Initial commit

.gitignore

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+.stack-work/
+pullwatch.cabal
+*~
+.envrc

ChangeLog.md

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+# Changelog for pullwatch
+
+## Unreleased changes

LICENSE

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+Copyright Wesley Kerfoot (c) 2019
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Wesley Kerfoot nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

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+# Pullwatch
+A Simple Haskell Daemon that monitors for new pull requests in a list of repos, and notifies you if there is a new one
+
+## How to Use
+* Create a new Github application (see [here](https://github.com/settings/apps))
+* Create a .envrc (or .env if you don't have direnv) with your personal access
+  token, e.g. `export PERSONAL_ACCESS_TOKEN = "foobarbaz"`
+* Source that file
+* Modify `Main.hs` (at the moment there is no other entrypoint to this) and
+  build or run it with stack
+* Make sure your desktop environment supports DBus notifications (e.g. [https://wiki.archlinux.org/index.php/Desktop_notifications](https://wiki.archlinux.org/index.php/Desktop_notifications) )

Setup.hs

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+import Distribution.Simple
+main = defaultMain

app/Main.hs

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+{-# LANGUAGE ImplicitParams #-}
+{-# LANGUAGE OverloadedStrings #-}
+module Main where
+
+import PullWatch.PullWatch (getLatestPRs, getLatest, toNote, prID)
+import PullWatch.Environment (getPAT)
+
+import Control.Applicative
+
+main :: IO ()
+main = do
+  -- Set up authentication token from environment
+  pat <- getPAT
+  let ?pat = pat
+
+  prIDs <- getLatestPRs [("racket", "racket")]
+  print prIDs
+
+  return ()

package.yaml

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+name:                pullwatch
+version:             0.1.0.0
+github:              "weskerfoot/pullwatch"
+license:             BSD3
+author:              "Wesley Kerfoot"
+maintainer:          "wes@wesk.tech"
+copyright:           ""
+
+extra-source-files:
+- README.md
+- ChangeLog.md
+
+# Metadata used when publishing your package
+# synopsis:            Short description of your package
+# category:            Web
+
+# To avoid duplicated efforts in documentation and dealing with the
+# complications of embedding Haddock markup inside cabal files, it is
+# common to point users to the README.md file.
+description:         Please see the README on GitHub at <https://github.com/weskerfoot/pullwatch#readme>
+
+dependencies:
+- base >= 4.7 && < 5
+
+library:
+  source-dirs: src
+
+executables:
+  pullwatch-exe:
+    main:                Main.hs
+    source-dirs:         app
+    ghc-options:
+    - -threaded
+    - -rtsopts
+    - -with-rtsopts=-N
+    dependencies:
+    - pullwatch
+
+tests:
+  pullwatch-test:
+    main:                Spec.hs
+    source-dirs:         test
+    ghc-options:
+    - -threaded
+    - -rtsopts
+    - -with-rtsopts=-N
+    dependencies:
+    - pullwatch

src/PullWatch/Environment.hs

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+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE ImplicitParams #-}
+
+module PullWatch.Environment
+    ( getPAT
+    ) where
+
+import System.Environment
+
+import qualified GitHub.Auth as Auth
+import qualified Data.ByteString.Char8 as C
+
+getPAT = do
+  (Just pat) <- lookupEnv "PERSONAL_ACCESS_TOKEN"
+  return $ Just $ Auth.OAuth $ C.pack pat

