#!/usr/bin/env bash

# Copyright (c) 2021-2025 community-scripts ORG
# Author: MickLesk (CanbiZ)
# License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE

source /dev/stdin <<<$(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/api.func)
# Load Cloud-Init library for VM configuration
source /dev/stdin <<<$(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVED/main/misc/cloud-init.sh) 2>/dev/null || true

function header_info() {
    clear
    cat <<"EOF"
   __  __      _ _____    ____  _____    _____
  / / / /___  (_) __(_)  / __ \/ ___/   / ___/___  ______   _____  _____
 / / / / __ \/ / /_/ /  / / / /\__ \    \__ \/ _ \/ ___/ | / / _ \/ ___/
/ /_/ / / / / / __/ /  / /_/ /___/ /   ___/ /  __/ /   | |/ /  __/ /
\____/_/ /_/_/_/ /_/   \____//____/   /____/\___/_/    |___/\___/_/

EOF
}
header_info
echo -e "\n Loading..."
GEN_MAC=02:$(openssl rand -hex 5 | awk '{print toupper($0)}' | sed 's/\(..\)/\1:/g; s/.$//')
RANDOM_UUID="$(cat /proc/sys/kernel/random/uuid)"
METHOD=""
NSAPP="UniFi OS Server"
var_os="debian"
var_version="13"
USE_CLOUD_INIT="no"
OS_TYPE=""
OS_VERSION=""
OS_CODENAME=""
OS_DISPLAY=""

YW=$(echo "\033[33m")
BL=$(echo "\033[36m")
HA=$(echo "\033[1;34m")
RD=$(echo "\033[01;31m")
BGN=$(echo "\033[4;92m")
GN=$(echo "\033[1;92m")
DGN=$(echo "\033[32m")
CL=$(echo "\033[m")

CL=$(echo "\033[m")
BOLD=$(echo "\033[1m")
BFR="\\r\\033[K"
HOLD=" "
TAB="  "

CM="${TAB}✔️${TAB}${CL}"
CROSS="${TAB}✖️${TAB}${CL}"
INFO="${TAB}💡${TAB}${CL}"
OS="${TAB}🖥️${TAB}${CL}"
CONTAINERTYPE="${TAB}📦${TAB}${CL}"
DISKSIZE="${TAB}💾${TAB}${CL}"
CPUCORE="${TAB}🧠${TAB}${CL}"
RAMSIZE="${TAB}🛠️${TAB}${CL}"
CONTAINERID="${TAB}🆔${TAB}${CL}"
HOSTNAME="${TAB}🏠${TAB}${CL}"
BRIDGE="${TAB}🌉${TAB}${CL}"
GATEWAY="${TAB}🌐${TAB}${CL}"
DEFAULT="${TAB}⚙️${TAB}${CL}"
MACADDRESS="${TAB}🔗${TAB}${CL}"
VLANTAG="${TAB}🏷️${TAB}${CL}"
CREATING="${TAB}🚀${TAB}${CL}"
ADVANCED="${TAB}🧩${TAB}${CL}"
CLOUD="${TAB}☁️${TAB}${CL}"
THIN="discard=on,ssd=1,"

set -Eeuo pipefail
trap 'error_handler $LINENO "$BASH_COMMAND"' ERR
trap cleanup EXIT
trap 'post_update_to_api "failed" "INTERRUPTED"' SIGINT
trap 'post_update_to_api "failed" "TERMINATED"' SIGTERM

function error_handler() {
    local exit_code="$?"
    local line_number="$1"
    local command="$2"
    post_update_to_api "failed" "${command}"
    echo -e "\n${RD}[ERROR]${CL} line ${RD}$line_number${CL}: exit code ${RD}$exit_code${CL}: while executing ${YW}$command${CL}\n"
    if qm status $VMID &>/dev/null; then qm stop $VMID &>/dev/null || true; fi
}

function get_valid_nextid() {
    local try_id
    try_id=$(pvesh get /cluster/nextid)
    while true; do
        if [ -f "/etc/pve/qemu-server/${try_id}.conf" ] || [ -f "/etc/pve/lxc/${try_id}.conf" ]; then
            try_id=$((try_id + 1))
            continue
        fi
        if lvs --noheadings -o lv_name | grep -qE "(^|[-_])${try_id}($|[-_])"; then
            try_id=$((try_id + 1))
            continue
        fi
        break
    done
    echo "$try_id"
}

function cleanup_vmid() {
    if qm status $VMID &>/dev/null; then
        qm stop $VMID &>/dev/null
        qm destroy $VMID &>/dev/null
    fi
}

function cleanup() {
    popd >/dev/null
    post_update_to_api "done" "none"
    rm -rf $TEMP_DIR
}

TEMP_DIR=$(mktemp -d)
pushd $TEMP_DIR >/dev/null
if whiptail --backtitle "Proxmox VE Helper Scripts" --title "Unifi OS VM" --yesno "This will create a New Unifi OS VM. Proceed?" 10 58; then
    :
else
    header_info && echo -e "${CROSS}${RD}User exited script${CL}\n" && exit
fi

function msg_info() {
    local msg="$1"
    echo -ne "${TAB}${YW}${HOLD}${msg}${HOLD}"
}

function msg_ok() {
    local msg="$1"
    echo -e "${BFR}${CM}${GN}${msg}${CL}"
}

function msg_error() {
    local msg="$1"
    echo -e "${BFR}${CROSS}${RD}${msg}${CL}"
}

function check_root() {
    if [[ "$(id -u)" -ne 0 || $(ps -o comm= -p $PPID) == "sudo" ]]; then
        clear
        msg_error "Please run this script as root."
        echo -e "\nExiting..."
        sleep 2
        exit
    fi
}

