import fs from "node:fs/promises";
import os from "node:os";
import path from "node:path";
import { PassThrough } from "node:stream";

import { describe, expect, it } from "vitest";

import { installLaunchAgent, parseLaunchctlPrint } from "./launchd.js";

describe("launchd runtime parsing", () => {
  it("parses state, pid, and exit status", () => {
    const output = [
      "state = running",
      "pid = 4242",
      "last exit status = 1",
      "last exit reason = exited",
    ].join("\n");
    expect(parseLaunchctlPrint(output)).toEqual({
      state: "running",
      pid: 4242,
      lastExitStatus: 1,
      lastExitReason: "exited",
    });
  });
});

describe("launchd install", () => {
  it("enables service before bootstrap (clears persisted disabled state)", async () => {
    const originalPath = process.env.PATH;
    const originalLogPath = process.env.CLAWDBOT_TEST_LAUNCHCTL_LOG;

    const tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), "clawdbot-launchctl-test-"));
    try {
      const binDir = path.join(tmpDir, "bin");
      const homeDir = path.join(tmpDir, "home");
      const logPath = path.join(tmpDir, "launchctl.log");
      await fs.mkdir(binDir, { recursive: true });
      await fs.mkdir(homeDir, { recursive: true });

      const stubJsPath = path.join(binDir, "launchctl.js");
      await fs.writeFile(
        stubJsPath,
        [
          'import fs from "node:fs";',
          "const logPath = process.env.CLAWDBOT_TEST_LAUNCHCTL_LOG;",
          "if (logPath) {",
          "  fs.appendFileSync(logPath, JSON.stringify(process.argv.slice(2)) + \"\\n\", \"utf8\");",
          "}",
          "process.exit(0);",
          "",
        ].join("\n"),
        "utf8",
      );

      if (process.platform === "win32") {
        await fs.writeFile(
          path.join(binDir, "launchctl.cmd"),
          `@echo off\r\nnode "%~dp0\\launchctl.js" %*\r\n`,
          "utf8",
        );
      } else {
        const shPath = path.join(binDir, "launchctl");
        await fs.writeFile(
          shPath,
          `#!/bin/sh\nnode "$(dirname "$0")/launchctl.js" "$@"\n`,
          "utf8",
        );
        await fs.chmod(shPath, 0o755);
      }

      process.env.CLAWDBOT_TEST_LAUNCHCTL_LOG = logPath;
      process.env.PATH = `${binDir}${path.delimiter}${originalPath ?? ""}`;

      const env: Record<string, string | undefined> = {
        HOME: homeDir,
        CLAWDBOT_PROFILE: "default",
      };
      await installLaunchAgent({
        env,
        stdout: new PassThrough(),
        programArguments: ["node", "-e", "process.exit(0)"],
      });

      const calls = (await fs.readFile(logPath, "utf8"))
        .split("\n")
        .filter(Boolean)
        .map((line) => JSON.parse(line) as string[]);

      const domain = typeof process.getuid === "function" ? `gui/${process.getuid()}` : "gui/501";
      const label = "com.clawdbot.gateway";
      const plistPath = path.join(homeDir, "Library", "LaunchAgents", `${label}.plist`);
      const serviceId = `${domain}/${label}`;

      const enableCalls = calls.filter((c) => c[0] === "enable" && c[1] === serviceId);
      expect(enableCalls).toHaveLength(1);

      const enableIndex = calls.findIndex((c) => c[0] === "enable" && c[1] === serviceId);
      const bootstrapIndex = calls.findIndex(
        (c) => c[0] === "bootstrap" && c[1] === domain && c[2] === plistPath,
      );
      expect(enableIndex).toBeGreaterThanOrEqual(0);
      expect(bootstrapIndex).toBeGreaterThanOrEqual(0);
      expect(enableIndex).toBeLessThan(bootstrapIndex);
    } finally {
      process.env.PATH = originalPath;
      if (originalLogPath === undefined) {
        delete process.env.CLAWDBOT_TEST_LAUNCHCTL_LOG;
      } else {
        process.env.CLAWDBOT_TEST_LAUNCHCTL_LOG = originalLogPath;
      }
      await fs.rm(tmpDir, { recursive: true, force: true });
    }
  });
});