src/PullWatch/PullWatch.hs

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+{-# LANGUAGE NoImplicitPrelude #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE ImplicitParams #-}
+
+module PullWatch.PullWatch
+    (  getLatest
+     , getLatestAsync
+     , getLatestPRs
+     , prText
+     , prTitle
+     , prID
+     , toNote
+    ) where
+
+import GitHub.Data.PullRequests
+    (  simplePullRequestId
+     , simplePullRequestTitle
+     , simplePullRequestBody
+    )
+
+import Prelude.Compat
+import GitHub.Data.Id (untagId)
+import GitHub.Data.Name (untagName)
+import System.Environment (lookupEnv)
+import Data.Vector ((!))
+import DBus.Notify
+import Control.Concurrent.Async
+import Control.Applicative
+import Data.Maybe
+import Data.Monoid
+
+import qualified GitHub.Endpoints.PullRequests as PR
+import qualified GitHub.Auth as Auth
+import qualified Data.Text as T
+
+data PullRequest = PR {
+                    prText :: T.Text
+                  , prTitle :: T.Text
+                  , prRepo :: T.Text
+                  , prOwner :: T.Text
+                  , prID :: Integer }
+
+                  deriving (Show)
+
+
+fiveMinutes = 300000000
+
+getPRId = Just . fromIntegral . untagId . simplePullRequestId . (! 0)
+
+getPRTitle = Just . simplePullRequestTitle . (! 0)
+
+getPRBody = simplePullRequestBody . (! 0)
+
+-- Converts a pull request into a dbus notification
+toNote :: Maybe PullWatch.PullWatch.PullRequest -> Maybe Note
+
+toNote Nothing = Nothing
+toNote (Just pr) =
+  Just $ blankNote {
+      summary = T.unpack $ prRepo pr
+    , body = (Just $ Text $ T.unpack $ prTitle pr)
+    , appImage = (Just $ Icon "dialog-information")
+  }
+
+getLatest :: (?pat :: (Maybe Auth.Auth)) =>
+             (PR.Name PR.Owner) ->
+             (PR.Name PR.Repo) ->
+             IO (Maybe PullRequest)
+
+getLatest owner repo = do
+  prs <- PR.pullRequestsFor' ?pat owner repo
+  let pr = case prs of
+            (Left _) -> Nothing
+            (Right pullreqs) -> do
+              id <- getPRId pullreqs
+              title <- getPRTitle pullreqs
+              body <- getPRBody pullreqs
+              let repoName = untagName repo
+              let repoOwner = untagName owner
+              return $ PR body title repoName repoOwner id
+  return pr
+
+getLatestAsync owner repo = do
+    client <- connectSession
+
+    async $ poll client where
+      poll client = do
+        latest <- getLatest owner repo
+        notification <- maybe undefined (notify client) (toNote latest)
+        return $ prID <$> latest
+
+getLatestPRs :: (?pat :: (Maybe Auth.Auth)) =>
+                [(PR.Name PR.Owner, PR.Name PR.Repo)] ->
+                IO [Maybe (T.Text, T.Text, Integer)]
+
+getLatestPRs repos = do
+  prs <- mapConcurrently (uncurry getLatest) repos
+  return $ map ((\pr -> (prRepo pr, prOwner pr, prID pr)) <$>) prs

stack.yaml

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+# This file was automatically generated by 'stack init'
+#
+# Some commonly used options have been documented as comments in this file.
+# For advanced use and comprehensive documentation of the format, please see:
+# https://docs.haskellstack.org/en/stable/yaml_configuration/
+
+# Resolver to choose a 'specific' stackage snapshot or a compiler version.
+# A snapshot resolver dictates the compiler version and the set of packages
+# to be used for project dependencies. For example:
+#
+# resolver: lts-3.5
+# resolver: nightly-2015-09-21
+# resolver: ghc-7.10.2
+# resolver: ghcjs-0.1.0_ghc-7.10.2
+#
+# The location of a snapshot can be provided as a file or url. Stack assumes
+# a snapshot provided as a file might change, whereas a url resource does not.
+#
+# resolver: ./custom-snapshot.yaml
+# resolver: https://example.com/snapshots/2018-01-01.yaml
+resolver: lts-13.14
+
+# User packages to be built.
+# Various formats can be used as shown in the example below.
+#
+# packages:
+# - some-directory
+# - https://example.com/foo/bar/baz-0.0.2.tar.gz
+# - location:
+#    git: https://github.com/commercialhaskell/stack.git
+#    commit: e7b331f14bcffb8367cd58fbfc8b40ec7642100a
+# - location: https://github.com/commercialhaskell/stack/commit/e7b331f14bcffb8367cd58fbfc8b40ec7642100a
+#  subdirs:
+#  - auto-update
+#  - wai
+packages:
+- .
+# Dependency packages to be pulled from upstream that are not in the resolver
+# using the same syntax as the packages field.
+# (e.g., acme-missiles-0.3)
+extra-deps:
+  - fdo-notify-0.3.1
+  - github-0.21
+
+# Override default flag values for local packages and extra-deps
+# flags: {}
+
+# Extra package databases containing global packages
+# extra-package-dbs: []
+
+# Control whether we use the GHC we find on the path
+# system-ghc: true
+#
+# Require a specific version of stack, using version ranges
+# require-stack-version: -any # Default
+# require-stack-version: ">=1.7"
+#
+# Override the architecture used by stack, especially useful on Windows
+# arch: i386
+# arch: x86_64
+#
+# Extra directories used by stack for building
+# extra-include-dirs: [/path/to/dir]
+# extra-lib-dirs: [/path/to/dir]
+#
+# Allow a newer minor version of GHC than the snapshot specifies
+# compiler-check: newer-minor

test/Spec.hs

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+main :: IO ()
+main = putStrLn "Test suite not yet implemented"