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

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)
  local object = {
    collider = world:addRectangle(x, y, 20, 20)
  }
  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)
  table.insert(self.list, Crate.new(self.world, x, y))
end

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