(ns snippets-test
  (:require [cheshire.core :as cheshire]
            [clojure.string :as str]
            [clojure.test :refer [deftest is]]
            [com.biffweb :as biff :refer [test-xtdb-node]]
            [snippets :as main]
            [snippets.app :as app]
            [malli.generator :as mg]
            [rum.core :as rum]
            [xtdb.api :as xt]))

(deftest example-test
  (is (= 4 (+ 2 2))))

(defn get-context [node]
  {:biff.xtdb/node  node
   :biff/db         (xt/db node)
   :biff/malli-opts #'main/malli-opts})

(deftest send-message-test
  (with-open [node (test-xtdb-node [])]
    (let [message (mg/generate :string)
          user    (mg/generate :user main/malli-opts)
          ctx     (assoc (get-context node) :session {:uid (:xt/id user)})
          _       (app/send-message ctx {:text (cheshire/generate-string {:text message})})
          db      (xt/db node) ; get a fresh db value so it contains any transactions
                               ; that send-message submitted.
          doc     (biff/lookup db :msg/text message)]
      (is (some? doc))
      (is (= (:msg/user doc) (:xt/id user))))))

(deftest chat-test
  (let [n-messages (+ 3 (rand-int 10))
        now        (java.util.Date.)
        messages   (for [doc (mg/sample :msg (assoc main/malli-opts :size n-messages))]
                     (assoc doc :msg/sent-at now))]
    (with-open [node (test-xtdb-node messages)]
      (let [response (app/chat {:biff/db (xt/db node)})
            html     (rum/render-html response)]
        (is (str/includes? html "Messages sent in the past 10 minutes:"))
        (is (not (str/includes? html "No messages yet.")))
        ;; If you add Jsoup to your dependencies, you can use DOM selectors instead of just regexes:
        ;(is (= n-messages (count (.select (Jsoup/parse html) "#messages > *"))))
        (is (= n-messages (count (re-seq #"init send newMessage to #message-header" html))))
        (is (every? #(str/includes? html (:msg/text %)) messages))))))