local Animator = require "animator"
local Atlas = require "atlas"
local Font = require "font"
local MultiMenu = require "multimenu"
local NineSlice = require "nine_slice"
local Units = require "units"
local push = require "lib/push"

local gameWidth, gameHeight = 480, 360
local windowWidth, windowHeight = love.window.getDesktopDimensions()
windowWidth, windowHeight = windowWidth * .7, windowHeight * .7 --make the window a bit smaller than the screen itself
local pushOpts = {
  fullscreen = false,
  resizable = true,
}

push:setupScreen(gameWidth, gameHeight, windowWidth, windowHeight, pushOpts)

function love.load()
  local blockFontChars = {
    " ", "!", "\"", "#", "$", "%", "&", "'", "(", ")", "×", "+", ",", "-", ".", "/", --first line
    "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", ":", ";", "<", "=", ">", "?",  --second line
    "@", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o",  --third line
    "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "[", "\\", "]", "^", "_", --fourth line
    "@", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O",  --third line
    "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "{", "|", "}", "~",       --fourth line
  }

  BlockyFont = Font("assets/small-blocky-font.png", 8, 8, blockFontChars)

  local uiAtlas = Atlas("assets/flat-ui.png", 32, 32)

  Window = NineSlice(uiAtlas, {
    tl = 26,
    top = 27,
    tr = 28,
    left = 50,
    center = 51,
    right = 52,
    bl = 74,
    bottom = 75,
    br = 76,
  })

  local options = {}

  for idx, unit in ipairs(Units) do
    local state_menu = {}

    for name, state in pairs(unit.states) do
      state_menu[#state_menu + 1] = {
        text = name,
        callback = function() ActiveUnit:setState(name) end
      }
    end

    options[#options + 1] = {
      text = unit.name,
      callback = function()
        StateMenu = MultiMenu(BlockyFont, state_menu, 32, 32, Window)
      end,
    }
  end

  UnitMenu = MultiMenu(BlockyFont, options, 16, 16, Window)
  ActiveUnit = Animator(Units[1].states, "idle")
end

function love.draw()
  push:start()

  BlockyFont:draw("Hello, world!")
  ActiveUnit:draw(240, 180)
  UnitMenu:draw()

  if StateMenu then
    StateMenu:draw()
  end

  push:finish()
end

function love.update(dt)
  ActiveUnit:update(dt)
end

function love.keypressed(key)
  local menu

  if StateMenu then
    menu = StateMenu
  else
    menu = UnitMenu
  end

  local changed = false
  if key == "up" then
    menu:up()
    changed = true
  elseif key == "down" then
    menu:down()
    changed = true
  elseif key == "space" then
    menu:select()
  elseif key == "escape" then
    StateMenu = nil
  end

  if changed and not StateMenu then
    ActiveUnit = Animator(Units[UnitMenu.selected].states, "idle")
  end
end

function love.resize(w, h)
  return push:resize(w, h)
end