vore-scenario-generator/src/rolltable.ts

export enum RollTable {
	Setting = 0,
	Theme = 1,
	Start = 2,
	Challenge = 3,
	Twist = 4,
	Focus = 5,
	Word = 6,
}

export enum ValueAccess {
	Global = 0,
	Server = 1,
	CreatorDM = 2,
}

export const RollTableOrder =
	[RollTable.Setting, RollTable.Theme, RollTable.Start, RollTable.Challenge, RollTable.Twist, RollTable.Focus, RollTable.Word] as const satisfies RollTable[]

export const RollTableOrdinals =
	{
		[RollTable.Setting]: 0,
		[RollTable.Theme]: 1,
		[RollTable.Start]: 2,
		[RollTable.Challenge]: 3,
		[RollTable.Twist]: 4,
		[RollTable.Focus]: 5,
		[RollTable.Word]: 6,
	} as const satisfies {[key in RollTable]: number} & {[key in Extract<keyof typeof RollTableOrder, number> as typeof RollTableOrder[key]]: key}

export type RollableTables = {readonly [key in RollTable]: readonly string[]}

export function isTable(val: number): val is RollTable {
	return RollTableOrdinals.hasOwnProperty(val)
}

export function rollOn(table: RollTable, tables: RollableTables): string {
	const values = tables[table]
	if (values.length === 0) {
		throw Error(`no possible options for table ${table}`)
	}
	return values[Math.floor(values.length * Math.random())]
}