Move mail related settings to new mail route

there is quite a bit of circular dep between settings, platform and
mail code. this will be removed in future commits.

src/routes/mail.js

@@ -1,10 +1,24 @@
 'use strict';
 
 exports = module.exports = {
-    getStatus: getStatus
+    getStatus: getStatus,
+
+    getMailFromValidation: getMailFromValidation,
+    setMailFromValidation: setMailFromValidation,
+
+    getCatchAllAddress: getCatchAllAddress,
+    setCatchAllAddress: setCatchAllAddress,
+
+    getMailRelay: getMailRelay,
+    setMailRelay: setMailRelay,
+
+    getMailConfig: getMailConfig,
+    setMailConfig: setMailConfig,
 };
 
-var mail = require('../mail.js'),
+var assert = require('assert'),
+    mail = require('../mail.js'),
+    MailError = mail.MailError,
     HttpError = require('connect-lastmile').HttpError,
     HttpSuccess = require('connect-lastmile').HttpSuccess;
 
@@ -15,3 +29,95 @@ function getStatus(req, res, next) {
         next(new HttpSuccess(200, records));
     });
 }
+
+function getMailFromValidation(req, res, next) {
+    mail.getMailFromValidation(function (error, enabled) {
+        if (error) return next(new HttpError(500, error));
+
+        next(new HttpSuccess(200, { enabled: enabled }));
+    });
+}
+
+function setMailFromValidation(req, res, next) {
+    assert.strictEqual(typeof req.body, 'object');
+
+    if (typeof req.body.enabled !== 'boolean') return next(new HttpError(400, 'enabled is required'));
+
+    mail.setMailFromValidation(req.body.enabled, function (error) {
+        if (error && error.reason === MailError.BAD_FIELD) return next(new HttpError(400, error.message));
+        if (error) return next(new HttpError(500, error));
+
+        next(new HttpSuccess(202));
+    });
+}
+
+function getCatchAllAddress(req, res, next) {
+    mail.getCatchAllAddress(function (error, address) {
+        if (error) return next(new HttpError(500, error));
+
+        next(new HttpSuccess(200, { address: address }));
+    });
+}
+
+function setCatchAllAddress(req, res, next) {
+    assert.strictEqual(typeof req.body, 'object');
+
+    if (!req.body.address || !Array.isArray(req.body.address)) return next(new HttpError(400, 'address array is required'));
+
+    for (var i = 0; i < req.body.address.length; i++) {
+        if (typeof req.body.address[i] !== 'string') return next(new HttpError(400, 'address must be an array of string'));
+    }
+
+    mail.setCatchAllAddress(req.body.address, function (error) {
+        if (error && error.reason === MailError.BAD_FIELD) return next(new HttpError(400, error.message));
+        if (error) return next(new HttpError(500, error));
+
+        next(new HttpSuccess(202));
+    });
+}
+
+function getMailRelay(req, res, next) {
+    mail.getMailRelay(function (error, mail) {
+        if (error) return next(new HttpError(500, error));
+
+        next(new HttpSuccess(200, mail));
+    });
+}
+
+function setMailRelay(req, res, next) {
+    assert.strictEqual(typeof req.body, 'object');
+
+    if (typeof req.body.provider !== 'string') return next(new HttpError(400, 'provider is required'));
+    if ('host' in req.body && typeof req.body.host !== 'string') return next(new HttpError(400, 'host must be a string'));
+    if ('port' in req.body && typeof req.body.port !== 'number') return next(new HttpError(400, 'port must be a string'));
+    if ('username' in req.body && typeof req.body.username !== 'string') return next(new HttpError(400, 'username must be a string'));
+    if ('password' in req.body && typeof req.body.password !== 'string') return next(new HttpError(400, 'password must be a string'));
+
+    mail.setMailRelay(req.body, function (error) {
+        if (error && error.reason === MailError.BAD_FIELD) return next(new HttpError(400, error.message));
+        if (error) return next(new HttpError(500, error));
+
+        next(new HttpSuccess(202));
+    });
+}
+
+function getMailConfig(req, res, next) {
+    mail.getMailConfig(function (error, mail) {
+        if (error) return next(new HttpError(500, error));
+
+        next(new HttpSuccess(200, mail));
+    });
+}
+
+function setMailConfig(req, res, next) {
+    assert.strictEqual(typeof req.body, 'object');
+
+    if (typeof req.body.enabled !== 'boolean') return next(new HttpError(400, 'enabled is required'));
+
+    mail.setMailConfig({ enabled: req.body.enabled }, function (error) {
+        if (error && error.reason === MailError.BAD_FIELD) return next(new HttpError(400, error.message));
+        if (error) return next(new HttpError(500, error));
+
+        next(new HttpSuccess(202));
+    });
+}