(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 2.0
                         :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 2.0
                         :finish then
                         :ease tween/ease-in-quadratic)))

(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 [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)
                   :poslogo  (assoc (utils/get-texture "pos.png") :x 640 :y 480 :scale-x 2 :scale-y 2 :origin-x 145 :origin-y 64 :z 1 :opacity 0.0) 
                   :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] 2.0) entities :dbhlogo
                          (fn [entities] 
                            (fade-in (assoc-in screen [:total-time] 4.0) entities :poslogo
                                     (fn [entities]
                                       (fade-out (assoc-in screen [:total-time] 6.0) entities :poslogo
                                                 (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))]
      (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))