
             buildInputs = with pkgs; [
               dhall-lsp-server

hie.yaml

@@ -1,2 +0,0 @@
-cradle:
-  cabal:

rabbitmq.nix

@@ -1,27 +1,11 @@
 { lib, config, pkgs, ... }:
 
-let
-  cookie = "dontusethisinprod";
-  setup = pkgs.writeScriptBin "setup-rabbitmq.sh" ''
-  rabbitmqctl --erlang-cookie "${cookie}" add_vhost reddit
-  rabbitmqctl --erlang-cookie "${cookie}" add_user admin_user password
-  rabbitmqctl --erlang-cookie "${cookie}" set_user_tags admin_user administrator
-  rabbitmqctl --erlang-cookie "${cookie}" set_permissions -p / admin_user ".*" ".*" ".*"
-  rabbitmqctl --erlang-cookie "${cookie}" set_permissions -p reddit admin_user ".*" ".*" ".*"
-
-  rabbitmqctl --erlang-cookie "${cookie}" add_user reddit_user password
-  rabbitmqctl --erlang-cookie "${cookie}" set_permissions -p reddit reddit_user ".*" ".*" ".*"
-  '';
-in
 {
   services.rabbitmq = {
     enable = true;
     listenAddress = "0.0.0.0";
     managementPlugin.enable = true;
-    cookie = "dontusethisinprod";
   };
   networking.firewall.allowedTCPPorts = [ 5672 15672 ];
-
-  environment.systemPackages = [ setup ];
 }
 

reddit-pub.cabal

@@ -32,6 +32,7 @@ library
                       Data.Deriving.Aeson
                       Network.Reddit
                       Data.SubReddit
+                      Publish
                       Membership
 
     -- Modules included in this library but not exported.
@@ -52,7 +53,6 @@ library
                     , pipes
                     , containers
                     , sqlite-simple
-                    , reddit-lib
     hs-source-dirs:   src
     default-language: Haskell2010
 

reddit_lib/CHANGELOG.md

@@ -1,5 +0,0 @@
-# Revision history for reddit-lib
-
-## 0.1.0.0 -- YYYY-mm-dd
-
-* First version. Released on an unsuspecting world.

reddit_lib/default.nix

@@ -1,10 +0,0 @@
-{ mkDerivation, base, lib }:
-mkDerivation {
-  pname = "reddit-lib";
-  version = "0.1.0.0";
-  src = ./.;
-  libraryHaskellDepends = [ base ];
-  testHaskellDepends = [ base ];
-  license = "unknown";
-  hydraPlatforms = lib.platforms.none;
-}

reddit_lib/reddit-lib.cabal

@@ -1,38 +0,0 @@
-cabal-version:      3.0
-name:               reddit-lib
-version:            0.1.0.0
-synopsis:
-
--- A longer description of the package.
--- description:
-homepage:
-
--- A URL where users can report bugs.
--- bug-reports:
-license:            NONE
-author:             Mats Rauhala
-maintainer:         mats.rauhala@iki.fi
-
--- A copyright notice.
--- copyright:
-category:           Web
-extra-source-files: CHANGELOG.md
-
-library
-    exposed-modules:  Reddit.Publish
-
-    -- Modules included in this library but not exported.
-    -- other-modules:
-
-    -- LANGUAGE extensions used by modules in this package.
-    -- other-extensions:
-    build-depends:    base ^>=4.15.1.0
-    hs-source-dirs:   src
-    default-language: Haskell2010
-
-test-suite reddit-lib-test
-    default-language: Haskell2010
-    type:             exitcode-stdio-1.0
-    hs-source-dirs:   test
-    main-is:          MyLibTest.hs
-    build-depends:    base ^>=4.15.1.0

reddit_lib/test/MyLibTest.hs

@@ -1,4 +0,0 @@
-module Main (main) where
-
-main :: IO ()
-main = putStrLn "Test suite not yet implemented."

reddit_tags/CHANGELOG.md

@@ -1,5 +0,0 @@
-# Revision history for reddit-tags
-
-## 0.1.0.0 -- YYYY-mm-dd
-
-* First version. Released on an unsuspecting world.

