#!/usr/bin/env bash
# scripts/install-kyverno-json.sh — install the kj CLI (v1.25, REQ-294)
#
# Installs the kyverno-json CLI (`kj`) via `go install` (D-115). The
# binary is a Go project — not a Python package. Cached via the Go
# module cache.
#
# Usage: bash scripts/install-kyverno-json.sh
# Exits 0 on success, 1 if Go is not installed, 2 if `kj version` fails.
set -euo pipefail

if ! command -v go >/dev/null 2>&1; then
  echo "ERROR: Go toolchain not found. Install Go (https://go.dev/dl/) first." >&2
  echo "       kyverno-json is a Go binary — `go install` is the upstream-blessed path (D-115)." >&2
  exit 1
fi

echo "Installing kyverno-json CLI (kj) via go install..."
GOBIN="${GOBIN:-${HOME}/go/bin}"
go install github.com/kyverno/kyverno-json/cmd/kj@latest

if ! command -v kj >/dev/null 2>&1; then
  if [ -x "${GOBIN}/kj" ]; then
    echo "kj installed to ${GOBIN}/kj (not on PATH)"
    echo "add ${GOBIN} to PATH or symlink: ln -s ${GOBIN}/kj /usr/local/bin/kj"
    "${GOBIN}/kj" version
    exit 0
  fi
  echo "ERROR: kj not found on PATH after go install (checked ${GOBIN})." >&2
  exit 2
fi

echo "kj installed:"
kj version
echo "DONE"