====== module ======


  # Module to create Azure network resources
  
  variable "resource_group_name" {
    description = "Name of the resource group where network resources will be created."
  }
  
  variable "location" {
    description = "Location for the network resources."
  }
  
  variable "vnet_name" {
    description = "Name of the virtual network."
  }
  
  variable "vnet_address_space" {
    description = "Address space for the virtual network."
    type        = list(string)
  }
  
  variable "subnet_name" {
    description = "Name of the subnet."
  }
  
  variable "subnet_address_prefix" {
    description = "Address prefix for the subnet."
  }
  
  variable "public_ip_name" {
    description = "Name of the public IP address."
  }
  
  variable "firewall_name" {
    description = "Name of the firewall."
  }
  
  # Resource group
  resource "azurerm_resource_group" "example" {
    name     = var.resource_group_name
    location = var.location
  }
  
  # Virtual network
  resource "azurerm_virtual_network" "example" {
    name                = var.vnet_name
    address_space       = var.vnet_address_space
    location            = azurerm_resource_group.example.location
    resource_group_name = azurerm_resource_group.example.name
  }
  
  # Subnet
  resource "azurerm_subnet" "example" {
    name                 = var.subnet_name
    resource_group_name  = azurerm_resource_group.example.name
    virtual_network_name = azurerm_virtual_network.example.name
    address_prefix       = var.subnet_address_prefix
  }
  
  # Public IP address
  resource "azurerm_public_ip" "example" {
    name                = var.public_ip_name
    location            = azurerm_resource_group.example.location
    resource_group_name = azurerm_resource_group.example.name
    allocation_method   = "Static"
    sku                 = "Standard"
  }
  
  # Firewall
  resource "azurerm_firewall" "example" {
    name                = var.firewall_name
    location            = azurerm_resource_group.example.location
    resource_group_name = azurerm_resource_group.example.name
  
    ip_configuration {
      name                 = "configuration"
      subnet_id            = azurerm_subnet.example.id
      public_ip_address_id = azurerm_public_ip.example.id
    }
  }


====== use module ======


  module "network" {
    source                 = "./network"
    resource_group_name    = "example-resources"
    location               = "North Europe"
    vnet_name              = "testvnet"
    vnet_address_space     = ["10.0.0.0/16"]
    subnet_name            = "AzureFirewallSubnet"
    subnet_address_prefix  = "10.0.1.0/24"
    public_ip_name         = "testpip"
    firewall_name          = "testfirewall"
  }