#!/usr/bin/env bash
# Created by John A. Hoeven with the ethical assistance of Claude AI
# ---------------------------------------------------------------------------
# ce-base.sh
# ~/projects/ceos/alpine-installer/ce-base.sh
# Version: v0.0.1 | Status: DEVELOPMENT
# Target: Alpine Linux x86-64 (tinkerpad / ThinkPad T480)
# ---------------------------------------------------------------------------
# Tier 0 — Base. Prerequisites common to all hardware.
# Standalone-runnable. Sources lib/ce-common.sh and lib/base/*.sh.
# ---------------------------------------------------------------------------

SCRIPT_NAME="ce-base"
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

source "${SCRIPT_DIR}/lib/ce-common.sh" \
    || { echo "ERROR: lib/ce-common.sh not found"; exit 1; }
source "${SCRIPT_DIR}/lib/base/01_core.sh" \
    || { log_error "lib/base/01_core.sh not found"; exit 1; }
source "${SCRIPT_DIR}/lib/base/02_doas.sh" \
    || { log_error "lib/base/02_doas.sh not found"; exit 1; }

cleanup() {
    local exit_code="${?}"
    log_info "Running cleanup..."
    doas apk cache clean >> "${LOG_FILE}" 2>&1 || true
    doas rm -rf /var/cache/apk/* >> "${LOG_FILE}" 2>&1 || true
    log_info "Cleanup complete (exit code: ${exit_code})"
}
trap cleanup EXIT INT TERM HUP

phase_preflight() {
    log_info "=== TIER 0: PRE-FLIGHT ==="
    check_not_root
    run_test "bash >= 4"          '[[ "${BASH_VERSINFO[0]}" -ge 4 ]]'                    fail
    run_test "arch detected"      '[[ -n "${ARCH}" ]]'                                    fail
    run_test "apk available"      'command -v apk >/dev/null 2>&1'                        fail
    run_test "disk >= 500MB"      '[[ $(df -kP / | awk "NR==2{print \$4}") -ge 512000 ]]'     warn
    run_test "internet reachable" \
        'curl --silent --max-time 10 --output /dev/null https://dl-cdn.alpinelinux.org'  warn
    log_info "Arch: ${ARCH}"
    log_info "Pre-flight complete"
}

phase_install() {
    log_info "=== TIER 0: INSTALL ==="
    doas apk update >> "${LOG_FILE}" 2>&1 \
        && doas apk upgrade >> "${LOG_FILE}" 2>&1 \
        || { log_error "apk update/upgrade failed"; exit 1; }
    run_test "apk functional post-update" \
        'apk search bash 2>/dev/null | grep -q "^bash"' fail
    install_base_core
    install_base_doas
}

phase_verify() {
    log_info "=== TIER 0: VERIFY ==="
    run_test "bash present"         'command -v bash >/dev/null 2>&1'                warn
    run_test "curl present"         'command -v curl >/dev/null 2>&1'                warn
    run_test "ssh present"          'command -v ssh >/dev/null 2>&1'                 warn
    run_test "doas present"         'command -v doas >/dev/null 2>&1'                warn
    run_test "doas wheel.conf"      '[[ -f /etc/doas.d/wheel.conf ]]'                warn
    run_test "community repo live"  'grep -q "^[^#].*community" /etc/apk/repositories' warn
    log_info "Tier 0 verify complete"
}

log_info "=== CE OS INSTALLER — TIER 0: BASE ==="
log_info "Arch: ${ARCH} | Log: ${LOG_FILE}"

phase_preflight
confirm_proceed
phase_install
phase_verify
print_summary
review_pause "Tier 0 — Base" "${LOG_FILE}"

log_info "=== TIER 0 COMPLETE ==="