(ns advent.screens.splash
  (:require [clojure.string :as str]
            [play-clj.core :refer :all]
            [play-clj.math :refer :all]
            [play-clj.ui :refer :all]
            [play-clj.utils :refer :all]
            [play-clj.g2d :refer :all]
            [advent.utils :as utils]
            [clojure.tools.logging :as log]
            [advent.saves :as saves]
            [advent.tween :as tween]
            [advent.steam :as steam]
            [advent.screens.title :as title]
            )
  (:import [com.badlogic.gdx.graphics Pixmap Pixmap$Filter Texture Texture$TextureFilter Color]
           [com.badlogic.gdx.graphics.g2d TextureRegion]
           [play_clj.entities NinePatchEntity]
           [com.badlogic.gdx.utils.viewport FitViewport]
           [com.badlogic.gdx.scenes.scene2d.ui Slider$SliderStyle Widget ButtonGroup TextButton$TextButtonStyle CheckBox$CheckBoxStyle CheckBox Button]
           [com.badlogic.gdx.scenes.scene2d Group Actor]
           [play_clj.entities ActorEntity]
           [com.badlogic.gdx.scenes.scene2d.utils Align NinePatchDrawable TextureRegionDrawable]
           [com.badlogic.gdx Application Audio Files Game Gdx Graphics Input
            InputMultiplexer InputProcessor Net Preferences Screen]))

(defn fade-in [screen e thing then]
  (assoc-in e [:tweens :fade-in]
            (tween/tween :fade-in screen [thing :opacity] 0.0 1.0 5.0
                         :finish then
                         :ease tween/ease-in-quadratic)))

(defn fade-out [screen e thing then]
  (assoc-in e [:tweens :fade-out]
            (tween/tween :fade-out screen [thing :opacity] 1.0 0.0 5.0
                         :finish then
                         :ease tween/ease-in-quadratic)))

(defn get-texture [path]
  (let [atlas-name (str/replace path #".png" "")
        atlas (texture-atlas "packed-pop-logo/pack.atlas")]
    (texture (texture-atlas! atlas :find-region atlas-name))))

(defn make-anim-seq [file [w h] speed frames]
  (animation speed (map #(get-texture (str file "_" (inc %) ".png")) frames)))

(defn animate [entity screen]
  (if (:anim entity)
    (merge entity (animation->texture (update-in screen [:total-time] #(- (or % 0) (:anim-start entity 0))) (:anim entity)))
    entity))


(defscreen splash-screen
  :on-show
  (fn [screen entities]
   (utils/setup-viewport screen 1280 960) 
   (log/info "Starting splash screen.")
   
   (input! :set-cursor-image (utils/cursor "cursor.png" :hourglass) 0 0)
   
   (let [screen (assoc screen :total-time 0)
         pop-anim (make-anim-seq "POPPixelLogo_02" [320 240] 0.05 (range 200)) 
         entities {:background (assoc (utils/get-texture "black.png")
                                 :scale-x 80
                                 :scale-y 80 
                                 :opacity 1.0
                                 :origin-x 0
                                 :origin-y 0
                                 :z 0)
                   :pop-logo (assoc (animation->texture screen pop-anim)
                               :main-anim pop-anim
                               :x 0 :y 0
                               :origin-x 0 :origin-y 0
                               :scale-x 4 :scale-y 4
                               :z 1)
                   :dbhlogo  (assoc (utils/get-texture "dbh.png") :x 0 :y 0 :origin-x 0 :origin-y 0 :z 1 :opacity 0.0)}]
     (fade-in screen entities :dbhlogo
              (fn [entities]
                (fade-out (assoc-in screen [:total-time] 5.0) entities :dbhlogo
                          (fn [entities] 
                            (as-> entities entities
                                  (assoc-in entities [:pop-logo :anim-start ] 10.0)
                                  (assoc-in entities [:pop-logo :anim] (get-in entities [:pop-logo :main-anim]))
                                  (fade-in (assoc-in screen [:total-time] 10.0) entities :pop-logo
                                           (fn [entities]
                                             (fade-out (assoc-in screen [:total-time] 15.0) entities :pop-logo
                                                       (fn [entities]
                                                         (set-screen! @(resolve 'advent.core/advent) title/title-screen)
                                                         entities)))))))))))
  

  :on-render
  (fn [{:keys [^FitViewport viewport] :as screen} [entities]]
    (steam/update)
    (.apply viewport)
    (clear!)
    (let [entities (utils/apply-tweens screen entities (:tweens entities))
          entities (update-in entities [:pop-logo] animate  screen)]
      (render! screen (sort-by :z (filter :object (vals entities))) )
      entities))

  :show-screen (fn [entities]
                 entities)
  
  :on-key-up
  (fn [screen entities]
    (when (= (key-code :escape) (:key screen))
      (utils/toggle-fullscreen!))
    nil)

  :on-resize (fn [{:keys [viewport width height]} [entities]]
               (.update viewport width height false)
               nil))