#!/usr/bin/env nu
# install.nu — install a built artifact to ~/.local/bin.
# Reads JSON inputs from stdin (built-artifact).
# Emits JSON result to stdout.

def main []: nothing -> nothing {
  let inputs   = ($in | from json)
  let artifact = ($inputs | get "built-artifact")

  if (not ($artifact.ok)) {
    error make { msg: "built-artifact.ok is false — refusing to install" }
  }

  let src    = $artifact.path
  let target = ($nu.home-dir | path join ".local" "bin" $artifact.crate_name)

  let cp_result = (do { ^cp $src $target } | complete)
  if ($cp_result.exit_code != 0) {
    error make { msg: $"cp failed: ($cp_result.stderr)" }
  }

  let chmod_result = (do { ^chmod +x $target } | complete)
  if ($chmod_result.exit_code != 0) {
    error make { msg: $"chmod failed: ($chmod_result.stderr)" }
  }

  let version_result = (do { nu -c $"($target) --version" } | complete)
  let version = if ($version_result.exit_code == 0) {
    $version_result.stdout | str trim
  } else {
    "unknown"
  }

  { "installed": { ok: true, binary_path: $target, version: $version } } | to json | print
}