reddit_tags/app/Main.hs

@@ -1,8 +0,0 @@
-module Main where
-
-import qualified MyLib (someFunc)
-
-main :: IO ()
-main = do
-  putStrLn "Hello, Haskell!"
-  MyLib.someFunc

reddit_tags/default.nix

@@ -1,18 +0,0 @@
-{ mkDerivation, aeson, amqp, attoparsec, base, hspec, lens
-, lens-aeson, lib, mtl, reddit-lib, text, transformers
-}:
-mkDerivation {
-  pname = "reddit-tags";
-  version = "0.1.0.0";
-  src = ./.;
-  isLibrary = true;
-  isExecutable = true;
-  libraryHaskellDepends = [
-    aeson amqp attoparsec base lens lens-aeson mtl reddit-lib text
-    transformers
-  ];
-  executableHaskellDepends = [ base ];
-  testHaskellDepends = [ base hspec ];
-  license = "unknown";
-  hydraPlatforms = lib.platforms.none;
-}

reddit_tags/reddit-tags.cabal

@@ -1,67 +0,0 @@
-cabal-version:      3.0
-name:               reddit-tags
-version:            0.1.0.0
-synopsis:
-
--- A longer description of the package.
--- description:
-homepage:
-
--- A URL where users can report bugs.
--- bug-reports:
-license:            NONE
-author:             Mats Rauhala
-maintainer:         mats.rauhala@iki.fi
-
--- A copyright notice.
--- copyright:
-category:           Web
-extra-source-files: CHANGELOG.md
-
-library
-    exposed-modules:  MyLib
-                      Tags
-                      Transformer
-
-    -- Modules included in this library but not exported.
-    -- other-modules:
-
-    -- LANGUAGE extensions used by modules in this package.
-    -- other-extensions:
-    build-depends:    base ^>=4.15.1.0
-                    , amqp
-                    , reddit-lib
-                    , mtl
-                    , text
-                    , aeson
-                    , lens
-                    , lens-aeson
-                    , transformers
-                    , attoparsec
-                    , bytestring
-    hs-source-dirs:   src
-    default-language: Haskell2010
-
-executable reddit-tags
-    main-is:          Main.hs
-
-    -- Modules included in this executable, other than Main.
-    -- other-modules:
-
-    -- LANGUAGE extensions used by modules in this package.
-    -- other-extensions:
-    build-depends:
-        base ^>=4.15.1.0,
-        reddit-tags
-
-    hs-source-dirs:   app
-    default-language: Haskell2010
-
-test-suite reddit-tags-test
-    default-language: Haskell2010
-    type:             exitcode-stdio-1.0
-    hs-source-dirs:   test
-    main-is:          MyLibTest.hs
-    build-depends:    base ^>=4.15.1.0
-                    , hspec
-                    , reddit-tags

reddit_tags/src/MyLib.hs

@@ -1,57 +0,0 @@
-{-# LANGUAGE RecordWildCards #-}
-{-# LANGUAGE OverloadedStrings #-}
-module MyLib (someFunc) where
-import System.Environment (lookupEnv)
-import Control.Monad.Trans.Maybe (MaybeT(..))
-import Network.AMQP
-import qualified Data.Text as T
-import Data.Text (Text)
-import Control.Exception (bracket)
-import Control.Concurrent (newEmptyMVar, readMVar)
-import Control.Monad (void)
-
-import Control.Lens
-import Data.Aeson.Lens
-import Transformer
-import Data.ByteString.Lazy (ByteString)
-import Control.Category ((>>>))
-import Control.Arrow (arr, (&&&))
-import Tags (parseTags)
-
-data AMQP = AMQP
-  { host :: String
-  , vhost :: Text
-  , username :: Text
-  , password :: Text
-  }
-
-getAMQP :: IO (Maybe AMQP)
-getAMQP = runMaybeT $
-  AMQP <$> lookupEnvM "AMQP_HOST" <*> lookupEnvMText "AMQP_VHOST" <*> lookupEnvMText "AMQP_USER" <*> lookupEnvMText "AMQP_PASS"
-  where
-    lookupEnvM = MaybeT . lookupEnv
-    lookupEnvMText = fmap T.pack . lookupEnvM
-
-tagTransformer :: Transformer IO ByteString ()
-tagTransformer =
-  arrOpt (preview (key "content" . key "title" . _String))
-  >>> arr id &&& arr parseTags
-  >>> liftTransformer print
-
-someFunc :: IO ()
-someFunc = do
-  Just AMQP{..} <- getAMQP
-  let rabbitConnect = openConnection host vhost username password
-  bracket rabbitConnect closeConnection $ \conn -> do
-    chan <- openChannel conn
-    qos chan 0 1 False
-    declareQueue chan newQueue {queueName="reddit_tags"}
-    bindQueue chan "reddit_tags" "reddit_posts" "key"
-    consumeMsgs chan "reddit_tags" Ack $ \(msg, env) -> do
-      void $ runTransformer tagTransformer (msgBody msg)
-      -- let body = msgBody msg
-      -- let title = body ^? key "content" . key "title"
-      -- print title
-      -- print $ parseTags title
-      ackEnv env
-    void getLine

