Add backend log management

tests/log-manager.test.ts

@@ -0,0 +1,72 @@
+import { readFile, rm, mkdtemp } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { afterEach, beforeEach, describe, expect, it } from "vitest";
+import { appLogFilePath, clearAppLogs, listAppLogs, recordAppLog } from "@/lib/server/log-manager";
+
+let runtimeDir = "";
+let previousRuntimeDir: string | undefined;
+let previousLogDir: string | undefined;
+
+describe("server log manager", () => {
+  beforeEach(async () => {
+    runtimeDir = await mkdtemp(join(tmpdir(), "zhinian-logs-"));
+    previousRuntimeDir = process.env.ZHINIAN_RUNTIME_DIR;
+    previousLogDir = process.env.ZHINIAN_LOG_DIR;
+    process.env.ZHINIAN_RUNTIME_DIR = runtimeDir;
+    delete process.env.ZHINIAN_LOG_DIR;
+  });
+
+  afterEach(async () => {
+    restoreEnv("ZHINIAN_RUNTIME_DIR", previousRuntimeDir);
+    restoreEnv("ZHINIAN_LOG_DIR", previousLogDir);
+    await rm(runtimeDir, { force: true, recursive: true });
+  });
+
+  it("records, filters, and clears server logs", async () => {
+    await recordAppLog({
+      level: "error",
+      source: "api.test",
+      message: "EvoLink API_KEY=super-secret failed",
+      error: new Error("token=abc123 failed"),
+      status: 500,
+      request: new Request("http://local.test/api/test?x=1", { method: "POST" }),
+      details: {
+        Authorization: "Bearer secret-token",
+        nested: { password: "123456", prompt: "商品海报" }
+      }
+    });
+    await recordAppLog({
+      level: "warning",
+      source: "worker.test",
+      message: "retry scheduled"
+    });
+
+    const errors = await listAppLogs({ level: "error", q: "evolink" });
+    expect(errors).toHaveLength(1);
+    expect(errors[0]).toMatchObject({
+      level: "error",
+      source: "api.test",
+      status: 500,
+      method: "POST",
+      path: "/api/test?x=1"
+    });
+    expect(JSON.stringify(errors[0])).not.toContain("super-secret");
+    expect(JSON.stringify(errors[0])).not.toContain("secret-token");
+    expect(JSON.stringify(errors[0])).not.toContain("123456");
+
+    const raw = await readFile(appLogFilePath(), "utf8");
+    expect(raw).toContain("retry scheduled");
+
+    await clearAppLogs();
+    expect(await listAppLogs()).toHaveLength(0);
+  });
+});
+
+function restoreEnv(name: string, value: string | undefined) {
+  if (value === undefined) {
+    delete process.env[name];
+    return;
+  }
+  process.env[name] = value;
+}