local sensors = require("scripts.sensors")

local stats_gui = {}

function stats_gui.build(player, player_table)
  local single_line = player_table.settings.single_line
  local style = "statsgui_frame"
  if player_table.settings.adjust_for_clock then
    style = style .. "_clock"
  end
  if not player_table.settings.adjust_for_ups then
    style = style .. "_no_ups"
  end

  local window = player.gui.screen.add({
    type = "frame",
    style = style,
    direction = single_line and "horizontal" or "vertical",
    ignored_by_interaction = true,
  })

  player_table.stats_window = window

  stats_gui.set_width(player, player_table)
  stats_gui.update(player, player_table)
end

function stats_gui.destroy(player_table)
  local stats_window = player_table.stats_window
  if stats_window and stats_window.valid then
    stats_window.destroy()
    player_table.stats_window = nil
  end
end

function stats_gui.update(player, player_table)
  local window = player_table.stats_window
  if not window or not window.valid then
    stats_gui.build(player, player_table)
    window = player_table.stats_window
  end
  local children = window.children

  local i = 0
  for _, sensor in pairs(sensors) do
    local caption = sensor(player)
    if caption then
      i = i + 1
      local label = children[i]
      if label then
        label.caption = caption
      else
        window.add({
          type = "label",
          style = "statsgui_label",
          caption = caption,
        })
      end
    end
  end
  -- remove extra children
  for j = i + 1, #children do
    children[j].destroy()
  end
end

function stats_gui.set_width(player, player_table)
  local window = player_table.stats_window
  if not window or not window.valid then
    stats_gui.build(player, player_table)
    window = player_table.stats_window
  end
  window.style.width = (player.display_resolution.width / player.display_scale)
end

return stats_gui