package Decoration
import BaseObject
import initlater InstantBuild

public constant CHANGE_FACE_ID = compiletime(ABIL_ID_GEN.next())
public constant INC_SCALE = compiletime(ABIL_ID_GEN.next())
public constant DEC_SCALE = compiletime(ABIL_ID_GEN.next())

constant KEY_SCALE = "d"
constant KEY_ANGLE = "e"

public class Decoration extends StaticSetupObject
	private let scale = new ConfigValue(1.0, 0.1, "Scale")
	var tid = 0
	var hasBeenChanged = false

	construct(vec2 pos, player owner, real a, int tid)
		super(CreateUnit(owner, buildorders[tid], pos.x, pos.y, a), CreateUnit(owner, buildorders[tid], pos.x, pos.y, a), 0., null)
		this.tid = tid
		setup..addAbility(CHANGE_FACE_ID)..addAbility(INC_SCALE)..addAbility(DEC_SCALE)..addAbility(GHOST_INVIS_ID)
		EventListener.add(setup, EVENT_PLAYER_UNIT_SPELL_CAST, () -> onCast())


	function onCast()
		let id = GetSpellAbilityId()

		switch id
			case CHANGE_FACE_ID
				let tg = EventData.getSpellTargetPos()
				changeAngle(pos.angleTo2d(tg))
			case INC_SCALE
				scale.increment(this, 3.0)
			case DEC_SCALE
				scale.decrement(this, 0.1)
		actor.setScale(scale.get())
		setup.setScale(scale.get())

	function changeAngle(angle a)
		let select = IsUnitSelected(setup, owner)
		setNewActor(createUnit(owner, actor.getTypeId(), pos, a))
		setNewSetup(createUnit(owner, setup.getTypeId(), pos, a))
		actor.addAbility(LOCUST_ID)
		setup..addAbility(GHOST_INVIS_ID)..addAbility(CHANGE_FACE_ID)..addAbility(INC_SCALE)..addAbility(DEC_SCALE)
		EventListener.add(setup, EVENT_PLAYER_UNIT_SPELL_CAST) ->
			onCast()
		if select
			owner.select(setup)
		hasBeenChanged = true

	ondestroy
		destroy scale


	override function deserialize(Json json)
		changeAngle((json.getInt(KEY_ANGLE).toReal().fromDeg()))
		let sc = json.getInt(KEY_SCALE)
		if sc > 0.
			scale.setVal(sc / 100.)
			actor.setScale(scale.get())
			setup.setScale(scale.get())

	override function serialize() returns Json
		let json = super.serialize()
		json..addProperty(new Property(KEY_TYPE, tid.toString()))
		if hasBeenChanged
			json..addProperty(new Property(KEY_ANGLE, actor.getFacingAngle().degrees().toInt().toString()))
		if scale.get() != 1.0
			json..addProperty(new Property(KEY_SCALE, (scale.get() * 100.).toInt().toString()))
		return json

@objectgen function genDeco()
	new ChannelAbilityPreset(CHANGE_FACE_ID, 1, true)
		..setName("Set facing")
		..presetTargetTypes(Targettype.POINT)
		..presetCastRange(lvl -> 500)
		..presetCooldown(lvl -> 0)
		..presetManaCost(lvl -> 0)
		..presetTooltipNormal(lvl -> "Set the facing of this decoration [Q]")
		..presetTooltipNormalExtended(lvl -> "Makes this object point at the target direction")
		..presetButtonPosNormal(0, 0)
		..presetIcon(Icons.bTNLoad)
		..presetHotkey("Q")

	new ChannelAbilityPreset(INC_SCALE, 1, true)
		..setName("Increase Scale")
		..presetTargetTypes(Targettype.NONE)
		..makeUnitSpell(0, 0)
		..presetTooltipNormal(lvl -> "Increase the scale of this decoration [W]")
		..presetTooltipNormalExtended(lvl -> "+0.1")
		..presetButtonPosNormal(1, 0)
		..presetIcon(Icons.bTNReplay_SpeedUp)
		..presetHotkey("W")

	new ChannelAbilityPreset(DEC_SCALE, 1, true)
		..setName("Decrease Scale")
		..presetTargetTypes(Targettype.NONE)
		..makeUnitSpell(0, 0)
		..presetTooltipNormal(lvl -> "Decrease the scale of this decoration [S]")
		..presetTooltipNormalExtended(lvl -> "-0.1")
		..presetButtonPosNormal(1, 1)
		..presetIcon(Icons.bTNReplay_SpeedDown)
		..presetHotkey("S")