(ns bombnet.web.game
  (:require [cljs.core.async :refer [<! >! chan]]
            [bombnet.web.display :refer [render-game]])
  (:require-macros [cljs.core.async.macros :refer [go]]))

(defrecord Game [conn state local])

(defn ^:private send-msg [game & params]
  (let [{conn :conn} @game]
    (bombnet.web.ws/send! conn (apply hash-map (conj params :type)))))

(defn ^:private send-action [game & params]
  (let [action (apply hash-map (conj params :type))]
    (send-msg game "action"
              :action action)
    (swap! game update [:local :action] action)))

(defn action-move [game dir]
  (send-action game "move" :dir dir))

(defn action-bomb [game timer]
  (let [diagonal? (get-in @game [:local :diagonal?])]
    (send-action game "bomb" :timer timer :diagonal? diagonal?)))

(defn action-nop [game]
  (send-action game "nop"))

(defn toggle-diagonal [game]
  (swap! game update-in [:local :diagonal?] not))

(defn msg-handler [game msg]
  (cond
    (:game msg) (do
                  (swap! game assoc :state (:game msg))
                  (render-game game))
    (:message msg) (.log js/console (:message msg))))

(defn key-handler [game code]
  (let [{conn :conn} game
        k (fn [v] (aget js/ROT (str "VK_" v)))
        move (partial action-move game)
        bomb (partial action-bomb game)]
    (condp #(= (k %) %2) code
      "R" (send-msg game "start")
      "X" (toggle-diagonal game)
      "PERIOD" (action-nop game)
      "UP" (move "up")
      "DOWN" (move "down")
      "LEFT" (move "left")
      "RIGHT" (move "right")
      "1" (bomb 1)
      "2" (bomb 2)
      "3" (bomb 3)
      "4" (bomb 4)
      "5" (bomb 5)
      nil)))

(defn init-game [id conn]
  (atom (->Game conn nil {:id id})))