stack new bookme yesod-simple

.dir-locals.el

+((haskell-mode . ((haskell-indent-spaces . 4)
+                  (haskell-process-use-ghci . t)))
+ (hamlet-mode . ((hamlet/basic-offset . 4)
+                 (haskell-process-use-ghci . t))))

.gitignore

+dist*
+static/tmp/
+static/combined/
+config/client_session_key.aes
+*.hi
+*.o
+*.sqlite3
+*.sqlite3-shm
+*.sqlite3-wal
+.hsenv*
+cabal-dev/
+.stack-work/
+yesod-devel/
+.cabal-sandbox
+cabal.sandbox.config
+.DS_Store
+*.swp
+*.keter
+*~
+\#*
+bookme.cabal

README.md

+## Haskell Setup
+
+1. If you haven't already, [install Stack](https://haskell-lang.org/get-started)
+	* On POSIX systems, this is usually `curl -sSL https://get.haskellstack.org/ | sh`
+2. Install the `yesod` command line tool: `stack install yesod-bin --install-ghc`
+3. Build libraries: `stack build`
+
+If you have trouble, refer to the [Yesod Quickstart guide](https://www.yesodweb.com/page/quickstart) for additional detail.
+
+## Development
+
+Start a development server with:
+
+```
+stack exec -- yesod devel
+```
+
+As your code changes, your site will be automatically recompiled and redeployed to localhost.
+
+## Tests
+
+```
+stack test --flag bookme:library-only --flag bookme:dev
+```
+
+(Because `yesod devel` passes the `library-only` and `dev` flags, matching those flags means you don't need to recompile between tests and development, and it disables optimization to speed up your test compile times).
+
+## Documentation
+
+* Read the [Yesod Book](https://www.yesodweb.com/book) online for free
+* Check [Stackage](http://stackage.org/) for documentation on the packages in your LTS Haskell version, or [search it using Hoogle](https://www.stackage.org/lts/hoogle?q=). Tip: Your LTS version is in your `stack.yaml` file.
+* For local documentation, use:
+	* `stack haddock --open` to generate Haddock documentation for your dependencies, and open that documentation in a browser
+	* `stack hoogle <function, module or type signature>` to generate a Hoogle database and search for your query
+* The [Yesod cookbook](https://github.com/yesodweb/yesod-cookbook) has sample code for various needs
+
+## Getting Help
+
+* Ask questions on [Stack Overflow, using the Yesod or Haskell tags](https://stackoverflow.com/questions/tagged/yesod+haskell)
+* Ask the [Yesod Google Group](https://groups.google.com/forum/#!forum/yesodweb)
+* There are several chatrooms you can ask for help:
+	* For IRC, try Freenode#yesod and Freenode#haskell
+	* [Functional Programming Slack](https://fpchat-invite.herokuapp.com/), in the #haskell, #haskell-beginners, or #yesod channels.

