packer {
  required_plugins {
    proxmox = {
      version = "~> 1"
      source  = "github.com/hashicorp/proxmox"
    }
    windows-update = {
      version = "0.17.3"
      source  = "github.com/rgl/windows-update"
    }
  }
}

# -----------------------------------------------------------------------------
# Source: Proxmox VM definition
# -----------------------------------------------------------------------------
source "proxmox-iso" "ws2022" {
  # Proxmox connection
  proxmox_url              = var.proxmox_url
  username                 = var.proxmox_token_id
  token                    = var.proxmox_token_secret
  node                     = var.proxmox_node
  insecure_skip_tls_verify = var.proxmox_skip_tls

  # VM metadata
  vm_name              = var.vm_name
  template_description = "Windows Server 2022 Datacenter - Cloudbase-Init - Built ${formatdate("YYYY-MM-DD", timestamp())}"
  vm_id                = var.vm_id

  # Hardware
  os           = "win11"
  memory       = var.vm_memory
  cores        = var.vm_cores
  cpu_type     = "x86-64-v3"
  machine      = "pc-q35-10.1"
  bios         = "ovmf"
  qemu_agent   = true

  efi_config {
    efi_storage_pool  = var.storage_pool
    efi_type          = "4m"
    pre_enrolled_keys = true
  }

  scsi_controller = "virtio-scsi-single"

  disks {
    type         = "scsi"
    disk_size    = var.disk_size
    storage_pool = var.storage_pool
    format       = "raw"
  }

  network_adapters {
    model    = "virtio"
    bridge   = var.network_bridge
    firewall = false
  }

  # Windows Server 2022 ISO
  iso_file = var.iso_file

  # --- KEY: dynamically generated ISO with templated Autounattend.xml ---
  additional_iso_files {
    cd_content = {
      "Autounattend.xml" = templatefile("answer_files/Autounattend.xml.pkrtpl", {
        admin_password  = var.admin_password
        image_index     = var.image_index
        product_key     = var.product_key
        locale          = var.locale
        timezone        = var.timezone
        virtio_drive    = var.virtio_drive_letter
        os_partition_mb = var.os_partition_mb
      })
    }
    cd_label         = "OEMDRV"
    iso_storage_pool = var.iso_storage_pool
    unmount          = true
  }

  # VirtIO drivers ISO
  additional_iso_files {
    device           = "sata1"
    iso_file         = var.virtio_iso
    iso_storage_pool = var.iso_storage_pool
    unmount          = true
  }

  # WinRM communicator - password injected from variable
  communicator   = "winrm"
  winrm_username = "Administrator"
  winrm_password = var.admin_password
  winrm_timeout  = "90m"
  winrm_insecure = true
  winrm_use_ssl  = false

  boot_wait    = "5s"
  boot_command = ["<spacebar><spacebar><spacebar>"]
}

# -----------------------------------------------------------------------------
# Build: provisioning steps
# -----------------------------------------------------------------------------
build {
  sources = ["source.proxmox-iso.ws2022"]

  # Install and configure Cloudbase-Init
  provisioner "powershell" {
    script = "scripts/install-cloudbase-init.ps1"
  }

  # Sysprep with Cloudbase-Init's unattend
  provisioner "powershell" {
    script = "scripts/sysprep.ps1"
  }
}