Feat: admin collections filtering (#977)

* collections filtering

* filtering collection tests

* oas for list collections

packages/medusa/src/api/routes/admin/collections/list-collections.ts

@@ -1,10 +1,12 @@
 import { Type } from "class-transformer"
-import { IsNumber, IsOptional } from "class-validator"
+import { IsNumber, IsOptional, IsString, ValidateNested } from "class-validator"
+import _, { identity } from "lodash"
 import {
   defaultAdminCollectionsFields,
   defaultAdminCollectionsRelations,
 } from "."
 import ProductCollectionService from "../../../../services/product-collection"
+import { DateComparisonOperator } from "../../../../types/common"
 import { validator } from "../../../../utils/validator"
 /**
  * @oas [get] /collections
@@ -13,8 +15,13 @@ import { validator } from "../../../../utils/validator"
  * description: "Retrieve a list of Product Collection."
  * x-authenticated: true
  * parameters:
- *   - (path) limit {string} The number of collections to return.
- *   - (path) offset {string} The offset of collections to return.
+ *   - (query) limit {string} The number of collections to return.
+ *   - (query) offset {string} The offset of collections to return.
+ *   - (query) title {string} The title of collections to return.
+ *   - (query) handle {string} The handle of collections to return.
+ *   - (query) deleted_at {DateComparisonOperator} Date comparison for when resulting collections was deleted, i.e. less than, greater than etc.
+ *   - (query) created_at {DateComparisonOperator} Date comparison for when resulting collections was created, i.e. less than, greater than etc.
+ *   - (query) updated_at {DateComparisonOperator} Date comparison for when resulting collections was updated, i.e. less than, greater than etc.
  * tags:
  *   - Collection
  * responses:
@@ -41,8 +48,10 @@ export default async (req, res) => {
     take: validated.limit,
   }
 
+  const filterableFields = _.omit(validated, ["limit", "offset"])
+
   const [collections, count] = await productCollectionService.listAndCount(
-    {},
+    _.pickBy(filterableFields, identity),
     listConfig
   )
 
@@ -54,7 +63,7 @@ export default async (req, res) => {
   })
 }
 
-export class AdminGetCollectionsParams {
+export class AdminGetCollectionsPaginationParams {
   @IsNumber()
   @IsOptional()
   @Type(() => Number)
@@ -65,3 +74,28 @@ export class AdminGetCollectionsParams {
   @Type(() => Number)
   offset = 0
 }
+
+export class AdminGetCollectionsParams extends AdminGetCollectionsPaginationParams {
+  @IsOptional()
+  @IsString()
+  title?: string
+
+  @IsOptional()
+  @IsString()
+  handle?: string
+
+  @IsOptional()
+  @ValidateNested()
+  @Type(() => DateComparisonOperator)
+  created_at?: DateComparisonOperator
+
+  @IsOptional()
+  @ValidateNested()
+  @Type(() => DateComparisonOperator)
+  updated_at?: DateComparisonOperator
+
+  @ValidateNested()
+  @IsOptional()
+  @Type(() => DateComparisonOperator)
+  deleted_at?: DateComparisonOperator
+}