#!/bin/bash
# =============================================================================
# Clone VM 300 (Windows 11 Template) for Oracle Testing
# =============================================================================
#
# Purpose: Create a test VM for Oracle installation testing
#
# Usage:
#   ./clone-vm300.sh [TARGET_VMID] [TARGET_NAME]
#
# Examples:
#   ./clone-vm300.sh              # Creates VM 301 named oracle-test-301
#   ./clone-vm300.sh 305          # Creates VM 305 named oracle-test-305
#   ./clone-vm300.sh 310 roa-prod # Creates VM 310 named roa-prod
#
# Prerequisites:
#   - Run on Proxmox host (pvemini, pve1, or pveelite)
#   - VM 300 exists as Windows 11 template
#   - Sufficient storage space (~50GB per clone)
#
# =============================================================================

set -e

# -----------------------------------------------------------------------------
# Configuration
# -----------------------------------------------------------------------------

SOURCE_VMID=300
TARGET_VMID=${1:-301}
TARGET_NAME=${2:-"oracle-test-${TARGET_VMID}"}

# Storage for new VM (change if needed)
TARGET_STORAGE="local-zfs"

# Node where to create the VM (empty = same as source)
TARGET_NODE=""

# Full clone (true) or linked clone (false)
FULL_CLONE=true

# Start VM after creation
AUTO_START=true

# Description for the new VM
DESCRIPTION="Oracle 21c Test VM - Created $(date '+%Y-%m-%d %H:%M')"

# -----------------------------------------------------------------------------
# Validation
# -----------------------------------------------------------------------------

echo "=============================================="
echo "Proxmox VM Clone Script"
echo "=============================================="
echo ""
echo "Source VM:    $SOURCE_VMID"
echo "Target VM:    $TARGET_VMID"
echo "Target Name:  $TARGET_NAME"
echo "Full Clone:   $FULL_CLONE"
echo "Auto Start:   $AUTO_START"
echo ""

# Check if running on Proxmox
if ! command -v qm &> /dev/null; then
    echo "ERROR: This script must be run on a Proxmox host"
    echo "       (qm command not found)"
    exit 1
fi

# Check if source VM exists
if ! qm status $SOURCE_VMID &> /dev/null; then
    echo "ERROR: Source VM $SOURCE_VMID does not exist"
    exit 1
fi

# Check if target VMID is already in use
if qm status $TARGET_VMID &> /dev/null 2>&1; then
    echo "ERROR: Target VMID $TARGET_VMID already exists"
    echo "       Choose a different VMID or remove existing VM:"
    echo "       qm destroy $TARGET_VMID"
    exit 1
fi

# Confirm before proceeding
read -p "Proceed with cloning? [y/N] " -n 1 -r
echo
if [[ ! $REPLY =~ ^[Yy]$ ]]; then
    echo "Aborted."
    exit 0
fi

# -----------------------------------------------------------------------------
# Clone VM
# -----------------------------------------------------------------------------

echo ""
echo "Creating clone..."

CLONE_CMD="qm clone $SOURCE_VMID $TARGET_VMID --name $TARGET_NAME"

if [ "$FULL_CLONE" = true ]; then
    CLONE_CMD="$CLONE_CMD --full"
fi

if [ -n "$TARGET_STORAGE" ]; then
    CLONE_CMD="$CLONE_CMD --storage $TARGET_STORAGE"
fi

if [ -n "$TARGET_NODE" ]; then
    CLONE_CMD="$CLONE_CMD --target $TARGET_NODE"
fi

echo "Running: $CLONE_CMD"
eval $CLONE_CMD

echo "Clone created successfully"

# -----------------------------------------------------------------------------
# Configure VM
# -----------------------------------------------------------------------------

echo ""
echo "Configuring VM..."

# Set description
qm set $TARGET_VMID --description "$DESCRIPTION"

# Optionally increase resources for Oracle
# qm set $TARGET_VMID --memory 8192 --cores 4

echo "VM configured"

# -----------------------------------------------------------------------------
# Start VM
# -----------------------------------------------------------------------------

if [ "$AUTO_START" = true ]; then
    echo ""
    echo "Starting VM..."
    qm start $TARGET_VMID

    # Wait for VM to start
    sleep 5

    # Check status
    STATUS=$(qm status $TARGET_VMID | awk '{print $2}')
    echo "VM Status: $STATUS"
fi

# -----------------------------------------------------------------------------
# Output Summary
# -----------------------------------------------------------------------------

echo ""
echo "=============================================="
echo "VM Clone Complete"
echo "=============================================="
echo ""
echo "VMID:        $TARGET_VMID"
echo "Name:        $TARGET_NAME"
echo "Status:      $(qm status $TARGET_VMID | awk '{print $2}')"
echo ""
echo "Console URL: https://$(hostname -I | awk '{print $1}'):8006/#v1:0:=qemu%2F${TARGET_VMID}:4::::::"
echo ""
echo "Next steps:"
echo "  1. Connect to VM console"
echo "  2. Complete Windows OOBE if needed"
echo "  3. Install Oracle 21c XE or SE"
echo "  4. Run ROA setup scripts"
echo ""
echo "To delete this VM when done:"
echo "  qm stop $TARGET_VMID"
echo "  qm destroy $TARGET_VMID"
echo ""

# -----------------------------------------------------------------------------
# Helper Commands
# -----------------------------------------------------------------------------

# Print helpful commands
cat << 'COMMANDS'
# Useful Proxmox commands:

# List all VMs
qm list

# VM status
qm status TARGET_VMID

# Start/Stop/Restart VM
qm start TARGET_VMID
qm stop TARGET_VMID
qm restart TARGET_VMID

# Access VM console
qm terminal TARGET_VMID

# Clone with different storage
qm clone 300 TARGET_VMID --name NAME --full --storage local-lvm

# Snapshot before testing
qm snapshot TARGET_VMID snap-before-oracle --description "Before Oracle install"

# Rollback to snapshot
qm rollback TARGET_VMID snap-before-oracle

# Delete VM
qm stop TARGET_VMID && qm destroy TARGET_VMID

COMMANDS

exit 0