##############################
# OpenStack Provider
##############################
provider "openstack" {
  user_name   = ""
  tenant_name = ""
  password    = ""
  auth_url    = "https://auth.pscloud.io/v3/"
  region      = "kz-ala-1"
}

##############################
# Variables
##############################
variable "image_id" {
  default = "22e935a1-dffe-43d5-939f-98b5a2c92771"
}

##############################
# SSH Keypair Import
##############################
resource "openstack_compute_keypair_v2" "ssh" {
  name       = "keypair_name"
  public_key = ""
}

##############################
# Create Private Network
##############################
resource "openstack_networking_network_v2" "private_network" {
  name           = "network_name"
  admin_state_up = true
}

##############################
# Create Subnet
##############################
resource "openstack_networking_subnet_v2" "private_subnet" {
  name             = "subnet_name"
  network_id       = openstack_networking_network_v2.private_network.id
  cidr             = "192.168.0.0/24"
  dns_nameservers  = ["195.210.46.195", "195.210.46.132"]
  ip_version       = 4
  enable_dhcp      = true

  depends_on = [
    openstack_networking_network_v2.private_network
  ]
}

##############################
# Create Router
##############################
resource "openstack_networking_router_v2" "router" {
  name                = "router_name"
  external_network_id = "83554642-6df5-4c7a-bf55-21bc74496109" # Floating IP network UUID
  admin_state_up      = true

  depends_on = [
    openstack_networking_network_v2.private_network
  ]
}

##############################
# Add Interface to Router
##############################
resource "openstack_networking_router_interface_v2" "router_interface" {
  router_id = openstack_networking_router_v2.router.id
  subnet_id = openstack_networking_subnet_v2.private_subnet.id

  depends_on = [
    openstack_networking_router_v2.router
  ]
}

##############################
# Allocate Floating IP
##############################
resource "openstack_networking_floatingip_v2" "instance_fip" {
  pool = "FloatingIP Net"
}

##############################
# Security Group
##############################
resource "openstack_compute_secgroup_v2" "security_group" {
  name        = "sg_name"
  description = "Allow ICMP and SSH"

  rule {
    from_port   = 22
    to_port     = 22
    ip_protocol = "tcp"
    cidr        = "0.0.0.0/0"
  }

  rule {
    from_port   = -1
    to_port     = -1
    ip_protocol = "icmp"
    cidr        = "0.0.0.0/0"
  }
}

##############################
# Create Boot Volume
##############################
resource "openstack_blockstorage_volume_v3" "disk" {
  name                 = "volume_name"
  volume_type          = "ceph-ssd" # Available: ceph-ssd, ceph-hdd, ceph-backup
  size                 = 25
  image_id             = var.image_id
  enable_online_resize = true
}

##############################
# Create Compute Instance
##############################
resource "openstack_compute_instance_v2" "instance" {
  name              = "instance_name"
  flavor_name       = "d1.ram2cpu1"
  key_pair          = openstack_compute_keypair_v2.ssh.name
  security_groups   = [openstack_compute_secgroup_v2.security_group.name]

  network {
    uuid = openstack_networking_network_v2.private_network.id
  }

  block_device {
    uuid                  = openstack_blockstorage_volume_v3.disk.id
    boot_index            = 0
    source_type           = "volume"
    destination_type      = "volume"
    delete_on_termination = false
  }

  depends_on = [
    openstack_networking_network_v2.private_network,
    openstack_blockstorage_volume_v3.disk
  ]
}

##############################
# Associate Floating IP
##############################
resource "openstack_compute_floatingip_associate_v2" "instance_fip_association" {
  floating_ip = openstack_networking_floatingip_v2.instance_fip.address
  instance_id = openstack_compute_instance_v2.instance.id
  fixed_ip    = openstack_compute_instance_v2.instance.access_ip_v4
}