# This function checks the version of Proxmox Virtual Environment (PVE) and exits if the version is not supported.
# Supported: Proxmox VE 8.0.x – 8.9.x and 9.0 – 9.1
pve_check() {
    local PVE_VER
    PVE_VER="$(pveversion | awk -F'/' '{print $2}' | awk -F'-' '{print $1}')"

    # Check for Proxmox VE 8.x: allow 8.0–8.9
    if [[ "$PVE_VER" =~ ^8\.([0-9]+) ]]; then
        local MINOR="${BASH_REMATCH[1]}"
        if ((MINOR < 0 || MINOR > 9)); then
            msg_error "This version of Proxmox VE is not supported."
            msg_error "Supported: Proxmox VE version 8.0 – 8.9"
            exit 1
        fi
        return 0
    fi

    # Check for Proxmox VE 9.x: allow 9.0–9.1
    if [[ "$PVE_VER" =~ ^9\.([0-9]+) ]]; then
        local MINOR="${BASH_REMATCH[1]}"
        if ((MINOR < 0 || MINOR > 1)); then
            msg_error "This version of Proxmox VE is not yet supported."
            msg_error "Supported: Proxmox VE version 9.0 – 9.1"
            exit 1
        fi
        return 0
    fi

    # All other unsupported versions
    msg_error "This version of Proxmox VE is not supported."
    msg_error "Supported versions: Proxmox VE 8.0 – 8.x or 9.0"
    exit 1
}

function arch_check() {
    if [ "$(dpkg --print-architecture)" != "amd64" ]; then
        echo -e "\n ${INFO}${YWB}This script will not work with PiMox! \n"
        echo -e "\n ${YWB}Visit https://github.com/asylumexp/Proxmox for ARM64 support. \n"
        echo -e "Exiting..."
        sleep 2
        exit
    fi
}

function ssh_check() {
    if command -v pveversion >/dev/null 2>&1; then
        if [ -n "${SSH_CLIENT:+x}" ]; then
            if whiptail --backtitle "Proxmox VE Helper Scripts" --defaultno --title "SSH DETECTED" --yesno "It's suggested to use the Proxmox shell instead of SSH, since SSH can create issues while gathering variables. Would you like to proceed with using SSH?" 10 62; then
                echo "you've been warned"
            else
                clear
                exit
            fi
        fi
    fi
}

function exit-script() {
    clear
    echo -e "\n${CROSS}${RD}User exited script${CL}\n"
    exit
}

function select_os() {
    if OS_CHOICE=$(whiptail --backtitle "Proxmox VE Helper Scripts" --title "SELECT OS" --radiolist \
        "Choose Operating System for UniFi OS VM" 12 68 2 \
        "debian13" "Debian 13 (Trixie) - Latest" ON \
        "ubuntu2404" "Ubuntu 24.04 LTS (Noble)" OFF \
        3>&1 1>&2 2>&3); then
        case $OS_CHOICE in
        debian13)
            OS_TYPE="debian"
            OS_VERSION="13"
            OS_CODENAME="trixie"
            OS_DISPLAY="Debian 13 (Trixie)"
            ;;
        ubuntu2404)
            OS_TYPE="ubuntu"
            OS_VERSION="24.04"
            OS_CODENAME="noble"
            OS_DISPLAY="Ubuntu 24.04 LTS"
            ;;
        esac
        echo -e "${OS}${BOLD}${DGN}Operating System: ${BGN}${OS_DISPLAY}${CL}"
    else
        exit-script
    fi
}

function select_cloud_init() {
    # Ubuntu only has cloudimg variant (always Cloud-Init), so no choice needed
    if [ "$OS_TYPE" = "ubuntu" ]; then
        USE_CLOUD_INIT="yes"
        echo -e "${CLOUD}${BOLD}${DGN}Cloud-Init: ${BGN}yes (Ubuntu requires Cloud-Init)${CL}"
        return
    fi

    # Debian has two image variants, so user can choose
    if (whiptail --backtitle "Proxmox VE Helper Scripts" --title "CLOUD-INIT" \
        --yesno "Enable Cloud-Init for VM configuration?\n\nCloud-Init allows automatic configuration of:\n• User accounts and passwords\n• SSH keys\n• Network settings (DHCP/Static)\n• DNS configuration\n\nYou can also configure these settings later in Proxmox UI.\n\nNote: Debian without Cloud-Init will use nocloud image with console auto-login." 18 68); then
        USE_CLOUD_INIT="yes"
        echo -e "${CLOUD}${BOLD}${DGN}Cloud-Init: ${BGN}yes${CL}"
    else
        USE_CLOUD_INIT="no"
        echo -e "${CLOUD}${BOLD}${DGN}Cloud-Init: ${BGN}no${CL}"
    fi
}

function get_image_url() {
    local arch=$(dpkg --print-architecture)
    case $OS_TYPE in
    debian)
        # Debian has two variants:
        # - generic: For Cloud-Init enabled VMs
        # - nocloud: For VMs without Cloud-Init (has console auto-login)
        if [ "$USE_CLOUD_INIT" = "yes" ]; then
            echo "https://cloud.debian.org/images/cloud/${OS_CODENAME}/latest/debian-${OS_VERSION}-generic-${arch}.qcow2"
        else
            echo "https://cloud.debian.org/images/cloud/${OS_CODENAME}/latest/debian-${OS_VERSION}-nocloud-${arch}.qcow2"
        fi
        ;;
    ubuntu)
        # Ubuntu only has cloudimg variant (always with Cloud-Init support)
        echo "https://cloud-images.ubuntu.com/${OS_CODENAME}/current/${OS_CODENAME}-server-cloudimg-${arch}.img"
        ;;
    esac
}

