Migrate to new date format

.env.production

@@ -0,0 +1 @@
+REACT_APP_API_URL=https://shulneffapi.leafbla.de

data/file.json

@@ -0,0 +1,26 @@
+{
+  "entries": {
+    "20250511": {
+      "items": [
+        {
+          "variant": "allergy",
+          "date": "2025-05-11 23:57:10"
+        },
+        {
+          "variant": "eats",
+          "item": "Nix gesse",
+          "date": "2025-05-11 23:57:13"
+        },
+        {
+          "variant": "eats",
+          "item": "Manchmal was gesse",
+          "date": "2025-05-11 23:57:18"
+        },
+        {
+          "variant": "allergy",
+          "date": "2025-05-11 23:57:26"
+        }
+      ]
+    }
+  }
+}

package.json

@@ -24,7 +24,8 @@
     "start": "react-scripts start",
     "build": "react-scripts build",
     "test": "react-scripts test",
-    "eject": "react-scripts eject"
+    "server": "node server/server.js",
+    "frontend": "react-scripts start"
   },
   "eslintConfig": {
     "extends": [

src/App.css

@@ -33,6 +33,9 @@ h1,h2,h3 {
   flex-direction: column;
   gap: 10px;
 }
+.entry-table td {
+  min-width: 40px;
+}
 .entry-table .reacts {
   background-color: #DDEB9D;
 }

src/App.tsx

@@ -1,12 +1,11 @@
 import React, { JSX, useEffect, useState } from 'react';
 import './App.css';
-import { addEntry, APIEndPoint, ensureToday, getAPI, getToday, removeEntry } from './api';
-import { ItemType, Store, StoreEntry } from './types';
+import { addEntry, APIEndPoint, getAPI, removeEntry } from './api';
+import { ItemType, Store, WithoutDate } from './types';
 import dayjs from 'dayjs';
 
 const defaultStore: Store = {
-  index: [],
-  version: 0,
+  version: 1,
   entries: {},
 };
 
@@ -18,7 +17,7 @@ export const App : React.FC = () => {
   useEffect(() => {
     const f = async () => {
       const st = await API.read();
-      setStore(ensureToday(st));
+      setStore(st);
     };
     f();
   }, [API]);
@@ -27,15 +26,16 @@ export const App : React.FC = () => {
 
 
  const formSubmit =  async () => {
-              const newst = addEntry(store, {variant: "eats", date: new Date().toString(), item: input} );
-              console.log("newstore is", newst);
-              API.write(JSON.stringify(store)).then(async () => {
-                setTimeout(async () => {
-                  const fromserver = await API.read();
-                  setStore({...fromserver} );
-                  setInput("");
-                }, 150);
-              })
+   const entry : WithoutDate<ItemType> = {variant: "eats", item: input};
+    const newStore = addEntry(store, entry);
+    console.log("newstore is", newStore);
+    API.write(JSON.stringify(store)).then(async () => {
+      setTimeout(async () => {
+        const fromserver = await API.read();
+        setStore({...fromserver} );
+        setInput("");
+      }, 150);
+    })
  };
  const [input, setInput] = useState<string>("");
 
@@ -71,7 +71,7 @@ export const App : React.FC = () => {
        <div className="reacts">
        <button 
        onClick={ async () => {
-         const newst = addEntry(store, {variant: "allergy", date: new Date().toString()} );
+         const newst = addEntry(store, {variant: "allergy"} );
          await API.write(JSON.stringify(store))
          const fromserver = await API.read();
          setStore({...fromserver} );
@@ -96,7 +96,7 @@ export const App : React.FC = () => {
  );
 };
 
-const DATEFORMAT = "YYYY MM DD HH:mm";
+const DATEFORMAT = "MMM DD, HH:mm";
 
 export const RenderTable : React.FC<{API: APIEndPoint, store: Store, setStore: (store: Store) => void}> = ({store, API, setStore}) => {
 

src/api.ts

@@ -1,7 +1,7 @@
-import { ItemType, Store, StoreEntry } from "./types"
+import { currentTimestamp, getDateID, ItemType, Store, StoreEntry, WithoutDate } from "./types"
 
