initial commit

.gitignore

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+static/
+TAGS
+*.js_*
+.stack-work/

LICENSE

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+Copyright Yann Esposito (c) 2016
+
+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 Yann Esposito 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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+# Stack Transient Repository
+
+This is a stack project which implement this example Transient project:
+
+[see this thread on Reddit](https://www.reddit.com/r/elm/comments/4wq3ko/playing_with_websockets_in_haskell_and_elm/d69o11p)
+
+## Usage
+
+1. Install [`stack`](haskellstack.org)
+2. Install ghc and ghcjs with stack.
+   If you never installed ghcjs that could take a _lot_ of time.
+
+~~~
+stack setup
+stack --stack-yaml stack-ghcjs.yaml setup
+~~~
+
+3. Compile the example
+
+~~~
+stack build
+stack --stack-yaml stack-ghcjs.yaml build
+~~~
+
+4. Link the result of the GHCJS compilation in the right directory
+
+~~~
+./mklink.sh
+~~~
+
+5. Start the server
+
+~~~
+./start.sh
+~~~
+
+6. Open <http://localhost:3000> in many different web browsers and play.

Setup.hs

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+import Distribution.Simple
+main = defaultMain

app/Main.hs

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+module Main where
+
+import Lib (startServer)
+
+main :: IO ()
+main = startServer

mklink.sh

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+#!/usr/bin/env bash
+
+dst=static/out.jsexe
+\rm -rf $dst
+[[ ! -d static ]] && mkdir static
+
+ln -s ../$(stack --stack-yaml stack-ghcjs.yaml path --dist-dir)/build/wse-exe/wse-exe.jsexe/ $dst

src/Lib.hs

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+{-# LANGUAGE NoMonomorphismRestriction #-}
+module Lib
+  ( startServer )
+where
+
+import GHCJS.HPlay.View
+import Transient.Base
+import Transient.Move
+import Data.IORef
+import Control.Monad.IO.Class
+import Data.String
+import Prelude hiding(div,id)
+
+startServer :: IO ()
+startServer = keep . initNode $ onBrowser peekPoke
+
+peekPoke = do
+   model <- onAll . liftIO $ newIORef (0 :: Int)
+   poke  <|> peek model
+
+pokeMessages = fs "pokeMessages"
+
+-- send a message to the server each click
+poke :: Cloud ()
+poke  =  do
+    local $ render $ do
+       rawHtml $ div  ! id (fs "pokes") $ p "Pokes: 0"
+       inputSubmit  "Poke others" `fire` OnClick
+
+    atRemote . local $ putMailbox pokeMessages "poke" >> stop  -- update the mailbox in the server
+
+-- receive updates from the server
+peek :: IORef Int -> Cloud ()
+peek model = do
+    msg <- atRemote . local $ getMailbox pokeMessages  :: Cloud String  -- each update send a msg to each client
+    local $ render $ do
+       n <- liftIO $ atomicModifyIORef model $ \n ->  (n +1,n+1)
+       at  (fs "#pokes")  Insert . rawHtml  $ p $  "Pokes: " ++  show n
+
+fs= fromString

stack-ghcjs.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:
+# http://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
+# resolver:
+#  name: custom-snapshot
+#  location: "./custom-snapshot.yaml"
+resolver: lts-6.10
+
+# 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
+#   extra-dep: true
+#  subdirs:
+#  - auto-update
+#  - wai
+# 
+# A package marked 'extra-dep: true' will only be built if demanded by a
+# non-dependency (i.e. a user package), and its test suites and benchmarks
+# will not be run. This is useful for tweaking upstream packages.
+packages:
+- '.'
+# Dependency packages to be pulled from upstream that are not in the resolver
+# (e.g., acme-missiles-0.3)
+extra-deps:
+- ghcjs-perch-0.3.3
+- transient-0.4.2
+- transient-universe-0.3.2.1
+- ghcjs-hplay-0.3.4
+
+# 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: ">=1.1"
+# 
+# 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
+
+# GHCJS
+compiler: ghcjs-0.2.0.20160414_ghc-7.10.3
+compiler-check: match-exact
+setup-info:
+  ghcjs:
+    source:
+      ghcjs-0.2.0.20160414_ghc-7.10.3:
+        url: https://s3.amazonaws.com/ghcjs/ghcjs-0.2.0.20160414_ghc-7.10.3.tar.gz
+        sha1: 6d6f307503be9e94e0c96ef1308c7cf224d06be3

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:
+# http://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
+# resolver:
+#  name: custom-snapshot
+#  location: "./custom-snapshot.yaml"
+resolver: lts-6.10
+
+# 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
+#   extra-dep: true
+#  subdirs:
+#  - auto-update
+#  - wai
+# 
+# A package marked 'extra-dep: true' will only be built if demanded by a
+# non-dependency (i.e. a user package), and its test suites and benchmarks
+# will not be run. This is useful for tweaking upstream packages.
+packages:
+- '.'
+# Dependency packages to be pulled from upstream that are not in the resolver
+# (e.g., acme-missiles-0.3)
+extra-deps:
+- ghcjs-perch-0.3.3
+- transient-0.4.2
+- transient-universe-0.3.2.1
+- ghcjs-hplay-0.3.4
+
+# 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: ">=1.1"
+# 
+# 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

start.sh

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+#!/usr/bin/env bash
+
+stack exec -- wse-exe -p start/localhost/3000

test/Spec.hs

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

wse.cabal

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+name:                wse
+version:             0.1.0.0
+synopsis:            Initial project template from stack
+description:         Please see README.md
+homepage:            https://github.com/yogsototh/wse#readme
+license:             BSD3
+license-file:        LICENSE
+author:              Yann Esposito
+maintainer:          yann.esposito@gmail.com
+copyright:           2016 Yann Esposito
+category:            Web
+build-type:          Simple
+-- extra-source-files:
+cabal-version:       >=1.10
+
+library
+  hs-source-dirs:      src
+  exposed-modules:     Lib
+  build-depends:       base >= 4.7 && < 5
+                     , transient
+                     , transient-universe
+                     , transformers
+                     , ghcjs-hplay
+  default-language:    Haskell2010
+
+executable wse-exe
+  hs-source-dirs:      app
+  main-is:             Main.hs
+  ghc-options:         -threaded -rtsopts -with-rtsopts=-N
+  build-depends:       base
+                     , wse
+  default-language:    Haskell2010
+
+test-suite wse-test
+  type:                exitcode-stdio-1.0
+  hs-source-dirs:      test
+  main-is:             Spec.hs
+  build-depends:       base
+                     , wse
+  ghc-options:         -threaded -rtsopts -with-rtsopts=-N
+  default-language:    Haskell2010
+
+source-repository head
+  type:     git
+  location: https://github.com/yogsototh/wse