diff --git a/19-applying-structure/shawty-prime/LICENSE b/19-applying-structure/shawty-prime/LICENSE
new file mode 100644
index 0000000..5728243
--- /dev/null
+++ b/19-applying-structure/shawty-prime/LICENSE
@@ -0,0 +1,30 @@
+Copyright Chris Allen (c) 2015
+
+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 Chris Allen 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.
\ No newline at end of file
diff --git a/19-applying-structure/shawty-prime/Setup.hs b/19-applying-structure/shawty-prime/Setup.hs
new file mode 100644
index 0000000..9a994af
--- /dev/null
+++ b/19-applying-structure/shawty-prime/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/19-applying-structure/shawty-prime/app/Main.hs b/19-applying-structure/shawty-prime/app/Main.hs
new file mode 100644
index 0000000..c43e302
--- /dev/null
+++ b/19-applying-structure/shawty-prime/app/Main.hs
@@ -0,0 +1,104 @@
+{-# LANGUAGE OverloadedStrings #-}
+
+module Main where
+
+import Control.Monad (replicateM)
+import Control.Monad.IO.Class (liftIO)
+import qualified Data.ByteString.Char8 as BC
+import Data.Text.Encoding (decodeUtf8, encodeUtf8)
+import qualified Data.Text.Lazy as TL
+import qualified Database.Redis as R
+import Network.URI (URI, parseURI)
+import qualified System.Random as SR
+import Web.Scotty
+
+alphaNum :: String
+alphaNum = ['A'..'Z'] ++ ['0'..'9']
+
+randomElement :: String -> IO Char
+randomElement xs = do
+ let maxIndex :: Int
+ maxIndex = length xs - 1
+ -- Right of arrow is IO Int, so randomDigit is Int
+ randomDigit <- SR.randomRIO (0, maxIndex) :: IO Int
+ return (xs !! randomDigit)
+
+shortyGen :: IO String
+shortyGen =
+ replicateM 7 (randomElement alphaNum)
+
+saveURI :: R.Connection
+ -> BC.ByteString
+ -> BC.ByteString
+ -> IO (Either R.Reply R.Status)
+saveURI conn shortURI uri =
+ R.runRedis conn $ R.set shortURI uri
+
+getURI :: R.Connection
+ -> BC.ByteString
+ -> IO (Either R.Reply (Maybe BC.ByteString))
+getURI conn shortURI = R.runRedis conn $ R.get shortURI
+
+linkShorty :: String -> String
+linkShorty shorty =
+ concat [ "Copy and paste your short URL"
+ ]
+
+shortyCreated :: Show a => a -> String -> TL.Text
+shortyCreated resp shawty =
+ TL.concat [ TL.pack (show resp)
+ , " shorty is: ", TL.pack (linkShorty shawty)
+ ]
+
+shortyAintUri :: TL.Text -> TL.Text
+shortyAintUri uri =
+ TL.concat [ uri
+ , " wasn't a url, did you forget http://?"
+ ]
+
+shortyFound :: TL.Text -> TL.Text
+shortyFound tbs =
+ TL.concat ["", tbs, ""]
+
+app :: R.Connection
+ -> ScottyM ()
+app rConn = do
+ get "/" $ do
+ uri <- param "uri"
+ let parsedUri :: Maybe URI
+ parsedUri = parseURI (TL.unpack uri)
+ case parsedUri of
+ Just _ -> do
+ shawty <- liftIO shortyGen
+ let shorty = BC.pack shawty
+ uri' = encodeUtf8 (TL.toStrict uri)
+ -- **** Excercise ****
+ -- Check if it already exists
+ uri'' <- liftIO (getURI rConn shorty)
+ case uri'' of
+ Left reply -> text (TL.pack (show reply))
+ Right mbBS -> case mbBS of
+ Nothing -> do
+ -- It doesn't so save it
+ resp <- liftIO (saveURI rConn shorty uri')
+ html (shortyCreated resp shawty)
+ Just _ -> text "Duplicate short uri created."
+ -- **** End of Exercise ****
+ Nothing -> text (shortyAintUri uri)
+ get "/:short" $ do
+ short <- param "short"
+ uri <- liftIO (getURI rConn short)
+ case uri of
+ Left reply -> text (TL.pack (show reply))
+ Right mbBS -> case mbBS of
+ Nothing -> text "uri not found"
+ Just bs -> html (shortyFound tbs)
+ where tbs :: TL.Text
+ tbs = TL.fromStrict (decodeUtf8 bs)
+
+main :: IO ()
+main = do
+ rConn <- R.connect R.defaultConnectInfo
+ scotty 3000 (app rConn)
diff --git a/19-applying-structure/shawty-prime/shawty.cabal b/19-applying-structure/shawty-prime/shawty.cabal
new file mode 100644
index 0000000..44ff1ef
--- /dev/null
+++ b/19-applying-structure/shawty-prime/shawty.cabal
@@ -0,0 +1,33 @@
+name: shawty
+version: 0.1.0.0
+synopsis: Initial project template from stack
+description: Please see README.md
+homepage: http://github.com/bitemyapp/shawty#readme
+license: BSD3
+license-file: LICENSE
+author: Chris Allen
+maintainer: cma@bitemyapp.com
+copyright: 2015, Chris Allen
+category: Web
+build-type: Simple
+cabal-version: >=1.10
+
+executable shawty
+ hs-source-dirs: app
+ main-is: Main.hs
+ ghc-options: -threaded -rtsopts -with-rtsopts=-N
+ build-depends: base
+ , bytestring
+ , hedis
+ , mtl
+ , network-uri
+ , random
+ , scotty
+ , semigroups
+ , text
+ , transformers
+ default-language: Haskell2010
+
+source-repository head
+ type: git
+ location: https://github.com/bitemyapp/shawty-prime
diff --git a/19-applying-structure/shawty-prime/stack.yaml b/19-applying-structure/shawty-prime/stack.yaml
new file mode 100644
index 0000000..2e43058
--- /dev/null
+++ b/19-applying-structure/shawty-prime/stack.yaml
@@ -0,0 +1,32 @@
+# For more information, see: https://github.com/commercialhaskell/stack/blob/release/doc/yaml_configuration.md
+
+# Specifies the GHC version and set of packages available (e.g., lts-3.5, nightly-2015-09-21, ghc-7.10.2)
+resolver: lts-3.7
+
+# Local packages, usually specified by relative directory name
+packages:
+- '.'
+
+# Packages to be pulled from upstream that are not in the resolver (e.g., acme-missiles-0.3)
+extra-deps: []
+
+# 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: >= 0.1.4.0
+
+# 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]