1var Query = require('./query');
 2function NamedScope () {}
 3
 4NamedScope.prototype.query;
 5
 6NamedScope.prototype.where = function () {
 7  var q = this.query || (this.query = new Query());
 8  q.where.apply(q, arguments);
 9  return q;
10};
11
12/**
13 * Decorate
14 *
15 * @param {NamedScope} target
16 * @param {Object} getters
17 * @api private
18 */
19
20NamedScope.prototype.decorate = function (target, getters) {
21  var name = this.name
22    , block = this.block
23    , query = this.query;
24  if (block) {
25    if (block.length === 0) {
26      Object.defineProperty(target, name, {
27        get: getters.block0(block)
28      });
29    } else {
30      target[name] = getters.blockN(block);
31    }
32  } else {
33    Object.defineProperty(target, name, {
34      get: getters.basic(query)
35    });
36  }
37};
38
39NamedScope.prototype.compile = function (model) {
40  var allScopes = this.scopesByName
41    , scope;
42  for (var k in allScopes) {
43    scope = allScopes[k];
44    scope.decorate(model, {
45      block0: function (block) {
46        return function () {
47          var cquery = this._cumulativeQuery || (this._cumulativeQuery = new Query().bind(this));
48          block.call(cquery);
49          return this;
50        };
51      },
52      blockN: function (block) {
53        return function () {
54          var cquery = this._cumulativeQuery || (this._cumulativeQuery = new Query().bind(this));
55          block.apply(cquery, arguments);
56          return this;
57        };
58      },
59      basic: function (query) {
60        return function () {
61          var cquery = this._cumulativeQuery || (this._cumulativeQuery = new Query().bind(this));
62          cquery.find(query);
63          return this;
64        };
65      }
66    });
67  }
68};
69
70module.exports = NamedScope;