variable "serverctl_master_count" {
  default = 0
}

variable "serverctl_node_count" {
  default = 0
}

variable "serverctl_mesh_count" {
  default = 4
}

resource "hcloud_placement_group" "serverctl_master" {
  name = "serverctl_master_group"
  type = "spread"
}

resource "hcloud_server" "serverctl_master" {
  count       = var.serverctl_master_count
  name        = "serverctl-master-${count.index}"
  image       = "debian-11"
  server_type = "cx11"
  ssh_keys    = [
    var.hcloud_serverctl_ssh_key_id
  ]
  placement_group_id = hcloud_placement_group.serverctl_master.id


  lifecycle {
    create_before_destroy = true
  }

  provisioner "remote-exec" {
    inline = ["sudo apt update", "sudo apt install python3 -y", "echo Done!"]

    connection {
      host        = self.ipv4_address
      type        = "ssh"
      user        = "root"
      private_key = file(var.pvt_key)
    }
  }
}

resource "hcloud_placement_group" "serverctl_node" {
  name = "serverctl_node_group"
  type = "spread"
}

resource "hcloud_server" "serverctl_node" {
  count       = var.serverctl_node_count
  name        = "serverctl-node-${count.index}"
  image       = "debian-11"
  server_type = "cx11"
  ssh_keys    = [
    var.hcloud_serverctl_ssh_key_id
  ]
  placement_group_id = hcloud_placement_group.serverctl_node.id


  lifecycle {
    create_before_destroy = true
  }

  provisioner "remote-exec" {
    inline = ["sudo apt update", "sudo apt install python3 -y", "echo Done!"]

    connection {
      host        = self.ipv4_address
      type        = "ssh"
      user        = "root"
      private_key = file(var.pvt_key)
    }
  }
}

resource "hcloud_placement_group" "serverctl_mesh" {
  name = "serverctl_mesh_group"
  type = "spread"
}

resource "hcloud_server" "serverctl_mesh" {
  count       = var.serverctl_mesh_count
  name        = "serverctl-mesh-${count.index}"
  image       = "debian-11"
  server_type = "cx11"
  ssh_keys    = [
    var.hcloud_serverctl_ssh_key_id
  ]
  placement_group_id = hcloud_placement_group.serverctl_mesh.id


  lifecycle {
    create_before_destroy = true
  }

  provisioner "remote-exec" {
    inline = ["sudo apt update", "sudo apt install python3 -y", "echo Done!"]

    connection {
      host        = self.ipv4_address
      type        = "ssh"
      user        = "root"
      private_key = file(var.pvt_key)
    }
  }
}

resource "local_file" "hosts_cfg" {
  content = templatefile("${path.module}/templates/hosts.tftpl",
    {
      serverctl_masters    = hcloud_server.serverctl_master.*.ipv4_address
      serverctl_nodes      = hcloud_server.serverctl_node.*.ipv4_address
      serverctl_mesh_nodes = hcloud_server.serverctl_mesh.*.ipv4_address
    }
  )
  filename = "ansible/inventory/hosts.cfg"
}