local gui = require("__flib__.gui-lite")

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

local stations_tab = {}

function stations_tab.build(widths)
	return {
		tab = {
			type = "tab",
			caption = { "gui.ltnm-stations" },
			ref = { "stations", "tab" },
			actions = {
				on_click = { gui = "main", action = "change_tab", tab = "stations" },
			},
		},
		content = {
			type = "frame",
			style = "ltnm_main_content_frame",
			direction = "vertical",
			ref = { "stations", "content_frame" },
			{
				type = "frame",
				style = "ltnm_table_toolbar_frame",
				templates.sort_checkbox(widths, "stations", "name", true),
				templates.sort_checkbox(widths, "stations", "status", false, { "gui.ltnm-status-description" }),
				templates.sort_checkbox(widths, "stations", "network_id", false),
				templates.sort_checkbox(
				widths,
				"stations",
				"provided_requested",
				false,
				{ "gui.ltnm-provided-requested-description" }
			),
			templates.sort_checkbox(widths, "stations", "shipments", false, { "gui.ltnm-shipments-description" }),
			templates.sort_checkbox(widths, "stations", "control_signals", false),
		},
		{ type = "scroll-pane", style = "ltnm_table_scroll_pane", ref = { "stations", "scroll_pane" } },
		{
			type = "flow",
			style = "ltnm_warning_flow",
			visible = false,
			ref = { "stations", "warning_flow" },
			{
				type = "label",
				style = "ltnm_semibold_label",
				caption = { "gui.ltnm-no-stations" },
				ref = { "stations", "warning_label" },
			},
		},
	},
}
end

--- @param map_data MapData
--- @param player_data PlayerData
--- @return GuiElemDef
function stations_tab.build(map_data, player_data)

	local widths = constants.gui["en"]

	local search_item = player_data.search_item
	local search_network_name = player_data.search_network_name
	local search_network_mask = player_data.search_network_mask
	local search_surface_idx = player_data.search_surface_idx


	local stations_sorted = {}
	local to_sorted_manifest = {}
	for id, station in pairs(map_data.stations) do
		local entity = station.entity_stop
		if not entity.valid then
			goto continue
		end

		if search_network_name then
			if search_network_name ~= station.network_name then
				goto continue
			end
			local train_flag = get_network_flag(station, search_network_name)
			if not bit32.btest(search_network_mask, train_flag) then
				goto continue
			end
		elseif search_network_mask ~= -1 then
			if station.network_name == NETWORK_EACH then
				local masks = station.network_flag--[[@as {}]]
				for _, network_flag in pairs(masks) do
					if bit32.btest(search_network_mask, network_flag) then
						goto has_match
					end
				end
				goto continue
				::has_match::
			elseif not bit32.btest(search_network_mask, station.network_flag) then
				goto continue
			end
		end

		if search_surface_idx then
			if entity.surface.index ~= search_surface_idx then
				goto continue
			end
		end

		if search_item then
			if not station.deliveries then
				goto continue
			end
			for item_name, _ in pairs(station.deliveries) do
				if item_name == search_item then
					goto has_match
				end
			end
			goto continue
			::has_match::
		end

		stations_sorted[#stations_sorted + 1] = id
		::continue::
	end


	table.sort(stations_sorted, function(a, b)
		local station1 = map_data.stations[a]
		local station2 = map_data.stations[b]
		for i, v in ipairs(player_data.trains_orderings) do
			local invert = player_data.trains_orderings_invert[i]
			if v == ORDER_LAYOUT then
				if not station1.allows_all_trains and not station2.allows_all_trains then
					local layout1 = station1.layout_pattern--[[@as uint[] ]]
					local layout2 = station2.layout_pattern--[[@as uint[] ]]
					for j, c1 in ipairs(layout1) do
						local c2 = layout2[j]
						if c1 ~= c2 then
							return invert ~= (c2 and c1 < c2)
						end
					end
					if layout2[#layout1 + 1] then
						return invert ~= true
					end
				elseif station1.allows_all_trains ~= station2.allows_all_trains then
					return invert ~= station2.allows_all_trains
				end
			elseif v == ORDER_NAME then
				local name1 = station1.entity_stop.valid and station1.entity_stop.backer_name
				local name2 = station2.entity_stop.valid and station2.entity_stop.backer_name
				if name1 ~= name2 then
					return invert ~= (name1 and (name2 and name1 < name2 or true) or false)
				end
			elseif v == ORDER_TOTAL_TRAINS then
				if station1.deliveries_total ~= station2.deliveries_total then
					return invert ~= (station1.deliveries_total < station2.deliveries_total)
				end
			elseif v == ORDER_MANIFEST then
				if not next(station1.deliveries) then
					if next(station2.deliveries) then
						return invert ~= true
					end
				elseif not next(station2.deliveries) then
					return invert ~= false
				else
					local first_item = nil
					local first_direction = nil
					for item_name in dual_pairs(station1.deliveries, station2.deliveries) do
						if not first_item or item_lt(map_data.manager, item_name, first_item) then
							local count1 = station1.deliveries[item_name] or 0
							local count2 = station2.deliveries[item_name] or 0
							if count1 ~= count2 then
								first_item = item_name
								first_direction = count1 < count2
							end
						end
					end
					if first_direction ~= nil then
						return invert ~= first_direction
					end
				end
			end
		end
		return (not player_data.trains_orderings_invert[#player_data.trains_orderings_invert]) == (a < b)
	end)

	local scroll_pane = refs.scroll_pane


	for i, station_id in pairs(stations_sorted) do
		local station = map_data.stations[station_id]

		local color = i % 2 == 0 and "dark" or "light"
		local row = gui.add(scroll_pane, {
			type = "frame",
			style = "ltnm_table_row_frame_" .. color,
			{
				type = "label",
				style = "ltnm_clickable_semibold_label",
				style_mods = { width = widths.name },
				tooltip = constants.open_station_gui_tooltip,
			},
			templates.status_indicator(widths.status, true),
			{ type = "label", style_mods = { width = widths.network_id, horizontal_align = "center" } },
			templates.small_slot_table(widths, color, "provided_requested"),
			templates.small_slot_table(widths, color, "shipments"),
			templates.small_slot_table(widths, color, "control_signals"),
		})

		gui.add(row, {
			{
				elem_mods = { caption = station.entity_stop.name },
				handler = stations_tab.hande.open_station_gui,
				tags = station_id,
			},
			{ elem_mods = { caption = station.network_name } },
			{ elem_mods = { caption = station.network_flag } },
		})

		util.slot_table_update(row.provided_requested_frame.provided_requested_table, {
			{ color = "green", entries = station.provided, translations = dictionaries.materials },
			{ color = "red", entries = station.requested, translations = dictionaries.materials },
		})
		util.slot_table_update(row.shipments_frame.shipments_table, {
			{ color = "green", entries = station.inbound, translations = dictionaries.materials },
			{ color = "blue", entries = station.outbound, translations = dictionaries.materials },
		})
		util.slot_table_update(row.control_signals_frame.control_signals_table, {
			{
				color = "default",
				entries = station.control_signals,
				translations = dictionaries.virtual_signals,
				type = "virtual-signal",
			},
		})
	end

	if #stations_sorted == 0 then
		refs.warning_flow.visible = true
		scroll_pane.visible = false
		refs.content_frame.style = "ltnm_main_warning_frame"
	else
		refs.warning_flow.visible = false
		scroll_pane.visible = true
		refs.content_frame.style = "ltnm_main_content_frame"
	end
end


stations_tab.hande = {}

function stations_tab.hande.open_station_gui()
end

return stations_tab