GLOBAL_LIST_EMPTY(gas_sensors)

#define SENSOR_PRESSURE 1
#define SENSOR_TEMPERATURE 2
#define SENSOR_O2 4
#define SENSOR_PLASMA 8
#define SENSOR_N2 16
#define SENSOR_CO2 32
#define SENSOR_N2O 64

/obj/machinery/atmospherics/air_sensor
	icon = 'icons/obj/stationobjs.dmi'
	icon_state = "gsensor1"
	resistance_flags = FIRE_PROOF
	name = "gas sensor"

	anchored = TRUE
	var/state = 0
	var/bolts = TRUE

	on = TRUE
	var/output = SENSOR_PRESSURE | SENSOR_TEMPERATURE
	//Flags: (see lines 3-9)
	// 1 for pressure
	// 2 for temperature
	// Output >= 4 includes gas composition
	// 4 for oxygen concentration
	// 8 for toxins concentration
	// 16 for nitrogen concentration
	// 32 for carbon dioxide concentration
	// 64 for nitrous dioxide concentration

/obj/machinery/atmospherics/air_sensor/Initialize(mapload)
	. = ..()
	GLOB.gas_sensors += src

/obj/machinery/atmospherics/air_sensor/Destroy()
	GLOB.gas_sensors -= src
	return ..()

/obj/machinery/atmospherics/air_sensor/update_icon_state()
	icon_state = "gsensor[on]"

/obj/machinery/atmospherics/air_sensor/wrench_act(mob/user, obj/item/I)
	if(bolts)
		to_chat(usr, "[src] is bolted to the floor! You can't detach it like this.")
		return

	. = TRUE
	if(!I.use_tool(src, user, 40, volume = I.tool_volume))
		return

	user.visible_message("[user] unfastens \the [src].", "<span class='notice'>You have unfastened \the [src].</span>", "You hear ratchet.")
	new /obj/item/pipe_gsensor(loc)
	qdel(src)
	playsound(src, 'sound/items/deconstruct.ogg', 50, 1)

#define ONOFF_TOGGLE(flag) "\[[(output & flag) ? "YES" : "NO"]]"
/obj/machinery/atmospherics/air_sensor/multitool_act(mob/living/user, obj/item/I)
	while(Adjacent(user))

		var/list/options = list(
			"Pressure: [ONOFF_TOGGLE(SENSOR_PRESSURE)]" = SENSOR_PRESSURE,
			"Temperature: [ONOFF_TOGGLE(SENSOR_TEMPERATURE)]" = SENSOR_TEMPERATURE,
			"Oxygen: [ONOFF_TOGGLE(SENSOR_O2)]" = SENSOR_O2,
			"Toxins: [ONOFF_TOGGLE(SENSOR_PLASMA)]" = SENSOR_PLASMA,
			"Nitrogen: [ONOFF_TOGGLE(SENSOR_N2)]" = SENSOR_N2,
			"Carbon Dioxide: [ONOFF_TOGGLE(SENSOR_CO2)]" = SENSOR_CO2,
			"Nitrous Oxide: [ONOFF_TOGGLE(SENSOR_N2O)]" = SENSOR_N2O,
			"-SAVE TO BUFFER-" = "multitool"
		)

		var/temp_answer = tgui_input_list(user, "Select an option to adjust", "Options!", options)

		if(!Adjacent(user))
			break

		if(temp_answer in options) // Null will break us out
			switch(options[temp_answer])
				if(SENSOR_PRESSURE)
					output ^= SENSOR_PRESSURE
				if(SENSOR_TEMPERATURE)
					output ^= SENSOR_TEMPERATURE
				if(SENSOR_O2)
					output ^= SENSOR_O2
				if(SENSOR_PLASMA)
					output ^= SENSOR_PLASMA
				if(SENSOR_N2)
					output ^= SENSOR_N2
				if(SENSOR_CO2)
					output ^= SENSOR_CO2
				if(SENSOR_N2O)
					output ^= SENSOR_N2O
				if("multitool")
					if(!ismultitool(I)) // Should never happen
						return

					var/obj/item/multitool/M = I
					M.buffer_uid = UID()
					to_chat(user, "<span class='notice'>You save [src] into [M]'s buffer</span>")
		else
			break

	return TRUE
#undef ONOFF_TOGGLE




/obj/machinery/computer/general_air_control
	name = "air sensor monitor"
	icon = 'icons/obj/computer.dmi'
	icon_screen = "tank"
	icon_keyboard = "atmos_key"
	circuit = /obj/item/circuitboard/air_management
	// Map set vars
	/// List of sensors to autolink to. Key = sensor_id, Value = sensor display name
	var/list/autolink_sensors = list()