app/DevelMain.hs

+-- | Running your app inside GHCi.
+--
+-- To start up GHCi for usage with Yesod, first make sure you are in dev mode:
+--
+-- > cabal configure -fdev
+--
+-- Note that @yesod devel@ automatically sets the dev flag.
+-- Now launch the repl:
+--
+-- > cabal repl --ghc-options="-O0 -fobject-code"
+--
+-- To start your app, run:
+--
+-- > :l DevelMain
+-- > DevelMain.update
+--
+-- You can also call @DevelMain.shutdown@ to stop the app
+--
+-- You will need to add the foreign-store package to your .cabal file.
+-- It is very light-weight.
+--
+-- If you don't use cabal repl, you will need
+-- to run the following in GHCi or to add it to
+-- your .ghci file.
+--
+-- :set -DDEVELOPMENT
+--
+-- There is more information about this approach,
+-- on the wiki: https://github.com/yesodweb/yesod/wiki/ghci
+
+module DevelMain where
+
+import Prelude
+import Application (getApplicationRepl, shutdownApp)
+
+import Control.Exception (finally)
+import Control.Monad ((>=>))
+import Control.Concurrent
+import Data.IORef
+import Foreign.Store
+import Network.Wai.Handler.Warp
+import GHC.Word
+
+-- | Start or restart the server.
+-- newStore is from foreign-store.
+-- A Store holds onto some data across ghci reloads
+update :: IO ()
+update = do
+    mtidStore <- lookupStore tidStoreNum
+    case mtidStore of
+      -- no server running
+      Nothing -> do
+          done <- storeAction doneStore newEmptyMVar
+          tid <- start done
+          _ <- storeAction (Store tidStoreNum) (newIORef tid)
+          return ()
+      -- server is already running
+      Just tidStore -> restartAppInNewThread tidStore
+  where
+    doneStore :: Store (MVar ())
+    doneStore = Store 0
+
+    -- shut the server down with killThread and wait for the done signal
+    restartAppInNewThread :: Store (IORef ThreadId) -> IO ()
+    restartAppInNewThread tidStore = modifyStoredIORef tidStore $ \tid -> do
+        killThread tid
+        withStore doneStore takeMVar
+        readStore doneStore >>= start
+
+
+    -- | Start the server in a separate thread.
+    start :: MVar () -- ^ Written to when the thread is killed.
+          -> IO ThreadId
+    start done = do
+        (port, site, app) <- getApplicationRepl
+        forkIO (finally (runSettings (setPort port defaultSettings) app)
+                        -- Note that this implies concurrency
+                        -- between shutdownApp and the next app that is starting.
+                        -- Normally this should be fine
+                        (putMVar done () >> shutdownApp site))
+
+-- | kill the server
+shutdown :: IO ()
+shutdown = do
+    mtidStore <- lookupStore tidStoreNum
+    case mtidStore of
+      -- no server running
+      Nothing -> putStrLn "no Yesod app running"
+      Just tidStore -> do
+          withStore tidStore $ readIORef >=> killThread
+          putStrLn "Yesod app is shutdown"
+
+tidStoreNum :: Word32
+tidStoreNum = 1
+
+modifyStoredIORef :: Store (IORef a) -> (a -> IO a) -> IO ()
+modifyStoredIORef store f = withStore store $ \ref -> do
+    v <- readIORef ref
+    f v >>= writeIORef ref

app/devel.hs

+{-# LANGUAGE PackageImports #-}
+import "bookme" Application (develMain)
+import Prelude (IO)
+
+main :: IO ()
+main = develMain

app/main.hs

+import Prelude     (IO)
+import Application (appMain)
+
+main :: IO ()
+main = appMain

config/keter.yml

+# After you've edited this file, remove the following line to allow
+# `yesod keter` to build your bundle.
+user-edited: false
+
+# A Keter app is composed of 1 or more stanzas. The main stanza will define our
+# web application. See the Keter documentation for more information on
+# available stanzas.
+stanzas:
+
+  # Your Yesod application.
+  - type: webapp
+
+    # Name of your executable. You are unlikely to need to change this.
+    # Note that all file paths are relative to the keter.yml file.
+    #
+    # The path given is for Stack projects. If you're still using cabal, change
+    # to
+    # exec: ../dist/build/bookme/bookme
+    exec: ../dist/bin/bookme
+
+    # Command line options passed to your application.
+    args: []
+
+    hosts:
+      # You can specify one or more hostnames for your application to respond
+      # to. The primary hostname will be used for generating your application
+      # root.
+      - www.bookme.com
+
+    # Enable to force Keter to redirect to https
+    # Can be added to any stanza
+    requires-secure: false
+
+  # Static files.
+  - type: static-files
+    hosts:
+      - static.bookme.com
+    root: ../static
+
+    # Uncomment to turn on directory listings.
+    # directory-listing: true
+
+  # Redirect plain domain name to www.
+  - type: redirect
+
+    hosts:
+      - bookme.com
+    actions:
+      - host: www.bookme.com
+        # secure: false
+        # port: 80
+
+    # Uncomment to switch to a non-permanent redirect.
+    # status: 303
+
+# Use the following to automatically copy your bundle upon creation via `yesod
+# keter`. Uses `scp` internally, so you can set it to a remote destination
+# copy-to: user@host:/opt/keter/incoming/
+
+# You can pass arguments to `scp` used above. This example limits bandwidth to
+# 1024 Kbit/s and uses port 2222 instead of the default 22
+# copy-to-args:
+#   - "-l 1024"
+#   - "-P 2222"
+
+# If you would like to have Keter automatically create a PostgreSQL database
+# and set appropriate environment variables for it to be discovered, uncomment
+# the following line.
+# plugins:
+#   postgres: true

