import * as Command from "effect/unstable/cli/Command"

type Options<Config extends Command.Command.Config, Commands extends ReadonlyArray<Any>> = {

readonly description?: string

readonly params?: Config

readonly commands?: Commands

}

export interface Node<

Name extends string,

Spec extends Command.Command<Name, any, any, any, any>,

Commands extends Children,

> {

readonly name: Name

readonly spec: Spec

readonly commands: Commands

}

export type Any = Node<string, Command.Command<any, any, any, any, any>, Children>

export type Children = Readonly<Record<string, Any>>

export function make<

const Name extends string,

const Config extends Command.Command.Config = {},

const Commands extends ReadonlyArray<Any> = [],

>(name: Name, options: Options<Config, Commands> = {}) {

const command = Command.make(name, options.params ?? ({} as Config))

const spec = options.description ? command.pipe(Command.withDescription(options.description)) : command

return {

name,

spec,

commands: Object.fromEntries(

(options.commands ?? []).map((command) => [command.name, command]),

) as ChildrenOf<Commands>,

}

}

type ChildrenOf<Commands extends ReadonlyArray<Any>> = {

readonly [Node in Commands[number] as Node["name"]]: Node

}

export * as Spec from "./spec"