	// Instanced vars. These are /tmp/ to avoid mappers trying to set them
	/// List of sensor names to UIDs to be used in the display
	var/tmp/list/sensor_name_uid_map = list()
	/// List of sensor names to cache lists used in the display TGUI
	var/tmp/list/sensor_name_data_map = list()

/obj/machinery/computer/general_air_control/Initialize()
	..()
	return INITIALIZE_HINT_LATELOAD // Do all our work in here

/obj/machinery/computer/general_air_control/LateInitialize()
	// Setup sensors
	for(var/obj/machinery/atmospherics/air_sensor/AS as anything in GLOB.gas_sensors)
		for(var/sensor_id in autolink_sensors)
			if(AS.autolink_id == sensor_id)
				sensor_name_uid_map[autolink_sensors[sensor_id]] = AS.UID()
				sensor_name_data_map[autolink_sensors[sensor_id]] = list()

	// Setup meters
	for(var/obj/machinery/atmospherics/meter/GM as anything in GLOB.gas_meters)
		for(var/meter_id in autolink_sensors)
			if(GM.autolink_id == meter_id)
				sensor_name_uid_map[autolink_sensors[meter_id]] = GM.UID()
				sensor_name_data_map[autolink_sensors[meter_id]] = list()

/obj/machinery/computer/general_air_control/attack_hand(mob/user)
	ui_interact(user)

/obj/machinery/computer/general_air_control/ui_state(mob/user)
	return GLOB.default_state

/obj/machinery/computer/general_air_control/ui_interact(mob/user, datum/tgui/ui = null)
	if(!isprocessing)
		START_PROCESSING(SSmachines, src)
		refresh_all()

	ui = SStgui.try_update_ui(user, src, ui)
	if(!ui)
		// We can use the same template here for sensors and for tanks with inlets/outlets with TGUI memes
		ui = new(user, src, "AtmosTankControl", name)
		ui.open()

/obj/machinery/computer/general_air_control/ui_data(mob/user)
	var/list/data = list()
	data["sensors"] = sensor_name_data_map // We can make this super cheap by sending our existing data
	return data

/obj/machinery/computer/general_air_control/multitool_act(mob/living/user, obj/item/I)
	if(!ismultitool(I)) // Should never happen
		return

	configure_sensors(user, I)
	return TRUE

// This is its own proc so it can be modified in child types
/obj/machinery/computer/general_air_control/proc/configure_sensors(mob/living/user, obj/item/multitool/M)
	var/choice = alert(user, "Would you like to add or remove a sensor/meter", "Configuration", "Add", "Remove", "Cancel")
	if((choice == "Cancel") || !Adjacent(user))
		return

	switch(choice)
		if("Add")
			// First see if they have a scrubber in their buffer
			var/datum/linked_datum = locateUID(M.buffer_uid)
			if(!linked_datum || !(istype(linked_datum, /obj/machinery/atmospherics/air_sensor) || istype(linked_datum, /obj/machinery/atmospherics/meter)))
				to_chat(user, "<span class='warning'>Error: No device in multitool buffer, or device is not a sensor or meter.</span>")
				return

			var/new_name = clean_input(user, "Enter a name for the sensor/meter", "Name")
			if(!new_name || !Adjacent(user))
				return

			sensor_name_uid_map[new_name] = linked_datum.UID() // Make sure the multitool ref didnt change while they had the menu open
			sensor_name_data_map[new_name] = list()
			to_chat(user, "<span class='notice'>Successfully added a new sensor/meter with name <code>[new_name]</code></span>")

		if("Remove")
			var/to_remove = tgui_input_list(user, "Select a sensor/meter to remove", "Sensor/Meter Removal", sensor_name_uid_map)
			if(!to_remove)
				return

			var/confirm = alert(user, "Are you sure you want to remove the sensor/meter '[to_remove]'?", "Warning", "Yes", "No")
			if((confirm != "Yes") || !Adjacent(user))
				return

			sensor_name_uid_map -= to_remove
			sensor_name_data_map -= to_remove
			to_chat(user, "<span class='notice'>Successfully removed sensor/meter with name <code>[to_remove]</code></span>")

