update ssu command to allow plugin configuration

bin/ssu

@@ -8,6 +8,7 @@ var Promise = require('es6-promise')
 var pgp = require('pg-promise')({
   promiseLib: Promise
 })
+var inquirer = require('inquirer')
 
 var fs = require('fs')
 
@@ -21,6 +22,8 @@ function bail () {
   console.log('This will remotely reboot your lamassu-machine.')
   console.log('\nssu crypto <code> <ticker-plugin> <wallet-plugin> [<trader-plugin>]')
   console.log('This will configure a new cryptocurrency.')
+  console.log('\nssu config <plugin> <key>')
+  console.log('Configure a plugin setting.')
   process.exit(1)
 }
 
@@ -31,6 +34,9 @@ switch (cmd) {
   case 'crypto':
     crypto()
     break
+  case 'config':
+    configure()
+    break
   default:
 
 }
@@ -153,3 +159,51 @@ function crypto () {
     pgp.end()
   })
 }
+
+function configure () {
+  var plugin = argv[1]
+  var key = argv[2]
+
+  if (!plugin || !key) {
+    console.log('\nssu config <plugin> <key>')
+    console.log('Configure a plugin setting.')
+    process.exit(1)
+  }
+
+  inquirer.prompt([{
+    type: 'password',
+    name: 'value',
+    message: 'Enter value for ' + key + ': ',
+    validate: function (val) {
+      return !val || val.length === 0
+      ? 'Please enter a value for ' + key
+      : true
+    }
+  }]).then(function (result) {
+    var value = result.value
+
+    var psqlUrl
+    try {
+      psqlUrl = process.env.DATABASE_URL || JSON.parse(fs.readFileSync('/etc/lamassu.json')).postgresql
+    } catch (ex) {
+      psqlUrl = 'psql://lamassu:lamassu@localhost/lamassu'
+    }
+    var db = pgp(psqlUrl)
+
+    return db.one('select data from user_config where type=$1', 'exchanges')
+    .then(function (data) {
+      var config = data.data
+      config.exchanges.plugins.settings[plugin] = config.exchanges.plugins.settings[plugin] || {}
+      config.exchanges.plugins.settings[plugin][key] = value
+      return db.none('update user_config set data=$1 where type=$2', [config, 'exchanges'])
+    })
+    .then(function () {
+      console.log('success')
+      pgp.end()
+    })
+    .catch(function (err) {
+      console.log(err.stack)
+      pgp.end()
+    })
+  })
+}

package.json

@@ -16,7 +16,7 @@
     "es6-promise": "^3.1.2",
     "ethereumjs-wallet": "^0.5.1",
     "express": "~3.4.7",
-    "inquirer": "^0.8.0",
+    "inquirer": "^1.0.0",
     "joi": "^5.1.0",
     "lamassu-bitcoinaverage": "~1.0.0",
     "lamassu-bitcoind": "^1.1.0",
@@ -37,6 +37,8 @@
     "node-uuid": "^1.4.2",
     "pg": "^4.5.1",
     "pg-promise": "^3.4.3",
+    "prompt": "^1.0.0",
+    "promptly": "^1.1.0",
     "web3": "^0.15.3",
     "wreck": "5.1.0"
   },