-- Chuchu by Makaron
-- The main game screen of Chuchu
Boipus = require('deps.boipushy')
Physics = require('deps.physics')

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

GRAVITY = 512
PLAN_SIZE = {
  marginX = 120,
  marginY = 120,
  w = 512,
  h = 512
}

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

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

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

local Chu = {}

function Chu.new(x, y, debug)
  obj = {}
  obj.x = x
  obj.y = y
  if debug == nil then debug = false end
  obj.debug = debug

  world = Physics(0, GRAVITY)
  world:addClass('Player')
  world:addClass('GamePlan')
  world:addClass('Crate')
  obj.gamePlan = world:addChain(true, {
    x - PLAN_SIZE.marginX, y - PLAN_SIZE.marginY,
    x + PLAN_SIZE.w + PLAN_SIZE.marginX, y - PLAN_SIZE.marginY,
    x + PLAN_SIZE.w + PLAN_SIZE.marginX, y + PLAN_SIZE.h + PLAN_SIZE.marginY,
    x - PLAN_SIZE.marginX, y + PLAN_SIZE.h + PLAN_SIZE.marginY
  }):setClass('GamePlan')

  magnet.collider = world:addRectangle(x + 50, y + 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')
  input:bind(love.keyboard.getKeyFromScancode('lshift'), 'detach')

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

  return setmetatable(obj, {
     __index = Chu
  })
end

function Chu:update(dt)
  world:update(dt)
  crates:update(dt)

  -- 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
      mirrorCollider(crates.attached[key].collider, magnet.side)
    end

    mirrorCollider(magnet.collider, magnet.side)

    if magnet.side == 'LEFT' then
      magnet.side = 'RIGHT'
    else
      magnet.side = 'LEFT'
    end]]--
  if input:pressed('detach') then
    velocity = {0, 0}

    local attached = crates:getAttached()
    for key in pairs(attached) do
      crates:detach(key)
    end
  elseif 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

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

function Chu:draw()
  love.graphics.setColor(255, 255, 255, 1)
  love.graphics.draw(assets.sprites.level.background, self.x, self.y)
  love.graphics.draw(assets.sprites.level.clouds, self.x, self.y + 32)
  love.graphics.draw(assets.sprites.level.cloudsmirror, self.x, self.y)
  world:draw()

  if self.debug then
    love.graphics.setColor(255, 0, 0, .5)
    love.graphics.rectangle('line', self.x, self.y, PLAN_SIZE.w, PLAN_SIZE.h)
  end
end

return Chu