#!/bin/bash
# test-boot.sh — Automated boot test: verify KubeSolo OS boots in QEMU
# Usage: ./test/qemu/test-boot.sh <iso-path>
# Exit 0 = PASS, Exit 1 = FAIL
set -euo pipefail

ISO="${1:?Usage: $0 <path-to-iso>}"
TIMEOUT_BOOT=${TIMEOUT_BOOT:-120}   # seconds to wait for boot success marker
SERIAL_LOG=$(mktemp /tmp/kubesolo-boot-test-XXXXXX.log)

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
. "$SCRIPT_DIR/../lib/qemu-helpers.sh"

# Temp data disk
DATA_DISK=$(mktemp /tmp/kubesolo-data-XXXXXX.img)
dd if=/dev/zero of="$DATA_DISK" bs=1M count=512 2>/dev/null
mkfs.ext4 -q -L KSOLODATA "$DATA_DISK" 2>/dev/null

QEMU_PID=""
EXTRACT_DIR=""

cleanup() {
    [ -n "$QEMU_PID" ] && kill "$QEMU_PID" 2>/dev/null || true
    rm -f "$DATA_DISK" "$SERIAL_LOG"
    [ -n "$EXTRACT_DIR" ] && rm -rf "$EXTRACT_DIR"
}
trap cleanup EXIT

echo "==> Boot test: $ISO"
echo "    Timeout: ${TIMEOUT_BOOT}s"
echo "    Serial log: $SERIAL_LOG"

# Extract kernel from ISO
EXTRACT_DIR="$(mktemp -d /tmp/kubesolo-extract-XXXXXX)"
extract_kernel_from_iso "$ISO" "$EXTRACT_DIR"

KVM_FLAG=$(detect_kvm)
[ -n "$KVM_FLAG" ] && echo "    KVM acceleration: enabled"

# Launch QEMU in background with direct kernel boot
# shellcheck disable=SC2086
qemu-system-x86_64 \
    -m 2048 -smp 2 \
    -nographic \
    $KVM_FLAG \
    -kernel "$VMLINUZ" \
    -initrd "$INITRAMFS" \
    -drive "file=$DATA_DISK,format=raw,if=virtio" \
    -net "nic,model=virtio" \
    -net user \
    -serial "file:$SERIAL_LOG" \
    -append "console=ttyS0,115200n8 kubesolo.data=/dev/vda kubesolo.debug" \
    &
QEMU_PID=$!

# Wait for boot success marker in serial log
echo "    Waiting for boot..."
ELAPSED=0
while [ "$ELAPSED" -lt "$TIMEOUT_BOOT" ]; do
    if grep -q "\[kubesolo-init\] \[OK\] KubeSolo is running" "$SERIAL_LOG" 2>/dev/null; then
        echo ""
        echo "==> PASS: KubeSolo OS booted successfully in ${ELAPSED}s"
        exit 0
    fi
    if ! kill -0 "$QEMU_PID" 2>/dev/null; then
        echo ""
        echo "==> FAIL: QEMU exited prematurely"
        echo "    Last 20 lines of serial log:"
        tail -20 "$SERIAL_LOG" 2>/dev/null
        exit 1
    fi
    sleep 1
    ELAPSED=$((ELAPSED + 1))
    printf "\r    Elapsed: %ds / %ds" "$ELAPSED" "$TIMEOUT_BOOT"
done

echo ""
echo "==> FAIL: Boot did not complete within ${TIMEOUT_BOOT}s"
echo "    Last 30 lines of serial log:"
tail -30 "$SERIAL_LOG" 2>/dev/null
exit 1