exupero/madlib.clj

## madlib.clj
#!/usr/bin/env bb

(require '[babashka.deps :as deps])
(deps/add-deps '{:deps {org.clojars.askonomm/ruuter {:mvn/version "1.3.2"}}})

(require '[clojure.java.browse :as browse]
         '[clojure.string :as str]
         '[cheshire.core :as json]
         '[org.httpkit.server :as srv]
         '[ruuter.core :as ruuter]
         '[hiccup.core :as h])
(import '[java.net URLDecoder])

(defn re-map [re f s & ss]
  (remove #{"" ::padding}
    (interleave
      (str/split s re)
      (concat (apply map f (re-seq re s) ss) [::padding]))))

(defn render [dom & [status]]
  {:status (or status 200)
   :body (h/html dom)})

(def style
  "body {max-width: 800px; margin: 0 auto}
  body, textarea {font-size: 18pt; line-height: 1.5; font-family: 'PT Sans'}
  section {margin-bottom: 2rem; display: flex}
  ol {padding: 0 0 0 2.5rem; margin: 0 2rem 0 0}
  strong {color: red}")

(defn template [dom]
  (list
    "<!DOCTYPE html>"
    (h/html
      [:head
       [:meta {:charset "UTF-8"}]
       [:meta {:content "width=device-width, initial-scale=1" :name "viewport"}]
       [:title "Wish Lab Mad Lib"]
       [:script {:src "https://unpkg.com/htmx.org@1.5.0/dist/htmx.min.js" :defer true}]
       [:script {:src "https://unpkg.com/htmx.org@1.5.0/dist/ext/json-enc.js" :defer true}]
       [:style {:type "text/css"} style]]
      [:body
       dom])))

(defn wordlist [s]
  (map second (re-seq #"\[([^\]]+)\]" s)))

(defn selections []
  [:textarea
   {:name :selections
    :hx-post "/madlib"
    :hx-target "#madlib"
    :hx-ext "json-enc"}])

(defn word-count [s]
  (let [c (count (re-seq #"\[[^\[]+\]|[A-Za-z'-]+" s))]
    [:em "(" c " words)"]))

(defn madlib-content
  ([s] (madlib-content s nil))
  ([s words]
   [:div
    (-> s
        (str/replace #"___" "")
        (as-> $ (re-map #"\[[^\[]+\]"
                        #(do [:strong (or %2 %1)])
                        $
                        (concat words (repeat nil)))))]))

(defn index [script-file _]
  (let [s (slurp script-file)]
    (render
      (template
        [:div
         [:section
          [:ol
           (for [word (wordlist s)]
             [:li word])]
          (selections)]
         [:section
          [:div
           (word-count s)
           [:br]
           [:div#madlib
            (madlib-content s)]]]]))))

(defn madlib [script-file {:keys [body]}]
  (let [s (slurp script-file)
        {:keys [selections]} (json/parse-string (slurp body) true)
        words (map str/trim (str/split-lines selections))]
    (render
      (madlib-content s words))))

(defn routes [script-file]
  [{:path "/"
    :method :get
    :response (partial index script-file)}
   {:path "/madlib"
    :method :post
    :response (partial madlib script-file)}])

(defonce server (atom nil))

(defn start-server [port routes]
  (when-let [s @server]
    (s :timeout 100)
    (reset! server nil))
  (let [s (srv/run-server #(ruuter/route (routes) %) {:port port})]
    (reset! server s)))

(when (= *file* (System/getProperty "babashka.file"))
  (let [[script-file] *command-line-args*
        port 9999
        url (str "http://localhost:" port "/")]
    (start-server port #(routes script-file))
    (println "serving" url)
    (browse/browse-url url)
    @(promise)))
	#!/usr/bin/env bb

	(require '[babashka.deps :as deps])
	(deps/add-deps '{:deps {org.clojars.askonomm/ruuter {:mvn/version "1.3.2"}}})

	(require '[clojure.java.browse :as browse]
	'[clojure.string :as str]
	'[cheshire.core :as json]
	'[org.httpkit.server :as srv]
	'[ruuter.core :as ruuter]
	'[hiccup.core :as h])
	(import '[java.net URLDecoder])

	(defn re-map [re f s & ss]
	(remove #{"" ::padding}
	(interleave
	(str/split s re)
	(concat (apply map f (re-seq re s) ss) [::padding]))))

	(defn render [dom & [status]]
	{:status (or status 200)
	:body (h/html dom)})

	(def style
	"body {max-width: 800px; margin: 0 auto}
	body, textarea {font-size: 18pt; line-height: 1.5; font-family: 'PT Sans'}
	section {margin-bottom: 2rem; display: flex}
	ol {padding: 0 0 0 2.5rem; margin: 0 2rem 0 0}
	strong {color: red}")

	(defn template [dom]
	(list
	"<!DOCTYPE html>"
	(h/html
	[:head
	[:meta {:charset "UTF-8"}]
	[:meta {:content "width=device-width, initial-scale=1" :name "viewport"}]
	[:title "Wish Lab Mad Lib"]
	[:script {:src "https://unpkg.com/htmx.org@1.5.0/dist/htmx.min.js" :defer true}]
	[:script {:src "https://unpkg.com/htmx.org@1.5.0/dist/ext/json-enc.js" :defer true}]
	[:style {:type "text/css"} style]]
	[:body
	dom])))

	(defn wordlist [s]
	(map second (re-seq #"\[([^\]]+)\]" s)))

	(defn selections []
	[:textarea
	{:name :selections
	:hx-post "/madlib"
	:hx-target "#madlib"
	:hx-ext "json-enc"}])

	(defn word-count [s]
	(let [c (count (re-seq #"\[[^\[]+\]\|[A-Za-z'-]+" s))]
	[:em "(" c " words)"]))

	(defn madlib-content
	([s] (madlib-content s nil))
	([s words]
	[:div
	(-> s
	(str/replace #"___" "")
	(as-> $ (re-map #"\[[^\[]+\]"
	#(do [:strong (or %2 %1)])
	$
	(concat words (repeat nil)))))]))

	(defn index [script-file _]
	(let [s (slurp script-file)]
	(render
	(template
	[:div
	[:section
	[:ol
	(for [word (wordlist s)]
	[:li word])]
	(selections)]
	[:section
	[:div
	(word-count s)
	[:br]
	[:div#madlib
	(madlib-content s)]]]]))))

	(defn madlib [script-file {:keys [body]}]
	(let [s (slurp script-file)
	{:keys [selections]} (json/parse-string (slurp body) true)
	words (map str/trim (str/split-lines selections))]
	(render
	(madlib-content s words))))

	(defn routes [script-file]
	[{:path "/"
	:method :get
	:response (partial index script-file)}
	{:path "/madlib"
	:method :post
	:response (partial madlib script-file)}])

	(defonce server (atom nil))

	(defn start-server [port routes]
	(when-let [s @server]
	(s :timeout 100)
	(reset! server nil))
	(let [s (srv/run-server #(ruuter/route (routes) %) {:port port})]
	(reset! server s)))

	(when (= file (System/getProperty "babashka.file"))
	(let [[script-file] command-line-args
	port 9999
	url (str "http://localhost:" port "/")]
	(start-server port #(routes script-file))
	(println "serving" url)
	(browse/browse-url url)
	@(promise)))