local Font = Object:extend()

-- Initilizing and configuring option

function Font:new(filename, size)
  local filename = filename
  self.font   = love.graphics.newFont(filename, size)
  self.filter = ""
  self:setColor(1, 1, 1, 1)
  self:setSpacing(false, 0)
  self.align  = "left"
end

function Font:set()
  love.graphics.setFont(self.font)
end

function Font:setColor(r, g, b, a)
  self.color = {}
  self.color.r = r
  self.color.g = g
  self.color.b = b
  self.color.a = a
end

function Font:setColorFromTable(color)
  self.color = color
end

function Font:setSpacing(use_custom, size)
  self.spacing = {}
  self.spacing.active = use_custom
  self.spacing.size   = size
end

function Font:setAlign(align)
  self.align = align
end

function Font:setFilter(filter)
  self.filter = filter
end

function Font:setLineHeight(height)
  self.font:setLineHeight(height)
end

-- get information functions

function Font:getHeight()
  local font = self.font
  return font:getHeight()
end

function Font:getWidth(string)
  local spacing = 0
  if (self.spacing.active == true) then
    local charNumber = string.len(string)
    spacing = self.spacing.size * charNumber
  end
  local width = self.font:getWidth(string) + spacing
  return width
end

function Font:getColor()
  return self.color
end

-- print functions

function Font:draw(text, x, y, limit, align, r, sx, sy, ox, oy, kx, ky)
  -- draw text with color and effect applied
  local limit = limit or 0
  local align = align or self.align

  self:applyFilter(text, x, y, limit, align, r, sx, sy, ox, oy, kx, ky)
  love.graphics.setColor(self.color.r, self.color.g, self.color.b, self.color.a)
  self:printf(text, x, y, limit, align, r, sx, sy, ox, oy, kx, ky)
end

function Font:print(text, x, y, align, r, sx, sy, ox, oy, kx, ky)

  self:set()
  if (self.spacing.active) then
    utils.draw.printWithSpacing(text, self.spacing.size, align, x, y, r, sx, sy, ox, oy, kx, ky)
  else
    utils.draw.print(text, align, x, y, r, sx, sy, ox, oy, kx, ky)
  end

end

function Font:printf(text, x, y, limit, align, r, sx, sy, ox, oy, kx, ky)
  self:set()
  if (limit > 0) then
    love.graphics.printf(text, x, y, limit, align, r, sx, sy, ox, oy, kx, ky)
  else
    self:print(text, x, y, align, r, sx, sy, ox, oy, kx, ky)
  end
end

-- FILTER SYSTEM

function Font:applyFilter(text, x, y, limit, align, r, sx, sy, ox, oy, kx, ky)
  if self.filter == "shadow" then
    self:applyFilterShadow(text, x, y, limit, align, r, sx, sy, ox, oy, kx, ky)
  elseif self.filter == "border" then
    self:applyFilterBorder(text, x, y, limit, align, r, sx, sy, ox, oy, kx, ky)
  elseif self.filter == "doubleborder" then
    self:applyFilterDoubleBorder(text, x, y, limit, align, r, sx, sy, ox, oy, kx, ky)
  end
end

function Font:applyFilterShadow(text, x, y, limit, align, r, sx, sy, ox, oy, kx, ky)
  love.graphics.setColor(0, 0, 0, 1)
  self:printf(text, x+1, y+1, limit, align, align, r, sx, sy, ox, oy, kx, ky)
  utils.draw.resetColor()
end

function Font:applyFilterBorder(text, x, y, limit, align, r, sx, sy, ox, oy, kx, ky)
  love.graphics.setColor(0, 0, 0, 1)

  self:printf(text, x-1, y-1, limit, align, r, sx, sy, ox, oy, kx, ky)
  self:printf(text, x  , y-1, limit, align, r, sx, sy, ox, oy, kx, ky)
  self:printf(text, x+1, y-1, limit, align, r, sx, sy, ox, oy, kx, ky)

  self:printf(text, x+1, y  , limit, align, r, sx, sy, ox, oy, kx, ky)
  self:printf(text, x-1, y  , limit, align, r, sx, sy, ox, oy, kx, ky)

  self:printf(text, x-1, y+1, limit, align, r, sx, sy, ox, oy, kx, ky)
  self:printf(text, x  , y+1, limit, align, r, sx, sy, ox, oy, kx, ky)
  self:printf(text, x+1, y+1, limit, align, r, sx, sy, ox, oy, kx, ky)

  utils.draw.resetColor()
end

function Font:applyFilterDoubleBorder(text, x, y, limit, align, r, sx, sy, ox, oy, kx, ky)
  love.graphics.setColor(0, 0, 0, 1)

  self:printf(text, x-2, y-2, limit, align, r, sx, sy, ox, oy, kx, ky)
  self:printf(text, x  , y-2, limit, align, r, sx, sy, ox, oy, kx, ky)
  self:printf(text, x+2, y-2, limit, align, r, sx, sy, ox, oy, kx, ky)

  self:printf(text, x+2, y  , limit, align, r, sx, sy, ox, oy, kx, ky)
  self:printf(text, x-2, y  , limit, align, r, sx, sy, ox, oy, kx, ky)

  self:printf(text, x-2, y+2, limit, align, r, sx, sy, ox, oy, kx, ky)
  self:printf(text, x  , y+2, limit, align, r, sx, sy, ox, oy, kx, ky)
  self:printf(text, x+2, y+2, limit, align, r, sx, sy, ox, oy, kx, ky)

  utils.draw.resetColor()
end

return Font