local love = assert( love, "This tool requires LOVE: love2d.org" )
local map = require 'map'
local SAVEDIRECTORY = "out/"
local Camera = require 'camera'
local wasKeyPressed

function love.load()

  local lfs = assert( love.filesystem )
  lfs.setIdentity( "dcearth", false )
  assert( lfs.createDirectory( SAVEDIRECTORY.."data/earth" ))
  assert( lfs.createDirectory( SAVEDIRECTORY.."data/graphics" ))
  map.load()


  love.graphics.setNewFont( 12, "mono" )
end

function love.update( dt )
  local tx, ty = 0, 0
  local moveCamera = false
  if love.keyboard.isScancodeDown( "w" ) then moveCamera = true; ty = ty + 1 end
  if love.keyboard.isScancodeDown( "a" ) then moveCamera = true; tx = tx - 1 end
  if love.keyboard.isScancodeDown( "s" ) then moveCamera = true; ty = ty - 1 end
  if love.keyboard.isScancodeDown( "d" ) then moveCamera = true; tx = tx + 1 end
  if love.keyboard.isScancodeDown( "q" ) then Camera.Zoom( true ) end
  if love.keyboard.isScancodeDown( "e" ) then Camera.Zoom( false ) end
  if moveCamera then Camera.Translate( tx, ty ) end


end


function love.draw()
  love.graphics.push( "all" )
  map.draw()
  love.graphics.pop()

  --Status bar.
  local x, y = love.mouse.getPosition()
  local wx, wy = Camera.GetWorldCoordinate( x, y )
  local bx, by = Camera.GetBitmapCoordinate( x, y )
  local h = love.graphics.getHeight() - 30
  love.graphics.setColor( 0.2, 0.1, 0.1, 0.5 )
  love.graphics.rectangle( "fill", 0, h, love.graphics.getWidth() / 2, 30 )
  love.graphics.setColor( 1, 1, 1, 1 )
  love.graphics.rectangle( "line", 0, h, love.graphics.getWidth() / 2, 30 )
  love.graphics.print(("SCREEN\t%d\t%d\nWORLD \t%5.2f\t%5.2f"):format(x, y, wx, wy), 0, h)
  love.graphics.print(("BITMAP\t%5.2f\t%5.2f"):format(bx, by), 200, h )

  --Edit box.
  love.graphics.rectangle( "line", love.graphics.getWidth() / 2, h, love.graphics.getWidth() / 2, 30 )
  if map.cities.selected then
    local c = map.cities.selected
    love.graphics.setColor( 0.2, 0.1, 0.1, 0.5 )
    love.graphics.rectangle( "fill", 0, 0, 150 ,100 )    
    love.graphics.setColor( 1, 1, 1, 1 )
    love.graphics.rectangle( "line", 0, 0, 150 ,100 )   
    love.graphics.setColor( 1.2, 1.1, 1.1, 1.5 )
    love.graphics.print( ("NAME: %s\nX: %3.2f\nY: %3.2f\nPOP: %d\nCAPITAL: %s\nCOUNTRY: %s"):format(c.name, c.x, c.y, c.pop, tostring(c.capital), c.country), 0, 0 )
  elseif map.travelnodes.selected then
    local c = map.travelnodes.selected
    love.graphics.setColor( 0.2, 0.1, 0.1, 0.5 )
    love.graphics.rectangle( "fill", 0, 0, 150 ,100 )    
    love.graphics.setColor( 1, 1, 1, 1 )
    love.graphics.rectangle( "line", 0, 0, 150 ,100 )   
    love.graphics.setColor( 1.2, 1.1, 1.1, 1.5 )
    love.graphics.print( ("Node: %d\nX: %3.2f\nY: %3.2f\n"):format(c.number, c.x, c.y) )
  elseif map.ainodes.selectedNode then
    local c = map.ainodes.selected
    love.graphics.setColor( 0.2, 0.1, 0.1, 0.5 )
    love.graphics.rectangle( "fill", 0, 0, 150 ,100 )    
    love.graphics.setColor( 1, 1, 1, 1 )
    love.graphics.rectangle( "line", 0, 0, 150 ,100 )   
    love.graphics.setColor( 1.2, 1.1, 1.1, 1.5 )
    love.graphics.print( ("Node: %d\nX: %3.2f\nY: %3.2f\noffensive: %s"):format(c.number, c.x, c.y, c.attack) )
  end
end

function love.resize(w, h)
  Camera.Resize( w, h )
end

function love.wheelmoved(x, y)
  Camera.Zoom( (y > 0) and true or false )
end

function love.mousepressed( x, y, button, istouch, presses )
  local wx, wy = Camera.GetWorldCoordinate( x, y )
  if button == 1 then
    map.cities.lockSelection()
  else
    map.cities.unlockSelection()
  end
  print( ("MOUSE\tx %f\ty %f\twx %f\twy %f"):format(x, y, wx, wy) )
end

function love.mousemoved( x, y, dx, dy, istouch )
  map.cities.selectNearestCity( Camera.GetWorldCoordinate( x, y ) )
end

local function ToggleVisibility( layer )
  if not layer then return end
  local ml
  if map[layer] then ml = map[layer] end 
  if map.territory[layer] then ml = map.territory[layer] end
  assert( ml )
  ml.visible = not( ml.visible )
  print( layer, ml.visible )
end

local layerVisibilityKeybinds = {
  ["1"] = "africa",
  ["2"] = "europe",
  ["3"] = "northamerica",
  ["4"] = "southamerica",
  ["5"] = "southasia",
  ["6"] = "russia",
  ["7"] = "sailable",
  ["8"] = "coastlines",
  ["9"] = "coastlinesLow",
  ["0"] = "international",
  ["-"] = "cities"
}

function love.keypressed(key)
  ToggleVisibility( layerVisibilityKeybinds[key] )

  if key == "l" then
    -- To open a file or folder, "file://" must be prepended to the path.
    love.system.openURL("file://"..love.filesystem.getSaveDirectory())
  end

  wasKeyPressed = true
end