-- Chuchu by Makaron
-- Crates are the main thing so here we go
local Timer = require('deps.knife.timer')

local utils = require('utils')

ITERATIONS_RESOLVE = .01
TIME_TO_RELOAD = .4

local Crates = {
  world = nil,
  player = nil,
  list = { },
  attached = { }
}

local Crate = { }

local curContact = nil

function Crate.new(world, x, y, size)
  local object = { }
  object.size = {
    w = 0,
    h = 0
  }

  if size == 'small' then
    object.size.w, object.size.h = assets.sprites.crates.small:getWidth(), assets.sprites.crates.small:getHeight()
    object.img = assets.sprites.crates.small
  elseif size == 'medium' then
    object.size.w, object.size.h = assets.sprites.crates.medium:getWidth(), assets.sprites.crates.medium:getHeight()
    object.img = assets.sprites.crates.medium
  elseif size == 'large' then
    object.size.w, object.size.h = assets.sprites.crates.large:getWidth(), assets.sprites.crates.large:getHeight()
    object.img = assets.sprites.crates.large
  end

  local center = utils.getCenterByXY(x, y, object.size.w, object.size.h)

  object.collider = world:addRectangle(x, y, object.size.w, object.size.h)
  object.collider:setClass('Crate')
  object.attached = false
  object.contact = { }
  object.joint = nil

  object.collider:setPresolve(function (shape1, shape2, contact)
    if shape2:getClass() == 'Player' and object.attached == false then
      contact:setEnabled(false)
      object.contact.x, object.contact.y = contact:getPositions()
      object.attached = true
      Timer.after(ITERATIONS_RESOLVE, function ()
        object.joint = Crates.world:addJoint('revolute', Crates.player.collider, object.collider, object.contact.x, object.contact.y, true)
        table.insert(Crates.attached, object)
      end)
    end
  end)

  return setmetatable(object, {
     __index = Crate
  })
end

function Crates:init(world, player)
  self.world = world
  self.player = player
end

function Crates:spawn(x, y, size)
  table.insert(self.list, Crate.new(self.world, x, y, size))
end

function Crates:update(dt)
  Timer.update(dt)
end

function Crates:draw()
  local pos = {x = 0, y = 0, r = 0}
  for key in pairs(self.list) do
    pos.x, pos.y = self.list[key].collider:getPosition()
    pos.r = self.list[key].collider:getAngle()
    love.graphics.draw(self.list[key].img, pos.x, pos.y, pos.r, 1, 1, self.list[key].size.w/2, self.list[key].size.h/2)
  end
end

function Crates:getAttached()
  return self.attached
end

function Crates:detach(key)
  self.attached[key].joint._joint:destroy()
  Timer.after(TIME_TO_RELOAD, function ()
    self.attached[key].attached = false
    table.remove(self.attached, key)
  end)
end

return setmetatable(Crates, {
  __call = function(_, ...) return new(...) end
})