local gui = require("__flib__.gui")
local misc = require("__flib__.misc")

local constants = require("constants")
local util = require("scripts.util")

local templates = require("templates")

local history_tab = {}

function history_tab.build(widths)
  return {
    tab = {
      type = "tab",
      caption = { "gui.ltnm-history" },
      ref = { "history", "tab" },
      actions = {
        on_click = { gui = "main", action = "change_tab", tab = "history" },
      },
    },
    content = {
      type = "frame",
      style = "ltnm_main_content_frame",
      direction = "vertical",
      ref = { "history", "content_frame" },
      {
        type = "frame",
        style = "ltnm_table_toolbar_frame",
        style_mods = { right_padding = 4 },
        templates.sort_checkbox(widths, "history", "train_id", false),
        templates.sort_checkbox(widths, "history", "route", false),
        templates.sort_checkbox(widths, "history", "depot", false),
        templates.sort_checkbox(widths, "history", "network_id", false),
        templates.sort_checkbox(widths, "history", "runtime", false),
        templates.sort_checkbox(widths, "history", "finished", true, nil, true),
        templates.sort_checkbox(nil, "history", "shipment", false),
        {
          type = "sprite-button",
          style = "tool_button_red",
          sprite = "utility/trash",
          tooltip = { "gui.ltnm-clear-history" },
          ref = { "history", "clear_button" },
          actions = {
            on_click = { gui = "main", action = "clear_history" },
          },
        },
      },
      { type = "scroll-pane", style = "ltnm_table_scroll_pane", ref = { "history", "scroll_pane" } },
      {
        type = "flow",
        style = "ltnm_warning_flow",
        visible = false,
        ref = { "history", "warning_flow" },
        {
          type = "label",
          style = "ltnm_semibold_label",
          caption = { "gui.ltnm-no-history" },
          ref = { "history", "warning_label" },
        },
      },
    },
  }
end

function history_tab.update(self)
  local dictionaries = self.player_table.dictionaries

  local state = self.state
  local refs = self.refs.history
  local widths = self.widths

  local search_query = state.search_query
  local search_network_id = state.network_id
  local search_surface = state.surface

  local ltn_history = state.ltn_data.history
  local scroll_pane = refs.scroll_pane
  local children = scroll_pane.children

  local sorts = state.sorts[state.active_tab]
  local active_sort = sorts._active
  local sorted_history = state.ltn_data.sorted_history[active_sort]

  local table_index = 0

  -- False = ascending (arrow down), True = descending (arrow up)
  local start, finish, step
  if sorts[active_sort] then
    start = #sorted_history
    finish = 1
    step = -1
  else
    start = 1
    finish = #sorted_history
    step = 1
  end

  if not global.flags.deleted_history then
    for sorted_index = start, finish, step do
      local history_id = sorted_history[sorted_index]
      local history_entry = ltn_history[history_id]

      if
        (search_surface == -1 or (history_entry.surface_index == search_surface))
        and bit32.btest(history_entry.network_id, search_network_id)
        and (
          #search_query == 0 or string.find(history_entry.search_strings[self.player.index], string.lower(search_query))
        )
      then
        table_index = table_index + 1
        local row = children[table_index]
        local color = table_index % 2 == 0 and "dark" or "light"
        if not row then
          row = gui.add(scroll_pane, {
            type = "frame",
            style = "ltnm_table_row_frame_" .. color,
            {
              type = "label",
              style = "ltnm_clickable_semibold_label",
              style_mods = { width = widths.history.train_id, horizontal_align = "center" },
              tooltip = constants.open_station_gui_tooltip,
            },
            {
              type = "flow",
              style_mods = { vertical_spacing = 0 },
              direction = "vertical",
              {
                type = "label",
                style = "ltnm_clickable_semibold_label",
                style_mods = { width = widths.history.route },
                tooltip = constants.open_station_gui_tooltip,
              },
              {
                type = "label",
                style = "ltnm_clickable_semibold_label",
                style_mods = { width = widths.history.route },
                tooltip = constants.open_station_gui_tooltip,
              },
            },
            { type = "label", style_mods = { width = widths.history.depot } },
            { type = "label", style_mods = { width = widths.history.network_id, horizontal_align = "center" } },
            { type = "label", style_mods = { width = widths.history.finished, horizontal_align = "center" } },
            { type = "label", style_mods = { width = widths.history.runtime, horizontal_align = "center" } },
            {
              type = "frame",
              name = "shipment_frame",
              style = "ltnm_small_slot_table_frame_" .. color,
              style_mods = { width = widths.history.shipment },
              { type = "table", name = "shipment_table", style = "slot_table", column_count = 4 },
            },
          })
        end

        gui.update(row, {
          {
            elem_mods = { caption = history_entry.train_id },
            actions = {
              on_click = { gui = "main", action = "open_train_gui", train_id = history_entry.train_id },
            },
          },
          {
            {
              elem_mods = { caption = history_entry.from },
              actions = {
                on_click = { gui = "main", action = "open_station_gui", station_id = history_entry.from_id },
              },
            },
            {
              elem_mods = {
                caption = "[color=" .. constants.colors.caption.str .. "]->[/color]  " .. history_entry.to,
              },
              actions = {
                on_click = { gui = "main", action = "open_station_gui", station_id = history_entry.to_id },
              },
            },
          },
          { elem_mods = { caption = history_entry.depot } },
          { elem_mods = { caption = util.signed_int32(history_entry.network_id) } },
          { elem_mods = { caption = misc.ticks_to_timestring(history_entry.runtime) } },
          { elem_mods = { caption = misc.ticks_to_timestring(history_entry.finished) } },
        })

        util.slot_table_update(
          row.shipment_frame.shipment_table,
          { { color = "default", entries = history_entry.shipment, translations = dictionaries.materials } }
        )
      end
    end
  end

  for child_index = table_index + 1, #children do
    children[child_index].destroy()
  end

  if table_index == 0 then
    refs.warning_flow.visible = true
    scroll_pane.visible = false
    refs.content_frame.style = "ltnm_main_warning_frame"
    refs.clear_button.enabled = false
  else
    refs.warning_flow.visible = false
    scroll_pane.visible = true
    refs.content_frame.style = "ltnm_main_content_frame"
    refs.clear_button.enabled = true
  end
end

return history_tab