All files / koa/libs/plugins autopopulate.js

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3x
3x
3x
 
3x
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3x
3x
 
3x
21x
21x
 
 
21x
 
21x
 
 
 
3x
3x
 
3x
 
21x
3x
3x
 
 
 
18x
 
 
 
 
 
 
 
 
 
 
 
3x
3x
3x
 
 
 
 
 
 
 
 
3x
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3x
 
 
 
 
'use strict'
function handlePrimitive(value, options) {
  if (value) {
    this.populate(options);
  }
}
// function mergeOptions(destination, source) {
//   const keys = Object.keys(source);
//   const numKeys = keys.length;
//   for (let i = 0; i < numKeys; ++i) {
//     destination[keys[i]] = source[keys[i]];
//   }
// }
 
function handleObject(value, optionsToUse) {
  // Special case: support top-level `maxDepth`
  // mergeOptions(optionsToUse, value);
  if (value.maxDepth !== null) {
    optionsToUse.options = optionsToUse.options || {};
    optionsToUse.options.maxDepth = value.maxDepth;
    delete value.maxDepth;
  }
  optionsToUse = Object.assign({}, optionsToUse, value);
  this.populate(optionsToUse);
}
 
/* eslint-disable */
function handleFunction(fn, options) {
  const val = fn.call(this);
  processOption.call(this, val, options);
}
/* eslint-enable */
 
function defaultOptions(pathname, v) {
  const ret = { path: pathname, options: { maxDepth: 10 } };
  Eif (v.ref) {
    ret.model = v.ref;
  }
  return ret
}
 
function processOption(value, options) {
  switch (typeof value) {
    case 'function':
      handleFunction.call(this, value, options);
      break;
    case 'object':
      handleObject.call(this, value, options);
      break;
    default:
      handlePrimitive.call(this, value, options);
      break;
  }
}
 
function eachPathRecursive(schema, handler, path) {
  Eif (!path) {
    path = [];
  }
  schema.eachPath(function (pathname, schemaType) {
    path.push(pathname);
    Iif (schemaType.schema) {
      eachPathRecursive(schemaType.schema, handler, path);
    } else {
      handler(path.join('.'), schemaType);
    }
    path.pop();
  });
}
 
module.exports = function (schema) {
  const pathsToPopulate = [];
 
  eachPathRecursive(schema, function (pathname, schemaType) {
    let option;
    if (schemaType.options && schemaType.options.autopopulate) {
      option = schemaType.options.autopopulate;
      pathsToPopulate.push({
        options: defaultOptions(pathname, schemaType.options),
        autopopulate: option,
      });
    } else Iif (schemaType.options
      && schemaType.options.type
      && schemaType.options.type[0]
      && schemaType.options.type[0].autopopulate) {
      option = schemaType.options.type[0].autopopulate;
      pathsToPopulate.push({
        options: defaultOptions(pathname, schemaType.options.type[0]),
        autopopulate: option,
      });
    }
  });
 
  Eif (schema.virtuals) {
    Object.keys(schema.virtuals).forEach(function (pathname) {
      Iif (schema.virtuals[pathname].options.autopopulate) {
        pathsToPopulate.push({
          options: defaultOptions(pathname, schema.virtuals[pathname].options),
          autopopulate: schema.virtuals[pathname].options.autopopulate,
        });
      }
    });
  }
 
  var autopopulateHandler = function () {
    if (this._mongooseOptions && this._mongooseOptions.lean) {
      return;
    }
 
    const options = this.options || {};
    if (options.autopopulate === false) {
      return;
    }
 
    const depth = options._depth !== null ? options._depth : 0;
    if (options.maxDepth > 0 && depth >= options.maxDepth) {
      return;
    }
 
    const numPaths = pathsToPopulate.length;
    for (let i = 0; i < numPaths; ++i) {
      // processOption.call(this,
      //   pathsToPopulate[i].autopopulate, pathsToPopulate[i].options);
 
      pathsToPopulate[i].options = pathsToPopulate[i].options || {};
      pathsToPopulate[i].options.options = pathsToPopulate[i].options.options || {};
      Object.assign(pathsToPopulate[i].options.options, { _depth: depth + 1 });
      processOption.call(this,
        pathsToPopulate[i].autopopulate, pathsToPopulate[i].options);
    }
  };
 
  schema.
    pre('find', autopopulateHandler).
    pre('findOne', autopopulateHandler);
};