From cdfa09cd537f379d0a501e83ea84cf4c56668107 Mon Sep 17 00:00:00 2001
From: Ben Awad <benawad97@gmail.com>
Date: Sun, 16 Aug 2020 11:06:18 -0500
Subject: [PATCH] delete-post

---
 server/src/entities/Updoot.ts                |  4 +-
 server/src/resolvers/post.ts                 | 20 +++++++-
 web/src/components/NavBar.tsx                | 23 ++++++---
 web/src/generated/graphql.tsx                | 21 +++++++-
 web/src/graphql/mutations/deletePost.graphql |  3 ++
 web/src/pages/index.tsx                      | 53 ++++++++++++--------
 web/src/utils/createUrqlClient.ts            |  7 +++
 7 files changed, 97 insertions(+), 34 deletions(-)
 create mode 100644 web/src/graphql/mutations/deletePost.graphql

diff --git a/server/src/entities/Updoot.ts b/server/src/entities/Updoot.ts
index e108dc93..dd23efe8 100644
--- a/server/src/entities/Updoot.ts
+++ b/server/src/entities/Updoot.ts
@@ -23,6 +23,8 @@ export class Updoot extends BaseEntity {
   @PrimaryColumn()
   postId: number;
 
-  @ManyToOne(() => Post, (post) => post.updoots)
+  @ManyToOne(() => Post, (post) => post.updoots, {
+    onDelete: "CASCADE",
+  })
   post: Post;
 }
diff --git a/server/src/resolvers/post.ts b/server/src/resolvers/post.ts
index 1c6f2440..06e725cd 100644
--- a/server/src/resolvers/post.ts
+++ b/server/src/resolvers/post.ts
@@ -203,8 +203,24 @@ export class PostResolver {
   }
 
   @Mutation(() => Boolean)
-  async deletePost(@Arg("id") id: number): Promise<boolean> {
-    await Post.delete(id);
+  @UseMiddleware(isAuth)
+  async deletePost(
+    @Arg("id", () => Int) id: number,
+    @Ctx() { req }: MyContext
+  ): Promise<boolean> {
+    // not cascade way
+    // const post = await Post.findOne(id);
+    // if (!post) {
+    //   return false;
+    // }
+    // if (post.creatorId !== req.session.userId) {
+    //   throw new Error("not authorized");
+    // }
+
+    // await Updoot.delete({ postId: id });
+    // await Post.delete({ id });
+
+    await Post.delete({ id, creatorId: req.session.userId });
     return true;
   }
 }
diff --git a/web/src/components/NavBar.tsx b/web/src/components/NavBar.tsx
index 4b6e36f0..fcf2db4a 100644
--- a/web/src/components/NavBar.tsx
+++ b/web/src/components/NavBar.tsx
@@ -31,7 +31,12 @@ export const NavBar: React.FC<NavBarProps> = ({}) => {
     // user is logged in
   } else {
     body = (
-      <Flex>
+      <Flex align="center">
+        <NextLink href="/create-post">
+          <Button as={Link} mr={4}>
+            create post
+          </Button>
+        </NextLink>
         <Box mr={2}>{data.me.username}</Box>
         <Button
           onClick={() => {
@@ -47,13 +52,15 @@ export const NavBar: React.FC<NavBarProps> = ({}) => {
   }
 
   return (
-    <Flex zIndex={1} position="sticky" top={0} bg="tan" p={4} align="center">
-      <NextLink href="/">
-        <Link>
-          <Heading>LiReddit</Heading>
-        </Link>
-      </NextLink>
-      <Box ml={"auto"}>{body}</Box>
+    <Flex zIndex={1} position="sticky" top={0} bg="tan" p={4}>
+      <Flex flex={1} m="auto" align="center" maxW={800}>
+        <NextLink href="/">
+          <Link>
+            <Heading>LiReddit</Heading>
+          </Link>
+        </NextLink>
+        <Box ml={"auto"}>{body}</Box>
+      </Flex>
     </Flex>
   );
 };
diff --git a/web/src/generated/graphql.tsx b/web/src/generated/graphql.tsx
index 7d94cd0e..47d9ca31 100644
--- a/web/src/generated/graphql.tsx
+++ b/web/src/generated/graphql.tsx
@@ -92,7 +92,7 @@ export type MutationUpdatePostArgs = {
 
 
 export type MutationDeletePostArgs = {
-  id: Scalars['Float'];
+  id: Scalars['Int'];
 };
 
 
@@ -197,6 +197,16 @@ export type CreatePostMutation = (
   ) }
 );
 