// Makes overrides easier
/obj/machinery/computer/general_air_control/proc/refresh_all()
	refresh_sensors()

// Refreshes the sensors every so often, but only when the UI is opened
/obj/machinery/computer/general_air_control/proc/refresh_sensors()
	for(var/sensor_name in sensor_name_uid_map)
		var/obj/machinery/atmospherics/AM = locateUID(sensor_name_uid_map[sensor_name])
		if(QDELETED(AM))
			sensor_name_uid_map -= sensor_name
			sensor_name_data_map -= sensor_name
			continue

		if(istype(AM, /obj/machinery/atmospherics/air_sensor))
			// Cache here to avoid a ton of list lookups
			var/obj/machinery/atmospherics/air_sensor/AS = AM
			var/list/sensor_data = sensor_name_data_map[sensor_name]
			var/datum/gas_mixture/air_sample = AS.return_air()

			// We remove it from the list incase sensor reporting is ever disabled
			// We only want to show the information available
			if(AS.output & SENSOR_PRESSURE)
				sensor_data["pressure"] = air_sample.return_pressure()
			else
				sensor_data -= "pressure"

			if(AS.output & SENSOR_TEMPERATURE)
				sensor_data["temperature"] = air_sample.return_temperature()
			else
				sensor_data -= "temperature"

			var/total_moles = air_sample.total_moles()

			if(total_moles > 0)
				if(AS.output & SENSOR_O2)
					sensor_data["o2"] = round(100 * air_sample.oxygen / total_moles, 0.1)
				else
					sensor_data -= "o2"

				if(AS.output & SENSOR_PLASMA)
					sensor_data["plasma"] = round(100 * air_sample.toxins / total_moles, 0.1)
				else
					sensor_data -= "plasma"

				if(AS.output & SENSOR_N2)
					sensor_data["n2"] = round(100 * air_sample.nitrogen / total_moles, 0.1)
				else
					sensor_data -= "n2"

				if(AS.output & SENSOR_CO2)
					sensor_data["co2"] = round(100 * air_sample.carbon_dioxide / total_moles, 0.1)
				else
					sensor_data -= "co2"

				if(AS.output & SENSOR_N2O)
					sensor_data["n2o"] = round(100 * air_sample.sleeping_agent / total_moles, 0.1)
				else
					sensor_data -= "n2o"

		else if(istype(AM, /obj/machinery/atmospherics/meter))
			var/list/meter_data = sensor_name_data_map[sensor_name]
			var/obj/machinery/atmospherics/meter/the_meter = AM
			if(the_meter.target)
				var/datum/gas_mixture/meter_env = the_meter.target.return_air()
				if(meter_env)
					meter_data["pressure"] = meter_env.return_pressure()
					meter_data["temperature"] = meter_env.return_temperature()


/obj/machinery/computer/general_air_control/process()
	// We only care about refreshing if people are looking at us
	if(src in SStgui.open_uis_by_src)
		refresh_all()
		return

	return PROCESS_KILL

/obj/machinery/computer/general_air_control/large_tank_control
	circuit = /obj/item/circuitboard/large_tank_control

	// Map set vars
	/// Autolink ID of the chamber inlet injector
	var/inlet_injector_autolink_id
	/// Autolink ID of the chamber outlet vent
	var/outlet_vent_autolink_id

	// Instanced vars. These are /tmp/ to avoid mappers trying to set them
	/// The runtime UID of the inlet injector
	var/tmp/inlet_injector_uid
	/// The runtime UID of the outlet vent
	var/tmp/outlet_vent_uid

	/// UI holder list of the inlet data
	var/tmp/list/inlet_data = list()
	/// UI holder list of the outlet data
	var/tmp/list/outlet_data = list()

	/// Default outlet vent setting (About 4559.6)
	var/outlet_setting = ONE_ATMOSPHERE * 45
	/// Default inlet injector setting (50 L/s)
	var/inlet_setting = 50

/obj/machinery/computer/general_air_control/large_tank_control/LateInitialize()
	..()