function default_settings() {
    # OS Selection - ALWAYS ask
    select_os

    # Cloud-Init Selection - ALWAYS ask
    select_cloud_init

    # Set defaults for other settings
    VMID=$(get_valid_nextid)
    FORMAT=""
    MACHINE=" -machine q35"
    DISK_CACHE=""
    DISK_SIZE="32G"
    HN="unifi-server-os"
    CPU_TYPE=" -cpu host"
    CORE_COUNT="2"
    RAM_SIZE="4096"
    BRG="vmbr0"
    MAC="$GEN_MAC"
    VLAN=""
    MTU=""
    START_VM="yes"
    METHOD="default"
    echo -e "${CONTAINERID}${BOLD}${DGN}Virtual Machine ID: ${BGN}${VMID}${CL}"
    echo -e "${CONTAINERTYPE}${BOLD}${DGN}Machine Type: ${BGN}Q35 (Modern)${CL}"
    echo -e "${DISKSIZE}${BOLD}${DGN}Disk Size: ${BGN}${DISK_SIZE}${CL}"
    echo -e "${DISKSIZE}${BOLD}${DGN}Disk Cache: ${BGN}None${CL}"
    echo -e "${HOSTNAME}${BOLD}${DGN}Hostname: ${BGN}${HN}${CL}"
    echo -e "${OS}${BOLD}${DGN}CPU Model: ${BGN}Host${CL}"
    echo -e "${CPUCORE}${BOLD}${DGN}CPU Cores: ${BGN}${CORE_COUNT}${CL}"
    echo -e "${RAMSIZE}${BOLD}${DGN}RAM Size: ${BGN}${RAM_SIZE}${CL}"
    echo -e "${BRIDGE}${BOLD}${DGN}Bridge: ${BGN}${BRG}${CL}"
    echo -e "${MACADDRESS}${BOLD}${DGN}MAC Address: ${BGN}${MAC}${CL}"
    echo -e "${VLANTAG}${BOLD}${DGN}VLAN: ${BGN}Default${CL}"
    echo -e "${DEFAULT}${BOLD}${DGN}Interface MTU Size: ${BGN}Default${CL}"
    echo -e "${GATEWAY}${BOLD}${DGN}Start VM when completed: ${BGN}yes${CL}"
    echo -e "${CREATING}${BOLD}${DGN}Creating a UniFi OS VM using the above default settings${CL}"
}

function advanced_settings() {
    METHOD="advanced"

    # OS Selection - ALWAYS ask
    select_os

    # Cloud-Init Selection - ALWAYS ask
    select_cloud_init

    [ -z "${VMID:-}" ] && VMID=$(get_valid_nextid)
    while true; do
        if VMID=$(whiptail --backtitle "Proxmox VE Helper Scripts" --inputbox "Set Virtual Machine ID" 8 58 $VMID --title "VIRTUAL MACHINE ID" --cancel-button Exit-Script 3>&1 1>&2 2>&3); then
            if [ -z "$VMID" ]; then
                VMID=$(get_valid_nextid)
            fi
            if pct status "$VMID" &>/dev/null || qm status "$VMID" &>/dev/null; then
                echo -e "${CROSS}${RD} ID $VMID is already in use${CL}"
                sleep 2
                continue
            fi
            echo -e "${CONTAINERID}${BOLD}${DGN}Virtual Machine ID: ${BGN}$VMID${CL}"
            break
        else
            exit-script
        fi
    done

    if MACH=$(whiptail --backtitle "Proxmox VE Helper Scripts" --title "MACHINE TYPE" --radiolist --cancel-button Exit-Script "Choose Machine Type" 10 58 2 \
        "q35" "Q35 (Modern, PCIe, UEFI)" ON \
        "i440fx" "i440fx (Legacy)" OFF \
        3>&1 1>&2 2>&3); then
        if [ "$MACH" = "q35" ]; then
            echo -e "${CONTAINERTYPE}${BOLD}${DGN}Machine Type: ${BGN}Q35 (Modern)${CL}"
            FORMAT=""
            MACHINE=" -machine q35"
        else
            echo -e "${CONTAINERTYPE}${BOLD}${DGN}Machine Type: ${BGN}i440fx (Legacy)${CL}"
            FORMAT=",efitype=4m"
            MACHINE=""
        fi
    else
        exit-script
    fi

    if DISK_SIZE=$(whiptail --backtitle "Proxmox VE Helper Scripts" --inputbox "Set Disk Size in GiB (e.g., 10, 20)" 8 58 "$DISK_SIZE" --title "DISK SIZE" --cancel-button Exit-Script 3>&1 1>&2 2>&3); then
        DISK_SIZE=$(echo "$DISK_SIZE" | tr -d ' ')
        if [[ "$DISK_SIZE" =~ ^[0-9]+$ ]]; then
            DISK_SIZE="${DISK_SIZE}G"
            echo -e "${DISKSIZE}${BOLD}${DGN}Disk Size: ${BGN}$DISK_SIZE${CL}"
        elif [[ "$DISK_SIZE" =~ ^[0-9]+G$ ]]; then
            echo -e "${DISKSIZE}${BOLD}${DGN}Disk Size: ${BGN}$DISK_SIZE${CL}"
        else
            echo -e "${DISKSIZE}${BOLD}${RD}Invalid Disk Size. Please use a number (e.g., 10 or 10G).${CL}"
            exit-script
        fi
    else
        exit-script
    fi

