resource "aws_vpc" "mlsurvey_vpc" {
  cidr_block           = "10.0.0.0/16"
  enable_dns_hostnames = true
  enable_dns_support   = true
  tags = {
    Name = "ml-survey-vpc"
  }
}

resource "aws_subnet" "mlsurvey_public_subnet" {
  vpc_id                  = aws_vpc.mlsurvey_vpc.id
  cidr_block              = "10.0.1.0/24"
  map_public_ip_on_launch = true
  availability_zone       = "eu-central-1a"
  tags = {
    Name = "ml-survey-public"
  }
}

resource "aws_internet_gateway" "mlsurvey_internet_gateway" {
  vpc_id = aws_vpc.mlsurvey_vpc.id
  tags = {
    Name = "ml-survey-igw"
  }
}

resource "aws_route_table" "mlsurvey_public_rt" {
  vpc_id = aws_vpc.mlsurvey_vpc.id
  tags = {
    Name = "ml-survey-rt"
  }
}

resource "aws_route" "mlsurvey_default_route" {
  route_table_id         = aws_route_table.mlsurvey_public_rt.id
  destination_cidr_block = "0.0.0.0/0"
  gateway_id             = aws_internet_gateway.mlsurvey_internet_gateway.id
}

resource "aws_route_table_association" "mlsurvey_public_assoc" {
  subnet_id      = aws_subnet.mlsurvey_public_subnet.id
  route_table_id = aws_route_table.mlsurvey_public_rt.id
}

resource "aws_security_group" "mlsurvey_sg" {
  name        = "ml-survey-sg"
  description = "ml-survey security group"
  vpc_id      = aws_vpc.mlsurvey_vpc.id

  ingress {
    from_port   = 0
    to_port     = 0
    protocol    = "-1"
    cidr_blocks = ["0.0.0.0/0"]
  }

  egress {
    from_port   = 0
    to_port     = 0
    protocol    = "-1"
    cidr_blocks = ["0.0.0.0/0"]
  }
}

resource "aws_key_pair" "mlsurvey_auth" {
  key_name   = "ml-survey-key"
  public_key = file("~/.ssh/ml-survey-key.pub")
}

resource "aws_instance" "dev_node" {
  instance_type               = "t2.micro"
  ami                         = data.aws_ami.server_ami.id
  key_name                    = aws_key_pair.mlsurvey_auth.id
  vpc_security_group_ids      = [aws_security_group.mlsurvey_sg.id]
  subnet_id                   = aws_subnet.mlsurvey_public_subnet.id
  user_data                   = data.cloudinit_config.config.rendered
  user_data_replace_on_change = true
  tags = {
    Name = "dev-node"
  }
}

output "dev_node_public_ip" {
  value = aws_instance.dev_node.public_ip
}