From 2939a822087809d15400d3f709cea0ada44b7467 Mon Sep 17 00:00:00 2001
From: Ben Awad <benawad97@gmail.com>
Date: Sun, 16 Aug 2020 14:43:26 -0500
Subject: [PATCH] cache-reset

---
 web/src/components/NavBar.tsx     |  7 ++-
 web/src/utils/createUrqlClient.ts | 71 +++++--------------------------
 2 files changed, 16 insertions(+), 62 deletions(-)

diff --git a/web/src/components/NavBar.tsx b/web/src/components/NavBar.tsx
index fcf2db4a..59df4571 100644
--- a/web/src/components/NavBar.tsx
+++ b/web/src/components/NavBar.tsx
@@ -3,10 +3,12 @@ import { Box, Link, Flex, Button, Heading } from "@chakra-ui/core";
 import NextLink from "next/link";
 import { useMeQuery, useLogoutMutation } from "../generated/graphql";
 import { isServer } from "../utils/isServer";
+import { useRouter } from "next/router";
 
 interface NavBarProps {}
 
 export const NavBar: React.FC<NavBarProps> = ({}) => {
+  const router = useRouter();
   const [{ fetching: logoutFetching }, logout] = useLogoutMutation();
   const [{ data, fetching }] = useMeQuery({
     pause: isServer(),
@@ -39,8 +41,9 @@ export const NavBar: React.FC<NavBarProps> = ({}) => {
         </NextLink>
         <Box mr={2}>{data.me.username}</Box>
         <Button
-          onClick={() => {
-            logout();
+          onClick={async () => {
+            await logout();
+            router.reload();
           }}
           isLoading={logoutFetching}
           variant="link"
diff --git a/web/src/utils/createUrqlClient.ts b/web/src/utils/createUrqlClient.ts
index b501403e..9ee40e1d 100644
--- a/web/src/utils/createUrqlClient.ts
+++ b/web/src/utils/createUrqlClient.ts
@@ -1,4 +1,4 @@
-import { cacheExchange, Resolver } from "@urql/exchange-graphcache";
+import { cacheExchange, Resolver, Cache } from "@urql/exchange-graphcache";
 import {
   dedupExchange,
   Exchange,
@@ -64,61 +64,17 @@ const cursorPagination = (): Resolver => {
       hasMore,
       posts: results,
     };
-
-    // const visited = new Set();
-    // let result: NullArray<string> = [];
-    // let prevOffset: number | null = null;
-
-    // for (let i = 0; i < size; i++) {
-    //   const { fieldKey, arguments: args } = fieldInfos[i];
-    //   if (args === null || !compareArgs(fieldArgs, args)) {
-    //     continue;
-    //   }
-
-    //   const links = cache.resolveFieldByKey(entityKey, fieldKey) as string[];
-    //   const currentOffset = args[cursorArgument];
-
-    //   if (
-    //     links === null ||
-    //     links.length === 0 ||
-    //     typeof currentOffset !== "number"
-    //   ) {
-    //     continue;
-    //   }
-
-    //   if (!prevOffset || currentOffset > prevOffset) {
-    //     for (let j = 0; j < links.length; j++) {
-    //       const link = links[j];
-    //       if (visited.has(link)) continue;
-    //       result.push(link);
-    //       visited.add(link);
-    //     }
-    //   } else {
-    //     const tempResult: NullArray<string> = [];
-    //     for (let j = 0; j < links.length; j++) {
-    //       const link = links[j];
-    //       if (visited.has(link)) continue;
-    //       tempResult.push(link);
-    //       visited.add(link);
-    //     }
-    //     result = [...tempResult, ...result];
-    //   }
-
-    //   prevOffset = currentOffset;
-    // }
-
-    // const hasCurrentPage = cache.resolve(entityKey, fieldName, fieldArgs);
-    // if (hasCurrentPage) {
-    //   return result;
-    // } else if (!(info as any).store.schema) {
-    //   return undefined;
-    // } else {
-    //   info.partial = true;
-    //   return result;
-    // }
   };
 };
 
+function invalidateAllPosts(cache: Cache) {
+  const allFields = cache.inspectFields("Query");
+  const fieldInfos = allFields.filter((info) => info.fieldName === "posts");
+  fieldInfos.forEach((fi) => {
+    cache.invalidate("Query", "posts", fi.arguments || {});
+  });
+}
+
 export const createUrqlClient = (ssrExchange: any, ctx: any) => {
   let cookie = "";
   if (isServer()) {
@@ -185,13 +141,7 @@ export const createUrqlClient = (ssrExchange: any, ctx: any) => {
               }
             },
             createPost: (_result, args, cache, info) => {
-              const allFields = cache.inspectFields("Query");
-              const fieldInfos = allFields.filter(
-                (info) => info.fieldName === "posts"
-              );
-              fieldInfos.forEach((fi) => {
-                cache.invalidate("Query", "posts", fi.arguments || {});
-              });
+              invalidateAllPosts(cache);
             },
             logout: (_result, args, cache, info) => {
               betterUpdateQuery<LogoutMutation, MeQuery>(
@@ -216,6 +166,7 @@ export const createUrqlClient = (ssrExchange: any, ctx: any) => {
                   }
                 }
               );
+              invalidateAllPosts(cache);
             },
             register: (_result, args, cache, info) => {
               betterUpdateQuery<RegisterMutation, MeQuery>(