/* manifest.js */

'use strict'

const os = require('os')

const targetRoot = os.homedir()

const unlinks = [{
  src: 'old.conf'
}]

const directories = [{
  src: '.config/envs'
}, {
  src: 'vim',
  dst: '.vim'
}, {
  src: 'private',
  dmode: '0700',
  fmode: '0600',
  user: 'root',
  group: 'wheel'
}]

const files = [{
  src: '.zshrc'
}, {
  src: `keys/${os.hostname()}`,
  dst: '.ssh/id_rsa',
  fmode: '0600',
  pkgs: ['openssh']
}]

const symlinks = [{
  src: '.config/env.conf',
  dst: '.config/envs.${os.hostname()}.conf',
  hosts: ['alpha', 'delta']
}]

module.exports = {targetRoot, unlinks, directories, files, symlinks}

/* manifest.js */

'use strict'

/* Prefix for all source paths
 * except for unlinks and symlinks which use targetRoot below.
 *
 * Use __dirname to refer to the location of this file
 * and process.cwd() for the current working directory.
 *
 * Default: the current working directory.
 */
const originRoot = require('os').homedir()

/* Prefix for all destination paths.
 * For unlinks and symlinks, the source is also prefixed.
 *
 * Use __dirname to refer to the location of this file
 * and process.cwd() for the current working directory.
 *
 * Default: a ./dest folder under the current working directory.
 */
const targetRoot = require('os').homedir()

/* Package lookup backend to use:
 * pacman, dpkg, homebrew, pkgng, or noop.
 *
 * The special value noop will assume all packages are installed.
 *
 * Default: attempt to autodetect, fallback to noop.
 */
const pkgType = 'homebrew'

/* I/O backend to use:
 * linux, macos, or noop.
 *
 * The special value noop will not perform any modifications
 * and only log what actions would be taken.
 *
 * Default: attempt to autodetect, fallback to noop.
 */
const ioType = 'macos'

/* Defaults to use for each operation.
 *
 * Default: shown below.
 */
const defaults = {
  order: 100, // all operations start with this order value
  dmode: '0750', // files have user write, group read, other no access
  fmode: '0640', // directories have user write, group read, other no access
  user: process.getuid(), // current user
  group: process.getgid() // current group
}

/* Operations to perform by type.
 *
 * Operations always happen in this order: unlinks, directories, files, and symlinks.
 *
 * Each type of operations waits until the previous type has completed successfully.
 *
 * Operations of each type with equal order value are always done in parallel,
 * but operations with a later order do not start until earlier ones complete.
 *
 * Specifying an array of hostnames will restrict that
 * operation to matching hosts (case insensitive).
 *
 * Specifying an array of packages will restrict that
 * operation to hosts with all packages installed (case insensitive).
 *
 * All operation types will default to an empty array if unset.
 */

/* Unlink (unconditionally remove) the directory, file, or symlink at src.
 *
 * The src is relative to the global targetRoot option.
 */
const unlinks = [{
  // Remove ~/intruders on all hosts.
  src: 'intruders'
}, {
  // Remove ~/warpcore on host enterprise, if the eject package is installed.
  src: 'warpcore',
  hosts: ['enterprise'],
  pkgs: ['eject']
}]

/* Synchronize the contents of the directory at src to dst
 * and sets the directory and file permissions.
 *
 * The src is relative to the global originRoot option.
 * The dst is relative to the global targetRoot option.
 *
 * NOTE: this WILL remove files in dst that are not in src.
 *
 * If dst is not given, will use src as the subpath.
 */
const directories = [{
  // Synchronize ./holodeck to ~/holodeck on all hosts.
  src: 'holodeck'
}, {
  // Synchronize ./panels/exploding to ~/bridge/panels
  // on hosts enterprise and defiant,
  // if the turbolift and transporter packages are installed,
  // and set specific user, group, and access permissions.
  src: 'panels/exploding',
  dst: 'bridge/panels',
  user: 'numberone',
  group: 'officers',
  dmode: '0755',
  fmode: '0644',
  hosts: ['enterprise', 'defiant'],
  pkgs: ['turbolift', 'transporter']
}, {
  // Install sickbay first, then install the beds and meds.
  src: 'decks/sickbay',
  dst: 'sickbay',
  order: 10
}, {
  src: 'beds',
  dst: 'sickbay/beds',
  order: 11
}, {
  src: 'meds',
  dst: 'sickbay/meds',
  order: 11
}]

/* Copy the file at src to dst
 * and sets the file permissions.
 *
 * The src is relative to the global originRoot option.
 * The dst is relative to the global targetRoot option.
 *
 * NOTE: this WILL replace the file at dst.
 *
 * If dst is not given, will use src as the subpath.
 */
const files = [{
  // Copy ./bay/torpedo to ~/bay/torpedo on all hosts.
  src: 'bay/torpedo'
}, {
  // Copy ./phaser to ~/brig/phaser
  // on host defiant, if the stun package is installed,
  // and set the user, group, and access permissions.
  src: 'phaser',
  dst: 'brig/phaser',
  user: 'warf',
  group: 'security',
  fmode: '0600',
  hosts: ['defiant'],
  pkgs: ['stun']
}]

/* Create a system link (symlink) at src pointing to dst.
 *
 * The src and dst are relative to the global targetRoot option.
 *
 * NOTE: this WILL replace the file at src.
 */
const symlinks = [{
  // Create a symlink from ~/drink to ~/tea/earlgray/hot on all hosts.
  src: 'drink',
  dst: 'tea/earlgray/hot'
}, {
  // Create a symlink from ~/hypospray to ~/hyposprays/norepinephrine
  // on host enterprise if the sickbay package is installed.
  src: 'hypospray',
  dst: 'hyposprays/norepinephrine',
  hosts: ['enterprise'],
  pkgs: ['sickbay']
}]

/* Export each value set above.
 * The export may be a plain object as below, or a function, promise,
 * or async function that returns the plain object.
 * Simply do not export an option to use the default.
 */
module.exports = {
  unlinks,
  directories,
  files,
  symlinks,
  originRoot,
  targetRoot,
  ioType,
  pkgType,
  defaults
}