local gui = require("gui")

local set_tiles = require("scripts.processors.set-tiles")

local set_tiles_gui = {}

function set_tiles_gui.build(player, player_table)
  local settings = player_table.set_tiles_settings
  local refs = gui.build(player.gui.screen, {
    {
      type = "frame",
      direction = "vertical",
      caption = { "controls.bpt-set-tiles" },
      ref = { "window" },
      actions = {
        on_closed = { gui = "set_tiles", action = "close" },
      },
      children = {
        {
          type = "frame",
          style = "inside_shallow_frame_with_padding",
          children = {
            {
              type = "choose-elem-button",
              style = "slot_button_in_shallow_frame",
              elem_type = "tile",
              tile = settings.tile,
              elem_filters = { { filter = "blueprintable" } },
              actions = {
                on_elem_changed = { gui = "set_tiles", action = "update_tile" },
              },
              ref = { "tile_button" },
            },
            {
              type = "line",
              style_mods = { left_margin = 8, vertically_stretchable = true },
              direction = "vertical",
            },
            {
              type = "flow",
              style_mods = { left_margin = 8 },
              direction = "vertical",
              children = {
                {
                  type = "checkbox",
                  caption = { "gui.bpt-fill-gaps" },
                  tooltip = { "gui.bpt-fill-gaps-description" },
                  state = settings.fill_gaps,
                  ref = { "fill_gaps_checkbox" },
                },
                {
                  type = "flow",
                  style_mods = { vertical_align = "center" },
                  ref = { "margin_flow" },
                  children = {
                    {
                      type = "label",
                      style_mods = { right_margin = 8 },
                      caption = { "gui.bpt-margin" },
                      tooltip = { "gui.bpt-margin-description" },
                    },
                    {
                      type = "textfield",
                      style_mods = { width = 50, horizontal_align = "center" },
                      text = tostring(settings.margin),
                      numeric = true,
                      ref = { "margin_textfield" },
                    },
                  },
                },
              },
            },
          },
        },
        {
          type = "flow",
          style = "dialog_buttons_horizontal_flow",
          children = {
            {
              type = "button",
              style = "back_button",
              caption = { "gui.cancel" },
              actions = {
                on_click = { gui = "set_tiles", action = "close" },
              },
            },
            {
              type = "empty-widget",
              style = "flib_dialog_footer_drag_handle",
              style_mods = { minimal_width = 24 },
              ref = { "footer_drag_handle" },
            },
            {
              type = "button",
              style = "confirm_button",
              caption = { "gui.confirm" },
              ref = { "confirm_button" },
              actions = {
                on_click = { gui = "set_tiles", action = "confirm" },
              },
            },
          },
        },
      },
    },
  })

  refs.footer_drag_handle.drag_target = refs.window
  refs.window.force_auto_center()

  player.opened = refs.window

  player_table.guis.set_tiles = {
    refs = refs,
  }
end

function set_tiles_gui.destroy(player_table)
  local gui_data = player_table.guis.set_tiles
  gui_data.refs.window.destroy()
  player_table.guis.set_tiles = nil
end

function set_tiles_gui.handle_action(e, msg)
  local player = game.get_player(e.player_index)
  local player_table = storage.players[e.player_index]
  local gui_data = player_table.guis.set_tiles
  local refs = gui_data.refs

  if msg.action == "close" then
    set_tiles_gui.destroy(player_table)
  elseif msg.action == "confirm" then
    local tile_name = refs.tile_button.elem_value
    if tile_name then
      -- Save settings
      local settings = player_table.set_tiles_settings
      settings.tile = tile_name
      settings.fill_gaps = refs.fill_gaps_checkbox.state
      settings.margin = tonumber(refs.margin_textfield.text) or 0

      -- Modify the blueprint
      set_tiles(player, tile_name, settings.fill_gaps, settings.margin)

      -- Destroy the GUI
      set_tiles_gui.destroy(player_table)
    end
  elseif msg.action == "update_tile" then
    local tile_name = refs.tile_button.elem_value
    if tile_name then
      refs.confirm_button.enabled = true
    else
      refs.confirm_button.enabled = false
    end
  end
end

return set_tiles_gui