	// Setup inlet
	if(inlet_injector_autolink_id)
		for(var/obj/machinery/atmospherics/unary/outlet_injector/OI as anything in GLOB.air_injectors)
			if(OI.autolink_id == inlet_injector_autolink_id)
				inlet_injector_uid = OI.UID() // OI!
				// Setup some defaults
				OI.on = TRUE
				OI.volume_rate = inlet_setting
				OI.update_icon()
				break

	// Setup outlet
	if(outlet_vent_autolink_id)
		for(var/obj/machinery/atmospherics/unary/vent_pump/VP as anything in GLOB.all_vent_pumps)
			if(VP.autolink_id == outlet_vent_autolink_id)
				outlet_vent_uid = VP.UID()
				get_area(VP).vents -= VP
				VP.on = TRUE
				VP.releasing = FALSE
				VP.internal_pressure_bound = outlet_setting
				VP.update_icon()
				break

/obj/machinery/computer/general_air_control/large_tank_control/multitool_act(mob/living/user, obj/item/I)
	if(!ismultitool(I)) // Should never happen
		return

	var/choice = tgui_input_list(user, "Configure what", "Configuration", list("Inlet", "Outlet", "Sensors", "Cancel"))
	if((!choice) || (choice == "Cancel") || !Adjacent(user))
		return

	switch(choice)
		if("Inlet")
			configure_inlet(user, I)
		if("Outlet")
			configure_outlet(user, I)
		if("Sensors")
			configure_sensors(user, I)

	return TRUE

/obj/machinery/computer/general_air_control/large_tank_control/proc/configure_inlet(mob/living/user, obj/item/multitool/M)
	var/choice = alert(user, "Would you like to add/replace the existing inlet or clear it?", "Configuration", "Add/Replace", "Clear", "Cancel")
	if((choice == "Cancel") || !Adjacent(user))
		return

	switch(choice)
		if("Add/Replace")
			// First see if they have a scrubber in their buffer
			var/datum/linked_datum = locateUID(M.buffer_uid)
			if(!linked_datum || !istype(linked_datum, /obj/machinery/atmospherics/unary/outlet_injector))
				to_chat(user, "<span class='warning'>Error: No device in multitool buffer, or device is not an injector.</span>")
				return

			inlet_injector_uid = linked_datum.UID() // Make sure the multitool ref didnt change while they had the menu open
			var/obj/machinery/atmospherics/unary/outlet_injector/OI = linked_datum
			// Setup some defaults
			OI.on = TRUE
			OI.volume_rate = inlet_setting
			OI.update_icon()
			refresh_inlet()
			to_chat(user, "<span class='notice'>Successfully set the inlet injector.</span>")

		if("Clear")
			if(inlet_injector_uid)
				// Lets be kind and turn it off first so its unwrenchable
				var/obj/machinery/atmospherics/unary/outlet_injector/OI = locateUID(inlet_injector_uid)
				if(!QDELETED(OI))
					OI.on = FALSE
					OI.update_icon()
				inlet_injector_uid = null
				refresh_inlet()
				to_chat(user, "<span class='notice'>Successfully unlinked inlet injector.</span>")
			else
				to_chat(user, "<span class='warning'>Error - No injector linked!</span>")


/obj/machinery/computer/general_air_control/large_tank_control/proc/configure_outlet(mob/living/user, obj/item/multitool/M)
	var/choice = alert(user, "Would you like to add/replace the existing outlet or clear it?", "Configuration", "Add/Replace", "Clear", "Cancel")
	if((choice == "Cancel") || !Adjacent(user))
		return

	switch(choice)
		if("Add/Replace")
			// First see if they have a scrubber in their buffer
			var/datum/linked_datum = locateUID(M.buffer_uid)
			if(!linked_datum || !istype(linked_datum, /obj/machinery/atmospherics/unary/vent_pump))
				to_chat(user, "<span class='warning'>Error: No device in multitool buffer, or device is not a vent pump.</span>")
				return

			outlet_vent_uid = linked_datum.UID() // Make sure the multitool ref didnt change while they had the menu open
			var/obj/machinery/atmospherics/unary/vent_pump/VP = linked_datum
			// Setup some defaults
			get_area(VP).vents -= VP
			VP.on = TRUE
			VP.releasing = FALSE
			VP.internal_pressure_bound = outlet_setting
			VP.update_icon()
			refresh_outlet()
			to_chat(user, "<span class='notice'>Successfully set the outlet vent</span>")

		if("Clear")
			if(outlet_vent_uid)
				// Lets be kind and turn it off first so its unwrenchable
				var/obj/machinery/atmospherics/unary/vent_pump/VP = locateUID(outlet_vent_uid)
				if(!QDELETED(VP))
					VP.on = FALSE
					VP.update_icon()
				outlet_vent_uid = null
				refresh_outlet()
				to_chat(user, "<span class='notice'>Successfully unlinked outlet vent.</span>")
			else
				to_chat(user, "<span class='warning'>Error - No vent linked!</span>")