reddit_tags/src/Tags.hs

@@ -1,18 +0,0 @@
-{-# LANGUAGE ApplicativeDo #-}
-module Tags (parseTags) where
-
-import qualified Data.Attoparsec.Text as A
-import Data.Attoparsec.Text (Parser)
-import Data.Text (Text)
-import Data.Either (fromRight)
-
-tag :: Parser Text
-tag = do
-  A.skipWhile (/= '[')
-  A.char '[' *> A.takeWhile (/= ']') <* A.char ']'
-
-tags :: Parser [Text]
-tags = A.many1 tag
-
-parseTags :: Text -> [Text]
-parseTags = fromRight [] . A.parseOnly tags

reddit_tags/src/Transformer.hs

@@ -1,18 +0,0 @@
-{-# LANGUAGE DerivingVia #-}
-module Transformer where
-
-import Control.Category ( Category )
-import Control.Arrow ( Arrow, ArrowChoice, Kleisli(Kleisli) )
-import Control.Monad.Trans.Maybe ( MaybeT(MaybeT) )
-
-newtype Transformer m a b = Transformer (a -> m (Maybe b))
-  deriving (Category, Arrow, ArrowChoice) via Kleisli (MaybeT m)
-
-arrOpt :: Applicative m => (a -> Maybe b) -> Transformer m a b
-arrOpt f = Transformer (pure . f)
-
-liftTransformer :: Monad m => (a -> m b) -> Transformer m a b
-liftTransformer f = Transformer (fmap Just . f)
-
-runTransformer :: Monad m => Transformer m a b -> a -> m (Maybe b)
-runTransformer (Transformer tr) = tr

reddit_tags/test/MyLibTest.hs

@@ -1,17 +0,0 @@
-{-# LANGUAGE OverloadedStrings #-}
-module Main (main) where
-
-import Tags (parseTags)
-import Test.Hspec
-
-main :: IO ()
-main = hspec $
-  describe "Parser" $ do
-    it "Returns no results if there are no tags" $
-      parseTags "foo bar" `shouldBe` []
-    it "Returns a single result" $
-      parseTags "[foo]" `shouldBe` ["foo"]
-    it "Finds multiple results" $
-      parseTags "[foo][bar]" `shouldBe` ["foo", "bar"]
-    it "Finds multiple results with other text interleaved" $
-      parseTags "prefix [foo] infix [bar] suffix" `shouldBe` ["foo", "bar"]

src/MyLib.hs

@@ -43,7 +43,7 @@ import Network.AMQP
        )
 import Network.Reddit (RedditId(RedditId), publishEntries)
 import Network.Wreq.Session (newSession)
-import Reddit.Publish (Publish(..))
+import Publish (Publish(..))
 import Text.Printf (printf)
 import Data.ByteString.Lazy (ByteString)
 

src/Network/Reddit.hs

@@ -14,7 +14,7 @@ import Network.Wreq hiding (getWith)
 import Network.Wreq.Session (Session, getWith)
 import Pipes (Producer, (>->), for, runEffect)
 import qualified Pipes.Prelude as P
-import Reddit.Publish
+import Publish
 import Data.Maybe (maybeToList)
 import Control.Monad.Trans (liftIO)
 import Database.SQLite.Simple.ToField (ToField)

src/Publish.hs

@@ -1,5 +1,5 @@
 {-# LANGUAGE DerivingVia #-}
-module Reddit.Publish where
+module Publish where
 
 import Data.Functor.Contravariant
 import Data.Monoid (Ap(..))