-- Chuchu by Makaron
Boipus = require('deps.boipushy')
Physics = require('deps.physics')
assets = require('deps.cargo').init('data')

-- my own libs
crates = require('crate')

local CONST_GRAVITY = 512
local CONST_SIDES = {
  LEFT = {
    10, 10, 200, 10, 200, 500, 10, 500
  },
  RIGHT = {
    310, 10, 502, 10, 502, 502, 310, 502
  },
  WIDTH = 190
}

local player = {
  maxSpeed = {
    x = 100,
    y = 100
  }
}

local magnet = {
  w = 50,
  h = 50,
  collider = nil,
  side = 'LEFT'
}

local side = {
  left = nil,
  right = nil
}

local velocity = {0, 0}
local current = { }

local tempAttached = nil

function love.load()
  love.window.setMode(512, 512)

  world = Physics(0, 0)
  world:addClass('Player')
  world:addClass('Side')
  world:addClass('Crate')
  side.left = world:addChain(true, CONST_SIDES.LEFT):setClass('Side')
  side.right = world:addChain(true, CONST_SIDES.RIGHT):setClass('Side')
  magnet.collider = world:addRectangle(50, 50, magnet.w, magnet.h):setClass('Player')
  magnet.collider:setRestitution(0)

  input = Boipus()
  -- Controls
  -- Keyboard and mouse
  input:bind(love.keyboard.getKeyFromScancode('w'), 'moveUp')
  input:bind(love.keyboard.getKeyFromScancode('a'), 'moveLeft')
  input:bind(love.keyboard.getKeyFromScancode('d'), 'moveRight')
  input:bind(love.keyboard.getKeyFromScancode('s'), 'moveDown')
  input:bind(love.keyboard.getKeyFromScancode('space'), 'switch')

  crates:init(world, magnet)
  crates:spawn(120, 400)
  crates:spawn(150, 400)

  -- Gamepad
  --[[input:bind('dpup', 'moveUp')
  input:bind('dpleft', 'moveLeft')
  input:bind('dpright', 'moveRight')
  input:bind('dpdown', 'moveDown')]]--
end

function love.update(dt)
  world:update(dt)
  crates:update(dt)

  --[[ if input:down('moveUp') then magnet.collider:applyLinearImpulse(0, -player.maxSpeed.y) end
  if input:down('moveLeft') then magnet.collider:applyLinearImpulse(-player.maxSpeed.x, 0) end
  if input:down('moveRight') then magnet.collider:applyLinearImpulse(player.maxSpeed.x, 0) end
  if input:down('moveDown') then magnet.collider:applyLinearImpulse(0, player.maxSpeed.y) end ]]--

  -- this is temp, ofc, it's ugly af
  if input:pressed('switch') then
    velocity = {0, 0}

    -- first, let's take care of the attached crates
    for key in pairs(crates:getAttached()) do
      current.x, current.y = crates.attached[key].collider:getPosition()

      if magnet.side == 'LEFT' then
        current.x = current.x - CONST_SIDES.LEFT[1]

        -- then, we need to mirror it onto the other side
        current.x = CONST_SIDES.RIGHT[1] + CONST_SIDES.WIDTH - current.x
      else
        current.x = current.x - CONST_SIDES.RIGHT[1]

        current.x = CONST_SIDES.LEFT[1] + CONST_SIDES.WIDTH - current.x
      end

      crates.attached[key].collider:setPosition(current.x, current.y)
    end

    current.x, current.y = magnet.collider:getPosition()

    -- i want a relative x position, for easier use, so first
    -- let's substract the x position depending on the side
    if magnet.side == 'LEFT' then
      current.x = current.x - CONST_SIDES.LEFT[1]

      -- then, we need to mirror it onto the other side
      current.x = CONST_SIDES.RIGHT[1] + CONST_SIDES.WIDTH - current.x
      magnet.side = 'RIGHT'
    else
      current.x = current.x - CONST_SIDES.RIGHT[1]

      current.x = CONST_SIDES.LEFT[1] + CONST_SIDES.WIDTH - current.x
      magnet.side = 'LEFT'
    end

    magnet.collider:setPosition(current.x, current.y)
  else
    if input:down('moveUp') or input:down('moveLeft') or input:down('moveRight') or input:down('moveDown') then
      if input:down('moveUp') then velocity[2] = -player.maxSpeed.y
      elseif input:down('moveDown') then velocity[2] = player.maxSpeed.y
      else velocity[2] = 0 end
      if input:down('moveLeft') then velocity[1] = -player.maxSpeed.x
      elseif input:down('moveRight') then velocity[1] = player.maxSpeed.x
      else velocity[1] = 0 end
    else
      velocity = {0, 0}
    end
  end

  magnet.collider:setLinearVelocity(velocity[1], velocity[2])
end

function love.draw()
  --[[love.graphics.clear(255, 255, 255)

  love.graphics.setColor(0, 0, 0, 1)
  love.graphics.polygon('line', CONST_SIDES.LEFT)
  love.graphics.rectangle('line', magnet.x, magnet.y, 32, 32) ]]--

  world:draw()

  current.x, current.y = magnet.collider:getPosition()
  love.graphics.print('Pos X: ' .. current.x .. ', Pos Y: ' .. current.y)

  -- love.graphics.print('Key code: ' .. key)
  --love.graphics.draw(assets.sprites.crane)
end