feat: containedIn function implementation

Author: harshithad0703

src/lib/content-type.ts

@@ -1,6 +1,7 @@
 import { AxiosInstance, getData } from '@contentstack/core';
 import { Entry } from './entry';
 import { Entries } from './entries';
+import { Query } from './query';
 
 interface ContentTypeResponse<T> {
   content_type: T;
@@ -18,6 +19,21 @@ export class ContentType {
     this._urlPath = `/content_types/${this._contentTypeUid}`;
   }
 
+  /**
+   * @method Query
+   * @memberof ContentType
+   * @description queries get all entries that satisfy the condition of the following function
+   * @returns {Query}
+   * @example
+   * import contentstack from '@contentstack/delivery-sdk'
+   *
+   * const stack = contentstack.Stack({ apiKey: "apiKey", deliveryToken: "deliveryToken", environment: "environment" });
+   * const entries = stack.contentType("contentTypeUid").Query().containedIn('fieldUid', ['value1','value2'])
+   */
+  Query(): Query {
+    return new Query(this._client, this._contentTypeUid);
+  };
+
   /**
    * @method entry
    * @memberof ContentType

src/lib/query.ts

@@ -3,7 +3,7 @@ import { BaseQuery } from './base-query';
 import { BaseQueryParameters, QueryOperation, QueryOperator, TaxonomyQueryOperation } from './types';
 export class Query extends BaseQuery {
   private _contentTypeUid?: string;
-
+  override _queryParams: { [key: string]: any}  = {};
   constructor(client: AxiosInstance, uid: string, queryObj?: { [key: string]: any }) {
     super();
     this._client = client;
@@ -164,4 +164,22 @@ export class Query extends BaseQuery {
   getQuery(): { [key: string]: any } {
     return this._parameters;
   }
+
+  /**
+   * @method containedIn
+   * @memberof Query
+   * @description Returns the raw (JSON) query based on the filters applied on Query object.
+   * @example
+   * import contentstack from '@contentstack/delivery-sdk'
+   *
+   * const stack = contentstack.Stack({ apiKey: "apiKey", deliveryToken: "deliveryToken", environment: "environment" });
+   * const query = stack.contentType("contentTypeUid").Query;
+   * const result = containedIn('fieldUid', ['value1', 'value2']).find()
+   * 
+   * @returns {Query}
+   */
+  containedIn(key: string, value: (string | number | boolean)[]): Query {
+    this._queryParams[key] = value;
+    return this;
+  }
 }