AddCSLuaFile()
if SERVER then return end
local nadmin = include("sh_nadmin.lua")

--Functions
local add_group_to_groupsheet
local remove_group_from_groupsheet

--Override what print() does, just for this file
local oldprint = print
local print = function(...)
	local args = {...}
	table.insert(args,1,"[NADMIN]")
	oldprint(unpack(args))
end

local usergroup_dropdowns = {}
local function add_usergroup_to_usergroup_dropdowns(name)
	for k,v in pairs(usergroup_dropdowns) do
		if v:IsValid() then
			v:AddChoice(name)
		else
			usergroup_dropdowns[k] = nil
		end
	end
end
local function delete_usergroup_from_usergroup_dropdowns(group)
	for _,v in pairs(usergroup_dropdowns) do
		table.RemoveByValue(v.Choices, name)
		if v.Menu then
			v.Menu:Remove()
			v.Menu = nil
		end
		if v:GetText() == group.group.Name then
			v:SetText(group.group.MinAccess)
		end
	end
end

net.Receive("nadmin_init_privileges", function(len)
	nadmin.privileges = net.ReadTable()
end)
net.Receive("nadmin_init_players", function(len)
	nadmin.players = net.ReadTable()
end)
net.Receive("nadmin_init_groups", function(len)
	nadmin.groups = net.ReadTable()
end)

net.Receive("nadmin_update_privilege", function(len)
	local exists = net.ReadBool()
	local privilege = net.ReadTable()
	if exists then
		nadmin.privileges[privilege.Name] = privilege
	else
		nadmin.privileges[privilege.Name] = nil
	end
end)
net.Receive("nadmin_create_group", function(len)
	local name = net.ReadString()
	local inherits = net.ReadString()
	local source = net.ReadString()
	nadmin.groups[name] = {
		name = name,
		group = {
			Name = name,
			Inherits = inherits
		},
		privileges = {},
		nadmin = source == "nadmin",
		src = source
	}
	add_group_to_groupsheet(nadmin.groups[name])
	add_usergroup_to_usergroup_dropdowns(name)
	CAMI.RegisterUsergroup(nadmin.groups[name].group, "nadmin")
end)
net.Receive("nadmin_update_group", function(len)
	local name = net.ReadString()
	local privilege = net.ReadString()
	local exists = net.ReadBool()
	if exists then
		nadmin.groups[name].privileges[privilege] = exists 
	else
		nadmin.groups[name].privileges[privilege] = nil
	end
end)
net.Receive("nadmin_delete_group", function(len)
	local name = net.ReadString()
	remove_group_from_groupsheet(nadmin.groups[name])
	delete_usergroup_from_usergroup_dropdowns(nadmin.groups[name])
	nadmin.groups[name] = nil
	CAMI.UnregisterUsergroup(name,"nadmin")
end)
net.Receive("nadmin_update_player", function(len)
	local player = net.ReadEntity()
	local group = net.ReadString()
	local sid = player:SteamID64()
	nadmin.players[sid] = nadmin.players[sid] or {}
	nadmin.players[sid].group = group
	nadmin.players[sid].last_name = player:Name()
	if nadmin.players[sid].combo then
		nadmin.players[sid].combo:SetValue(group)
	end
	if nadmin.players[sid].line then
		nadmin.players[sid].line:SetColumnText(2,player:Name())
	end
	CAMI.SignalSteamIDUserGroupChanged(sid,group,"nadmin")
end)

local function create_usergroup_combo(parent)
	local ret = vgui.Create("DComboBox",parent)
	for groupname, _ in pairs(nadmin.groups) do
		ret:AddChoice(groupname)
	end
	table.insert(usergroup_dropdowns, ret)
	return ret
end

local nadmin_frame,users_tbl,groups_tbl = nil,nil,nil
local users_sheet,groups_sheet = nil,nil
--ply :: entity
local function add_user_to_usersheet(steamid,ply)
	if not nadmin_frame then return end
	local player_ent = player.GetBySteamID64(steamid)
	local line = users_tbl:AddLine(steamid, ply.last_name, ply.group)
	local dropdown = create_usergroup_combo(line)
	if nadmin.players[steamid] then
		dropdown:SetValue(nadmin.players[steamid].group)
	else
		dropdown:SetValue("user")
	end
	dropdown.OnSelect = function(self, index, value)
		net.Start("nadmin_request_set_user_group")
		net.WriteEntity(player_ent)
		net.WriteString(value)
		net.SendToServer()
	end
	line:SetColumnText(3,dropdown)
	ply.combo = dropdown --Update the combo box when someone else updates the group
	ply.line = line
end

