Split snippet controllers into separate files

src/controllers/snippets/deleteSnippet.ts

@@ -0,0 +1,50 @@
+import { Response, NextFunction } from 'express';
+import { asyncWrapper } from '../../middleware';
+import { SnippetModel, Snippet_TagModel } from '../../models';
+import { Snippet, UserInfoRequest } from '../../typescript/interfaces';
+import { tagParser, createTags, ErrorResponse } from '../../utils';
+
+interface Params {
+  id: number;
+}
+
+/**
+ * @description Delete snippet
+ * @route /api/snippets/:id
+ * @request DELETE
+ * @access Private
+ */
+export const deleteSnippet = asyncWrapper(
+  async (
+    req: UserInfoRequest<{}, Params>,
+    res: Response,
+    next: NextFunction
+  ): Promise<void> => {
+    const snippet = await SnippetModel.findOne({
+      where: { id: req.params.id }
+    });
+
+    if (!snippet) {
+      return next(
+        new ErrorResponse(
+          404,
+          `Snippet with the id of ${req.params.id} was not found`
+        )
+      );
+    }
+
+    if (snippet.createdBy != req.user.id && !req.user.isAdmin) {
+      return next(
+        new ErrorResponse(401, `You are not authorized to modify this resource`)
+      );
+    }
+
+    // Delete all snippet <> tag relations
+    await Snippet_TagModel.destroy({ where: { snippet_id: req.params.id } });
+    await snippet.destroy();
+
+    res.status(200).json({
+      data: {}
+    });
+  }
+);