minetest.register_chatcommand("protect", {
	params = "<AreaName>",
	description = "Protect your own area",
	privs = {[areas.self_protection_privilege]=true},
	func = function(name, param)
		if param ~= "" then

			local pos1, pos2 = {}, {}
			if areas:getPos1(name) and areas:getPos2(name) then
				pos1 = areas:getPos1(name)
				pos2 = areas:getPos2(name)
				pos1, pos2 = areas:sortPos(pos1, pos2)
			else
				minetest.chat_send_player(name, 'You need to select an area first')
				return
			end

			minetest.log("action", "/protect invoked, owner="..name..
					" areaname="..param..
					" startpos="..minetest.pos_to_string(pos1)..
					" endpos="  ..minetest.pos_to_string(pos2))

			local canAdd, errMsg = areas:canPlayerAddArea(pos1, pos2, name)
			if not canAdd then
				minetest.chat_send_player(name, "You can't protect that area: "..errMsg)
				return
			end

			areas:add(name, param, pos1, pos2, nil)
			areas:save()
		
			minetest.chat_send_player(name, "Area protected")
		else
			minetest.chat_send_player(name, 'Invalid usage, see /help protect')
		end
end})


minetest.register_chatcommand("set_owner", {
	params = "<PlayerName> <AreaName>",
	description = "Protect an area beetween two positions and give a player access to it without setting the parent of the area to any existing area",
	privs = {areas=true},
	func = function(name, param)
		if param and param ~= "" then
			local found, _, ownername, areaname = param:find('^([^%s]+)%s(.+)$')

			if not found then
				minetest.chat_send_player(name, "Incorrect usage, see /help set_owner")
				return
			end

			local pos1, pos2 = {}, {}
			if areas:getPos1(name) and areas:getPos2(name) then
				pos1 = areas:getPos1(name)
				pos2 = areas:getPos2(name)
				pos1, pos2 = areas:sortPos(pos1, pos2)
			else
				minetest.chat_send_player(name, 'You need to select an area first')
				return
			end

			if not areas:player_exists(ownername) then
				minetest.chat_send_player(name, 'The player "'..ownername..'" does not exist')
				return
			end

			--local canAdd, errMsg = areas:canPlayerAddArea(pos1, pos2, name)
			--if not canAdd then
			--	minetest.chat_send_player(name, "You can't protect that area: "..errMsg)
			--	return
			--end

			minetest.log("action", "/set_owner invoked, Owner="..ownername..
					" AreaName="..areaname..
					" StartPos="..minetest.pos_to_string(pos1)..
					" EndPos="  ..minetest.pos_to_string(pos2))

			areas:add(ownername, areaname, pos1, pos2, nil)
			areas:save()
		
			minetest.chat_send_player(ownername, "A concession has been granted to you! Type /list_areas to show your concessions.")
			minetest.chat_send_player(name, "Area protected")
		else
			minetest.chat_send_player(name, 'Invalid usage, see /help set_owner')
		end
end})


minetest.register_chatcommand("add_owner", {
	params = "<ParentID> <Player> <AreaName>",
	description = "Give a player access to a sub-area beetween two positions that have already been protected, use set_owner if you don't want the parent to be set",
	privs = {},
	func = function(name, param)
		if param and param ~= "" then
			local found, _, pid, ownername, areaname = param:find('^(%d+)%s([^%s]+)%s(.+)$')

			if not found then
				minetest.chat_send_player(name, "Incorrect usage, see /help set_owner")
				return
			end

			local pos1, pos2 = {}, {}
			if areas:getPos1(name) and areas:getPos2(name) then
				pos1 = areas:getPos1(name)
				pos2 = areas:getPos2(name)
				pos1, pos2 = areas:sortPos(pos1, pos2)
			else
				minetest.chat_send_player(name, 'You need to select an area first')
				return
			end

			if not areas:player_exists(ownername) then
				minetest.chat_send_player(name, 'The player "'..ownername..'" does not exist')
				return
			end

			minetest.log("action", "add_owner invoked, Owner = "..ownername..
					" AreaName = "..areaname.." ParentID = "..pid..
					" StartPos = "..pos1.x..","..pos1.y..","..pos1.z..
					" EndPos = "  ..pos2.x..","..pos2.y..","..pos2.z)

