Saving inputs to browser storage

src/store.js

@@ -0,0 +1,65 @@
+import * as yup from "yup";
+
+const DEFAULTS_KEY = 'defaults';
+const RECORDED_KEY = 'recorded';
+
+const defaultsSchema = yup.object({
+    startTime: yup.string().required(),
+    target: yup.string().required(),
+}).required();
+
+const recordedSchema = yup.object({
+    recorded: yup.string().required(),
+    updated: yup.number().required().nullable()
+}).required();
+
+function getJsonValue(key, defaultValue = {}) {
+    const item = localStorage.getItem(key);
+    if (item != null) {
+        try {
+            const data = JSON.parse(item);
+            if (typeof data === 'object') {
+                return data;
+            }
+        } catch (e) {
+            localStorage.removeItem(key);
+            return defaultValue;
+        }
+    }
+    return defaultValue;
+}
+
+export function getStoredDefaults() {
+    const value = getJsonValue(DEFAULTS_KEY);
+    try {
+        return defaultsSchema.validateSync(value);
+    } catch (e) {
+        return {};
+    }
+}
+
+export function setStoredDefaults(data) {
+    localStorage.setItem(DEFAULTS_KEY, JSON.stringify(data));
+}
+
+export function getStoredRecordedTime() {
+    const info = getJsonValue(RECORDED_KEY, { recorded: '', updated: null });
+    try {
+        const data = recordedSchema.validateSync(info);
+        if (data.updated != null) {
+            const startOfDay = new Date();
+            startOfDay.setHours(0, 0, 0, 0);
+
+            if (data.updated < startOfDay.valueOf()) {
+                return '';
+            }
+        }
+        return data.recorded;
+    } catch (e) {
+        return '';
+    }
+}
+
+export function setStoredRecordedTime(recorded) {
+    localStorage.setItem(RECORDED_KEY, JSON.stringify({ recorded, updated: new Date().valueOf() }));
+}