extends Node

signal new_quest

var quests = []

func save():
	var data = []
	for k in quests:
		data.push_back(k.save())
	global.save_data.quests = data
func restore_quest(d):
	var q = Quest.new(d.title, d.desc)
func restore():
	for k in global.save_data.quests:
		quests.push_back(restore_quest(k))


var quest_triggers = [
	{
		"title": "Something is not right.",
		"desc": "You wake up from noise. Explore the building to find the source.",
		"trigger": ["once", 0, 0, 10],
		"objectives": [
			["walkto_room", "Check enterance.", "Check enterance room.", "exit_room", 8.0]
		]
	}
]

class QuestObjective extends Reference:
	var _title
	var _desc
	var quest
	var complete = false
	var active = false
	func update():
		pass
	func activate():
		active = true
	func finish():
		active = false
	func set_quest(q):
		quest = q
	func _init(title, desc):
		_title = title
		_desc = desc
	func save():
		var save_data = {}
		save_data.create = ["obj", _desc, _title]
		save_data.active = active
		save_data.complete = complete
		return save_data

class Quest extends Reference:
	signal quest_complete
	var _title
	var _description
	var objectives = []
	var children = []
	var complete = false
	var cur_objective: int = -1
	func _init(title, desc):
		_title = title
		_description = desc
	func add_objective(obj):
		objectives.push_back(obj)
		
	func remove_objective(obj):
		objectives.erase(obj)
	func add_child(obj):
		children.push_back(obj)
	func remove_child(obj: Quest):
		children.erase(obj)
	func save():
		var save_data = {}
		save_data.title = _title
		save_data.desc = _description
		return save_data
	func update():
		for k in children:
			k.update()
		for k in objectives:
			k.update()
		var old_objective:int = cur_objective
		complete = true
		for k in range(objectives.size()):
			if !objectives[k].complete:
				cur_objective = k
				complete = false
				break
		for k in children:
			if !k.complete:
				complete = false
		if complete:
			emit_signal("quest_complete", self)
		if cur_objective != old_objective:
			if old_objective >= 0:
				objectives[old_objective].finish()
			objectives[cur_objective].activate()
	func get_title():
		return _title
	func get_description():
		return _title
class ObjectiveWalkto extends QuestObjective:
	var where = Vector3()
	var meta = ""
	var radius = 0.0
	var indicator = preload("res://ui/quest_indicator.tscn")
	var ind_i: Node2D
	var old_pos = Vector3()
	func _init(t, d, w, r).(t, d):
		meta = w
		radius = r
	func activate():
		active = true
		ind_i = indicator.instance()
		var player_pos: Vector3 = global.player.global_transform.origin
		var base = global.astar.get_closest_point(player_pos)
		var tgt = global.astar.get_closest_point(where)
		var path = global.astar.get_point_path(base, tgt)
		if path.size() > 1:
			ind_i.target = path[1] + Vector3(0, 1, 0) * 0.3
		else:
			ind_i.target = where + Vector3(0, 1, 0) * 0.3
		global.get_viewport().add_child(ind_i)
		print(_title, "ACTIVATED")
		old_pos = player_pos
	func finish():
		active = false
		ind_i.queue_free()
	func update():
		if !active:
			return
		var player_pos: Vector3 = global.player.global_transform.origin
		if old_pos.distance_to(player_pos) > 0.5:
			var base = global.astar.get_closest_point(player_pos)
			var tgt = global.astar.get_closest_point(where)
			var path = global.astar.get_point_path(base, tgt)
			if path.size() > 1:
				var ind = 0
				var pt = path[ind]
				while ind < path.size() - 1:
					pt = path[ind]
					if pt.distance_to(player_pos) > 2.0:
						ind_i.target = pt + Vector3(0, 1, 0) * 0.3
						break
					ind += 1
			else:
				ind_i.target = where + Vector3(0, 1, 0) * 0.3
			old_pos = player_pos
	func save():
		var save_data = {}
		save_data.create = ["walkto_room", _title, _desc, meta, radius]
		save_data.active = active
		save_data.complete = complete
		return save_data

func _ready():
	pass


func check_trigger(t):
	var t_type = t[0]
	match(t_type):
		"once":
			var t_day = t[1]
			var t_hour = t[2]
			var t_minute = t[3]
			if global.game_day != t_day:
				return false
			if global.game_hour != t_hour:
				return false
			if int(global.game_minute / 10) != int(t_minute / 10):
				return false
			return true
	return false
func create_objective(v):
	var o_type = v[0]
	match(o_type):
		"walkto_room":
			var o_title = v[1]
			var o_desc = v[2]
			var o_meta = v[3]
			var o_radius = v[4]
			var obj = ObjectiveWalkto.new(o_title, o_desc, o_meta, o_radius)
			return obj
	return null

var up_time = 0.0
var state: int = 0
func _process(delta):
	up_time += delta
	if up_time > 1000.0:
		up_time = 0.0
	if int(up_time * 10.0) % 10 == 1:
		var processed = []
		while quest_triggers.size() > 0:
			var k = quest_triggers.pop_front()
			if check_trigger(k.trigger):
				print("quest triggered: ", k.title)
				var q = Quest.new(k.title, k.desc)
				quests.push_back(q)
				for r in k.objectives:
					var obj = create_objective(r)
					if obj:
						q.add_objective(obj)
				emit_signal("new_quest", q)
			else:
				processed.push_back(k)
		quest_triggers = processed
		for k in quests:
			k.update()