    if DISK_CACHE=$(whiptail --backtitle "Proxmox VE Helper Scripts" --title "DISK CACHE" --radiolist "Choose" --cancel-button Exit-Script 10 58 2 \
        "0" "None (Default)" ON \
        "1" "Write Through" OFF \
        3>&1 1>&2 2>&3); then
        if [ $DISK_CACHE = "1" ]; then
            echo -e "${DISKSIZE}${BOLD}${DGN}Disk Cache: ${BGN}Write Through${CL}"
            DISK_CACHE="cache=writethrough,"
        else
            echo -e "${DISKSIZE}${BOLD}${DGN}Disk Cache: ${BGN}None${CL}"
            DISK_CACHE=""
        fi
    else
        exit-script
    fi

    if VM_NAME=$(whiptail --backtitle "Proxmox VE Helper Scripts" --inputbox "Set Hostname" 8 58 unifi-os-server --title "HOSTNAME" --cancel-button Exit-Script 3>&1 1>&2 2>&3); then
        if [ -z $VM_NAME ]; then
            HN="unifi-os-server"
            echo -e "${HOSTNAME}${BOLD}${DGN}Hostname: ${BGN}$HN${CL}"
        else
            HN=$(echo ${VM_NAME,,} | tr -d ' ')
            echo -e "${HOSTNAME}${BOLD}${DGN}Hostname: ${BGN}$HN${CL}"
        fi
    else
        exit-script
    fi

    if CPU_TYPE1=$(whiptail --backtitle "Proxmox VE Helper Scripts" --title "CPU MODEL" --radiolist "Choose CPU Model" --cancel-button Exit-Script 10 58 2 \
        "Host" "Host (Faster, recommended)" ON \
        "KVM64" "KVM64 (Compatibility)" OFF \
        3>&1 1>&2 2>&3); then
        case "$CPU_TYPE1" in
        Host)
            echo -e "${OS}${BOLD}${DGN}CPU Model: ${BGN}Host${CL}"
            CPU_TYPE=" -cpu host"
            ;;
        *)
            echo -e "${OS}${BOLD}${DGN}CPU Model: ${BGN}KVM64${CL}"
            CPU_TYPE=""
            ;;
        esac
    else
        exit-script
    fi

    if CORE_COUNT=$(whiptail --backtitle "Proxmox VE Helper Scripts" --inputbox "Allocate CPU Cores" 8 58 2 --title "CORE COUNT" --cancel-button Exit-Script 3>&1 1>&2 2>&3); then
        if [ -z $CORE_COUNT ]; then
            CORE_COUNT="2"
            echo -e "${CPUCORE}${BOLD}${DGN}CPU Cores: ${BGN}$CORE_COUNT${CL}"
        else
            echo -e "${CPUCORE}${BOLD}${DGN}CPU Cores: ${BGN}$CORE_COUNT${CL}"
        fi
    else
        exit-script
    fi

    if RAM_SIZE=$(whiptail --backtitle "Proxmox VE Helper Scripts" --inputbox "Allocate RAM in MiB" 8 58 2048 --title "RAM" --cancel-button Exit-Script 3>&1 1>&2 2>&3); then
        if [ -z $RAM_SIZE ]; then
            RAM_SIZE="2048"
            echo -e "${RAMSIZE}${BOLD}${DGN}RAM Size: ${BGN}$RAM_SIZE${CL}"
        else
            echo -e "${RAMSIZE}${BOLD}${DGN}RAM Size: ${BGN}$RAM_SIZE${CL}"
        fi
    else
        exit-script
    fi

    if BRG=$(whiptail --backtitle "Proxmox VE Helper Scripts" --inputbox "Set a Bridge" 8 58 vmbr0 --title "BRIDGE" --cancel-button Exit-Script 3>&1 1>&2 2>&3); then
        if [ -z $BRG ]; then
            BRG="vmbr0"
            echo -e "${BRIDGE}${BOLD}${DGN}Bridge: ${BGN}$BRG${CL}"
        else
            echo -e "${BRIDGE}${BOLD}${DGN}Bridge: ${BGN}$BRG${CL}"
        fi
    else
        exit-script
    fi

    if MAC1=$(whiptail --backtitle "Proxmox VE Helper Scripts" --inputbox "Set a MAC Address" 8 58 $GEN_MAC --title "MAC ADDRESS" --cancel-button Exit-Script 3>&1 1>&2 2>&3); then
        if [ -z $MAC1 ]; then
            MAC="$GEN_MAC"
            echo -e "${MACADDRESS}${BOLD}${DGN}MAC Address: ${BGN}$MAC${CL}"
        else
            MAC="$MAC1"
            echo -e "${MACADDRESS}${BOLD}${DGN}MAC Address: ${BGN}$MAC1${CL}"
        fi
    else
        exit-script
    fi

    if VLAN1=$(whiptail --backtitle "Proxmox VE Helper Scripts" --inputbox "Set a Vlan(leave blank for default)" 8 58 --title "VLAN" --cancel-button Exit-Script 3>&1 1>&2 2>&3); then
        if [ -z $VLAN1 ]; then
            VLAN1="Default"
            VLAN=""
            echo -e "${VLANTAG}${BOLD}${DGN}VLAN: ${BGN}$VLAN1${CL}"
        else
            VLAN=",tag=$VLAN1"
            echo -e "${VLANTAG}${BOLD}${DGN}VLAN: ${BGN}$VLAN1${CL}"
        fi
    else
        exit-script
    fi

