Adds create user handler.

package-lock.json

@@ -18,11 +18,33 @@
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+      "version": "1.18.0",
+      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.18.0.tgz",
+      "integrity": "sha1-07Ik1Gf6LOjUNYnAJFBDJnwJNjQ=",
+      "requires": {
+        "bytes": "3.0.0",
+        "content-type": "1.0.2",
+        "debug": "2.6.8",
+        "depd": "1.1.1",
+        "http-errors": "1.6.2",
+        "iconv-lite": "0.4.18",
+        "on-finished": "2.3.0",
+        "qs": "6.5.0",
+        "raw-body": "2.3.1",
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+      "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.0.0.tgz",
+      "integrity": "sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg="
+    },
     "content-disposition": {
       "version": "0.5.2",
       "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.2.tgz",
@@ -156,6 +178,11 @@
         "statuses": "1.3.1"
       }
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+    "iconv-lite": {
+      "version": "0.4.18",
+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.18.tgz",
+      "integrity": "sha512-sr1ZQph3UwHTR0XftSbK85OvBbxe/abLGzEnPENCQwmHf7sck8Oyu4ob3LgBxWWxRoM+QszeUyl7jbqapu2TqA=="
+    },
     "inherits": {
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       "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
@@ -326,6 +353,17 @@
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       "integrity": "sha1-9JvmtIeJTdxA3MlKMi9hEJLgDV4="
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+    "raw-body": {
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.3.1.tgz",
+      "integrity": "sha512-sxkd1uqaSj41SG5Vet9sNAxBMCMsmZ3LVhRkDlK8SbCpelTUB7JiMGHG70AZS6cFiCRgfNQhU2eLnTHYRFf7LA==",
+      "requires": {
+        "bytes": "3.0.0",
+        "http-errors": "1.6.2",
+        "iconv-lite": "0.4.18",
+        "unpipe": "1.0.0"
+      }
+    },
     "semver": {
       "version": "4.3.2",
       "resolved": "https://registry.npmjs.org/semver/-/semver-4.3.2.tgz",

package.json

@@ -13,6 +13,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
+    "body-parser": "^1.18.0",
     "express": "^4.15.4",
     "pg": "^6.4.0"
   }

src/SimpleService/Handler.purs

@@ -3,14 +3,18 @@ module SimpleService.Handler where
 import Prelude
 
 import Control.Monad.Aff.Class (liftAff)
+import Data.Either (Either(..))
+import Data.Foldable (intercalate)
+import Data.Foreign (renderForeignError)
 import Data.Foreign.Class (encode)
 import Data.Int (fromString)
 import Data.Maybe (Maybe(..))
 import Database.PostgreSQL as PG
 import Node.Express.Handler (Handler)
-import Node.Express.Request (getRouteParam)
-import Node.Express.Response (sendJson, setStatus)
+import Node.Express.Request (getBody, getRouteParam)
+import Node.Express.Response (end, sendJson, setStatus)
 import SimpleServer.Persistence as P
+import SimpleServer.Types (User(..))
 
 getUser :: forall eff. PG.Pool -> Handler (postgreSQL :: PG.POSTGRESQL | eff)
 getUser pool = getRouteParam "id" >>= case _ of
@@ -34,10 +38,27 @@ deleteUser pool = getRouteParam "id" >>= case _ of
             P.deleteUser conn userId
             pure true
       if found
-        then respond 204 {}
+        then respondNoContent 204
         else respond 404 { error: "User not found with id: " <> sUserId }
 
+createUser :: forall eff. PG.Pool -> Handler (postgreSQL :: PG.POSTGRESQL | eff)
+createUser pool = getBody >>= case _ of
+  Left errs -> respond 422 { error: intercalate ", " $ map renderForeignError errs}
+  Right u@(User user) ->
+    if user.id <= 0
+      then respond 422 { error: "User ID must be more than 0: " <> show user.id}
+      else if user.name == ""
+        then respond 422 { error: "User name must not be empty" }
+        else do
+          liftAff (PG.withConnection pool $ flip P.insertUser u)
+          respondNoContent 201
+
 respond :: forall eff a. Int -> a -> Handler eff
 respond status body = do
   setStatus status
   sendJson body
+
+respondNoContent :: forall eff a. Int -> Handler eff
+respondNoContent status = do
+  setStatus status
+  end

src/SimpleService/Middleware/BodyParser.js

@@ -0,0 +1,7 @@
+"use strict";
+
+var bodyParser = require("body-parser");
+
+exports.jsonBodyParser = bodyParser.json({
+  limit: "5mb"
+});

src/SimpleService/Middleware/BodyParser.purs

@@ -0,0 +1,7 @@
+module SimpleService.Middleware.BodyParser where
+
+import Prelude
+import Data.Function.Uncurried (Fn3)
+import Node.Express.Types (ExpressM, Response, Request)
+
+foreign import jsonBodyParser :: forall e. Fn3 Request Response (ExpressM e Unit) (ExpressM e Unit)

src/SimpleService/Server.purs

@@ -8,14 +8,18 @@ import Control.Monad.Eff.Class (liftEff)
 import Control.Monad.Eff.Console (CONSOLE, log, logShow)
 import Control.Monad.Eff.Exception (catchException)
 import Database.PostgreSQL as PG
-import Node.Express.App (App, delete, get, listenHttp)
+import Node.Express.App (App, delete, get, listenHttp, post, useExternal)
 import Node.Express.Types (EXPRESS)
-import SimpleService.Handler (deleteUser, getUser)
+import SimpleService.Handler (createUser, deleteUser, getUser)
+import SimpleService.Middleware.BodyParser (jsonBodyParser)
 
 app :: forall eff. PG.Pool -> App (postgreSQL :: PG.POSTGRESQL | eff)
 app pool = do
+  useExternal jsonBodyParser
+
   get "/v1/user/:id" $ getUser pool
   delete "/v1/user/:id" $ deleteUser pool
+  post "/v1/users" $ createUser pool
 
 runServer :: forall eff.
              Int