Remove unused QueryBuilderService (#2104)

**Issue number:** #2068 

**What:**
- removed unused query-builder service files
  - medusa/src/services/query-builder.js
  - medusa/src/services/__mocks__/query-builder.js
- deleted export from medusa/src/services/index.ts
- (extra) deleted documentation files related to QueryBuilderService (QueryBuilderService.md)

docs/content/references/services/classes/QueryBuilderService.md

@@ -1,79 +0,0 @@
-# Class: QueryBuilderService
-
-## Hierarchy
-
-- `"medusa-interfaces"`
-
-  ↳ **`QueryBuilderService`**
-
-## Constructors
-
-### constructor
-
-• **new QueryBuilderService**()
-
-#### Inherited from
-
-BaseService.constructor
-
-## Methods
-
-### buildFilterQuery
-
-▸ **buildFilterQuery**(`filters`): `undefined` \| {}
-
-#### Parameters
-
-| Name | Type |
-| :------ | :------ |
-| `filters` | `any` |
-
-#### Returns
-
-`undefined` \| {}
-
-#### Defined in
-
-[packages/medusa/src/services/query-builder.js:25](https://github.com/medusajs/medusa/blob/f7a63f178/packages/medusa/src/services/query-builder.js#L25)
-
-___
-
-### buildQuery
-
-▸ **buildQuery**(`params`, `properties`): `Object`
-
-#### Parameters
-
-| Name | Type |
-| :------ | :------ |
-| `params` | `any` |
-| `properties` | `any` |
-
-#### Returns
-
-`Object`
-
-#### Defined in
-
-[packages/medusa/src/services/query-builder.js:5](https://github.com/medusajs/medusa/blob/f7a63f178/packages/medusa/src/services/query-builder.js#L5)
-
-___
-
-### buildTextSearchQuery
-
-▸ **buildTextSearchQuery**(`search`, `searchProperties`): `undefined` \| { `$or`: `any` = searchQuery }
-
-#### Parameters
-
-| Name | Type |
-| :------ | :------ |
-| `search` | `any` |
-| `searchProperties` | `any` |
-
-#### Returns
-
-`undefined` \| { `$or`: `any` = searchQuery }
-
-#### Defined in
-
-[packages/medusa/src/services/query-builder.js:39](https://github.com/medusajs/medusa/blob/f7a63f178/packages/medusa/src/services/query-builder.js#L39)

docs/content/references/services/index.md

@@ -30,7 +30,6 @@
 - [ProductService](classes/ProductService.md)
 - [ProductTypeService](classes/ProductTypeService.md)
 - [ProductVariantService](classes/ProductVariantService.md)
-- [QueryBuilderService](classes/QueryBuilderService.md)
 - [RegionService](classes/RegionService.md)
 - [ReturnReasonService](classes/ReturnReasonService.md)
 - [ReturnService](classes/ReturnService.md)

packages/medusa/src/services/__mocks__/query-builder.js

@@ -1,11 +0,0 @@
-export const QueryBuilderServiceMock = {
-  buildQuery: jest.fn().mockImplementation(data => {
-    return Promise.resolve()
-  }),
-}
-
-const mock = jest.fn().mockImplementation(() => {
-  return QueryBuilderServiceMock
-})
-
-export default mock

packages/medusa/src/services/index.ts

@@ -27,7 +27,6 @@ export { default as ProductCollectionService } from "./product-collection"
 export { default as ProductService } from "./product"
 export { default as ProductTypeService } from "./product-type"
 export { default as ProductVariantService } from "./product-variant"
-export { default as QueryBuilderService } from "./query-builder"
 export { default as RegionService } from "./region"
 export { default as ReturnReasonService } from "./return-reason"
 export { default as ReturnService } from "./return"

packages/medusa/src/services/query-builder.js

@@ -1,52 +0,0 @@
-import { BaseService } from "medusa-interfaces"
-import _ from "lodash"
-
-class QueryBuilderService extends BaseService {
-  buildQuery(params, properties) {
-    const textSearch = _.pick(params, ["q"])
-    const filters = _.pick(params, properties)
-
-    const textQuery = this.buildTextSearchQuery(textSearch, properties)
-    const filterQuery = this.buildFilterQuery(filters)
-
-    if (textQuery && filterQuery) {
-      return {
-        $and: [textQuery, filterQuery],
-      }
-    } else if (!textQuery && filterQuery) {
-      return filterQuery
-    } else if (textQuery && !filterQuery) {
-      return textQuery
-    } else {
-      return {}
-    }
-  }
-
-  buildFilterQuery(filters) {
-    if (_.isEmpty(filters)) {
-      return
-    }
-
-    const filterQuery = {}
-
-    Object.keys(filters).map((filter) => {
-      filterQuery[filter] = filters[filter]
-    })
-
-    return filterQuery
-  }
-
-  buildTextSearchQuery(search, searchProperties) {
-    if (_.isEmpty(search)) {
-      return
-    }
-
-    const searchQuery = searchProperties.map((s) => ({
-      [s]: new RegExp(search.q, "i"),
-    }))
-
-    return { $or: searchQuery }
-  }
-}
-
-export default QueryBuilderService