# Port sources: services/*/docker-compose.yml (published ports) and services/todo.md
# (the documented UFW allow-list). dev has no firewall in architecture.md, but we add
# one anyway for baseline safety - see conversation history.

resource "hcloud_firewall" "dev" {
  name = "dev-firewall"

  rule { # server ssh
    direction  = "in"
    protocol   = "tcp"
    port       = "22"
    source_ips = var.allowed_ssh_source_ips
  }

  rule { # gitea ssh (git.luke-else.co.uk, published as 222:22)
    direction  = "in"
    protocol   = "tcp"
    port       = "222"
    source_ips = ["0.0.0.0/0", "::/0"]
  }

  rule { # TraefikRunner http/https (git.luke-else.co.uk, cicd.luke-else.co.uk)
    direction  = "in"
    protocol   = "tcp"
    port       = "80"
    source_ips = ["0.0.0.0/0", "::/0"]
  }

  rule {
    direction  = "in"
    protocol   = "tcp"
    port       = "443"
    source_ips = ["0.0.0.0/0", "::/0"]
  }

  rule { # traffic from prod over the private network
    direction  = "in"
    protocol   = "tcp"
    port       = "1-65535"
    source_ips = [var.network_ip_range]
  }

  rule {
    direction  = "in"
    protocol   = "udp"
    port       = "1-65535"
    source_ips = [var.network_ip_range]
  }
}

resource "hcloud_firewall" "prod" {
  name = "prod-firewall"

  rule { # server ssh
    direction  = "in"
    protocol   = "tcp"
    port       = "22"
    source_ips = var.allowed_ssh_source_ips
  }

  rule { # Traefik http/https (Websites, Bitwarden, Misc, Tracking)
    direction  = "in"
    protocol   = "tcp"
    port       = "80"
    source_ips = ["0.0.0.0/0", "::/0"]
  }

  rule {
    direction  = "in"
    protocol   = "tcp"
    port       = "443"
    source_ips = ["0.0.0.0/0", "::/0"]
  }

  rule { # mongo via Traefik tcp entrypoint (Database)
    direction  = "in"
    protocol   = "tcp"
    port       = "27017"
    source_ips = ["0.0.0.0/0", "::/0"]
  }

  rule { # rustdesk hbbs
    direction  = "in"
    protocol   = "tcp"
    port       = "21115"
    source_ips = ["0.0.0.0/0", "::/0"]
  }

  rule {
    direction  = "in"
    protocol   = "tcp"
    port       = "21116"
    source_ips = ["0.0.0.0/0", "::/0"]
  }

  rule {
    direction  = "in"
    protocol   = "udp"
    port       = "21116"
    source_ips = ["0.0.0.0/0", "::/0"]
  }

  rule { # rustdesk hbbr
    direction  = "in"
    protocol   = "tcp"
    port       = "21117"
    source_ips = ["0.0.0.0/0", "::/0"]
  }

  rule {
    direction  = "in"
    protocol   = "tcp"
    port       = "21119"
    source_ips = ["0.0.0.0/0", "::/0"]
  }

  rule { # traffic from dev over the private network
    direction  = "in"
    protocol   = "tcp"
    port       = "1-65535"
    source_ips = [var.network_ip_range]
  }

  rule {
    direction  = "in"
    protocol   = "udp"
    port       = "1-65535"
    source_ips = [var.network_ip_range]
  }
}

resource "hcloud_firewall" "vpn" {
  name = "vpn-firewall"

  rule { # server ssh
    direction  = "in"
    protocol   = "tcp"
    port       = "22"
    source_ips = var.allowed_ssh_source_ips
  }

  rule { # TraefikVPN http/https (traefik.vpn.luke-else.co.uk)
    direction  = "in"
    protocol   = "tcp"
    port       = "80"
    source_ips = ["0.0.0.0/0", "::/0"]
  }

  rule {
    direction  = "in"
    protocol   = "tcp"
    port       = "443"
    source_ips = ["0.0.0.0/0", "::/0"]
  }

  rule { # OpenVPN tunnel - always direct to this server's public IP, never via a load balancer
    direction  = "in"
    protocol   = "udp"
    port       = "1194"
    source_ips = ["0.0.0.0/0", "::/0"]
  }
}