#!/usr/bin/env bash
# Created by John A. Hoeven with the ethical assistance of Claude AI
# ---------------------------------------------------------------------------
# 00_preflight.sh
# /home/john/projects/suse-professional-package-installer/lib/00_preflight.sh
# Version: v0.1.0 | Status: DEVELOPMENT
# ---------------------------------------------------------------------------
# Purpose:  Environment checks only — no system changes. Runs unconditionally
#           before any privileged subscript, unprivileged itself.
# Target:   SUSE family (zypper).
# Entry:    ./00_preflight.sh
# Depends:  ce-common.sh (same directory)
# ---------------------------------------------------------------------------

# shellcheck disable=SC2016
# ^ run_test()'s cmd args are intentionally single-quoted — deferred-eval
#   expressions, not meant to expand at the call site.

_SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &>/dev/null && pwd)"
# shellcheck source=./ce-common.sh
source "${_SCRIPT_DIR}/ce-common.sh"

log_info "=== PRE-FLIGHT ==="

run_test "not running as root" '[[ "${EUID}" -ne 0 ]]' fail
run_test "zypper available" 'command -v zypper >/dev/null 2>&1' fail
run_test "sudo or doas available" \
    'command -v sudo >/dev/null 2>&1 || command -v doas >/dev/null 2>&1' fail
run_test "internet reachable" \
    'curl --silent --max-time 5 --output /dev/null https://download.opensuse.org' \
    warn
run_test "disk space >= 500MB" \
    '[[ $(df / --output=avail | tail -1) -ge 512000 ]]' \
    warn

log_info "Pre-flight complete"