+export type DeletePostMutationVariables = Exact<{
+  id: Scalars['Int'];
+}>;
+
+
+export type DeletePostMutation = (
+  { __typename?: 'Mutation' }
+  & Pick<Mutation, 'deletePost'>
+);
+
 export type ForgotPasswordMutationVariables = Exact<{
   email: Scalars['String'];
 }>;
@@ -365,6 +375,15 @@ export const CreatePostDocument = gql`
 export function useCreatePostMutation() {
   return Urql.useMutation<CreatePostMutation, CreatePostMutationVariables>(CreatePostDocument);
 };
+export const DeletePostDocument = gql`
+    mutation DeletePost($id: Int!) {
+  deletePost(id: $id)
+}
+    `;
+
+export function useDeletePostMutation() {
+  return Urql.useMutation<DeletePostMutation, DeletePostMutationVariables>(DeletePostDocument);
+};
 export const ForgotPasswordDocument = gql`
     mutation ForgotPassword($email: String!) {
   forgotPassword(email: $email)
diff --git a/web/src/graphql/mutations/deletePost.graphql b/web/src/graphql/mutations/deletePost.graphql
new file mode 100644
index 00000000..734bb4f4
--- /dev/null
+++ b/web/src/graphql/mutations/deletePost.graphql
@@ -0,0 +1,3 @@
+mutation DeletePost($id: Int!) {
+  deletePost(id: $id)
+}
diff --git a/web/src/pages/index.tsx b/web/src/pages/index.tsx
index d22850b5..744872ff 100644
--- a/web/src/pages/index.tsx
+++ b/web/src/pages/index.tsx
@@ -1,6 +1,6 @@
 import { withUrqlClient } from "next-urql";
 import { createUrqlClient } from "../utils/createUrqlClient";
-import { usePostsQuery } from "../generated/graphql";
+import { usePostsQuery, useDeletePostMutation } from "../generated/graphql";
 import { Layout } from "../components/Layout";
 import {
   Link,
@@ -26,6 +26,7 @@ const Index = () => {
   const [{ data, fetching }] = usePostsQuery({
     variables,
   });
+  const [, deletePost] = useDeletePostMutation();
 
   if (!fetching && !data) {
     return <div>you got query failed for some reason</div>;
@@ -33,31 +34,39 @@ const Index = () => {
 
   return (
     <Layout>
-      <Flex align="center">
-        <Heading>LiReddit</Heading>
-        <NextLink href="/create-post">
-          <Link ml="auto">create post</Link>
-        </NextLink>
-      </Flex>
-      <br />
       {!data && fetching ? (
         <div>loading...</div>
       ) : (
         <Stack spacing={8}>
-          {data!.posts.posts.map((p) => (
-            <Flex key={p.id} p={5} shadow="md" borderWidth="1px">
-              <UpdootSection post={p} />
-              <Box>
-                <NextLink href="/post/[id]" as={`/post/${p.id}`}>
-                  <Link>
-                    <Heading fontSize="xl">{p.title}</Heading>
-                  </Link>
-                </NextLink>
-                <Text>posted by {p.creator.username}</Text>
-                <Text mt={4}>{p.textSnippet}</Text>
-              </Box>
-            </Flex>
-          ))}
+          {data!.posts.posts.map((p) =>
+            !p ? null : (
+              <Flex key={p.id} p={5} shadow="md" borderWidth="1px">
+                <UpdootSection post={p} />
+                <Box flex={1}>
+                  <NextLink href="/post/[id]" as={`/post/${p.id}`}>
+                    <Link>
+                      <Heading fontSize="xl">{p.title}</Heading>
+                    </Link>
+                  </NextLink>
+                  <Text>posted by {p.creator.username}</Text>
+                  <Flex align="center">
+                    <Text flex={1} mt={4}>
+                      {p.textSnippet}
+                    </Text>
+                    <IconButton
+                      ml="auto"
+                      variantColor="red"
+                      icon="delete"
+                      aria-label="Delete Post"
+                      onClick={() => {
+                        deletePost({ id: p.id });
+                      }}
+                    />
+                  </Flex>
+                </Box>
+              </Flex>
+            )
+          )}
         </Stack>
       )}
       {data && data.posts.hasMore ? (
diff --git a/web/src/utils/createUrqlClient.ts b/web/src/utils/createUrqlClient.ts
index d3fb5792..d49eb64e 100644
--- a/web/src/utils/createUrqlClient.ts
+++ b/web/src/utils/createUrqlClient.ts
@@ -13,6 +13,7 @@ import {
   MeQuery,
   RegisterMutation,
   VoteMutationVariables,
+  DeletePostMutationVariables,
 } from "../generated/graphql";
 import { betterUpdateQuery } from "./betterUpdateQuery";
 import Router from "next/router";
@@ -147,6 +148,12 @@ export const createUrqlClient = (ssrExchange: any, ctx: any) => {
         },
         updates: {
           Mutation: {
+            deletePost: (_result, args, cache, info) => {
+              cache.invalidate({
+                __typename: "Post",
+                id: (args as DeletePostMutationVariables).id,
+              });
+            },
             vote: (_result, args, cache, info) => {
               const { postId, value } = args as VoteMutationVariables;
               const data = cache.readFragment(