    if MTU1=$(whiptail --backtitle "Proxmox VE Helper Scripts" --inputbox "Set Interface MTU Size (leave blank for default)" 8 58 --title "MTU SIZE" --cancel-button Exit-Script 3>&1 1>&2 2>&3); then
        if [ -z $MTU1 ]; then
            MTU1="Default"
            MTU=""
            echo -e "${DEFAULT}${BOLD}${DGN}Interface MTU Size: ${BGN}$MTU1${CL}"
        else
            MTU=",mtu=$MTU1"
            echo -e "${DEFAULT}${BOLD}${DGN}Interface MTU Size: ${BGN}$MTU1${CL}"
        fi
    else
        exit-script
    fi

    if (whiptail --backtitle "Proxmox VE Helper Scripts" --title "START VIRTUAL MACHINE" --yesno "Start VM when completed?" 10 58); then
        echo -e "${GATEWAY}${BOLD}${DGN}Start VM when completed: ${BGN}yes${CL}"
        START_VM="yes"
    else
        echo -e "${GATEWAY}${BOLD}${DGN}Start VM when completed: ${BGN}no${CL}"
        START_VM="no"
    fi

    if (whiptail --backtitle "Proxmox VE Helper Scripts" --title "ADVANCED SETTINGS COMPLETE" --yesno "Ready to create a Unifi OS VM?" --no-button Do-Over 10 58); then
        echo -e "${CREATING}${BOLD}${DGN}Creating a Unifi OS VM using the above advanced settings${CL}"
    else
        header_info
        echo -e "${ADVANCED}${BOLD}${RD}Using Advanced Settings${CL}"
        advanced_settings
    fi
}

function start_script() {
    if (whiptail --backtitle "Proxmox VE Helper Scripts" --title "SETTINGS" --yesno "Use Default Settings?" --no-button Advanced 10 58); then
        header_info
        echo -e "${DEFAULT}${BOLD}${BL}Using Default Settings${CL}"
        default_settings
    else
        header_info
        echo -e "${ADVANCED}${BOLD}${RD}Using Advanced Settings${CL}"
        advanced_settings
    fi
}
check_root
arch_check
pve_check
ssh_check
start_script
post_to_api_vm

msg_info "Validating Storage"
while read -r line; do
    TAG=$(echo $line | awk '{print $1}')
    TYPE=$(echo $line | awk '{printf "%-10s", $2}')
    FREE=$(echo $line | numfmt --field 4-6 --from-unit=K --to=iec --format %.2f | awk '{printf( "%9sB", $6)}')
    ITEM="  Type: $TYPE Free: $FREE "
    OFFSET=2
    if [[ $((${#ITEM} + $OFFSET)) -gt ${MSG_MAX_LENGTH:-} ]]; then
        MSG_MAX_LENGTH=$((${#ITEM} + $OFFSET))
    fi
    STORAGE_MENU+=("$TAG" "$ITEM" "OFF")
done < <(pvesm status -content images | awk 'NR>1')
VALID=$(pvesm status -content images | awk 'NR>1')
if [ -z "$VALID" ]; then
    msg_error "Unable to detect a valid storage location."
    exit
elif [ $((${#STORAGE_MENU[@]} / 3)) -eq 1 ]; then
    STORAGE=${STORAGE_MENU[0]}
else
    while [ -z "${STORAGE:+x}" ]; do
        #if [ -n "$SPINNER_PID" ] && ps -p $SPINNER_PID >/dev/null; then kill $SPINNER_PID >/dev/null; fi
        printf "\e[?25h"
        STORAGE=$(whiptail --backtitle "Proxmox VE Helper Scripts" --title "Storage Pools" --radiolist \
            "Which storage pool would you like to use for ${HN}?\nTo make a selection, use the Spacebar.\n" \
            16 $(($MSG_MAX_LENGTH + 23)) 6 \
            "${STORAGE_MENU[@]}" 3>&1 1>&2 2>&3)
    done
fi
msg_ok "Using ${CL}${BL}$STORAGE${CL} ${GN}for Storage Location."
msg_ok "Virtual Machine ID is ${CL}${BL}$VMID${CL}."

# Fetch latest UniFi OS Server version and download URL
msg_info "Fetching latest UniFi OS Server version"

# Install jq if not available
if ! command -v jq &>/dev/null; then
    msg_info "Installing jq for JSON parsing"
    apt-get update -qq >/dev/null 2>&1
    apt-get install -y jq -qq >/dev/null 2>&1
fi

# Download firmware list from Ubiquiti API
API_URL="https://fw-update.ui.com/api/firmware-latest"
TEMP_JSON=$(mktemp)

if ! curl -fsSL "$API_URL" -o "$TEMP_JSON"; then
    rm -f "$TEMP_JSON"
    msg_error "Failed to fetch data from Ubiquiti API"
    exit 1
fi

# Parse JSON to find latest unifi-os-server linux-x64 version
LATEST=$(jq -r '
  ._embedded.firmware
  | map(select(.product == "unifi-os-server"))
  | map(select(.platform == "linux-x64"))
  | sort_by(.version_major, .version_minor, .version_patch)
  | last
' "$TEMP_JSON")

UOS_VERSION=$(echo "$LATEST" | jq -r '.version' | sed 's/^v//')
UOS_URL=$(echo "$LATEST" | jq -r '._links.data.href')