--ply :: entity
local function remove_user_from_usersheet(ply)
	if not nadmin_frame then return end
	if not ply.line then return end
	users_tbl:RemoveLine(ply.line.m_iID)
end

local privilege_checkboxes = {}
local function add_privilege_to_groupsheet(privilege)
	local ordered_privileges = {}
	for _,privilege in pairs(nadmin.privileges) do
		table.insert(ordered_privileges,privilege)
	end
	table.sort(ordered_privileges, function(a,b) return a.Name > b.Name end)
	local privilege_num = 0
	for num,ordered_privilege in pairs(ordered_privileges) do
		if ordered_privilege == privilege then
			privilege_num = num
			break
		end
	end
	local column = groups_tbl:AddColumn(privilege.Name)
	column.DoClick = function(self)
		local explain_frame = vgui.Create("DFrame")
		explain_frame:SetTitle(privilege.Name)
		local description = vgui.Create("DLabel",explain_frame)
		description:SetWrap(true)
		if privilege.Description then
			description:SetText(privilege.Description)
		else
			description:SetText("This privilege does not have a description")
		end
		explain_frame:SetSize(ScrW() / 6, ScrH() / 4)
		explain_frame:SetPos(ScrW() / 4 + 100,ScrH() / 4 + 50)
		explain_frame:MakePopup()
		description:Dock(FILL)
	end
	column:SetWrap(true)
	for groupname,group in pairs(nadmin.groups) do
		local checkbox = vgui.Create("DCheckBox", group.line)
		privilege_checkboxes[groupname] = checkbox
		if group.nadmin then
			checkbox:SetChecked(group.privileges[privilege.Name])
			checkbox.OnChange = function(self,value)
				net.Start("nadmin_request_update_group")
				net.WriteString(groupname)
				net.WriteString(privilege.Name)
				net.WriteBool(value)
				net.SendToServer()
			end
		else
			checkbox:SetDisabled(true)
		end
		group.line:SetColumnText(privilege_num + 2,checkbox)
	end
end

local function remove_privilege_from_groupsheet(privilege)

end

add_group_to_groupsheet = function(group)
	if not groups_tbl then return end
	local line = groups_tbl:AddLine(group.group.Name)
	local ordered_privileges = {}
	for _,privilege in pairs(nadmin.privileges) do
		table.insert(ordered_privileges,privilege)
	end
	table.sort(ordered_privileges, function(a,b) return a.Name > b.Name end)
	local delete_group_button = vgui.Create("DButton",line)
	delete_group_button:SetText("-")
	delete_group_button:SetEnabled(group.nadmin)
	delete_group_button.DoClick = function(self)
		net.Start("nadmin_request_delete_group")--(group :: string)
		net.WriteString(group.group.Name)
		net.SendToServer()
	end
	line:SetColumnText(2,delete_group_button)
	for n,privilege_name in pairs(ordered_privileges) do
		local privilege_checkbox = vgui.Create("DCheckBox",line)
		line:SetColumnText(n + 2,privilege_checkbox)
		if group.nadmin then
			privilege_checkbox:SetChecked(group.privileges[privilege_name])
			privilege_checkbox.OnChange = function(self,val)
				net.Start("nadmin_request_update_group") --(group :: string, privilege :: string, set :: bool)
				net.WriteString(group.group.Name)
				net.WriteString(privilege_name.Name)
				net.WriteBool(val)
				net.SendToServer()
			end
		else
			privilege_checkbox:SetDisabled(true)
		end
	end
	group.line = line
	group.line_id = #groups_tbl.Lines
end