config/robots.txt

+User-agent: *

config/routes

+-- By default this file is used by `parseRoutesFile` in Foundation.hs
+-- Syntax for this file here: https://www.yesodweb.com/book/routing-and-handlers
+
+/static StaticR Static appStatic
+
+/favicon.ico FaviconR GET
+/robots.txt RobotsR GET
+
+/ HomeR GET POST
+
+/comments CommentR POST

config/settings.yml

+# Values formatted like "_env:ENV_VAR_NAME:default_value" can be overridden by the specified environment variable.
+# See https://github.com/yesodweb/yesod/wiki/Configuration#overriding-configuration-values-with-environment-variables
+
+static-dir:     "_env:STATIC_DIR:static"
+host:           "_env:HOST:*4" # any IPv4 host
+port:           "_env:PORT:3000" # NB: The port `yesod devel` uses is distinct from this value. Set the `yesod devel` port from the command line.
+ip-from-header: "_env:IP_FROM_HEADER:false"
+
+# Default behavior: determine the application root from the request headers.
+# Uncomment to set an explicit approot
+#approot:        "_env:APPROOT:http://localhost:3000"
+
+# By default, `yesod devel` runs in development, and built executables use
+# production settings (see below). To override this, use the following:
+#
+# development: false
+
+# Optional values with the following production defaults.
+# In development, they default to the inverse.
+#
+# development: false
+# detailed-logging: false
+# should-log-all: false
+# reload-templates: false
+# mutable-static: false
+# skip-combining: false
+
+copyright: Insert copyright statement here
+#analytics: UA-YOURCODE

config/test-settings.yml

+{}

package.yaml

+name:    bookme
+version: "0.0.0"
+
+dependencies:
+
+# Due to a bug in GHC 8.0.1, we block its usage
+# See: https://ghc.haskell.org/trac/ghc/ticket/12130
+- base >=4.8.2.0 && <4.9 || >=4.9.1.0 && <5
+
+- yesod >=1.6 && <1.7
+- yesod-core >=1.6 && <1.7
+- yesod-static >=1.6 && <1.7
+- yesod-form >=1.6 && <1.7
+- classy-prelude >=1.4 && <1.5
+- classy-prelude-conduit >=1.4 && <1.5
+- classy-prelude-yesod >=1.4 && <1.5
+- bytestring >=0.9 && <0.11
+- text >=0.11 && <2.0
+- template-haskell
+- shakespeare >=2.0 && <2.1
+- hjsmin >=0.1 && <0.3
+- monad-control >=0.3 && <1.1
+- wai-extra >=3.0 && <3.1
+- yaml >=0.8 && <0.9
+- http-client-tls >=0.3 && <0.4
+- http-conduit >=2.3 && <2.4
+- directory >=1.1 && <1.4
+- warp >=3.0 && <3.3
+- data-default
+- aeson >=0.6 && <1.3
+- conduit >=1.0 && <2.0
+- monad-logger >=0.3 && <0.4
+- fast-logger >=2.2 && <2.5
+- wai-logger >=2.2 && <2.4
+- file-embed
+- safe
+- unordered-containers
+- containers
+- vector
+- time
+- case-insensitive
+- wai
+- foreign-store
+
+# The library contains all of our application code. The executable
+# defined below is just a thin wrapper.
+library:
+  source-dirs: src
+  when:
+  - condition: (flag(dev)) || (flag(library-only))
+    then:
+      ghc-options:
+      - -Wall
+      - -fwarn-tabs
+      - -O0
+      cpp-options: -DDEVELOPMENT
+    else:
+      ghc-options:
+      - -Wall
+      - -fwarn-tabs
+      - -O2
+
+# Runnable executable for our application
+executables:
+  bookme:
+    main: main.hs
+    source-dirs: app
+    ghc-options:
+    - -threaded
+    - -rtsopts
+    - -with-rtsopts=-N
+    dependencies:
+    - bookme
+    when:
+    - condition: flag(library-only)
+      buildable: false
+
+# Test suite
+tests:
+  bookme-test:
+    main: Spec.hs
+    source-dirs: test
+    ghc-options: -Wall
+    dependencies:
+    - bookme
+    - hspec >=2.0.0
+    - yesod-test
+
+# Define flags used by "yesod devel" to make compilation faster
+flags:
+  library-only:
+    description: Build for use with "yesod devel"
+    manual: false
+    default: false
+  dev:
+    description: Turn on development settings, like auto-reload templates.
+    manual: false
+    default: false

