add getSiteStore

lib/apis.js

@@ -75,6 +75,37 @@ module.exports.create = function (xconfx, apiFactories, apiDeps) {
     });
   }
 
+  var modelsCache = {};
+  function getSiteStore(clientUrih, pkgId, dir) {
+    if (modelsCache[clientUrih]) {
+      return modelsCache[clientUrih];
+    }
+
+    // DB scopes:
+    // system (global)
+    // experience (per domain)
+    // api (per api)
+    // account (per user account)
+    // client (per 3rd party client)
+
+    // scope Experience to db
+    // scope Api by table
+    // scope Account and Client by column
+    modelsCache[clientUrih] = apiFactories.systemSqlFactory.create({
+      init: true
+    , dbname: clientUrih // '#' is a valid file name character
+    }).then(function (db) {
+      var wrap = require('masterquest-sqlite3');
+
+      return wrap.wrap(db, dir).then(function (models) {
+        modelsCache[clientUrih] = PromiseA.resolve(models);
+        return models;
+      });
+    });
+
+    return modelsCache[clientUrih];
+  }
+
   function loadRestHelper(myConf, clientUrih, pkgId) {
     var pkgPath = path.join(myConf.restPath, pkgId);
 
@@ -183,6 +214,26 @@ module.exports.create = function (xconfx, apiFactories, apiDeps) {
             }
           });
 
+          Object.defineProperty(req, 'getSiteStore', {
+            enumerable: true
+          , configurable: false
+          , writable: false
+          , value: function getSiteStoreProp() {
+              var restPath = path.join(myConf.restPath, pkgId);
+              var apiPath = path.join(myConf.apiPath, pkgId);
+              var dir;
+
+              // TODO usage package.json as a falback if the standard location is not used
+              try {
+                dir = require(path.join(apiPath, 'models.js'));
+              } catch(e) {
+                dir = require(path.join(restPath, 'models.js'));
+              }
+
+              return getSiteStore(clientUrih, pkgId, dir);
+            }
+          });
+
           req._walnutOriginalUrl = req.url;
           // "/path/api/com.example/hello".replace(/.*\/api\//, '').replace(/([^\/]*\/+)/, '/') => '/hello'
           req.url = req.url.replace(/\/api\//, '').replace(/.*\/api\//, '').replace(/([^\/]*\/+)/, '/');