class_name PlayerStandingRecord
extends RefCounted

const SCHEMA_VERSION := 1
const MAX_STANDING := 100.0
const TIER_STRANGER := 0
const TIER_KNOWN_HAND := 1
const TIER_TRUSTED := 2
const TIER_VILLAGE_STEWARD := 3
const TIER_VOICE_OF_JAJCE := 4

const TIER_THRESHOLDS := {
	TIER_STRANGER: 0.0,
	TIER_KNOWN_HAND: 15.0,
	TIER_TRUSTED: 35.0,
	TIER_VILLAGE_STEWARD: 60.0,
	TIER_VOICE_OF_JAJCE: 85.0,
}

const TIER_NAMES := {
	TIER_STRANGER: "Stranger",
	TIER_KNOWN_HAND: "Known Hand",
	TIER_TRUSTED: "Trusted",
	TIER_VILLAGE_STEWARD: "Village Steward",
	TIER_VOICE_OF_JAJCE: "Voice of Jajce",
}

var data: Dictionary


func _init(record_data: Dictionary = {}) -> void:
	data = record_data.duplicate(true)


static func create() -> PlayerStandingRecord:
	return (
		PlayerStandingRecord
		. new(
			{
				"schema_version": SCHEMA_VERSION,
				"standing": 0.0,
				"resolved_needs": 0,
				"gratitude": {},
			}
		)
	)


static func from_dictionary(record_data: Dictionary) -> PlayerStandingRecord:
	if int(record_data.get("schema_version", -1)) != SCHEMA_VERSION:
		return null
	if not record_data.has_all(["standing", "resolved_needs", "gratitude"]):
		return null
	var standing := float(record_data["standing"])
	var resolved_needs := int(record_data["resolved_needs"])
	var gratitude = record_data["gratitude"]
	if (
		not is_finite(standing)
		or standing < 0.0
		or standing > MAX_STANDING
		or resolved_needs < 0
		or not gratitude is Dictionary
	):
		return null
	var normalized_gratitude := {}
	for raw_npc_id in gratitude:
		var npc_id := int(raw_npc_id)
		var value := float(gratitude[raw_npc_id])
		if npc_id < 0 or not is_finite(value) or value < 0.0 or value > 1.0:
			return null
		normalized_gratitude[npc_id] = value
	return (
		PlayerStandingRecord
		. new(
			{
				"schema_version": SCHEMA_VERSION,
				"standing": standing,
				"resolved_needs": resolved_needs,
				"gratitude": normalized_gratitude,
			}
		)
	)


func grant_standing(amount: float, requester_npc_id: int) -> void:
	if not is_finite(amount) or amount <= 0.0 or requester_npc_id < 0:
		return
	data["standing"] = minf(get_standing() + amount, MAX_STANDING)
	data["resolved_needs"] = int(data["resolved_needs"]) + 1
	var gratitude := get_gratitude(requester_npc_id)
	data["gratitude"][requester_npc_id] = minf(gratitude + 0.1, 1.0)


func get_standing() -> float:
	return float(data["standing"])


func get_resolved_needs() -> int:
	return int(data["resolved_needs"])


func get_gratitude(npc_id: int) -> float:
	return float(data["gratitude"].get(npc_id, 0.0))


func get_tier() -> int:
	var current := TIER_STRANGER
	for tier in [TIER_VOICE_OF_JAJCE, TIER_VILLAGE_STEWARD, TIER_TRUSTED, TIER_KNOWN_HAND]:
		if get_standing() >= float(TIER_THRESHOLDS[tier]):
			current = tier
			break
	return current


func get_tier_name() -> String:
	return String(TIER_NAMES[get_tier()])


func to_dictionary() -> Dictionary:
	return data.duplicate(true)