package com.datoh.lifekt.desktop

import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application
import com.badlogic.gdx.backends.lwjgl3.Lwjgl3ApplicationConfiguration
import com.badlogic.gdx.Gdx
import com.badlogic.gdx.Screen
import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Graphics
import com.badlogic.gdx.graphics.Color
import com.badlogic.gdx.graphics.GL20
import com.badlogic.gdx.graphics.g2d.Batch
import com.badlogic.gdx.graphics.g2d.SpriteBatch
import com.badlogic.gdx.scenes.scene2d.Stage
import com.badlogic.gdx.utils.viewport.ScreenViewport
import com.badlogic.gdx.utils.viewport.Viewport
import imgui.ImGui
import imgui.destroy
import imgui.impl.LwjglGL3
import ktx.app.KtxGame
import ktx.app.KtxScreen
import ktx.inject.Context
import uno.glfw.GlfwWindow

class Game(private val stage: Stage, private val batch: Batch)
    : KtxScreen {
    override fun render(delta: Float) {
        Gdx.gl.glClearColor(Color.GRAY.r, Color.GRAY.g, Color.GRAY.b, Color.GRAY.a)
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT or GL20.GL_DEPTH_BUFFER_BIT)

        LwjglGL3.newFrame()
        with(ImGui) {
            text("KtxSampleApp")
            render()
        }
    }
}

class Application
    : KtxGame<Screen>() {
    private val context = Context()
    private var contextImGui: imgui.Context? = null

    override fun create() {
        val window = GlfwWindow((Gdx.graphics as Lwjgl3Graphics).window.windowHandle)
        contextImGui = imgui.Context()

        LwjglGL3.init(window, false)

        context.register {
            bindSingleton<Viewport>(ScreenViewport())
            bindSingleton<Batch>(SpriteBatch())
            bindSingleton(Stage(inject(), inject()))
            bindSingleton(this@Application)
            bindSingleton(Game(inject(), inject()))
        }

        addScreen(context.inject<Game>())
        setScreen<Game>()
    }

    override fun dispose() {
        contextImGui?.destroy()
        LwjglGL3.shutdown()
        super.dispose()
    }
}

fun main(args: Array<String>) {
    Lwjgl3Application(Application(), Lwjgl3ApplicationConfiguration().apply {
        setTitle("KtxSampleApp")
        setWindowedMode(800, 600)
        setResizable(false)
    })
}