require 'util'
require 'drawutil'
require 'def'

local obj = require 'obj'

width = 64
height = 64

tilesize = 32
zoom = 1

world = {}

sprites = {}

money = 0

objects = {}

local selectedTile = 1
local defaultTileRotation = 0

function love.load()
  function getSprites(d)
    local dir = "assets/sprites"
    if d then
      dir = dir .. "/" .. d
    end
    local files = love.filesystem.getDirectoryItems(dir)
    for _,file in ipairs(files) do
      if string.sub(file, -4) == ".png" then
        local spritename = string.sub(file, 1, -5)
        local sprite = love.graphics.newImage(dir .. "/" .. file)
        if d then
          spritename = d .. "/" .. spritename
        end
        sprites[spritename] = sprite
      elseif love.filesystem.getInfo(dir .. "/" .. file).type == "directory" then
        local newdir = file
        if d then
          newdir = d .. "/" .. newdir
        end
        getSprites(file)
      end
    end
  end

  getSprites()

  for x = 1, width do
    world[x] = {}
    for y = 1, height do
      world[x][y] = {0}
    end
  end

  love.graphics.setDefaultFilter('nearest', 'nearest')
end

local timer = 0
function love.update(dt)
  --dt = dt * 0.1

  for x = 1, width do
    for y = 1, height do
      local tileid = getTile(x, y)
      if tileid[1] ~= 0 then
        local tile = tiles[tileid[1]]

        if tile.type == 'mine' then
          if ((timer + dt + x * 0.25 + y * 0.5) % (1/tile.obtains.count)) < ((timer + x * 0.25 + y * 0.5) % (1/tile.obtains.count)) then
            local a = -(tileid.rotation or 0) * 90
            local x = x + 0.5 - math.sin(math.rad(a)) * 0.7
            local y = y + 0.5 - math.cos(math.rad(a)) * 0.7
  
            table.insert(objects, {
              x = x,
              y = y,
              size = math.random(30, 40)/100,
              type = tile.obtains.id,
              color = {0.5, 0.4, 0.4},
            })
          end
        end
      end
    end
  end

  timer = timer + dt

  for i,o in ipairs(objects) do
    obj.updateObject(i, o, dt)
  end
end

function love.draw()
  love.graphics.setBackgroundColor(0.8, 0.7, 0.7)
  
  -- layer 1
  for x = 1, width do
    for y =1, height do
      local drawx = x * tilesize
      local drawy = y * tilesize

      love.graphics.setColor(0.4, 0.3, 0.3)
      love.graphics.rectangle('line', drawx, drawy, tilesize, tilesize)

      local tileid = getTile(x, y)

      if tileid[1] ~= 0 then
        local tile = tiles[tileid[1]]
        
        local sprite = s('tiles/' .. tile.name)

        if sprite then
          love.graphics.setColor(1, 1, 1)
          love.graphics.draw(sprite, drawx + tilesize/2, drawy + tilesize/2, math.rad((tileid.rotation or 0) * 90), 1, 1, tilesize/2, tilesize/2)
        else
          love.graphics.setColor(0, 0, 0)
          love.graphics.rectangle('fill', drawx, drawy, tilesize, tilesize)
        end
      end
    end
  end

  -- layer 2
  for x = 0, width do
    for y = 0, height do
      local drawx = x * tilesize
      local drawy = y * tilesize

      local hovered = mouseInsideRectangle(drawx, drawy, tilesize + 1, tilesize + 1)

      if hovered then
        love.graphics.setColor(0.8, 0.7, 0.7)
        love.graphics.rectangle('line', drawx, drawy, tilesize, tilesize)
      end
    end
  end

  for _, o in ipairs(objects) do
    local trans = 1 - (o.despawntimer / 5)

    love.graphics.setColor({o.color[1], o.color[2], o.color[3], trans})
    love.graphics.rectangle('fill', o.x * tilesize - o.size * tilesize / 2, o.y * tilesize - o.size * tilesize / 2, o.size * tilesize, o.size * tilesize)
    love.graphics.setColor(0, 0, 0, trans)
    love.graphics.rectangle('line', o.x * tilesize - o.size * tilesize / 2, o.y * tilesize - o.size * tilesize / 2, o.size * tilesize, o.size * tilesize)
  end

