terraform {
  required_version = ">= 1.7.0"
  required_providers {
    hcloud = {
      source  = "hetznercloud/hcloud"
      version = "~> 1.49"
    }
    template = {
      source  = "hashicorp/template"
      version = "~> 2.2"
    }
  }
}

provider "hcloud" {
  token = var.hcloud_token
}

locals {
  inventory = yamldecode(var.inventory_yaml != null ? var.inventory_yaml : file("${path.module}/../../inventory/servers.yaml"))
  servers = {
    for server in local.inventory.servers : server.name => server
    if server.provider == "hetzner" && server.lifecycle_mode == "provider-managed"
  }
  cloud_init = file("${path.module}/cloud_init.yaml")
}

resource "hcloud_ssh_key" "admin" {
  count      = length(local.servers) > 0 ? 1 : 0
  name       = "railliance-admin"
  public_key = file("${path.module}/../../keys/admin_ssh.pub")
}

resource "hcloud_server" "srv" {
  for_each    = local.servers
  name        = each.value.name
  image       = each.value.provisioning.image
  server_type = each.value.provisioning.server_type
  location    = each.value.provisioning.region
  ssh_keys    = [hcloud_ssh_key.admin[0].id]
  user_data   = local.cloud_init

  labels = {
    role   = each.value.provisioning.role
    labels = join(",", try(each.value.provisioning.labels, []))
    env    = "default"
  }
}

output "servers" {
  value = { for k, v in hcloud_server.srv : k => v.ipv4_address }
}

output "managed_server_names" {
  value = sort(keys(local.servers))
}