feat(facets): add functions for the rest of the OFF facets

main.js

@@ -124,6 +124,160 @@ class OFF {
       .then(JSON.parse)
   }
 
+  /**
+  * It is used to get all allergens from the API
+  * @return {Object} It returns a JSON with all allergens present in the API
+  * @example
+  * const worldOFF = new OFF()
+  * worldOFF.getAllergens().then(allergens =>{
+  *    //use allergens
+  * })
+  */
+  getAllergens () {
+    return request(`${this.URL}/allergens.json`)
+    .then(JSON.parse)
+  }
+
+  /**
+  * It is used to get all categories from the API
+  * @return {Object} It returns a JSON with all categories present in the API
+  * @example
+  * const worldOFF = new OFF()
+  * worldOFF.getCategories().then(categories =>{
+  *    //use categories
+  * })
+  */
+  getCategories () {
+    return request(`${this.URL}/categories.json`)
+    .then(JSON.parse)
+  }
+
+  /**
+  * It is used to get all countries from the API
+  * @return {Object} It returns a JSON with all categories present in the API
+  * @example
+  * const worldOFF = new OFF()
+  * worldOFF.getCountries().then(countries =>{
+  *    //use countries
+  * })
+  */
+  getCountries () {
+    return request(`${this.URL}/countries.json`)
+    .then(JSON.parse)
+  }
+
+  /**
+  * It is used to get all entry dates from the API
+  * @return {Object} It returns a JSON with all entry dates present in the API
+  * @example
+  * const worldOFF = new OFF()
+  * worldOFF.getEntryDates().then(entry_dates =>{
+  *    //use entry_dates
+  * })
+  */
+  getEntryDates () {
+    return request(`${this.URL}/entry-dates.json`)
+    .then(JSON.parse)
+  }
+
+  /**
+  * It is used to get all ingredients from the API
+  * @return {Object} It returns a JSON with all ingredients present in the API
+  * @example
+  * const worldOFF = new OFF()
+  * worldOFF.getIngredients().then(ingredients =>{
+  *    //use ingredients
+  * })
+  */
+  getIngredients () {
+    return request(`${this.URL}/ingredients.json`)
+    .then(JSON.parse)
+  }
+
+  /**
+  * It is used to get all packagings from the API
+  * @return {Object} It returns a JSON with all packagings present in the API
+  * @example
+  * const worldOFF = new OFF()
+  * worldOFF.getPackagings().then(packagings =>{
+  *    //use packagings
+  * })
+  */
+  getPackagings () {
+    return request(`${this.URL}/packaging.json`)
+    .then(JSON.parse)
+  }
+
+  /**
+  * It is used to get packaging codes from the API
+  * @return {Object} It returns a JSON with all packaging codes present in the API
+  * @example
+  * const worldOFF = new OFF()
+  * worldOFF.getPackagingCodes().then(packaging_codes =>{
+  *    //use packaging_codes
+  * })
+  */
+  getPacakgingCodes () {
+    return request(`${this.URL}/packager-codes.json`)
+    .then(JSON.parse)
+  }
+
+  /**
+  * It is used to get all purchase places from the API
+  * @return {Object} It returns a JSON with all purchase places present in the API
+  * @example
+  * const worldOFF = new OFF()
+  * worldOFF.getPurchasePlaces().then(purchase_places =>{
+  *    //use purchase_places
+  * })
+  */
+  getPurchasePlaces () {
+    return request(`${this.URL}/purchase-places.json`)
+    .then(JSON.parse)
+  }
+
+  /**
+  * It is used to get all states from the API
+  * @return {Object} It returns a JSON with all states present in the API
+  * @example
+  * const worldOFF = new OFF()
+  * worldOFF.getStates().then(states =>{
+  *    //use states
+  * })
+  */
+  getStates () {
+    return request(`${this.URL}/states.json`)
+    .then(JSON.parse)
+  }
+
+    /**
+  * It is used to get all stores from the API
+  * @return {Object} It returns a JSON with all stores present in the API
+  * @example
+  * const worldOFF = new OFF()
+  * worldOFF.getStores().then(stores =>{
+  *    //use stores
+  * })
+  */
+  getStores () {
+    return request(`${this.URL}/stores.json`)
+    .then(JSON.parse)
+  }
+
+  /**
+  * It is used to get all trace types from the API
+  * @return {Object} It returns a JSON with all traces present in the API
+  * @example
+  * const worldOFF = new OFF()
+  * worldOFF.getTraces().then(traces =>{
+  *    //use traces
+  * })
+  */
+  getTraces () {
+    return request(`${this.URL}/traces.json`)
+    .then(JSON.parse)
+  }
+
   /**
    * It is used to get all products beginning with the given barcode string
    * @param {string} beginning - Barcode string from which if the barcode begins, then product is to be fetched