feat: 用自定义侧边栏替换聊天室 Conversations 组件，提取公共 SidebarGroup 和 date-group

tests/web/utils/date-group.test.ts

@@ -0,0 +1,104 @@
+import { describe, expect, test } from "bun:test";
+
+import { getDateGroup, groupByDate } from "../../../src/web/shared/utils/date-group";
+
+function makeDate(daysAgo: number): string {
+  const d = new Date();
+  d.setDate(d.getDate() - daysAgo);
+  return d.toISOString();
+}
+
+describe("getDateGroup", () => {
+  test("今天的日期返回 today", () => {
+    const now = new Date();
+    const result = getDateGroup(now.toISOString(), now);
+    expect(result).toBe("today");
+  });
+
+  test("昨天的日期返回 yesterday", () => {
+    const now = new Date();
+    const yesterday = new Date(now);
+    yesterday.setDate(yesterday.getDate() - 1);
+    const result = getDateGroup(yesterday.toISOString(), now);
+    expect(result).toBe("yesterday");
+  });
+
+  test("本周内的日期返回 thisWeek", () => {
+    const now = new Date();
+    const dayOfWeek = now.getDay();
+    const mondayOffset = dayOfWeek === 0 ? 6 : dayOfWeek - 1;
+    const wednesday = new Date(now);
+    wednesday.setDate(now.getDate() - (dayOfWeek === 0 ? 6 : dayOfWeek - 1) + 2);
+    if (wednesday > now) {
+      const tuesday = new Date(now);
+      tuesday.setDate(now.getDate() - mondayOffset + 1);
+      if (tuesday < now && tuesday.getDate() !== now.getDate() - 1) {
+        const result = getDateGroup(tuesday.toISOString(), now);
+        expect(result).toBe("thisWeek");
+        return;
+      }
+    }
+    const tuesday = new Date(now);
+    tuesday.setDate(now.getDate() - mondayOffset + 1);
+    if (tuesday.toDateString() !== now.toDateString()) {
+      const yesterday = new Date(now);
+      yesterday.setDate(yesterday.getDate() - 1);
+      if (tuesday.toDateString() !== yesterday.toDateString()) {
+        const result = getDateGroup(tuesday.toISOString(), now);
+        expect(result).toBe("thisWeek");
+        return;
+      }
+    }
+    expect(true).toBe(true);
+  });
+
+  test("本月内的日期返回 thisMonth", () => {
+    const now = new Date(2026, 5, 15);
+    const earlier = new Date(2026, 5, 3);
+    const result = getDateGroup(earlier.toISOString(), now);
+    expect(result).toBe("thisMonth");
+  });
+
+  test("更早的日期返回 earlier", () => {
+    const now = new Date(2026, 5, 15);
+    const earlier = new Date(2026, 3, 1);
+    const result = getDateGroup(earlier.toISOString(), now);
+    expect(result).toBe("earlier");
+  });
+});
+
+describe("groupByDate", () => {
+  test("按 dateField 分组并返回有序结果", () => {
+    const now = new Date();
+    const items = [
+      { id: "1", title: "今天", updatedAt: now.toISOString() },
+      { id: "2", title: "昨天", updatedAt: makeDate(1) },
+      { id: "3", title: "更早", updatedAt: makeDate(60) },
+    ];
+
+    const groups = groupByDate(items, "updatedAt");
+
+    const todayGroup = groups.find((g) => g.key === "today")!;
+    expect(todayGroup.items.length).toBe(1);
+    expect(todayGroup.items[0]!.id).toBe("1");
+
+    const yesterdayGroup = groups.find((g) => g.key === "yesterday")!;
+    expect(yesterdayGroup.items.length).toBe(1);
+
+    const earlierGroup = groups.find((g) => g.key === "earlier")!;
+    expect(earlierGroup.items.length).toBe(1);
+
+    const emptyGroups = groups.filter((g) => g.key === "thisWeek" || g.key === "thisMonth");
+    emptyGroups.forEach((g) => {
+      expect(g.items.length).toBe(0);
+    });
+  });
+
+  test("空数组返回所有空分组", () => {
+    const groups = groupByDate([] as Array<{ updatedAt: string }>, "updatedAt");
+    expect(groups.length).toBe(5);
+    groups.forEach((g) => {
+      expect(g.items.length).toBe(0);
+    });
+  });
+});