/obj/machinery/computer/general_air_control/large_tank_control/proc/refresh_inlet()
	var/obj/machinery/atmospherics/unary/outlet_injector/OI = locateUID(inlet_injector_uid)
	if(QDELETED(OI))
		inlet_data = list()
		return

	inlet_data["on"] = OI.on
	inlet_data["rate"] = OI.volume_rate

/obj/machinery/computer/general_air_control/large_tank_control/proc/refresh_outlet()
	var/obj/machinery/atmospherics/unary/vent_pump/VP = locateUID(outlet_vent_uid)
	if(QDELETED(VP))
		outlet_data = list()
		return

	outlet_data["on"] = VP.on
	outlet_data["rate"] = VP.internal_pressure_bound

/obj/machinery/computer/general_air_control/large_tank_control/refresh_all()
	..()
	refresh_inlet()
	refresh_outlet()

/obj/machinery/computer/general_air_control/large_tank_control/ui_data(mob/user)
	. = ..()
	.["inlet"] = inlet_data
	.["outlet"] = outlet_data

/obj/machinery/computer/general_air_control/large_tank_control/ui_act(action, list/params)
	if(..())
		return

	switch(action)
		if("toggle_active")
			switch(params["dev"])
				if("inlet")
					var/obj/machinery/atmospherics/unary/outlet_injector/OI = locateUID(inlet_injector_uid)
					if(!QDELETED(OI))
						OI.on = !OI.on
						OI.update_icon()
						refresh_inlet()
				if("outlet")
					var/obj/machinery/atmospherics/unary/vent_pump/VP = locateUID(outlet_vent_uid)
					if(!QDELETED(VP))
						VP.on = !VP.on
						VP.update_icon()
						refresh_outlet()

		if("set_pressure")
			switch(params["dev"])
				if("inlet")
					var/obj/machinery/atmospherics/unary/outlet_injector/OI = locateUID(inlet_injector_uid)
					if(!QDELETED(OI))
						var/new_value = clamp(text2num(params["val"]), 0, 50)
						if(new_value)
							OI.volume_rate = new_value
							refresh_inlet()
				if("outlet")
					var/obj/machinery/atmospherics/unary/vent_pump/VP = locateUID(outlet_vent_uid)
					if(!QDELETED(VP))
						var/new_value = clamp(text2num(params["val"]), 0, (50 * ONE_ATMOSPHERE))
						if(new_value)
							VP.internal_pressure_bound = new_value
							refresh_outlet()

	return TRUE

// Central atmos control //
/obj/machinery/computer/atmoscontrol
	name = "\improper central atmospherics computer"
	icon = 'icons/obj/computer.dmi'
	icon_keyboard = "atmos_key"
	icon_screen = "tank"
	light_color = LIGHT_COLOR_CYAN
	circuit = /obj/item/circuitboard/atmoscontrol
	req_access = list(ACCESS_ATMOSPHERICS)
	var/datum/ui_module/atmos_control/atmos_control

/obj/machinery/computer/atmoscontrol/Initialize(mapload)
	. = ..()
	atmos_control = new(src)

/obj/machinery/computer/atmoscontrol/Destroy()
	QDEL_NULL(atmos_control)
	return ..()

/obj/machinery/computer/atmoscontrol/attack_ai(mob/user)
	ui_interact(user)

/obj/machinery/computer/atmoscontrol/attack_hand(mob/user)
	if(..())
		return
	ui_interact(user)

/obj/machinery/computer/atmoscontrol/ui_state(mob/user)
	return GLOB.default_state

/obj/machinery/computer/atmoscontrol/ui_interact(mob/user, datum/tgui/ui = null)
	atmos_control.ui_interact(user, ui)