From c4cc61992805469f86ecd4d74afc18cf6506155b Mon Sep 17 00:00:00 2001
From: AJ ONeal <aj@daplie.com>
Date: Fri, 28 Apr 2017 18:40:37 -0600
Subject: [PATCH] begin cli parser

---
 bin/cli.js | 144 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 144 insertions(+)
 create mode 100644 bin/cli.js

diff --git a/bin/cli.js b/bin/cli.js
new file mode 100644
index 0000000..da3be23
--- /dev/null
+++ b/bin/cli.js
@@ -0,0 +1,144 @@
+'use strict';
+
+var oauth3 = require('./oauth3.js');
+var defaults = {
+  main: 'oauth3'
+, provider: 'oauth3.org'
+};
+
+function parseArgs(argv, opts) {
+  var args = Array.prototype.slice.call(argv);
+  var sep = /[:\.\-]/;
+
+  args.shift(); // node
+  args.shift(); // oauth3.js
+
+  var command = args.shift() || 'help';
+  var cmdpair = command.split(sep);
+  var cmd = cmdpair[0];
+  var sub = cmdpair[1];
+  var COMMAND = 'COMMAND';
+  var maxCmdLen = COMMAND.length;
+  var maxPairLen = 0;
+  var cmds;
+  var arg1 = args[0];
+
+  // build commands list
+  var pairsMap = {};
+  cmds = opts.commands.filter(function (desc) {
+    var pair = desc[0].split(/\s+/)[0];
+    var psub = pair.split(sep)[0];
+    pairsMap[pair] = true;
+    maxPairLen = Math.max(maxPairLen, pair.length);
+    if (pair === psub) {
+      maxCmdLen = Math.max(maxCmdLen, psub.length);
+      return true;
+    }
+  });
+
+  if (-1 === Object.keys(pairsMap).indexOf(cmd)) {
+    console.log('fail', cmd);
+    arg1 = cmd;
+    cmd = 'help';
+    help();
+  }
+
+  function rpad(str, len) {
+    while (str.length < len) {
+      str += ' ';
+    }
+    return str;
+  }
+
+  function help() {
+    var status = 0;
+
+    function helpMain() {
+      console.log('');
+      console.log('Here are all the top-level commands:');
+      console.log('');
+
+      console.log('\t' + defaults.main + ' ' + rpad(COMMAND, maxCmdLen), ' # description');
+      console.log('\t' + '------------------------------');
+      cmds.forEach(function (desc) {
+        var pcmd = rpad(desc[0].split(/\s+/)[0], maxCmdLen);
+        var pdesc = desc[1];
+        console.log('\t' + defaults.main + ' ' + pcmd, ' # ' + pdesc);
+      });
+      console.log('');
+    }
+
+    if (arg1 && -1 === Object.keys(pairsMap).indexOf(arg1)) {
+      status = 1;
+      console.log('');
+      console.log(defaults.main + ": Unknown command '" + arg1 + "'");
+      arg1 = null;
+    }
+    if (!arg1 || '-' === arg1[0]) {
+      helpMain();
+      process.exit(status);
+    }
+    if ('help' === arg1) {
+      helpMain();
+      console.log("no more help available for 'help'");
+      process.exit(status);
+    }
+  }
+
+  if (-1 !== [ 'help', '-h', '--help' ].indexOf(command) || -1 !== args.indexOf('-h') || -1 !== args.indexOf('--help')) {
+    help();
+    return;
+  }
+}
+
+parseArgs(process.argv, {
+  // CLI goals:
+  //
+  // whoami / login: you are now logged in as
+  //   * john@example.com [current] (just now)
+  //   * john@work.net (2 minutes ago)
+  //   * john@family.me (2 weeks ago)
+  commands: [
+    [ 'login [email or cloud address]', 'alias of session:attach', [
+        "--auto, create a new account without asking if none exists"
+      //, "--exclusive, logout all other ids, removing access to their accounts"
+      , "--provider, specify an authentication provider (default: :provider)".replace(/\b:provider\b/, defaults.provider)
+      //, "--email [addr], use the given id as an email address, even if it works as a cloud address"
+      //, "--cloud [addr], use the given id as a cloud address or fail (don't fallback to email)"
+      ]
+    ]
+  , [ 'logout', 'alias of session:detach' ]
+  , [ 'whoami', 'show current account(s) and login(s) and device(s)' ]
+
+    // authn
+  , [ 'session', 'Manage your ids (credentials / logins)' ]
+  , [ 'session:new', 'alias of `login --exclusive`' ]
+  , [ 'session:attach', 'Create a session (and account if needed) for a given email address or cloud address' ]
+  , [ 'session:detach', 'remove login from session' ]
+  , [ 'session:list', 'show all of the ids in the current session' ]
+
+    // authz
+  , [ 'accounts', 'Manage your accounts (authorization / profiles)' ]
+  , [ 'accounts:new', 'create a new account attached to the credentials of the current session' ]
+  , [ 'accounts:set', 'change account details' ] // todo changing the name should be restricted john@provider.net -> jonathan@provider.net would be bad
+  , [ 'accounts:list', 'show all of the accounts in the current session' ]
+  , [ 'accounts:attach', 'attach an account to an id' ]
+  , [ 'accounts:detach', 'detach an account from an id' ]
+  , [ 'accounts:select', 'select an account to use as the primary account for this session' ]
+  , [ 'accounts:update', '(deprecated) alias of set' ]
+  , [ 'accounts:login', '(deprecated) alias of login' ]
+  , [ 'accounts:whoami', '(deprecated) alias of whoami' ]
+
+    // authn / authz
+  , [ 'devices', 'manages devices for your account(s)' ]
+  , [ 'devices:new', 'create a new device (default name is hostname, default ip is the result of :provider/api/org.oauth3.tunnel/checkip)'.replace(/\b:provider\b/, defaults.provider) ]
+  , [ 'devices:set', 'set the ip address of the device (defaults ip is the result of :provider/api/org.oauth3.tunnel/checkip)'.replace(/\b:provider\b/, defaults.provider) ]
+  , [ 'devices:attach', "attach a device to a domain's DNS record" ]
+  , [ 'devices:detach', "detach an account from a domain's DNS record" ]
+  , [ 'devices:select', '(re)claim the specified device as this device (i.e. you re-installed your OS or deleted your ~/.oauth3)' ]
+  , [ 'devices:list', 'show all devices for your account(s)' ]
+
+    // help
+  , [ 'help', "show this menu; use '" + defaults.main + " help COMMAND' (even 'help') for options and sub-commands" ]
+  ]
+});