#!/usr/bin/env nu
# Reference Nu script implementing the ScriptRequest/ScriptResponse contract.
#
# Usage: nu reference.nu --stdin-json
# Reads a JSON request from stdin, dispatches on `op`, writes a JSON response to stdout.
#
# This file is a starting point — copy and adapt it for your provider logic.

let req = $in | from json

match $req.op {
    "spawn" => {
        # Allocate a handle (use a UUID or provider-assigned ID in real scripts).
        let handle = (random uuid)
        {
            result: "spawn",
            handle: $handle,
            ip: null,
            ssh_host: null,
            ssh_port: null,
            expires_at: null,
            provider: "script-nu",
            metadata: {}
        } | to json
    },

    "destroy" => {
        # Idempotent: always return ack, even for unknown handles.
        { result: "ack" } | to json
    },

    "status" => {
        # Return "not_found" if unknown; "running" if known.
        { result: "status", value: "running" } | to json
    },

    "list" => {
        # Return an array of Instance objects matching the selector.
        { result: "list", value: [] } | to json
    },

    "health" => {
        { result: "health", value: true } | to json
    },

    _ => {
        eprintln $"unknown op: ($req.op)"
        exit 1
    }
}