src/Application.hs

+{-# LANGUAGE NoImplicitPrelude #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE TemplateHaskell #-}
+{-# LANGUAGE MultiParamTypeClasses #-}
+{-# LANGUAGE TypeFamilies #-}
+{-# LANGUAGE ViewPatterns #-}
+{-# LANGUAGE RecordWildCards #-}
+{-# OPTIONS_GHC -fno-warn-orphans #-}
+module Application
+    ( getApplicationDev
+    , appMain
+    , develMain
+    , makeFoundation
+    , makeLogWare
+    -- * for DevelMain
+    , getApplicationRepl
+    , shutdownApp
+    -- * for GHCI
+    , handler
+    ) where
+
+import Control.Monad.Logger                 (liftLoc)
+import Import
+import Language.Haskell.TH.Syntax           (qLocation)
+import Network.HTTP.Client.TLS              (getGlobalManager)
+import Network.Wai (Middleware)
+import Network.Wai.Handler.Warp             (Settings, defaultSettings,
+                                             defaultShouldDisplayException,
+                                             runSettings, setHost,
+                                             setOnException, setPort, getPort)
+import Network.Wai.Middleware.RequestLogger (Destination (Logger),
+                                             IPAddrSource (..),
+                                             OutputFormat (..), destination,
+                                             mkRequestLogger, outputFormat)
+import System.Log.FastLogger                (defaultBufSize, newStdoutLoggerSet,
+                                             toLogStr)
+
+-- Import all relevant handler modules here.
+-- Don't forget to add new modules to your cabal file!
+import Handler.Common
+import Handler.Home
+import Handler.Comment
+
+-- This line actually creates our YesodDispatch instance. It is the second half
+-- of the call to mkYesodData which occurs in Foundation.hs. Please see the
+-- comments there for more details.
+mkYesodDispatch "App" resourcesApp
+
+-- | This function allocates resources (such as a database connection pool),
+-- performs initialization and returns a foundation datatype value. This is also
+-- the place to put your migrate statements to have automatic database
+-- migrations handled by Yesod.
+makeFoundation :: AppSettings -> IO App
+makeFoundation appSettings = do
+    -- Some basic initializations: HTTP connection manager, logger, and static
+    -- subsite.
+    appHttpManager <- getGlobalManager
+    appLogger <- newStdoutLoggerSet defaultBufSize >>= makeYesodLogger
+    appStatic <-
+        (if appMutableStatic appSettings then staticDevel else static)
+        (appStaticDir appSettings)
+
+    -- Return the foundation
+    return App {..}
+
+-- | Convert our foundation to a WAI Application by calling @toWaiAppPlain@ and
+-- applying some additional middlewares.
+makeApplication :: App -> IO Application
+makeApplication foundation = do
+    logWare <- makeLogWare foundation
+    -- Create the WAI application and apply middlewares
+    appPlain <- toWaiAppPlain foundation
+    return $ logWare $ defaultMiddlewaresNoLogging appPlain
+
+makeLogWare :: App -> IO Middleware
+makeLogWare foundation =
+    mkRequestLogger def
+        { outputFormat =
+            if appDetailedRequestLogging $ appSettings foundation
+                then Detailed True
+                else Apache
+                        (if appIpFromHeader $ appSettings foundation
+                            then FromFallback
+                            else FromSocket)
+        , destination = Logger $ loggerSet $ appLogger foundation
+        }
+
+
+-- | Warp settings for the given foundation value.
+warpSettings :: App -> Settings
+warpSettings foundation =
+      setPort (appPort $ appSettings foundation)
+    $ setHost (appHost $ appSettings foundation)
+    $ setOnException (\_req e ->
+        when (defaultShouldDisplayException e) $ messageLoggerSource
+            foundation
+            (appLogger foundation)
+            $(qLocation >>= liftLoc)
+            "yesod"
+            LevelError
+            (toLogStr $ "Exception from Warp: " ++ show e))
+      defaultSettings
+
+-- | For yesod devel, return the Warp settings and WAI Application.
+getApplicationDev :: IO (Settings, Application)
+getApplicationDev = do
+    settings <- getAppSettings
+    foundation <- makeFoundation settings
+    wsettings <- getDevSettings $ warpSettings foundation
+    app <- makeApplication foundation
+    return (wsettings, app)
+
+getAppSettings :: IO AppSettings
+getAppSettings = loadYamlSettings [configSettingsYml] [] useEnv
+
+-- | main function for use by yesod devel
+develMain :: IO ()
+develMain = develMainHelper getApplicationDev
+
+-- | The @main@ function for an executable running this site.
+appMain :: IO ()
+appMain = do
+    -- Get the settings from all relevant sources
+    settings <- loadYamlSettingsArgs
+        -- fall back to compile-time values, set to [] to require values at runtime
+        [configSettingsYmlValue]
+
+        -- allow environment variables to override
+        useEnv
+
+    -- Generate the foundation from the settings
+    foundation <- makeFoundation settings
+
+    -- Generate a WAI Application from the foundation
+    app <- makeApplication foundation
+
+    -- Run the application with Warp
+    runSettings (warpSettings foundation) app
+
+
+--------------------------------------------------------------
+-- Functions for DevelMain.hs (a way to run the app from GHCi)
+--------------------------------------------------------------
+getApplicationRepl :: IO (Int, App, Application)
+getApplicationRepl = do
+    settings <- getAppSettings
+    foundation <- makeFoundation settings
+    wsettings <- getDevSettings $ warpSettings foundation
+    app1 <- makeApplication foundation
+    return (getPort wsettings, foundation, app1)
+
+shutdownApp :: App -> IO ()
+shutdownApp _ = return ()
+
+
+---------------------------------------------
+-- Functions for use in development with GHCi
+---------------------------------------------
+
+-- | Run a handler
+handler :: Handler a -> IO a
+handler h = getAppSettings >>= makeFoundation >>= flip unsafeHandler h

