local state = require("modules.states.playstate")

local myMath = require("modules.math")
local myTypes = require("modules.types")
local files = require("modules.files")
local json = require("modules.json")
local logging = require("modules.logging")

local songs = require("charts.songs")

local curSong = songs[1]
local curIndex = 1
local evilCurIndex = 1
local curDiffList = songs[1].difficulties

local curDiff = songs[1].difficulties[1]
local curDiffInd = 1

local curState = nil
local stateLoaded = false

local pressed = {false,false,false}

local bg
local logo
local gf
local freaky = love.audio.newSource("sounds/freakyMenu.ogg", "stream")

local left

local function setup()
  bg = myTypes.Image("images/menuBG.png", 0)
  bg.ui = false
  bg.layer = -10
  
  gf = myTypes.Sprite("sprites/gfDanceTitle.png", "sprites/gfDanceTitle.json")
  gf:PlayAnimation("gfDance", 24, true)
  gf.position = myTypes.Vector2(340, 60)
  for index, rect in next, gf.quads.gfDance do
    rect.resize = myTypes.Vector2(0.7,.7)
  end
  gf.layer = 3

  left = myTypes.Image("images/MenuLeft.png")
  left.layer = 0
  left.resize = myTypes.Vector2(3, 1)

  local arrow = myTypes.Image("images/eventArrow.png")
  arrow.position.y = 330
  arrow.layer = 1
  arrow.resize = myTypes.Vector2(.5,.5)

  freaky:play()
end

local font = love.graphics.newFont("fonts/FridayNightFunkin-Regular.ttf", 40)

local gettingKey

local settings = json.parse(files.read_file("settings.json"))
local keybinds = settings.Keybinds
local scroll = love.audio.newSource("sounds/ui/scrollMenu.ogg", "static")
local confirm = love.audio.newSource("sounds/ui/confirmMenu.ogg", "static")

function love.update(dt)
  if curState and curState.loaded then
    if stateLoaded then
      curState.update(dt)
    else
      stateLoaded = true -- skipping this update frame
      curState.finish()
    end
  elseif not curState then
    myTypes.render.cameraTarget = myTypes.Vector2(0,0)
    myTypes.updateSprites(dt)
  end
end

function love.draw()
  if curState and stateLoaded then
    curState.draw()
  else

    myTypes.drawSprites()

    evilCurIndex = myMath.lerp(evilCurIndex, curIndex, .3)

    for index, song in next, songs do
      love.graphics.print({{0,0,0}, song.name}, font, 300, love.graphics:getHeight()/2 + (50 * (index - evilCurIndex - .7)), 0, 1, 1, 200)
    end

    love.graphics.print({{0,0,0}, curDiff}, font, 600, 660)

    love.graphics.print(
      {{0,0,0}, string.format("Left: %s, Down: %s, Up: %s, Right: %s \nDownscroll: %s", 
      keybinds[1],
      keybinds[2],
      keybinds[3],
      keybinds[4],
      settings.Downscroll
    )})
    love.graphics.print({{0,0,0}, "Press 1 to change LEFT \nPress 2 to change DOWN \nPress 3 to change UP \nPress 4 to change RIGHT \nPress 0 to toggle DOWNSCROLL"}, 500, 0)
  end
end

function run()
  myTypes.destroyAllSprites()
  freaky:stop()

  curState = state(curSong.name, curDiff)

  curState.quit = function()
    curState = nil
    stateLoaded = false
    myTypes.destroyAllSprites()
  setup()
  end
  curState.restart = function()
    curState = nil
    stateLoaded = false
    myTypes.destroyAllSprites()
    
    run()
  end
  curState.load()
end

function love.keypressed(key, un, is)
    if curState and stateLoaded then
      curState.keypressed(key, un, is)
    elseif not curState then
      if not gettingKey then
        if key == "return" then
          run()
        elseif key == "down" then
          curIndex, curSong = next(songs, curIndex)
          if not curSong then
            curIndex, curSong = next(songs)
            curDiffList = curSong.difficulties
          else
            curDiffList = curSong.difficulties
          end
          curDiffInd = 1
          curDiff = curDiffList[1]
          scroll:stop()
          scroll:play()
        elseif key == "up" then --the solution was so stupid easy
          if songs[curIndex - 1] then
            curSong = songs[curIndex - 1]
            curDiffList = songs[curIndex - 1].difficulties
            curDiffInd = 1
            curDiff = curDiffList[curDiffInd]
            curIndex = curIndex - 1
          else
            curSong = songs[#songs]
            curIndex = #songs
            curDiffList = songs[curIndex].difficulties
            curDiffInd = 1
            curDiff = curDiffList[curDiffInd]
          end
          curDiffInd = 1
          curDiff = curDiffList[1]
          scroll:stop()
          scroll:play()
        elseif key == "right" then
          if curDiffList[curDiffInd + 1] then
            curDiff = curDiffList[curDiffInd + 1]
            curDiffInd = curDiffInd + 1
          else
            curDiff = curDiffList[1]
            curDiffInd = 1
          end
          scroll:stop()
          scroll:play()
        elseif key == "left" then
          if curDiffList[curDiffInd - 1] then
            curDiff = curDiffList[curDiffInd - 1]
            curDiffInd = curDiffInd - 1
          else
            curDiff = curDiffList[#curDiffList]
            curDiffInd = #curDiffList
          end
          scroll:stop()
          scroll:play()
        elseif tonumber(key) and tonumber(key) < 5 then
          if key == "0" then
            settings.Downscroll = not settings.Downscroll
            files.write_file("settings.json", json.stringify(settings))
          else
            gettingKey = tonumber(key)
          end
        end
      else
        keybinds[gettingKey] = key
        gettingKey = nil

        files.write_file("settings.json", json.stringify(settings))

        confirm:stop()
        confirm:play()
      end
    end
end

love.window.setMode(1280, 720, { fullscreen = false , resizable = true})

setup()