# Cleanup temp file
rm -f "$TEMP_JSON"

if [ -z "$UOS_URL" ] || [ -z "$UOS_VERSION" ]; then
    msg_error "Failed to parse UniFi OS Server version or download URL"
    exit 1
fi

UOS_INSTALLER="unifi-os-server-${UOS_VERSION}.bin"
msg_ok "Found UniFi OS Server ${UOS_VERSION}"

# --- Download Cloud Image ---
msg_info "Downloading ${OS_DISPLAY} Cloud Image"
URL=$(get_image_url)
sleep 2
msg_ok "${CL}${BL}${URL}${CL}"
curl -f#SL -o "$(basename "$URL")" "$URL"
echo -en "\e[1A\e[0K"
FILE=$(basename $URL)
msg_ok "Downloaded ${CL}${BL}${FILE}${CL}"

# --- Inject UniFi Installer ---
if ! command -v virt-customize &>/dev/null; then
    msg_info "Installing libguestfs-tools on host"
    apt-get -qq update >/dev/null
    apt-get -qq install libguestfs-tools -y >/dev/null
    msg_ok "Installed libguestfs-tools"
fi

msg_info "Preparing ${OS_DISPLAY} Qcow2 Disk Image"

# Set DNS for libguestfs appliance environment
export LIBGUESTFS_BACKEND_SETTINGS=dns=8.8.8.8,1.1.1.1

# Always create first-boot installation script as fallback
virt-customize -q -a "${FILE}" --run-command "cat > /root/install-unifi.sh << 'INSTALLEOF'
#!/bin/bash
set -e
# Log output to file
exec > /var/log/install-unifi.log 2>&1
echo \"[\$(date)] Starting UniFi OS installation on first boot\"

# Check if already installed
if [ -f /root/.unifi-installed ]; then
  echo \"[\$(date)] UniFi OS already installed, exiting\"
  exit 0
fi

# Wait for cloud-init to complete if present
if command -v cloud-init >/dev/null 2>&1; then
  echo \"[\$(date)] Waiting for cloud-init to complete...\"
  cloud-init status --wait 2>/dev/null || true
fi

# Wait for network to be fully available
echo \"[\$(date)] Waiting for network connectivity...\"
for i in {1..60}; do
  if ping -c 1 -W 2 8.8.8.8 >/dev/null 2>&1; then
    echo \"[\$(date)] Network is available\"
    break
  fi
  echo \"[\$(date)] Waiting for network... attempt \$i/60\"
  sleep 2
done

# Configure DNS
echo \"[\$(date)] Configuring DNS\"
mkdir -p /etc/systemd/resolved.conf.d
cat > /etc/systemd/resolved.conf.d/dns.conf << DNSEOF
[Resolve]
DNS=8.8.8.8 1.1.1.1
FallbackDNS=8.8.4.4 1.0.0.1
DNSEOF
systemctl restart systemd-resolved 2>/dev/null || true
sleep 3

# Wait for apt locks to be released
echo \"[\$(date)] Waiting for package manager to be ready...\"
for i in {1..30}; do
  if ! fuser /var/lib/dpkg/lock-frontend >/dev/null 2>&1 && ! fuser /var/lib/apt/lists/lock >/dev/null 2>&1; then
    echo \"[\$(date)] Package manager is ready\"
    break
  fi
  echo \"[\$(date)] Waiting for other package managers to finish... attempt \$i/30\"
  sleep 5
done

# Update package lists
echo \"[\$(date)] Updating package lists\"
apt-get update

# Install base packages
echo \"[\$(date)] Installing base packages (this may take several minutes)\"
if DEBIAN_FRONTEND=noninteractive apt-get install -y qemu-guest-agent curl wget ca-certificates podman uidmap slirp4netns iptables; then
  echo \"[\$(date)] ✓ Base packages installed successfully\"
else
  echo \"[\$(date)] ✗ ERROR: Failed to install packages\"
  exit 1
fi

# Start QEMU Guest Agent
echo \"[\$(date)] Starting QEMU Guest Agent\"
systemctl enable qemu-guest-agent 2>/dev/null || true
systemctl start qemu-guest-agent 2>/dev/null || true

# Configure and start Podman
echo \"[\$(date)] Configuring Podman\"
loginctl enable-linger root 2>/dev/null || true

# Verify Podman is working
echo \"[\$(date)] Verifying Podman installation\"
if ! podman --version >/dev/null 2>&1; then
  echo \"[\$(date)] ✗ ERROR: Podman not working after installation\"
  exit 1
fi
echo \"[\$(date)] ✓ Podman $(podman --version)\"

# Download UniFi OS installer
echo \"[\$(date)] Downloading UniFi OS Server ${UOS_VERSION}\"
if ! curl -fsSL '${UOS_URL}' -o /root/${UOS_INSTALLER}; then
  echo \"[\$(date)] ✗ ERROR: Failed to download UniFi OS installer\"
  exit 1
fi
chmod +x /root/${UOS_INSTALLER}
echo \"[\$(date)] ✓ Downloaded UniFi OS installer\"

# Run UniFi OS installer
echo \"[\$(date)] Running UniFi OS installer (this will take 2-5 minutes)\"
if /root/${UOS_INSTALLER} install; then
  echo \"[\$(date)] ✓ UniFi OS installer completed successfully\"
else
  EXIT_CODE=\$?
  echo \"[\$(date)] ⚠ Installer exited with code \${EXIT_CODE}\"
fi