			--Look to see if this new area is inside an area owned by the player using this function
			pid = tonumber(pid)
			if (not areas:isAreaOwner(pid, name)) or
			   (not areas:isSubarea(pos1, pos2, pid)) then
				minetest.chat_send_player(name, "You can't protect that area")
				return
			end

			areas:add(ownername, areaname, pos1, pos2, pid)
			areas:save()
		
			minetest.chat_send_player(ownername, "A concession has been granted to you! Type /list_areas to show your concessions.")
			minetest.chat_send_player(name, "You granted "..ownername.." a concession successfully!")
		else
			minetest.chat_send_player(name, 'Invalid usage, see /help add_owner')
		end
end})


minetest.register_chatcommand("rename_area", {
	params = "<ID> <newName>",
	description = "Rename a area that you own",
	privs = {},
	func = function(name, param)
	local found, _, id, newName = param:find("^(%d+)%s(.+)$")

	if not found then
		minetest.chat_send_player(name, "Invalid usage, see /help rename_area")
		return
	end

	index = areas:getIndexById(tonumber(id))

	if not index then
		minetest.chat_send_player(name, "That area doesn't exist")
		return
	end

	if not areas:isAreaOwner(id, name) then
		minetest.chat_send_player(name, "You don't own that area")
		return
	end

	areas.areas[index].name = newName
	areas:save()
end})


minetest.register_chatcommand("list_owners", {
	params = "",
	description = "list the players that can edit the area you are in",
	privs = {},
	func = function(name, param)
		local owners = areas:getNodeOwners(vector.round(minetest.get_player_by_name(name):getpos()))
		if #owners > 0 then
			minetest.chat_send_player(name, "Owners: "..table.concat(owners, ", "))
		else
			minetest.chat_send_player(name, "Your position is unowned")
		end
end})


minetest.register_chatcommand("find_areas", {
	params = "<regexp>",
	description = "Find areas using a Lua regular expression",
	privs = {},
	func = function(name, param)
		if param and param ~= "" then
			local found = false
			for _, area in pairs(areas.areas) do
				if areas:isAreaOwner(area.id, name) and
				   areas:toString(area):find(param) then
					minetest.chat_send_player(name, areas:toString(area))
					found = true
				end
			end
			if not found then
				minetest.chat_send_player(name, "No matches found")
			end
		else
			minetest.chat_send_player(name, "Regular expression required")
		end
end})


minetest.register_chatcommand("list_areas", {
	params = "",
	description = "list the areas you own, or all areas if you have privileges",
	privs = {},
	func = function(name, param)
		admin = minetest.check_player_privs(name, {areas=true})
		if admin then
			minetest.chat_send_player(name, "Showing all owner entries.")
		else
			minetest.chat_send_player(name, "Showing your owner entries (You can only modify these).")
		end
		for _, area in pairs(areas.areas) do
			if admin or area.owner == name then
				minetest.chat_send_player(name, areas:toString(area))
			end
		end
end})


minetest.register_chatcommand("recursive_remove_areas", {
	params = "<id>",
	description = "Recursively remove areas using an id",
	privs = {},
	func = function(name, param)
		local id = tonumber(param)
		if not id then
			minetest.chat_send_player(name, 'Invalid usage, see /help recursive_remove_areas')
			minetest.chat_send_player(name, 'Use /list_areas to see entries')
			return
		end

		if areas:isAreaOwner(id, name) then
			areas:remove(id, true)
			areas:sort()
			areas:save()
		else
			minetest.chat_send_player(name, "Area "..id.." does not exist or is not owned by you")
			return
		end
		minetest.chat_send_player(name, 'Removed area '..id..'and sub areas')
end})


minetest.register_chatcommand("remove_area", {
	params = "<id>",
	description = "Remove an area using an id",
	privs = {},
	func = function(name, param)
		local id = tonumber(param)
		if not id then
			minetest.chat_send_player(name, 'Invalid usage, see /help remove_area')
			minetest.chat_send_player(name, 'Use /list_areas to see entries')
			return
		end

		if areas:isAreaOwner(id, name) then
			areas:remove(id, false)
			areas:sort()
			areas:save()
		else
			minetest.chat_send_player(name, "Area "..id.." does not exist or is not owned by you")
			return
		end
		minetest.chat_send_player(name, 'Removed area '..id)
end})


minetest.register_chatcommand("change_owner", {
	params = "<id> <newplayer>",
	description = "change the owner of an area using its id",
	privs = {},
	func = function(name, param)
		local found, _, id, new_owner = param:find('^(%d+)%s+([^%s]+)$')
		
		if not found then
			minetest.chat_send_player(name, 'Invalid usage, see /help change_area_owner')
			minetest.chat_send_player(name, 'Use /list_areas to see entries')
			return
		end
		
		if not areas:player_exists(new_owner) then
			minetest.chat_send_player(name, 'The player "'..new_owner..'" does not exist')
			return
		end

		id = tonumber(id)
		if areas:isAreaOwner(id, name) then
			areas.areas[areas:getIndexById(id)].owner = new_owner
			areas:save()
			minetest.chat_send_player(name, 'Owner changed succesfully')
			minetest.chat_send_player(new_owner, name..'" has granted you a concession!')
		else
			minetest.chat_send_player(new_owner, "Area "..id.." does not exist or is not owned by you")
		end
end})