[refactor] implemented the countdown.store.ts

src/features/countdown/state/countdown.store.ts

@@ -1 +1,88 @@
-//TODO: Implement countdown store
+//TODO: Implement countdown store
+
+import type {CountdownSnapshot} from "../model/countdown.types";
+import {writable} from "svelte/store";
+import {createCountdown, listCountdowns} from "../api/countdown.client";
+import type {Duration} from "../../../shared/time/duration";
+
+
+type CountdownStateStore = {
+    items: CountdownSnapshot[];
+    selected: CountdownSnapshot | null;
+    selectedId: number | null;
+    loading: boolean;
+    error: string | null;
+};
+
+const initalStateStore: CountdownStateStore = {
+    items: [],
+    selected: null,
+    selectedId: null,
+    loading: false,
+    error: null,
+};
+
+const {subscribe} = writable(initalStateStore);
+
+function resolveSelected(items: CountdownSnapshot[], selectedId: number | null): CountdownSnapshot | null {
+    return selectedId === null
+        ? null
+        : items.find((x) => x.id === selectedId) ?? null;
+}
+
+export function loadList() {
+    initalStateStore.loading = true;
+    listCountdowns().then((items) => {
+        initalStateStore.items = items;
+        initalStateStore.selectedId = initalStateStore.selectedId === null
+            ? (items.length > 0 ? items[0].id : null)
+            : initalStateStore.selectedId;
+        initalStateStore.selected = resolveSelected(items, initalStateStore.selectedId);
+        initalStateStore.loading = false;
+    });
+}
+
+export function select(id: number) {
+    initalStateStore.selectedId = id;
+    initalStateStore.selected = resolveSelected(initalStateStore.items, id);
+}
+
+export function create(label: string, duration: Duration) {
+    createCountdown(label, duration).then((id) => {
+        loadList();
+        initalStateStore.selectedId = id;
+        initalStateStore.selected = resolveSelected(initalStateStore.items, id);
+    })
+}
+
+export function startSelected() {
+
+}
+
+export function resumeSelected() {
+
+}
+
+export function pauseSelected() {
+
+}
+
+export function resetSelected() {
+
+}
+
+export function deleteSelected() {
+
+}
+
+export const countdownStore = {
+    subscribe,
+    loadList,
+    select,
+    create,
+    startSelected,
+    resumeSelected,
+    pauseSelected,
+    resetSelected,
+    deleteSelected
+};