local core = require "core"
local common = require "core.common"
local config = require "core.config"
local style = require "core.style"
local View = require "core.view"


local LogView = View:extend()


function LogView:new()
  LogView.super.new(self)
  self.last_item = 0
  self.scrollable = true
  self.yoffset = 0
end


function LogView:get_name()
  return "Log"
end


function LogView:update()
  local item = core.log_items[#core.log_items]
  if self.last_item ~= item then
    self.last_item = item
    self.scroll.to.y = 0
    self.yoffset = -(style.font:get_height() + style.padding.y)
  end

  self.scroll.to.y = math.max(0, self.scroll.to.y)
  self:move_towards("yoffset", 0)

  LogView.super.update(self)
end


function LogView:draw()
  self:draw_background(style.background)

  local ox, oy = self:get_content_offset()
  local th = style.font:get_height()
  local y = oy + style.padding.y + self.yoffset

  for i = #core.log_items, 1, -1 do
    local x = ox + style.padding.x
    local item = core.log_items[i]
    local time = os.date(nil, item.time)
    x = renderer.draw_text(style.font, time, x, y, style.dim)
    x = x + style.padding.x
    local subx = x
    x = renderer.draw_text(style.font, item.text, x, y, style.text)
    x = renderer.draw_text(style.font, " in " .. item.view, x, y, style.dim)
    y = y + th
    if item.info then
      for line in item.info:gmatch("[^\n]+") do
        renderer.draw_text(style.font, line, subx, y, style.dim)
        y = y + th
      end
    end
    y = y + style.padding.y
  end
end


return LogView