# Wait for installation to settle
sleep 10

# Start UniFi OS Server
if command -v uosserver >/dev/null 2>&1; then
  echo \"[\$(date)] ✓ uosserver command found\"
  if id -u uosserver >/dev/null 2>&1; then
    echo \"[\$(date)] Starting UniFi OS Server as uosserver user\"
    su - uosserver -c 'uosserver start' 2>&1 || true
  else
    echo \"[\$(date)] Starting UniFi OS Server as root\"
    uosserver start 2>&1 || true
  fi
  sleep 3
  IP=\$(hostname -I | awk '{print \$1}')
  echo \"[\$(date)] ✓ UniFi OS Server should be accessible at: https://\${IP}:11443\"
else
  echo \"[\$(date)] ✗ ERROR: uosserver command not found after installation\"
  echo \"[\$(date)] Checking installation artifacts...\"
  ls -la /root/ | grep -i unifi || true
  which uosserver 2>&1 || true
fi

# Create completion flag
echo \"[\$(date)] Installation completed\"
touch /root/.unifi-installed
INSTALLEOF" >/dev/null

virt-customize -q -a "${FILE}" --run-command "chmod +x /root/install-unifi.sh" >/dev/null

# Create systemd service
virt-customize -q -a "${FILE}" --run-command "cat > /etc/systemd/system/unifi-firstboot.service << 'SVCEOF'
[Unit]
Description=UniFi OS First Boot Setup
After=network-online.target
Wants=network-online.target
ConditionPathExists=!/root/.unifi-installed

[Service]
Type=oneshot
ExecStart=/root/install-unifi.sh
RemainAfterExit=yes

[Install]
WantedBy=multi-user.target
SVCEOF" >/dev/null

virt-customize -q -a "${FILE}" --run-command "systemctl enable unifi-firstboot.service" >/dev/null

# Try to install base packages during image customization (faster startup if it works)
UNIFI_PREINSTALLED="no"

msg_info "Pre-installing base packages (qemu-guest-agent, podman, curl)"
if virt-customize -a "${FILE}" --install qemu-guest-agent,curl,ca-certificates,podman,uidmap,slirp4netns >/dev/null 2>&1; then
    msg_ok "Pre-installed base packages (UniFi OS will install on first boot)"
else
    msg_info "Pre-installation not possible, packages will install on first boot"
fi

# Add auto-login if Cloud-Init is disabled
if [ "$USE_CLOUD_INIT" != "yes" ]; then
    virt-customize -q -a "${FILE}" \
        --run-command 'mkdir -p /etc/systemd/system/getty@tty1.service.d' \
        --run-command "bash -c 'echo -e \"[Service]\nExecStart=\nExecStart=-/sbin/agetty --autologin root --noclear %I \\\$TERM\" > /etc/systemd/system/getty@tty1.service.d/override.conf'" 2>/dev/null
fi

msg_ok "UniFi OS Server will be installed on first boot"

# Expand root partition to use full disk space
msg_info "Expanding disk image to ${DISK_SIZE}"
qemu-img create -f qcow2 expanded.qcow2 ${DISK_SIZE} >/dev/null 2>&1

# Detect partition device (sda1 for Ubuntu, vda1 for Debian)
PARTITION_DEV=$(virt-filesystems --long -h --all -a "${FILE}" | grep -oP '/dev/\K(s|v)da1' | head -1)
if [ -z "$PARTITION_DEV" ]; then
    PARTITION_DEV="sda1" # fallback
fi

virt-resize --quiet --expand /dev/${PARTITION_DEV} ${FILE} expanded.qcow2 >/dev/null 2>&1
mv expanded.qcow2 ${FILE}
msg_ok "Expanded disk image to ${DISK_SIZE}"

msg_info "Creating UniFi OS VM"
qm create "$VMID" -agent 1${MACHINE} -tablet 0 -localtime 1 -bios ovmf \
    ${CPU_TYPE} -cores "$CORE_COUNT" -memory "$RAM_SIZE" \
    -name "$HN" -tags community-script \
    -net0 virtio,bridge="$BRG",macaddr="$MAC""$VLAN""$MTU" \
    -onboot 1 -ostype l26 -scsihw virtio-scsi-pci

pvesm alloc "$STORAGE" "$VMID" "vm-$VMID-disk-0" 4M >/dev/null
IMPORT_OUT="$(qm importdisk "$VMID" "$FILE" "$STORAGE" --format qcow2 2>&1 || true)"
DISK_REF="$(printf '%s\n' "$IMPORT_OUT" | sed -n "s/.*successfully imported disk '\([^']\+\)'.*/\1/p")"

if [[ -z "$DISK_REF" ]]; then
    DISK_REF="$(pvesm list "$STORAGE" | awk -v id="$VMID" '$1 ~ ("vm-"id"-disk-") {print $1}' | sort | tail -n1)"
fi

qm set "$VMID" \
    -efidisk0 "${STORAGE}:0${FORMAT},size=4M" \
    -scsi0 "${DISK_REF},${DISK_CACHE}size=${DISK_SIZE}" \
    -boot order=scsi0 -serial0 socket >/dev/null
qm resize "$VMID" scsi0 "$DISK_SIZE" >/dev/null
qm set "$VMID" --agent enabled=1 >/dev/null

# Add Cloud-Init drive if enabled
if [ "$USE_CLOUD_INIT" = "yes" ]; then
    msg_info "Configuring Cloud-Init"
    setup_cloud_init "$VMID" "$STORAGE" "$HN" "yes" >/dev/null 2>&1
    msg_ok "Cloud-Init configured"
fi