src/Foundation.hs

+{-# LANGUAGE NoImplicitPrelude #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE TemplateHaskell #-}
+{-# LANGUAGE MultiParamTypeClasses #-}
+{-# LANGUAGE TypeFamilies #-}
+{-# LANGUAGE ViewPatterns #-}
+{-# LANGUAGE InstanceSigs #-}
+
+module Foundation where
+
+import Import.NoFoundation
+import Control.Monad.Logger        (LogSource)
+import Text.Hamlet                 (hamletFile)
+import Text.Jasmine                (minifym)
+import Yesod.Core.Types            (Logger)
+import Yesod.Default.Util          (addStaticContentExternal)
+import qualified Yesod.Core.Unsafe as Unsafe
+import qualified Data.CaseInsensitive as CI
+import qualified Data.Text.Encoding as TE
+
+-- | The foundation datatype for your application. This can be a good place to
+-- keep settings and values requiring initialization before your application
+-- starts running, such as database connections. Every handler will have
+-- access to the data present here.
+data App = App
+    { appSettings    :: AppSettings
+    , appStatic      :: Static -- ^ Settings for static file serving.
+    , appHttpManager :: Manager
+    , appLogger      :: Logger
+    }
+
+data MenuItem = MenuItem
+    { menuItemLabel :: Text
+    , menuItemRoute :: Route App
+    , menuItemAccessCallback :: Bool
+    }
+
+data MenuTypes
+    = NavbarLeft MenuItem
+    | NavbarRight MenuItem
+
+-- This is where we define all of the routes in our application. For a full
+-- explanation of the syntax, please see:
+-- http://www.yesodweb.com/book/routing-and-handlers
+--
+-- Note that this is really half the story; in Application.hs, mkYesodDispatch
+-- generates the rest of the code. Please see the following documentation
+-- for an explanation for this split:
+-- http://www.yesodweb.com/book/scaffolding-and-the-site-template#scaffolding-and-the-site-template_foundation_and_application_modules
+--
+-- This function also generates the following type synonyms:
+-- type Handler = HandlerT App IO
+-- type Widget = WidgetT App IO ()
+mkYesodData "App" $(parseRoutesFile "config/routes")
+
+-- | A convenient synonym for creating forms.
+type Form x = Html -> MForm (HandlerFor App) (FormResult x, Widget)
+
+-- Please see the documentation for the Yesod typeclass. There are a number
+-- of settings which can be configured by overriding methods here.
+instance Yesod App where
+    -- Controls the base of generated URLs. For more information on modifying,
+    -- see: https://github.com/yesodweb/yesod/wiki/Overriding-approot
+    approot :: Approot App
+    approot = ApprootRequest $ \app req ->
+        case appRoot $ appSettings app of
+            Nothing -> getApprootText guessApproot app req
+            Just root -> root