-- route player input to the right functions;
-- return true when the right function has been found
minetest.register_on_player_receive_fields( function(player, formname, fields)
	if     formname == "yl_speak_up:optiondialog" then
		yl_speak_up.input_optiondialog(player, formname, fields)
		return true
	elseif formname == "yl_speak_up:setdialog" then
		yl_speak_up.input_setdialog(player, formname, fields)
		return true
	elseif formname == "yl_speak_up:confirm_save" then
		yl_speak_up.input_confirm_save(player, formname, fields)
		return true
	-- handled in fs_edit_options_dialog.lua
	elseif formname == "yl_speak_up:edit_option_dialog" then
		yl_speak_up.input_edit_option_dialog(player, formname, fields)
		return true
	elseif formname == "yl_speak_up:talk" then
		yl_speak_up.input_talk(player, formname, fields)
		return true
	elseif formname == "yl_speak_up:fashion" then
		yl_speak_up.input_fashion(player, formname, fields)
		return true
	-- handled in inventory.lua
	elseif formname == "yl_speak_up:inventory" then
		yl_speak_up.input_inventory(player, formname, fields)
		return true
	-- handled in trade_list.lua
	elseif formname == "yl_speak_up:trade_list" then
		yl_speak_up.input_trade_list(player, formname, fields)
		return true
	-- handled in trade_simple.lua
	elseif formname == "yl_speak_up:do_trade_simple" then
		yl_speak_up.input_do_trade_simple(player, formname, fields)
		return true
	-- (as above - also handled in trade_simple.lua)
	elseif formname == "yl_speak_up:add_trade_simple" then
		yl_speak_up.input_add_trade_simple(player, formname, fields)
		return true
	-- handled in fs_initial_config.lua
	elseif formname == "yl_speak_up:initial_config" then
		yl_speak_up.input_fs_initial_config(player, formname, fields)
		return true
	-- handled in fs_edit_preconditions.lua
	elseif formname == "yl_speak_up:edit_preconditions" then
		yl_speak_up.input_fs_edit_preconditions(player, formname, fields)
		return true
	-- handled in fs_edit_actions.lua
	elseif formname == "yl_speak_up:edit_actions" then
		yl_speak_up.input_fs_edit_actions(player, formname, fields)
		return true
	-- handled in fs_edit_actions.lua
	elseif formname == "yl_speak_up:action_npc_gives" then
		yl_speak_up.input_fs_action_npc_gives(player, formname, fields)
		return true
	elseif formname == "yl_speak_up:action_npc_wants" then
		yl_speak_up.input_fs_action_npc_wants(player, formname, fields)
		return true
	elseif formname == "yl_speak_up:action_text_input" then
		yl_speak_up.input_fs_action_text_input(player, formname, fields)
		return true
	elseif formname == "yl_speak_up:action_custom" then
		yl_speak_up.input_fs_action_custom(player, formname, fields)
		return true
	-- handled in fs_edit_effects.lua
	elseif formname == "yl_speak_up:edit_effects" then
		yl_speak_up.input_fs_edit_effects(player, formname, fields)
		return true
	end
end)


-- call show_formspec with the right input_* function for the right formspec
-- (handles all show_formspec-calls)
yl_speak_up.show_fs = function(player, fs_name, param)
	if(not(player)) then
		return
	end
	local pname = player:get_player_name()

	-- this is here mostly to fascilitate debugging - so that really all calls to
	-- minetest.show_formspec are routed through here
	if(fs_name == "msg") then
		if(not(param)) then
			param = {}
		end
		minetest.show_formspec(pname, param.input_to, param.formspec)


	-- staff-based editing
	elseif(fs_name == "optiondialog") then
		if(not(param)) then
			param = {}
		end
		minetest.show_formspec(pname, "yl_speak_up:optiondialog",
			yl_speak_up.get_fs_optiondialog(player, param.n_id, param.d_id, param.o_id, param.p_id, param.r_id))

	elseif(fs_name == "setdialog") then
		if(not(param)) then
			param = {}
		end
		minetest.show_formspec(pname, "yl_speak_up:setdialog",
			yl_speak_up.get_fs_setdialog(player, param.n_id, param.d_id))

