#!/bin/bash
# Migrate VMIDs 100-130 and 7800-7811 using backup/restore method
# VMIDs 100-130 → thin1 storage
# VMIDs 7800-7811 → local storage

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "$SCRIPT_DIR/load-physical-inventory.sh" 2>/dev/null || true

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
CYAN='\033[0;36m'
NC='\033[0m'

log_info() { echo -e "${BLUE}[INFO]${NC} $1"; }
log_success() { echo -e "${GREEN}[✓]${NC} $1"; }
log_warn() { echo -e "${YELLOW}[⚠]${NC} $1"; }
log_error() { echo -e "${RED}[✗]${NC} $1"; }
log_section() { echo -e "\n${CYAN}=== $1 ===${NC}\n"; }

SOURCE_NODE="r630-02"
TARGET_NODE="r630-01"
BACKUP_STORAGE="local"

# VMs to migrate
VMIDS_100_130=(100 101 102 103 104 105 130)
VMIDS_7800_7811=(7800 7801 7802 7810 7811)

log_section "VM Migration to r630-01 (Backup/Restore)"

log_info "Source Node: $SOURCE_NODE"
log_info "Target Node: $TARGET_NODE"
log_info "VMIDs 100-130 → thin1 storage (96 GB)"
log_info "VMIDs 7800-7811 → local storage (210 GB)"
echo ""

log_warn "This will migrate ${#VMIDS_100_130[@]} + ${#VMIDS_7800_7811[@]} = $((${#VMIDS_100_130[@]} + ${#VMIDS_7800_7811[@]})) containers using backup/restore"
echo ""

read -p "Continue with migration? (yes/no): " confirm
if [[ "$confirm" != "yes" ]]; then
    log_info "Migration cancelled."
    exit 0
fi

FAILED=()
SUCCESS=()

# Migrate VMIDs 100-130 to thin1
log_section "Migrating VMIDs 100-130 to thin1 storage"

for vmid in "${VMIDS_100_130[@]}"; do
    log_info "Migrating VMID $vmid..."
    
    # Check if VM exists
    if ! sshpass -p "password" ssh -o StrictHostKeyChecking=no root@192.168.11.12 \
        "pct list 2>/dev/null | grep -q \"^$vmid\"" 2>/dev/null; then
        log_warn "VMID $vmid not found, skipping"
        continue
    fi
    
    # Create backup (this will work since VMs are stopped)
    log_info "  Creating backup..."
    sshpass -p "password" ssh -o StrictHostKeyChecking=no root@192.168.11.12 \
        "vzdump $vmid --storage $BACKUP_STORAGE --compress gzip --mode stop 2>&1 | tail -5"
    
    # Find backup file
    BACKUP_FILE=$(sshpass -p "password" ssh -o StrictHostKeyChecking=no root@192.168.11.12 \
        "ls -t /var/lib/vz/dump/vzdump-lxc-$vmid-*.tar.gz 2>/dev/null | head -1" 2>/dev/null)
    
    if [ -z "$BACKUP_FILE" ]; then
        log_error "  Backup file not found for VMID $vmid"
        FAILED+=($vmid)
        continue
    fi
    
    log_info "  Backup: $BACKUP_FILE"
    
    # Restore to target
    log_info "  Restoring to $TARGET_NODE (thin1 storage)..."
    RESTORE_OUTPUT=$(sshpass -p "password" ssh -o StrictHostKeyChecking=no root@192.168.11.12 \
        "pct restore $vmid $BACKUP_FILE --storage thin1 --target $TARGET_NODE 2>&1")
    
    if [ $? -eq 0 ]; then
        log_success "  VMID $vmid migrated successfully"
        SUCCESS+=($vmid)
        
        # Remove from source
        sshpass -p "password" ssh -o StrictHostKeyChecking=no root@192.168.11.12 \
            "pct destroy $vmid 2>&1" || true
    else
        log_error "  Restore failed: $RESTORE_OUTPUT"
        FAILED+=($vmid)
    fi
    echo ""
done

# Migrate VMIDs 7800-7811 to local storage
log_section "Migrating VMIDs 7800-7811 to local storage"

for vmid in "${VMIDS_7800_7811[@]}"; do
    log_info "Migrating VMID $vmid..."
    
    # Check if VM exists
    if ! sshpass -p "password" ssh -o StrictHostKeyChecking=no root@192.168.11.12 \
        "pct list 2>/dev/null | grep -q \"^$vmid\"" 2>/dev/null; then
        log_warn "VMID $vmid not found, skipping"
        continue
    fi
    
    # Create backup
    log_info "  Creating backup..."
    sshpass -p "password" ssh -o StrictHostKeyChecking=no root@192.168.11.12 \
        "vzdump $vmid --storage $BACKUP_STORAGE --compress gzip --mode stop 2>&1 | tail -5"
    
    # Find backup file
    BACKUP_FILE=$(sshpass -p "password" ssh -o StrictHostKeyChecking=no root@192.168.11.12 \
        "ls -t /var/lib/vz/dump/vzdump-lxc-$vmid-*.tar.gz 2>/dev/null | head -1" 2>/dev/null)
    
    if [ -z "$BACKUP_FILE" ]; then
        log_error "  Backup file not found for VMID $vmid"
        FAILED+=($vmid)
        continue
    fi
    
    log_info "  Backup: $BACKUP_FILE"
    
    # Restore to target
    log_info "  Restoring to $TARGET_NODE (local storage)..."
    RESTORE_OUTPUT=$(sshpass -p "password" ssh -o StrictHostKeyChecking=no root@192.168.11.12 \
        "pct restore $vmid $BACKUP_FILE --storage local --target $TARGET_NODE 2>&1")
    
    if [ $? -eq 0 ]; then
        log_success "  VMID $vmid migrated successfully"
        SUCCESS+=($vmid)
        
        # Remove from source
        sshpass -p "password" ssh -o StrictHostKeyChecking=no root@192.168.11.12 \
            "pct destroy $vmid 2>&1" || true
    else
        log_error "  Restore failed: $RESTORE_OUTPUT"
        FAILED+=($vmid)
    fi
    echo ""
done

log_section "Migration Summary"

log_info "Successful: ${#SUCCESS[@]}"
if [ ${#SUCCESS[@]} -gt 0 ]; then
    echo "  VMIDs: ${SUCCESS[*]}"
fi

if [ ${#FAILED[@]} -gt 0 ]; then
    log_warn "Failed: ${#FAILED[@]}"
    echo "  VMIDs: ${FAILED[*]}"
fi

log_section "Verification"

sshpass -p "password" ssh -o StrictHostKeyChecking=no root@192.168.11.11 \
    "pct list 2>/dev/null | grep -E '100|101|102|103|104|105|130|7800|7801|7802|7810|7811'" 2>/dev/null || true

log_section "Complete"