outputs.tf

output "vpc_attributes" {
  description = "VPC resource attributes. Full output of aws_vpc."
  value       = local.vpc
}

output "azs" {
  description = "List of AZs where subnets are created."
  value       = local.azs
}

output "transit_gateway_attachment_id" {
  description = "Transit gateway attachment id."
  value       = try(aws_ec2_transit_gateway_vpc_attachment.tgw[0].id, null)
}

output "core_network_attachment" {
  description = "AWS Cloud WAN's core network attachment. Full output of aws_networkmanager_vpc_attachment."
  value       = try(aws_networkmanager_vpc_attachment.cwan[0], null)
}

output "private_subnet_attributes_by_az" {
  value       = try(aws_subnet.private, null)
  description = <<-EOF
  Map of all private subnets containing their attributes.

  Example:
  ```
  private_subnet_attributes = {
    "private/us-east-1a" = {
      "arn" = "arn:aws:ec2:us-east-1:<>:subnet/subnet-04a86315c4839b519"
      "assign_ipv6_address_on_creation" = false
      ...
      <all attributes of subnet: https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/subnet#attributes-reference>
    }
    "us-east-1b" = {...)
  }
  ```
EOF
}

output "public_subnet_attributes_by_az" {
  value       = try(aws_subnet.public, null)
  description = <<-EOF
  Map of all public subnets containing their attributes.

  Example:
  ```
  public_subnet_attributes = {
    "us-east-1a" = {
      "arn" = "arn:aws:ec2:us-east-1:<>:subnet/subnet-04a86315c4839b519"
      "assign_ipv6_address_on_creation" = false
      ...
      <all attributes of subnet: https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/subnet#attributes-reference>
    }
    "us-east-1b" = {...)
  }
  ```
EOF
}

output "tgw_subnet_attributes_by_az" {
  value       = try(aws_subnet.tgw, null)
  description = <<-EOF
  Map of all tgw subnets containing their attributes.

  Example:
  ```
  tgw_subnet_attributes = {
    "us-east-1a" = {
      "arn" = "arn:aws:ec2:us-east-1:<>:subnet/subnet-04a86315c4839b519"
      "assign_ipv6_address_on_creation" = false
      ...
      <all attributes of subnet: https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/subnet#attributes-reference>
    }
    "us-east-1b" = {...)
  }
  ```
EOF
}

output "core_network_subnet_attributes_by_az" {
  value       = try(aws_subnet.cwan, null)
  description = <<-EOF
  Map of all core_network subnets containing their attributes.

  Example:
  ```
  core_network_subnet_attributes = {
    "us-east-1a" = {
      "arn" = "arn:aws:ec2:us-east-1:<>:subnet/subnet-04a86315c4839b519"
      "assign_ipv6_address_on_creation" = false
      ...
      <all attributes of subnet: https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/subnet#attributes-reference>
    }
    "us-east-1b" = {...)
  }
  ```
EOF
}

output "rt_attributes_by_type_by_az" {
  value = {
    # TODO: omit keys if value is null
    "private"         = aws_route_table.private,
    "public"          = aws_route_table.public
    "transit_gateway" = aws_route_table.tgw
    "core_network"    = aws_route_table.cwan
  }
  description = <<-EOF
  Map of route tables by type => az => route table attributes. Example usage: module.vpc.route_table_by_subnet_type.private.id

  Example:
  ```
  route_table_attributes_by_type_by_az = {
    "private" = {
      "us-east-1a" = {
        "id" = "rtb-0e77040c0598df003"
        "route_table_id" = "rtb-0e77040c0598df003"
        "tags" = tolist([
          {
            "key" = "Name"
            "value" = "private-us-east-1a"
          },
        ])
        "vpc_id" = "vpc-033e054f49409592a"
      }
      "us-east-1b" = { ... }
    "public" = { ... }
  ```
EOF
}

output "nat_gateway_attributes_by_az" {
  value       = try(aws_nat_gateway.main, null)
  description = <<-EOF
  Map of nat gateway resource attributes by AZ.

  Example:
  ```
  nat_gateway_attributes_by_az = {
    "us-east-1a" = {
      "allocation_id" = "eipalloc-0e8b20303eea88b13"
      "connectivity_type" = "public"
      "id" = "nat-0fde39f9550f4abb5"
      "network_interface_id" = "eni-0d422727088bf9a86"
      "private_ip" = "10.0.3.40"
      "public_ip" = <>
      "subnet_id" = "subnet-0f11c92e439c8ab4a"
      "tags" = tomap({
        "Name" = "nat-my-public-us-east-1a"
      })
      "tags_all" = tomap({
        "Name" = "nat-my-public-us-east-1a"
      })
    }
    "us-east-1b" = { ... }
  }
  ```
EOF
}

output "natgw_id_per_az" {
  value       = try(local.nat_per_az, null)
  description = <<-EOF
  Map of nat gateway IDs for each resource. Will be duplicate ids if your var.subnets.public.nat_gateway_configuration = "single_az".

  Example:
  ```
  natgw_id_per_az = {
    "us-east-1a" = {
      "id" = "nat-0fde39f9550f4abb5"
    }
    "us-east-1b" = {
      "id" = "nat-0fde39f9550f4abb5"
     }
  }
  ```
EOF
}