DESCRIPTION=$(
    cat <<EOF
<div align='center'>
  <a href='https://Helper-Scripts.com' target='_blank' rel='noopener noreferrer'>
    <img src='https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/images/logo-81x112.png' alt='Logo' style='width:81px;height:112px;'/>
  </a>

  <h2 style='font-size: 24px; margin: 20px 0;'>Unifi OS VM</h2>

  <p style='margin: 16px 0;'>
    <a href='https://ko-fi.com/community_scripts' target='_blank' rel='noopener noreferrer'>
      <img src='https://img.shields.io/badge/&#x2615;-Buy us a coffee-blue' alt='spend Coffee' />
    </a>
  </p>

  <span style='margin: 0 10px;'>
    <i class="fa fa-github fa-fw" style="color: #f5f5f5;"></i>
    <a href='https://github.com/community-scripts/ProxmoxVE' target='_blank' rel='noopener noreferrer' style='text-decoration: none; color: #00617f;'>GitHub</a>
  </span>
  <span style='margin: 0 10px;'>
    <i class="fa fa-comments fa-fw" style="color: #f5f5f5;"></i>
    <a href='https://github.com/community-scripts/ProxmoxVE/discussions' target='_blank' rel='noopener noreferrer' style='text-decoration: none; color: #00617f;'>Discussions</a>
  </span>
  <span style='margin: 0 10px;'>
    <i class="fa fa-exclamation-circle fa-fw" style="color: #f5f5f5;"></i>
    <a href='https://github.com/community-scripts/ProxmoxVE/issues' target='_blank' rel='noopener noreferrer' style='text-decoration: none; color: #00617f;'>Issues</a>
  </span>
</div>
EOF
)
qm set "$VMID" -description "$DESCRIPTION" >/dev/null

msg_ok "Created a UniFi OS VM ${CL}${BL}(${HN})"
msg_info "Operating System: ${OS_DISPLAY}"
msg_info "Cloud-Init: ${USE_CLOUD_INIT}"

if [ "$START_VM" == "yes" ]; then
    msg_info "Starting UniFi OS VM"
    qm start $VMID
    msg_ok "Started UniFi OS VM"

    msg_info "Waiting for VM to boot (30 seconds)"
    sleep 30
    msg_ok "VM should be booting now"

    msg_info "Detecting VM IP address (may take up to 60 seconds)"
    VM_IP=""
    for i in {1..30}; do
        VM_IP=$(qm guest cmd $VMID network-get-interfaces 2>/dev/null | jq -r '.[1]["ip-addresses"][]? | select(.["ip-address-type"] == "ipv4") | .["ip-address"]' 2>/dev/null | grep -v "127.0.0.1" | head -1 || echo "")

        if [ -n "$VM_IP" ]; then
            msg_ok "VM IP Address detected: ${VM_IP}"
            break
        fi
        sleep 2
    done

    if [ -n "$VM_IP" ]; then
        msg_info "Waiting for UniFi OS installation to complete (this takes 3-5 minutes)"

        WAIT_COUNT=0
        MAX_WAIT=300 # 5 minutes max
        PORT_OPEN=0
        LAST_MSG_TIME=0

        while [ $WAIT_COUNT -lt $MAX_WAIT ]; do
            if timeout 2 bash -c ">/dev/tcp/${VM_IP}/11443" 2>/dev/null; then
                PORT_OPEN=1
                msg_ok "UniFi OS Server installation completed successfully"
                break
            fi

            sleep 5
            WAIT_COUNT=$((WAIT_COUNT + 5))

            # Update message every 20 seconds
            if [ $((WAIT_COUNT - LAST_MSG_TIME)) -ge 20 ]; then
                echo -e "${BFR}${TAB}${YW}${HOLD}Installation in progress... ${WAIT_COUNT}s elapsed (check: tail -f /var/log/install-unifi.log in VM)${CL}"
                LAST_MSG_TIME=$WAIT_COUNT
            fi
        done

        if [ $PORT_OPEN -eq 1 ]; then
            echo -e "\n${TAB}${GATEWAY}${BOLD}${GN}✓ UniFi OS Server is ready!${CL}"
            echo -e "${TAB}${GATEWAY}${BOLD}${GN}✓ Access at: ${BGN}https://${VM_IP}:11443${CL}\n"
        else
            msg_ok "VM is running, but installation is still in progress"
            echo -e "${TAB}${INFO}${YW}Installation takes 3-5 minutes after first boot${CL}"
            echo -e "${TAB}${INFO}${YW}Check progress: ${BL}qm guest exec ${VMID} -- tail -f /var/log/install-unifi.log${CL}"
            echo -e "${TAB}${INFO}${YW}Or SSH to: ${BL}${VM_IP}${CL} and run: ${BL}tail -f /var/log/install-unifi.log${CL}"
            echo -e "${TAB}${INFO}${YW}Access will be at: ${BGN}https://${VM_IP}:11443${CL}"
        fi
    else
        msg_ok "VM is running (ID: ${VMID})"
        echo -e "${TAB}${INFO}${YW}Could not auto-detect IP address${CL}"
        echo -e "${TAB}${INFO}${YW}Access VM console in Proxmox to check status${CL}"
        echo -e "${TAB}${INFO}${YW}Or check installation log: ${BL}tail -f /var/log/install-unifi.log${CL}"
    fi
fi

if [ "$USE_CLOUD_INIT" = "yes" ]; then
    display_cloud_init_info "$VMID" "$HN"
fi

post_update_to_api "done" "none"
msg_ok "Completed Successfully!\n"