  local hoveredTileId = getCameraTile(love.mouse.getX(), love.mouse.getY())
  if hoveredTileId[1] ~= 0 then
    local tmaxwidth = 256
    local padding = 4
    local offset = 16

    local hoveredTile = tiles[hoveredTileId[1]]

    local text = hoveredTile.displayname .. '\n' .. hoveredTile.desc
    local textObj = love.graphics.newText(love.graphics.getFont(), text)
    textObj:setf(text, tmaxwidth, 'left')

    local twidth, theight = textObj:getDimensions()
    local mx, my = love.mouse.getPosition()
    local tilex = math.floor(love.mouse.getX() / tilesize) * tilesize
    local tiley = math.floor(love.mouse.getY() / tilesize) * tilesize

    love.graphics.setColor(0.9, 0.9, 0.9, 0.7)
    love.graphics.rectangle('fill', mx + offset, my + offset, twidth + padding * 2, theight + padding * 2)
    love.graphics.setColor(0, 0, 0, 0.7)
    love.graphics.draw(textObj, mx + padding + offset, my + padding + offset)

    if hoveredTileId.rotation then
      love.graphics.setColor(1, 1, 1, 0.7)
      local a = -hoveredTileId.rotation * 90
      arrow(tilex, tiley, tilesize, tilesize, a)
    end
  else
    if selectedTile ~= 0 then
      local drawTile = tiles[selectedTile]
      local tilex = math.floor(love.mouse.getX() / tilesize) * tilesize
      local tiley = math.floor(love.mouse.getY() / tilesize) * tilesize

      love.graphics.setColor(1, 1, 1, 0.5)

      local sprite = s('tiles/' .. drawTile.name)

      if sprite then
        love.graphics.draw(sprite, tilex + tilesize/2, tiley + tilesize/2, math.rad((defaultTileRotation or 0) * 90), 1, 1, tilesize/2, tilesize/2)
      else
        love.graphics.rectangle('fill', tilex, tiley, tilesize, tilesize)
      end
    end
  end

  love.graphics.setColor(1, 1, 1)
  love.graphics.print(love.timer.getFPS() .. 'fps\n' .. money .. '$')
end

function love.mousepressed(x, y, button)
  if button == 1 then
    local tileid = getCameraTile(x, y)
    if tileid[1] ~= 0 then
      local tile = tiles[tileid[1]]
      if tile.type == 'clicker' then
        local a = -tileid.rotation * 90 + math.random(-10, 10)/10
        local x = math.floor(x/tilesize) + 0.5 - math.sin(math.rad(a)) * 0.7
        local y = math.floor(y/tilesize) + 0.5 - math.cos(math.rad(a)) * 0.7

        for i = 1, tile.obtains.count do
          table.insert(objects, {
            x = x,
            y = y,
            size = math.random(30, 40)/100,
            type = tile.obtains.id,
            color = {0.5, 0.4, 0.4},
          })
        end
      end
    else
      if selectedTile ~= 0 then
        world[math.floor(x/tilesize)][math.floor(y/tilesize)] = {selectedTile, rotation = defaultTileRotation}
      end
    end
  elseif button == 2 then
    local tileid = getCameraTile(x, y)
    if tileid[1] ~= 0 then
      world[math.floor(x/tilesize)][math.floor(y/tilesize)] = {0}
    end
  end
end

function love.wheelmoved(x, y)
  local mx, my = love.mouse.getPosition()
  local tileid = getCameraTile(mx, my)

  if tileid[1] ~= 0 then
    local rot = math.min(math.max(((tileid.rotation or 0) + math.floor(y)) % 4, 0), 3)
    defaultTileRotation = rot
    tileid.rotation = rot
    world[math.floor(mx/tilesize)][math.floor(my/tilesize)] = tileid
  else
    selectedTile = math.min(math.max(selectedTile + math.floor(y), 0), #tiles)
  end
end