Initial commit

This initial version is purposely extremily limited:
* `GET /ahoy` endpoint, just to check the server is alive
* `GET /items` endpoint, always returns the same item
* `POST items` endpoint, checks and print request payload, no
  persistance
* calling any other route defaults to a 404

.gitignore

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+/target
+/classes
+/checkouts
+profiles.clj
+pom.xml
+pom.xml.asc
+*.jar
+*.class
+/.clj-kondo
+/.lein-*
+/.lsp
+/.nrepl-port
+/.prepl-port

LICENSE

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+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                    Version 2, December 2004
+
+ Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+
+ Everyone is permitted to copy and distribute verbatim or modified
+ copies of this license document, and changing it is allowed as long
+ as the name is changed.
+
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. You just DO WHAT THE FUCK YOU WANT TO.
+

README.md

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+# Yohoho - A take-home assignment for HolidayPirates
+
+This is my take on the take-home assignment I was given for the Backend Engineer
+position at HolidayPirates.
+
+The goal is to implement a very small REST API in Clojure. That API provides two
+endpoints :
+
+* `POST /items`: creates an item
+* `GET /items`: returns the list of items
+
+## Usage
+
+This project uses Leiningen. Assuming you already have Leiningen installed,
+running the API should be as easy as cloning the repo and issuing `lein run`. By
+default, the server listens on port 3000.
+
+## Library choices
+
+* `reitit`: for handling routes
+* `jetty`: web server
+* `muuntaja`: JSON handling
+
+## Documentation links
+
+The following links proved more than useful when working on this assignment:
+
+* <https://practical.li/clojure-web-services/building-api/>
+* <https://github.com/metosin/reitit/blob/master/doc/ring/content_negotiation.md>

project.clj

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+(defproject yohoho "0.1.0-SNAPSHOT"
+  :description "Yo-Ho-Ho, a take home assignment for the brave"
+  :url "https://git.dromaludaire.info/yohoho"
+  :license {:name "WTFPL – Do What the Fuck You Want to Public License"
+            :url "https://www.wtfpl.net/about/"}
+  :dependencies [[org.clojure/clojure "1.12.4"]
+                 [ring/ring-core "1.15.3"]
+                 [ring/ring-jetty-adapter "1.15.3"]
+                 [metosin/reitit "0.10.0"]
+                 [metosin/muuntaja "0.6.11"]]
+  :main ^:skip-aot yohoho.core
+  :target-path "target/%s"
+  :profiles {:uberjar {:aot :all
+                       :jvm-opts ["-Dclojure.compiler.direct-linking=true"]}})

src/yohoho/core.clj

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+(ns yohoho.core
+  (:require [reitit.ring :as ring]
+            [ring.adapter.jetty :as http-server]
+            [reitit.ring.middleware.muuntaja :as muuntaja]
+            [muuntaja.core :as m])
+  (:gen-class))
+
+
+(defn ahoy-handler
+  [_]
+  {:status 200
+   :body "Ahoy mate, the ship be sailin' alright"})
+
+(defn get-items-handler
+  [_]
+  {:status 200
+   :body {:id 1
+          :name "Jack Sparrow"
+          :email "jack.sparrow@triangle.bm"}})
+
+(defn post-items-handler
+  [request]
+  (let [item (:body-params request)
+        id 1
+        name (:name item)
+        email (:email item)]
+    {:status 201
+     :headers {"Location" (str "/item/" id)}
+     :body {:id id, :name name, :email email}}))
+
+
+(def app
+  (ring/ring-handler
+   (ring/router
+    [["/ahoy"  {:get ahoy-handler}]
+     ["/items" {:get get-items-handler
+                :post post-items-handler}]]
+    ;; Use muuntaja middleware to automatically decode JSON
+    {:data {:muuntaja m/instance
+            :middleware [muuntaja/format-middleware]}})
+   ;; Default route: anything not explicitely handled should give a 404
+   (ring/create-default-handler
+    {:not-found (constantly {:status 404
+                             :body {:error "Not Found"}})})))
+
+
+(defn -main
+  "HolidayPirates take-home assignement.
+   Goal: build a (very) small REST API that exposes to endpoints."
+  [& args]
+  (http-server/run-jetty app {:port 3000 :join? false})
+  (println "Ahoy! Yo-ho-ho API running on port 3000"))