resource "aws_vpc" "main_vpc" {
  cidr_block = var.vpc_cidr_block

  tags = merge(var.common_tags, {
    Name = var.vpc_name
  })
}

data "aws_availability_zones" "az" {
  filter {
    name   = "opt-in-status"
    values = ["opt-in-not-required"]
  }
}

resource "aws_subnet" "subnet" {
  for_each = var.subnets

  vpc_id     = aws_vpc.main_vpc.id
  cidr_block = each.value.cidr
  availability_zone   = element(data.aws_availability_zones.az.names, each.value.az_id)

  tags = merge(var.common_tags, {
    Name = "${var.subnet_name_prefix}-${each.key}"
  })
}