feat: loads of improvements (see comments)

1) check whether submitting user is submitting for himself
2) some refactoring of the tabs in `Ranking`
3) get chemistry and mvps from DB
4) restore previous
5) start over
6) (hopefully) improve logout

src/Rankings.tsx

@@ -1,7 +1,8 @@
-import { useEffect, useRef, useState } from "react";
+import { ButtonHTMLAttributes, useEffect, useRef, useState } from "react";
 import { ReactSortable, ReactSortableProps } from "react-sortablejs";
 import { apiAuth, User } from "./api";
 import { useSession } from "./Session";
+import { Chemistry, MVPRanking } from "./types";
 
 type PlayerListProps = Partial<ReactSortableProps<any>> & {
   orderedList?: boolean;
@@ -21,15 +22,37 @@ function PlayerList(props: PlayerListProps) {
   );
 }
 
+const LoadButton = (props: ButtonHTMLAttributes<HTMLButtonElement>) => {
+  return (
+    <button {...props} style={{ padding: "4px 16px" }}>
+      🗃️ restore previous
+    </button>
+  );
+};
+
+const ClearButton = (props: ButtonHTMLAttributes<HTMLButtonElement>) => {
+  return (
+    <button {...props} style={{ padding: "4px 16px" }}>
+      🗑️ start over
+    </button>
+  );
+};
+
+function filterSort(list: User[], ids: number[]): User[] {
+  const objectMap = new Map(list.map((obj) => [obj.id, obj]));
+  const filteredAndSortedObjects = ids
+    .map((id) => objectMap.get(id))
+    .filter((obj) => obj !== undefined);
+  return filteredAndSortedObjects;
+}
+
 interface PlayerInfoProps {
   user: User;
   players: User[];
 }
 
-export function Chemistry({ user, players }: PlayerInfoProps) {
-  const index = players.indexOf(user);
-  var otherPlayers = players.slice();
-  otherPlayers.splice(index, 1);
+function ChemistryDnD({ user, players }: PlayerInfoProps) {
+  var otherPlayers = players.filter((player) => player.id !== user.id);
   const [playersLeft, setPlayersLeft] = useState<User[]>([]);
   const [playersMiddle, setPlayersMiddle] = useState<User[]>(otherPlayers);
   const [playersRight, setPlayersRight] = useState<User[]>([]);
@@ -48,12 +71,27 @@ export function Chemistry({ user, players }: PlayerInfoProps) {
     let middle = playersMiddle.map(({ id }) => id);
     let right = playersRight.map(({ id }) => id);
     const data = { user: user.id, hate: left, undecided: middle, love: right };
-    const response = await apiAuth("chemistry", data, "POST");
-    response ? setDialog(response) : setDialog("try sending again");
+    const response = await apiAuth("chemistry", data, "PUT");
+    setDialog(response || "try sending again");
+  }
+
+  async function handleGet() {
+    const chemistry = (await apiAuth("chemistry", null, "GET")) as Chemistry;
+    setPlayersLeft(filterSort(otherPlayers, chemistry.hate));
+    setPlayersMiddle(filterSort(otherPlayers, chemistry.undecided));
+    setPlayersRight(filterSort(otherPlayers, chemistry.love));
   }
 
   return (
     <>
+      <HeaderControl
+        onLoad={handleGet}
+        onClear={() => {
+          setPlayersRight([]);
+          setPlayersMiddle(otherPlayers);
+          setPlayersLeft([]);
+        }}
+      />
       <div className="container">
         <div className="box three">
           <h2>😬</h2>
@@ -111,7 +149,7 @@ export function Chemistry({ user, players }: PlayerInfoProps) {
   );
 }
 
-export function MVP({ user, players }: PlayerInfoProps) {
+function MVPDnD({ user, players }: PlayerInfoProps) {
   const [availablePlayers, setAvailablePlayers] = useState<User[]>(players);
   const [rankedPlayers, setRankedPlayers] = useState<User[]>([]);
 
@@ -127,12 +165,25 @@ export function MVP({ user, players }: PlayerInfoProps) {
     setDialog("sending...");
     let mvps = rankedPlayers.map(({ id }) => id);
     const data = { user: user.id, mvps: mvps };
-    const response = await apiAuth("mvps", data, "POST");
+    const response = await apiAuth("mvps", data, "PUT");
     response ? setDialog(response) : setDialog("try sending again");
   }
 
+  async function handleGet() {
+    const mvps = (await apiAuth("mvps", null, "GET")) as MVPRanking;
+    setRankedPlayers(filterSort(players, mvps.mvps));
+    setAvailablePlayers(players.filter((user) => !mvps.mvps.includes(user.id)));
+  }
+
   return (
     <>
+      <HeaderControl
+        onLoad={handleGet}
+        onClear={() => {
+          setAvailablePlayers(players);
+          setRankedPlayers([]);
+        }}
+      />
       <div className="container">
         <div className="box two">
           <h2>🥏🏃</h2>
@@ -190,6 +241,27 @@ export function MVP({ user, players }: PlayerInfoProps) {
   );
 }
 
+interface HeaderControlProps {
+  onLoad: () => void;
+  onClear: () => void;
+}
+function HeaderControl({ onLoad, onClear }: HeaderControlProps) {
+  return (
+    <>
+      <div>
+        <LoadButton onClick={onLoad} />
+        <ClearButton onClick={onClear} />
+      </div>
+      <div>
+        <span className="grey">
+          assign as many or as few players as you want and don't forget to{" "}
+          <b>submit</b> 💾 when you're done :)
+        </span>
+      </div>
+    </>
+  );
+}
+
 export default function Rankings() {
   const { user } = useSession();
   const [players, setPlayers] = useState<User[] | null>(null);
@@ -230,18 +302,13 @@ export default function Rankings() {
               </button>
             ))}
           </div>
-          <span className="grey">
-            assign as many or as few players as you want
-            <br />
-            and don't forget to <b>submit</b> 💾 when you're done :)
-          </span>
           {tabs.map((tab) => {
             if (openTab !== tab.id) return null;
             switch (tab.id) {
               case "Chemistry":
-                return <Chemistry key={tab.id} {...{ user, players }} />;
+                return <ChemistryDnD key={tab.id} {...{ user, players }} />;
               case "MVP":
-                return <MVP key={tab.id} {...{ user, players }} />;
+                return <MVPDnD key={tab.id} {...{ user, players }} />;
               default:
                 return null;
             }