resource "aws_vpc" "main" {
  cidr_block = var.address_space
}

resource "aws_internet_gateway" "main" {
  vpc_id = aws_vpc.main.id
}

resource "aws_subnet" "internal" {
  vpc_id                  = aws_vpc.main.id
  cidr_block              = var.subnet_cidr
  map_public_ip_on_launch = true
  depends_on              = [aws_internet_gateway.main]
}

resource "aws_route_table" "r" {
  vpc_id = aws_vpc.main.id

  route {
    cidr_block = "0.0.0.0/0"
    gateway_id = aws_internet_gateway.main.id
  }
}

resource "aws_route_table_association" "a" {
  subnet_id      = aws_subnet.internal.id
  route_table_id = aws_route_table.r.id
}