Refactor application structure and simplify implementation

src/app/App.view.test.ts

@@ -0,0 +1,79 @@
+import { describe, expect, it } from "vitest";
+import type {
+  ApplyConfigurationResult,
+  PingServerResponse,
+} from "../api/tauriCommands";
+import type { ComponentStatus } from "../domain/types";
+import {
+  noticeFromConfigurationApply,
+  pingSummary,
+  routeChainSegments,
+} from "./viewModel";
+
+const runningProxiFyre: ComponentStatus = {
+  id: "proxyfier",
+  name: "ProxiFyre",
+  state: "running",
+  installed: true,
+  running: true,
+  path: "C:\\Tools\\ProxiFyre\\ProxiFyre.exe",
+  problems: [],
+  actions: [],
+};
+
+describe("App view helpers", () => {
+  it("describes the external SOCKS5 route without Local sing-box", () => {
+    const segments = routeChainSegments({
+      routeMode: "external",
+      proxyInput: "proxy.example.test:1080",
+      proxyfier: runningProxiFyre,
+      singbox: undefined,
+      singBoxStatus: null,
+      selectedServer: null,
+      appCount: 2,
+      isDetectingComponents: false,
+    });
+
+    expect(segments.map((segment) => segment.id)).toEqual([
+      "apps",
+      "proxifyre",
+      "endpoint",
+      "exit",
+    ]);
+    expect(segments[2]).toMatchObject({
+      value: "proxy.example.test:1080",
+      tone: "ok",
+    });
+    expect(segments[3].details).toContain(
+      "Local sing-box не нужен для этого маршрута.",
+    );
+  });
+
+  it("summarizes the fastest successful ping", () => {
+    const results = [
+      { tag: "slow", ok: true, latency: 90 },
+      { tag: "failed", ok: false },
+      { tag: "fast", ok: true, latency: 20 },
+    ] as PingServerResponse[];
+
+    expect(pingSummary(results)).toBe("Ответили 2/3; быстрее fast: 20 ms.");
+  });
+
+  it("distinguishes rolled-back and partial apply failures", () => {
+    const base: ApplyConfigurationResult = {
+      success: false,
+      changed: false,
+      partialState: false,
+      message: "Helper failed; previous files restored.",
+      generatedConfigPath:
+        "C:\\ProgramData\\ProxyWarden\\generated\\proxifyre-app-config.json",
+      restartRequired: [],
+      phases: [],
+    };
+
+    expect(noticeFromConfigurationApply(base).title).toBe("Изменения отменены");
+    expect(
+      noticeFromConfigurationApply({ ...base, partialState: true }).title,
+    ).toBe("Проверь состояние файлов");
+  });
+});