	-- "confirm_save" does not have its own option here; doesn't have a get_fs_-function either

	elseif(fs_name == "edit_option_dialog") then
		-- the optional "caller" parameter can be used for debugging
		if(not(param)) then
			param = {}
		end
		minetest.show_formspec(pname, "yl_speak_up:edit_option_dialog",
			yl_speak_up.get_fs_edit_option_dialog(player, param.n_id, param.d_id, param.o_id))

	elseif(fs_name == "talk") then
		if(not(param)) then
			param = {}
		end
		minetest.show_formspec(pname, "yl_speak_up:talk",
			yl_speak_up.get_fs_talkdialog(player, param.n_id, param.d_id))

	elseif(fs_name == "fashion") then
		minetest.show_formspec(pname, "yl_speak_up:fashion",
			yl_speak_up.get_fs_fashion(pname))

	elseif(fs_name == "inventory") then
		minetest.show_formspec(pname, "yl_speak_up:inventory",
			yl_speak_up.get_fs_inventory(player))

	elseif(fs_name == "trade_list") then
		minetest.show_formspec(pname, "yl_speak_up:trade_list",
			yl_speak_up.get_fs_trade_list(player, param))

	elseif(fs_name == "trade_simple") then
		-- the optional parameter param is the trade_id
		if(not(param) and yl_speak_up.speak_to[pname]) then
			param = yl_speak_up.speak_to[pname].trade_id
		end
		minetest.show_formspec(pname, "yl_speak_up:do_trade_simple",
			yl_speak_up.get_fs_trade_simple(player, param))

	elseif(fs_name == "add_trade_simple") then
		-- the optional parameter param is the trade_id
		if(not(param) and yl_speak_up.speak_to[pname]) then
			param = yl_speak_up.speak_to[pname].trade_id
		end
		minetest.show_formspec(pname, "yl_speak_up:add_trade_simple",
			yl_speak_up.get_fs_add_trade_simple(player, param))

	elseif(fs_name == "initial_config") then
		if(not(param)) then
			param = {}
		end
		minetest.show_formspec(pname, "yl_speak_up:initial_config",
			yl_speak_up.get_fs_initial_config(player, param.n_id, param.d_id,
				param.is_initial_config))

	elseif(fs_name == "edit_preconditions") then
		minetest.show_formspec(pname, "yl_speak_up:edit_preconditions",
			yl_speak_up.get_fs_edit_preconditions(player, param))

	elseif(fs_name == "edit_actions") then
		minetest.show_formspec(pname, "yl_speak_up:edit_actions",
			yl_speak_up.get_fs_edit_actions(player, param))

	elseif(fs_name == "edit_effects") then
		minetest.show_formspec(pname, "yl_speak_up:edit_effects",
			yl_speak_up.get_fs_edit_effects(player, param))

	-- action related
	elseif(fs_name == "action_npc_gives") then
		minetest.show_formspec(pname, "yl_speak_up:action_npc_gives",
			yl_speak_up.get_fs_action_npc_gives(player, param))

	elseif(fs_name == "action_npc_wants") then
		minetest.show_formspec(pname, "yl_speak_up:action_npc_wants",
			yl_speak_up.get_fs_action_npc_wants(player, param))

	elseif(fs_name == "action_text_input") then
		minetest.show_formspec(pname, "yl_speak_up:action_text_input",
			yl_speak_up.get_fs_action_text_input(player, param))

	elseif(fs_name == "action_custom") then
		minetest.show_formspec(pname, "yl_speak_up:action_custom",
			yl_speak_up.get_fs_action_npc_gives(player, param))

	-- fallback in case of wrong call
	else
		minetest.chat_send_player(pname, "Error: Trying to show wrong "..
			"formspec: \""..tostring(fs_name).."\". Please notify "..
			"an admin.")
	end
end