pmatsinopoulos

// SPDX-License-Identifier: MIT
pragma solidity 0.8.22;

// Requirements:
//
// - We want only the creator to create coins.
// - Anyone can send coins to each other without a need for registering with a username and password.
//   All we need is an Ethereum keypair.
// 
contract Coin {

pmatsinopoulos

content_path = Rails.root.join('secret_content_file.txt.enc')

encrypted_file = ActiveSupport::EncryptedFile.new(
  content_path: content_path,
  key_path: Rails.application.config.credentials.key_path,
  env_key: "RAILS_MASTER_KEY",
  raise_if_missing_key: true
)

contents = encrypted_file.read

pmatsinopoulos

content_path = Rails.root.join('secret_content_file.txt')

encrypted_file = ActiveSupport::EncryptedFile.new(
  content_path: "#{content_path}.enc",
  key_path: Rails.application.config.credentials.key_path,
  env_key: "RAILS_MASTER_KEY",
  raise_if_missing_key: true
)

contents = File.read(content_path)

pmatsinopoulos

resource "aws_route_table" "to_nat_gateway" {
  vpc_id = aws_vpc.private_and_public_subnets.id

  tags = {
    "Name" = "access-to-nat-gateway"
  }
}

resource "aws_route" "to_nat_gateway" {
  route_table_id         = aws_route_table.to_nat_gateway.id

pmatsinopoulos

resource "aws_eip" "nat_gateway" {
  depends_on = [aws_internet_gateway.private_and_public_subnets]
}

resource "aws_nat_gateway" "private_and_public_subnets" {
  connectivity_type = "public"
  allocation_id     = aws_eip.nat_gateway.id
  subnet_id         = aws_subnet.subnet_2.id # public subnet

  tags = {

pmatsinopoulos

resource "aws_key_pair" "internal_to_vpc" {
  key_name   = "${local.project}-internal"
  public_key = file("${path.module}/id_rsa_internal.pub")
  tags = {
    "Name" = "${local.project}-internal"
  }
}

pmatsinopoulos

resource "aws_route_table" "to_internet_gateway" {
  vpc_id = aws_vpc.private_and_public_subnets.id

  tags = {
    "Name" = "access-to-internet"
  }
}

resource "aws_route" "to_internet_gateway" {
  route_table_id         = aws_route_table.to_internet_gateway.id

pmatsinopoulos

resource "aws_internet_gateway" "private_and_public_subnets" {
  vpc_id = aws_vpc.private_and_public_subnets.id
  tags = {
    "Name" = "igw"
  }
}

pmatsinopoulos

resource "aws_security_group" "ssh_access" {
  name        = "${local.project}-ssh-access"
  description = "Allow SSH traffic from anywhere"
  vpc_id      = aws_vpc.private_and_public_subnets.id
  ingress {
    description = "allow SSH from anywhere"
    from_port   = 22
    to_port     = 22
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]

pmatsinopoulos

data "aws_ami" "client" {
  most_recent = true

  filter {
    name   = "architecture"
    values = ["x86_64"]
  }

  filter {
    name   = "block-device-mapping.delete-on-termination"