 
-const defaultEndpoint = "https://shulneffapi.leafbla.de"
+const endpoint = process.env.REACT_APP_API_URL ?? "API endpoint missing!";
 
 export type APIEndPoint = {
   write: (json: string) => Promise<void>,
@@ -9,7 +9,7 @@ export type APIEndPoint = {
 };
 
   const makeEndpoint = (key: string, method: string, endPointOverride?: string): string => {
-    return `${endPointOverride ?? defaultEndpoint}\/${method}\/${key}\/`;
+    return `${endPointOverride ?? endpoint}\/${method}\/${key}\/`;
   }
 
 
@@ -33,53 +33,23 @@ export type APIEndPoint = {
     }
   });
 
-  export const ensureToday = (store: Store): Store => {
-    const today : Date = new Date();
-    const storeEntry = store.index.find(([key, dateString]) => {
-      const date = new Date(dateString);
-      const [y, m, d] = [today.getFullYear(), today.getMonth(), today.getDay()];
-      return (date.getFullYear() === y && date.getMonth() === m && date.getDay() == d);
-    });
-
-    if (storeEntry !== undefined) return store;
-
-    const indexKey = today.getDay() + today.getMonth() * 100 + today.getFullYear() * 10000;
-    const entries = store.entries;
-    const newEntry : StoreEntry = {
-      items: [],
-    }
-    entries[indexKey] = newEntry;
-
-    return {
-      entries: entries,
-      index: [[indexKey, today.toString()], ...store.index ],
-      version: store.version,
-    };
-  }
-
-  export const addEntry = (store: Store, entry: ItemType): Store => {
-    const [storeIndex, dateString] = getToday(ensureToday(store))!;
-    const today = store.entries[storeIndex];
-    today.items = [...today.items, entry];
-    store.entries[storeIndex] = today;
+  export const addEntry = (store: Store, entry: WithoutDate<ItemType> ): Store => {
+    const dID = getDateID()
+    const storeEntry = store.entries[dID] ?? { items: [] };
+    storeEntry.items = [...storeEntry.items, {...entry, date: currentTimestamp() }];
+    store.entries[dID] = storeEntry;
     return store;
   }
 
   export const removeEntry = (store: Store, entry: ItemType): Store => {
-    const [storeIndex, dateString] = getToday(ensureToday(store))!;
-    const today = store.entries[storeIndex];
-    today.items = today.items.filter((item) => JSON.stringify(item) !== JSON.stringify(entry));
-    store.entries[storeIndex] = today;
+    console.log("removing", entry, "from", store)
+    Object.keys(store.entries).forEach((k) => {
+      const storeEntry = store.entries[parseInt(k)];
+      storeEntry.items = [...storeEntry.items.filter((item) =>
+       !(item.date === entry.date && item.variant === entry.variant && ("item" in item && "item" in entry ? item.item === entry.item : true))
+                                                )];
+       store.entries[parseInt(k)] = storeEntry;
+    });
     return store;
   }
 
-  export const getToday = (store: Store) => {
-    if (!store) return;
-    const today : Date = new Date();
-    const storeEntry = store.index.find(([key, dateString]) => {
-      const date = new Date(dateString);
-      const [y, m, d] = [today.getFullYear(), today.getMonth(), today.getDay()];
-      return (date.getFullYear() === y && date.getMonth() === m && date.getDay() == d);
-    });
-    return storeEntry;
-  };

src/types.ts

@@ -1,17 +1,28 @@
+import dayjs from "dayjs";
+
 export type DateString = string;
-export type VersionedStore = {
-  1: {
-    index: Array<[number, DateString]>,
-    entries: {[ key: number ]: StoreEntry }
-    version: 0,
-  },
+export type DateID = number;
+export type Timestamp = string; /* Strings formatted YYYY-MM-DD HH:mm:ss */
+
+export type Store = {
+  entries: {[ key: DateID ]: StoreEntry }
+  version: 1,
+};
+
+export const getDateID = (): DateID => {
+  const d = dayjs(new Date());
+  return d.year() * 10000 + (d.month()+1) * 100 + d.date();
+}
+export const dateFromDateId = (dateID: DateID): Date => {
+  return new Date(Math.floor(dateID / 10000), Math.floor(dateID % 10000 / 100)-1, dateID % 100);
+}
+export const currentTimestamp = () => {
+  return dayjs(new Date()).format("YYYY-MM-DD HH:mm:ss");
 }
 
-export type Store = VersionedStore[1];
-
+export type WithoutDate<T> = T extends any ? Omit<T, "date"> : never;
 export type ItemType = ({
-    date: DateString,
-    variant: "eats" | "allergy",
+    date: Timestamp,
   } & ({
     variant: "eats",
     item: string