feat(kitsu): support the bulk extension specification

Maps array of IDs for DELETE. POST and PATCH work out of the box with the changes in kitsu-core. Closes #336

Author: wopian

packages/kitsu/src/delete.spec.js

@@ -64,6 +64,24 @@ describe('kitsu', () => {
       done()
     })
 
+    it('deletes multiple resources (bulk extension)', async done => {
+      expect.assertions(1)
+      const api = new Kitsu({ headers: { Authorization: true } })
+      mock.onDelete('/posts').reply(config => {
+        expect(JSON.parse(config.data)).toEqual({
+          data: [
+            { id: '1', type: 'posts' },
+            { id: '2', type: 'posts' }
+          ]
+        })
+        return [ 200 ]
+      })
+      api.delete('post', [ 1, 2 ]).catch(err => {
+        done.fail(err)
+      })
+      done()
+    })
+
     it('throws an error if ID is missing', async () => {
       expect.assertions(1)
       const api = new Kitsu()

packages/kitsu/src/index.js

@@ -285,7 +285,7 @@ export default class Kitsu {
    *
    * @memberof Kitsu
    * @param {string} model Model to remove data from
-   * @param {string|number} id Resource ID to remove
+   * @param {string|number|Array} id Resource ID to remove. Pass an array of IDs to delete multiple resources (Bulk Extension)
    * @param {Object} headers Additional headers to send with request
    * @returns {Object} JSON-parsed response
    * @example <caption>Remove a user's post</caption>
@@ -297,8 +297,19 @@ export default class Kitsu {
         resourceCase: this.resCase,
         pluralModel: this.plural
       })
-      const { data } = await this.axios.delete(`${url}/${id}`, {
-        data: serialise(resourceModel, { id }, 'DELETE', {
+      const isBulk = Array.isArray(id)
+      let path, payload
+
+      if (isBulk) {
+        path = url
+        payload = id.map(id => ({ id }))
+      } else {
+        path = `${url}/${id}`
+        payload = { id }
+      }
+
+      const { data } = await this.axios.delete(path, {
+        data: serialise(resourceModel, payload, 'DELETE', {
           camelCaseTypes: this.camel,
           pluralTypes: this.plural
         }),