function remove_group_from_groupsheet(group)
	groups_tbl:RemoveLine(group.line_id)
end

local function create_new_group_dialog()
	local dialog = vgui.Create("DFrame")
	dialog:SetTitle("Create Group")

	local inherits_label = vgui.Create("DLabel",dialog)
	inherits_label:Dock(TOP)
	inherits_label:SetText("Inherits from")

	local inherits = create_usergroup_combo(dialog)
	inherits:Dock(TOP)

	local groupname_label = vgui.Create("DLabel",dialog)
	groupname_label:Dock(TOP)
	groupname_label:SetText("Group Name")

	local groupname = vgui.Create("DTextEntry",dialog)
	groupname:Dock(TOP)

	local createbtn = vgui.Create("DButton",dialog)
	createbtn:SetText("Create Group")
	createbtn.DoClick = function(self)
		net.Start("nadmin_request_create_group")
		net.WriteString(groupname:GetText())
		net.WriteString(inherits:GetText())
		net.SendToServer()
		dialog:Close()
	end
	createbtn:Dock(BOTTOM)
	
	dialog:SetSize(250,150)
	dialog:Center()
	dialog:MakePopup()
end

local function create_nadmin_panel()
	if nadmin_frame ~= nil and nadmin_frame:IsValid() then
		nadmin_frame:SetVisible(true)
		return
	end
	
	nadmin_frame = vgui.Create("DFrame")
	nadmin_frame:SetTitle("nAdmin")
	nadmin_frame.OnClose = function(self)
		self:SetVisible(false)
		return false
	end
	nadmin_frame:SetSizable(true)
	local prop_sheet = vgui.Create("DPropertySheet",nadmin_frame)
	prop_sheet:Dock(FILL)
	users_tbl = vgui.Create("DListView",prop_sheet)
	users_tbl:AddColumn("SteamID")
	users_tbl:AddColumn("Name")
	users_tbl:AddColumn("Group")
	for steamid,player in pairs(nadmin.players) do
		add_user_to_usersheet(steamid,player)
	end

	prop_sheet:AddSheet("Users",users_tbl,nil,true,true,"Sets users to particular groups")

	users_tbl:Dock(FILL)

	local groups_scroller = vgui.Create("DHorizontalScroller",prop_sheet)
	groups_tbl = vgui.Create("DListView",groups_scroller)
	groups_scroller:Dock(FILL)
	local gcol = groups_tbl:AddColumn("Group")
	local dcol = groups_tbl:AddColumn("Delete")
	gcol:SetEnabled(false)
	dcol:SetEnabled(false)
	local tot_columns = 0
	local tot_width = 0
	--Don't do anything if the user clicks the Group or Delete headers
	for _,v in pairs(groups_tbl.Columns) do
		v.DoClick = function() end
	end
	local add_line = groups_tbl:AddLine("")
	local add_btn = vgui.Create("DButton",add_line)
	add_btn:SetText("+")
	add_btn.DoClick = function(self)
		create_new_group_dialog()
	end
	add_line:SetColumnText(1,add_btn)
	for groupname,group in pairs(nadmin.groups) do
		tot_columns = tot_columns + 1
		add_group_to_groupsheet(group)
		tot_width = tot_width + string.len(groupname)*30 --10 pixels for each character?
	end

	for privilegename, privilege in pairs(nadmin.privileges) do
		add_privilege_to_groupsheet(privilege)
	end
	groups_tbl:SetWidth(tot_width)
	prop_sheet:AddSheet("Groups",groups_scroller,nil,true,true,"Set the privileges for a group")
	groups_scroller:AddPanel(groups_tbl)

	nadmin_frame:SetSize(ScrW() / 2, ScrH() / 2)
	nadmin_frame:SetPos(ScrW() / 4, ScrH() / 4)
	nadmin_frame:MakePopup()
end

concommand.Add("cl_nadmin", function(ply,cmd,args)
	create_nadmin_panel()
end)
concommand.Add("cl_nadmin_new", function(ply,cmd,args)
	nadmin_frame = nil
	create_nadmin_panel()
end)