provider "aws" {}

data "aws_ami" "ubuntu" {
  most_recent = true

  filter {
    name   = "name"
    values = ["ubuntu/images/hvm-ssd/ubuntu-xenial-16.04-amd64-server-*"]
  }

  filter {
    name   = "virtualization-type"
    values = ["hvm"]
  }

  owners = ["099720109477"] # Canonical
}

resource "aws_security_group" "kumo_dojo" {
  name        = "kumo_dojo"
  description = "Allow any SSH traffic to this box, like a gangster do."

  ingress {
    from_port   = 22
    to_port     = 22
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }

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

  tags {
    Name = "Adds SSH access"
  }
}

resource "aws_key_pair" "kumo_dojo" {
  key_name   = "kumo_dojo_admin"
  public_key = "${file("kumo_dojo_admin.pub")}"
}

resource "aws_instance" "kumo_dojo" {
  ami                    = "${data.aws_ami.ubuntu.id}"
  instance_type          = "t2.micro"
  availability_zone      = "us-east-1a"
  vpc_security_group_ids = ["${aws_security_group.kumo_dojo.id}"]
  key_name               = "kumo_dojo_admin"
  provisioner "remote-exec" {
    connection {
      type        = "ssh"
      user        = "ubuntu"
      private_key = "${file("kumo_dojo_admin")}"
    }
    scripts = [
      "install_docker.sh"
    ]
  }
  provisioner "file" {
    connection {
      type        = "ssh"
      user        = "ubuntu"
      private_key = "${file("kumo_dojo_admin")}"
    }
    source      = "bot"
    destination = "~/bot"
  }
  provisioner "remote-exec" {
    connection {
      type        = "ssh"
      user        = "ubuntu"
      private_key = "${file("kumo_dojo_admin")}"
    }
    inline =  [
      "sudo sh -c \"echo 'AuthorizedKeysFile %h/.ssh/authorized_keys %h/.ssh/game_keys' >> /etc/ssh/sshd_config\"",
      "touch ~/.ssh/game_keys",
      "sudo chmod 600 ~/.ssh/game_keys",
      "cd ~/bot",
      "sudo docker build -t kumo_dojo_bot .",
      "sudo docker run -itd --restart unless-stopped --name kumo-bot -v ~/.ssh/game_keys:/game_keys --health-cmd=\"ps aux | grep -q kumo_dojo_bot.rb\" --health-interval=10s kumo_dojo_bot",
      "sudo service ssh restart"
    ]
  }
}

output "instance_ips" {
  value = ["${aws_instance.kumo_dojo.*.public_ip}"]
}