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 CliApi from "./cli-api"