class_name ResourceDefinition
extends Resource

@export var resource_id: StringName
@export var display_name: String
@export var item_id: StringName
@export var extraction_action_id: StringName
@export var capability_tag_ids: Array[StringName] = []
@export var presentation_cue_id: StringName
@export_range(0.0, 100000.0, 0.1) var initial_amount := 10.0
@export_range(0.0, 100000.0, 0.1) var yield_per_action := 1.0
@export_range(0.0, 100000.0, 0.1) var max_amount := 10.0
@export_range(0.0, 1000.0, 0.01) var regrow_rate := 0.0
@export_range(0.0, 1.0, 0.05) var safety_risk := 0.0
@export_range(0.0, 1000.0, 0.1) var comfort_distance := 18.0
@export var discovery_priority := 0.0
@export var can_npcs_use := true
@export var can_player_use := true


func validate() -> Array[String]:
	var errors: Array[String] = []
	if resource_id.is_empty():
		errors.append("resource_id is empty")
	if display_name.is_empty():
		errors.append("display_name is empty for '%s'" % resource_id)
	if item_id.is_empty():
		errors.append("item_id is empty for '%s'" % resource_id)
	if extraction_action_id.is_empty():
		errors.append("extraction_action_id is empty for '%s'" % resource_id)
	if not is_finite(initial_amount) or initial_amount <= 0.0:
		errors.append("initial_amount must be positive for '%s'" % resource_id)
	if not is_finite(yield_per_action) or yield_per_action <= 0.0:
		errors.append("yield_per_action must be positive for '%s'" % resource_id)
	if not is_finite(max_amount) or max_amount < initial_amount:
		errors.append("max_amount must cover initial_amount for '%s'" % resource_id)
	if not is_finite(regrow_rate) or regrow_rate < 0.0:
		errors.append("regrow_rate must be non-negative for '%s'" % resource_id)
	if not is_finite(safety_risk) or safety_risk < 0.0 or safety_risk > 1.0:
		errors.append("safety_risk must be between zero and one for '%s'" % resource_id)
	if not is_finite(comfort_distance) or comfort_distance < 0.0:
		errors.append("comfort_distance must be non-negative for '%s'" % resource_id)
	if not is_finite(discovery_priority):
		errors.append("discovery_priority must be finite for '%s'" % resource_id)
	_validate_unique_ids(capability_tag_ids, "capability tag", errors)
	return errors


static func _validate_unique_ids(
	ids: Array[StringName], label: String, errors: Array[String]
) -> void:
	var seen := {}
	for value in ids:
		if value.is_empty():
			errors.append("%s ID is empty" % label)
		elif seen.has(value):
			errors.append("duplicate %s '%s'" % [label, value])
		else:
			seen[value] = true