#!/bin/bash
source ~/.bashrc
# Fix VM Disk Sizes
# Expands disk sizes for VMs cloned from template

set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"

# Load environment variables
if [ -f "$PROJECT_ROOT/.env" ]; then
    set -a
    source <(grep -v '^#' "$PROJECT_ROOT/.env" | grep -v '^$' | sed 's/#.*$//' | grep '=')
    set +a
fi

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'

PVE_USERNAME="${PVE_USERNAME:-root@pam}"
PVE_PASSWORD="${PVE_ROOT_PASS:-}"
PROXMOX_URL="${PROXMOX_ML110_URL:-https://192.168.1.206:8006}"
PROXMOX_NODE="${PROXMOX_NODE:-pve}"

log_info() {
    echo -e "${GREEN}[INFO]${NC} $1"
}

log_warn() {
    echo -e "${YELLOW}[WARN]${NC} $1"
}

log_error() {
    echo -e "${RED}[ERROR]${NC} $1"
}

get_api_token() {
    local response=$(curl -s -k --connect-timeout 10 --max-time 15 \
        -d "username=$PVE_USERNAME&password=$PVE_PASSWORD" \
        "$PROXMOX_URL/api2/json/access/ticket" 2>&1)
    
    if echo "$response" | grep -q '"data"'; then
        local ticket=$(echo "$response" | grep -o '"ticket":"[^"]*' | cut -d'"' -f4)
        local csrf_token=$(echo "$response" | grep -o '"CSRFPreventionToken":"[^"]*' | cut -d'"' -f4)
        echo "$ticket|$csrf_token"
    else
        echo ""
    fi
}

resize_disk() {
    local vmid=$1
    local size=$2
    local name=$3
    
    log_info "Resizing disk for VM $vmid ($name) to $size..."
    
    local tokens=$(get_api_token)
    if [ -z "$tokens" ]; then
        log_error "Failed to authenticate with Proxmox"
        return 1
    fi
    
    local ticket=$(echo "$tokens" | cut -d'|' -f1)
    local csrf_token=$(echo "$tokens" | cut -d'|' -f2)
    
    # Get current disk configuration
    local current_config=$(curl -s -k -H "Cookie: PVEAuthCookie=$ticket" \
        -H "CSRFPreventionToken: $csrf_token" \
        "$PROXMOX_URL/api2/json/nodes/$PROXMOX_NODE/qemu/$vmid/config")
    
    local current_disk=$(echo "$current_config" | python3 -c "import sys, json; d=json.load(sys.stdin).get('data', {}); print(d.get('scsi0', ''))" 2>/dev/null)
    
    if [ -z "$current_disk" ]; then
        log_error "Could not get current disk configuration"
        return 1
    fi
    
    # Extract storage and disk name
    local storage=$(echo "$current_disk" | grep -o 'local-lvm:[^,]*' | cut -d':' -f2 | cut -d'-' -f1-2)
    local disk_name=$(echo "$current_disk" | grep -o 'vm-[0-9]*-disk-[0-9]*')
    
    # Stop VM if running
    local status=$(curl -s -k -H "Cookie: PVEAuthCookie=$ticket" \
        -H "CSRFPreventionToken: $csrf_token" \
        "$PROXMOX_URL/api2/json/nodes/$PROXMOX_NODE/qemu/$vmid/status/current" | \
        python3 -c "import sys, json; print(json.load(sys.stdin).get('data', {}).get('status', 'unknown'))" 2>/dev/null)
    
    if [ "$status" = "running" ]; then
        log_info "Stopping VM $vmid..."
        curl -s -k -X POST -H "Cookie: PVEAuthCookie=$ticket" \
            -H "CSRFPreventionToken: $csrf_token" \
            "$PROXMOX_URL/api2/json/nodes/$PROXMOX_NODE/qemu/$vmid/status/stop" > /dev/null
        sleep 5
    fi
    
    # Resize disk using resize endpoint
    log_info "Resizing disk to $size..."
    local resize_response=$(curl -s -k -X PUT \
        -H "Cookie: PVEAuthCookie=$ticket" \
        -H "CSRFPreventionToken: $csrf_token" \
        -d "disk=scsi0" \
        -d "size=$size" \
        "$PROXMOX_URL/api2/json/nodes/$PROXMOX_NODE/qemu/$vmid/resize" 2>&1)
    
    if echo "$resize_response" | grep -q '"data"'; then
        log_info "Disk resized successfully"
    else
        log_warn "Disk resize response: $resize_response"
        # Try alternative method - update config directly
        log_info "Trying alternative method..."
        curl -s -k -X PUT \
            -H "Cookie: PVEAuthCookie=$ticket" \
            -H "CSRFPreventionToken: $csrf_token" \
            -d "scsi0=local-lvm:$disk_name,iothread=1,size=$size" \
            "$PROXMOX_URL/api2/json/nodes/$PROXMOX_NODE/qemu/$vmid/config" > /dev/null 2>&1
    fi
    
    # Start VM if it was running
    if [ "$status" = "running" ]; then
        log_info "Starting VM $vmid..."
        curl -s -k -X POST -H "Cookie: PVEAuthCookie=$ticket" \
            -H "CSRFPreventionToken: $csrf_token" \
            "$PROXMOX_URL/api2/json/nodes/$PROXMOX_NODE/qemu/$vmid/status/start" > /dev/null
    fi
    
    return 0
}

main() {
    log_info "Fixing VM disk sizes"
    
    if [ -z "$PVE_PASSWORD" ]; then
        log_error "PVE_ROOT_PASS not set in .env"
        exit 1
    fi
    
    # VM definitions: vmid name size
    local vms=(
        "100 cloudflare-tunnel 40G"
        "101 k3s-master 80G"
        "102 git-server 100G"
        "103 observability 200G"
    )
    
    for vm_spec in "${vms[@]}"; do
        read -r vmid name size <<< "$vm_spec"
        resize_disk "$vmid" "$size" "$name"
        sleep 2
    done
    
    log_info "Disk size fixes completed!"
}

main "$@"