class_name CreationCopy
extends RefCounted
## Display strings for the creation screen, DERIVED from the rules tables.
##
## Prose lives in content (blurbs, fragments). NUMBERS LIVE IN CODE. The card reads
## both and repeats neither. A hit die written into a JSON — or typed into a string
## literal here — is a second source of truth, and it will eventually disagree with
## the table. Every number below is read from Callings/Races/Skills at call time, so
## retuning a calling retunes its card.
##
## §7: nothing here may mention Luck, in any form. §2: presentation only.

const ARMOR_WORD := {
	"none": "no armour",
	"light": "light armour",
	"medium": "medium armour",
	"heavy": "heavy armour",
}


static func calling_detail(id: String) -> String:
	## e.g. "d8 · light armour · MP (FTH) · saves DEX + MAG · picks 4 skills · talent backstab"
	if not Callings.exists(id):
		return ""
	var saves: Array = []
	for s in Callings.saves(id):
		saves.append(s.to_upper())
	return "d%d · %s · %s · saves %s · picks %d skills · talent %s" % [
		Callings.hit_die(id),
		armor_word(id),
		resource_word(id),
		" + ".join(saves),
		Callings.skill_count(id),
		Callings.talent(id),
	]


static func armor_word(id: String) -> String:
	## The card says "no armour", not "none". Public so the test can assert against
	## the DERIVED word rather than the raw table value — "none" is not a substring
	## of "no armour", and asserting on the raw value only ever passed by accident.
	return ARMOR_WORD.get(Callings.armor(id), Callings.armor(id))


static func resource_word(id: String) -> String:
	## Martials live on cooldowns; casters on a pool off their casting stat.
	if not Callings.is_caster(id):
		return "cooldowns"
	return "MP (%s)" % Callings.casting_stat(id).to_upper()


static func race_trait(id: String) -> String:
	## e.g. "+1 to every save · +1 skill of choice" / "Poison resist · Nightsight"
	if not Races.exists(id):
		return ""
	var parts: Array = []
	if Races.save_bonus(id) > 0:
		parts.append("+%d to every save" % Races.save_bonus(id))
	for s in Races.granted_skills(id):
		parts.append(skill_label(s).capitalize())
	if Races.poison_save_bonus(id) > 0:
		parts.append("Poison resist")
	if Races.flag(id, "nightsight"):
		parts.append("Nightsight")
	if Races.flag(id, "claws"):
		parts.append("Claws")
	if Races.flag(id, "keen_scent"):
		parts.append("Keen scent")
	if Races.wants_bonus_skill(id):
		parts.append("+1 skill of choice")
	return " · ".join(parts)


static func skill_label(skill: String) -> String:
	## sleight_of_hand -> "sleight of hand". Ids are snake_case; humans are not.
	return skill.replace("_", " ")