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 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 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)
  
  --Edit box.
  love.graphics.rectangle( "line", love.graphics.getWidth() / 2, h, love.graphics.getWidth() / 2, 30 )
  if map.cities.selectedCity then
    local c = map.cities.selectedCity
    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 )
  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

function love.keypressed(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
    if key == "1" then
      map.coastlines.visible = not map.coastlines.visible
    end
    if key == "2" then
      map.coastlinesLow.visible = not map.coastlinesLow.visible
    end
    if key == "3" then
      map.international.visible = not map.international.visible
    end
    wasKeyPressed = true
end