CREATE TABLE accounts (
  email TEXT PRIMARY KEY NOT NULL,
  created  TIMESTAMP NOT NULL DEFAULT NOW()
);

CREATE TABLE os_images (
  id    TEXT PRIMARY KEY NOT NULL,
  template_image_file_name TEXT NOT NULL,
  description TEXT NOT NULL
);

CREATE TABLE vm_sizes (
  id    TEXT PRIMARY KEY NOT NULL,
  dollars_per_month NUMERIC(8, 2) NOT NULL,
  memory_megabytes INTEGER NOT NULL,
  vcpus INTEGER NOT NULL
);

CREATE TABLE ssh_public_keys (
  id    SERIAL PRIMARY KEY,
  email TEXT REFERENCES accounts(email) ON DELETE RESTRICT,
  name TEXT NOT NULL,
  content TEXT NOT NULL,
  UNIQUE (id, email)
);

CREATE TABLE vms (
  id    TEXT PRIMARY KEY NOT NULL,
  email TEXT REFERENCES accounts(email) ON DELETE RESTRICT,
  os    TEXT REFERENCES os_images(id) ON DELETE RESTRICT,
  size  TEXT REFERENCES vm_sizes(id) ON DELETE RESTRICT,
  created  TIMESTAMP NOT NULL DEFAULT NOW(),
  deleted  TIMESTAMP,
  UNIQUE (id, email)
);

CREATE TABLE vm_ssh_public_key (
  ssh_public_key_id  INTEGER NOT NULL,
  email              TEXT NOT NULL,
  vm_id              TEXT NOT NULL,
  FOREIGN KEY (email, ssh_public_key_id) REFERENCES ssh_public_keys(email, id) ON DELETE RESTRICT,
  FOREIGN KEY (email, vm_id)             REFERENCES vms(email, id) ON DELETE RESTRICT,
  PRIMARY KEY (email, vm_id, ssh_public_key_id)
);

CREATE TABLE payments (
  email      TEXT REFERENCES accounts(email) ON DELETE RESTRICT,
  created    TIMESTAMP NOT NULL DEFAULT NOW(),
  dollars    NUMERIC(8, 2) NOT NULL,
  PRIMARY KEY (email, created)
);

CREATE TABLE login_tokens (
  email      TEXT REFERENCES accounts(email) ON DELETE RESTRICT,
  created    TIMESTAMP NOT NULL DEFAULT NOW(),
  token      TEXT NOT NULL,
  PRIMARY KEY (email, created)
);

INSERT INTO os_images (id, template_image_file_name, description)
VALUES  ('debian10', 'debian-10-genericcloud-amd64-20191117-80.qcow2', 'Debian 10 (Buster)'),
        ('centos7', 'CentOS-7-x86_64-GenericCloud.qcow2', 'CentOS 7'),
        ('centos8', 'CentOS-8-GenericCloud-8.1.1911-20200113.3.x86_64.qcow2', 'CentOS 8'),
        ('ubuntu18', 'ubuntu-18.04-minimal-cloudimg-amd64.img', 'Ubuntu 18.04 LTS (Bionic Beaver)'),
        ('alpine311', 'alpine-cloud-2020-04-18.qcow2', 'Alpine Linux 3.11'),
        ('openbsd66', 'openbsd-cloud-2020-05.qcow2', 'OpenBSD 6.6'),
        ('guix110', 'guixsystem-cloud-2020-05.qcow2', 'Guix System 1.1.0');

INSERT INTO vm_sizes (id, dollars_per_month, memory_megabytes, vcpus)
VALUES  ('f1-s',    5.33,   512, 1),
        ('f1-m',    7.16,  1024, 1),
        ('f1-l',    8.92,  2048, 1),
        ('f1-x',   16.16,  4096, 2),
        ('f1-xx',  29.66,  8192, 4),
        ('f1-xxx', 57.58, 16384, 8);

UPDATE schemaversion SET version = 2;