terraform {
  required_providers {
    proxmox = {
      source  = "bpg/proxmox"
      version = "= 0.81.0"
    }
  }
}

locals {
  dump_name = "qemu-nixos-fediversity-${var.category}.raw"
}

# https://registry.terraform.io/providers/bpg/proxmox/latest/docs
provider "proxmox" {
  endpoint = "https://${var.host}:8006/"
  insecure = true

  ssh {
    agent = true
    # uncomment and configure if using api_token instead of password
    username = "root"
    # node {
    #   name = "${var.node_name}"
    #   address = "${var.host}"
    #   # port = 22
    # }
  }

  # # Choose one authentication method:
  # api_token = var.virtual_environment_api_token
  # # OR
  username  = var.proxmox_user
  password  = var.proxmox_password
  # # OR
  # auth_ticket           = var.virtual_environment_auth_ticket
  # csrf_prevention_token = var.virtual_environment_csrf_prevention_token
}

# # FIXME move to host
# # FIXME add proxmox
# data "external" "base-hash" {
#   program = ["sh", "-c", "echo \"{\\\"hash\\\":\\\"$(nix-hash ${path.module}/../common/nixos/base.nix)\\\"}\""]
# }

# # hash of our code directory, used to trigger re-deploy
# # FIXME calculate separately to reduce false positives
# data "external" "hash" {
#   program = ["sh", "-c", "echo \"{\\\"hash\\\":\\\"$(nix-hash ..)\\\"}\""]
# }

# FIXME move to host
# FIXME switch to base image shared between jobs as upload seems a bottleneck? e.g. by:
# - recursive TF
# - hash in name over overwrite
resource "proxmox_virtual_environment_file" "upload" {
  # # https://developer.hashicorp.com/terraform/plugin/sdkv2/resources/retries-and-customizable-timeouts
  # timeouts {
  #   create = "60m"
  # }

  # content_type - (Optional) The content type. If not specified, the content type will be inferred from the file extension. Valid values are:
  #     backup (allowed extensions: .vzdump, .tar.gz, .tar.xz, tar.zst)
  #     iso (allowed extensions: .iso, .img)
  #     snippets (allowed extensions: any)
  #     import (allowed extensions: .raw, .qcow2, .vmdk)
  #     vztmpl (allowed extensions: .tar.gz, .tar.xz, tar.zst)
  # content_type = "backup"
  content_type = "import"
  # https://192.168.51.81:8006/#v1:0:=storage%2Fnode051%2Flocal:4::=contentIso:::::
  # PVE -> Datacenter -> Storage -> local -> Edit -> General -> Content -> check Import + Disk Images -> OK
  # that UI action also adds it in `/etc/pve/storage.cfg`
  datastore_id = "local"
  # datastore_id = "local-lvm"
  # datastore_id = "backup"
  node_name    = var.node_name
  overwrite = true
  timeout_upload = 3600
  # timeout_upload = 1

  source_file {
    # path = "/tmp/proxmox-image/${local.dump_name}"
    path = var.image
    file_name = local.dump_name
  }
}

# resource "proxmox_virtual_environment_download_file" "latest_ubuntu_22_jammy_qcow2_img" {
#   content_type = "import"
#   datastore_id = "local"
#   node_name    = var.node_name
#   url = "https://cloud-images.ubuntu.com/jammy/current/jammy-server-cloudimg-amd64.img"
#   # need to rename the file to *.qcow2 to indicate the actual file format for import
#   file_name = "jammy-server-cloudimg-amd64.qcow2"
# }

resource "proxmox_virtual_environment_vm" "nix_vm" {
  lifecycle {
    ignore_changes = ["disk.import_from"]
  }

  node_name      = var.node_name
  pool_id        = var.pool_id
  description    = var.description
  started        = true

  # https://wiki.nixos.org/wiki/Virt-manager#Guest_Agent
  agent {
    enabled = true
    # timeout = "15m"
  }

  cpu {
    type         = "x86-64-v2-AES"
    cores        = var.cores
    sockets      = var.sockets
    numa         = true
  }

  memory {
    dedicated    = var.memory
  }

  disk {
    # datastore_id = "linstor_storage"
    datastore_id = "local"
    file_format  = "raw"
    interface    = "scsi0"
    discard      = "on"
    iothread     = true
    size         = var.disk_size
    ssd          = true
    backup       = false
    cache        = "none"

    # import_from  = "local:import/vzdump-qemu-nixos-fediversity-test.qcow2"
    # import_from  = "local:import/vzdump-qemu-nixos-fediversity-test.raw"
    import_from  = proxmox_virtual_environment_file.upload.id
    # import_from  = proxmox_virtual_environment_download_file.latest_ubuntu_22_jammy_qcow2_img.id
  }

  efi_disk {
    # datastore_id = "linstor_storage"
    datastore_id = "local"
    file_format  = "raw"
    type         = "4m"
  }

  network_device {
    model        = "virtio"
    bridge       = "vnet1306"
  }

  operating_system {
    type         = "l26"
  }

  scsi_hardware  = "virtio-scsi-single"
  bios           = "ovmf"
}

module "nixos-rebuild" {
  depends_on = [
    proxmox_virtual_environment_vm.nix_vm
  ]

  source = "../tf-single-host"

  nixos_conf = var.nixos_conf
  username = var.ssh_user
  host = proxmox_virtual_environment_vm.nix_vm.ipv4_addresses[0][0]
  key_file = var.key_file
  ssh_opts = var.ssh_opts
}