import { describe, expect, test } from "bun:test";

import type { CheckerContext } from "../../../../../src/server/checker/runner/types";
import type { ResolvedCommandTarget } from "../../../../../src/server/checker/types";

import { CommandChecker } from "../../../../../src/server/checker/runner/command/runner";

const checker = new CommandChecker();

function makeCtx(timeoutMs = 5000): CheckerContext {
  const controller = new AbortController();
  setTimeout(() => controller.abort(), timeoutMs);
  return { signal: controller.signal };
}

function makeTarget(
  command: Partial<ResolvedCommandTarget["command"]>,
  overrides?: Partial<ResolvedCommandTarget>,
): ResolvedCommandTarget {
  return {
    command: {
      args: ["hello"],
      cwd: "/tmp",
      env: {},
      exec: "echo",
      maxOutputBytes: 1024 * 1024,
      ...command,
    },
    group: "default",
    intervalMs: 60000,
    name: "test-cmd",
    timeoutMs: 5000,
    type: "command",
    ...overrides,
  };
}

describe("CommandChecker", () => {
  test("exitCode=0 成功", async () => {
    const result = await checker.execute(makeTarget({ args: [], exec: "true" }), makeCtx());
    expect(result.matched).toBe(true);
    expect(result.statusDetail).toBe("exitCode=0");
    expect(result.failure).toBeNull();
  });

  test("exitCode=1 不匹配默认 [0]", async () => {
    const result = await checker.execute(makeTarget({ args: [], exec: "false" }), makeCtx());
    expect(result.matched).toBe(false);
    expect(result.statusDetail).toBe("exitCode=1");
    expect(result.failure!.phase).toBe("exitCode");
  });

  test("exitCode=1 匹配自定义 [1]", async () => {
    const result = await checker.execute(
      makeTarget({ args: [], exec: "false" }, { expect: { exitCode: [1] } }),
      makeCtx(),
    );
    expect(result.matched).toBe(true);
    expect(result.statusDetail).toBe("exitCode=1");
  });

  test("命令不存在返回 spawn 错误", async () => {
    const result = await checker.execute(makeTarget({ exec: "/nonexistent/command/xyz" }), makeCtx());
    expect(result.matched).toBe(false);
    expect(result.failure!.phase).toBe("exitCode");
    expect(result.failure!.message).toBeTruthy();
  });

  test("超时返回错误", async () => {
    const result = await checker.execute(makeTarget({ args: ["10"], exec: "sleep" }, { timeoutMs: 100 }), makeCtx(100));
    expect(result.matched).toBe(false);
    expect(result.failure!.message).toContain("超时");
  });

  test("stdout 输出捕获", async () => {
    const result = await checker.execute(makeTarget({ args: ["hello world"], exec: "echo" }), makeCtx());
    expect(result.matched).toBe(true);
  });

  test("stdout 匹配 expect", async () => {
    const result = await checker.execute(
      makeTarget({ args: ["hello"], exec: "echo" }, { expect: { stdout: [{ contains: "hello" }] } }),
      makeCtx(),
    );
    expect(result.matched).toBe(true);
  });

  test("stdout 不匹配 expect", async () => {
    const result = await checker.execute(
      makeTarget({ args: ["hello"], exec: "echo" }, { expect: { stdout: [{ contains: "nonexistent" }] } }),
      makeCtx(),
    );
    expect(result.matched).toBe(false);
    expect(result.failure!.phase).toBe("stdout");
  });

  test("stderr 匹配 expect", async () => {
    const result = await checker.execute(
      makeTarget({ args: ["-c", "echo error >&2"], exec: "bash" }, { expect: { stderr: [{ contains: "error" }] } }),
      makeCtx(),
    );
    expect(result.matched).toBe(true);
  });

  test("输出超过 maxOutputBytes", async () => {
    const result = await checker.execute(
      makeTarget({ args: ["-c", "yes | head -1000"], exec: "bash", maxOutputBytes: 10 }),
      makeCtx(),
    );
    expect(result.matched).toBe(false);
    expect(result.failure!.message).toContain("超过限制");
  });

  test("durationMs 非空", async () => {
    const result = await checker.execute(makeTarget({ args: [], exec: "true" }), makeCtx());
    expect(result.durationMs).not.toBeNull();
    expect(result.durationMs!).toBeGreaterThanOrEqual(0);
  });

  test("不使用 shell，通配符不被展开", async () => {
    const result = await checker.execute(
      makeTarget({ args: ["-e", "console.log('*')"], exec: "bun" }, { expect: { stdout: [{ contains: "*" }] } }),
      makeCtx(),
    );
    expect(result.matched).toBe(true);
  });

  test("serialize 返回命令摘要和 config JSON", () => {
    const target = makeTarget({ args: ["hello"], exec: "echo" });
    const s = checker.serialize(target);
    expect(s.target).toBe("exec echo hello");
    const config = JSON.parse(s.config) as { args: string[]; exec: string };
    expect(config.exec).toBe("echo");
    expect(config.args).toEqual(["hello"]);
  });
});