/**
 * @file Tests Uninstall AgentHub (scripts/uninstall.js, `agenthub uninstall`,
 * POST /api/settings/uninstall): on a throwaway HOME with every footprint in
 * place, everything of AgentHub's goes and everything else stays — foreign
 * hooks, other plugins and marketplaces, conversations, worktrees. Service
 * manager, tmux, servers and the `claude` CLI are fakes; nothing real is touched.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

const { describe, it, before, after } = require("node:test");
const assert = require("node:assert/strict");
const fs = require("node:fs");
const os = require("node:os");
const path = require("node:path");

const HOME = fs.mkdtempSync(path.join(os.tmpdir(), "agenthub-uninstall-"));
const CH = path.join(HOME, ".claude");
const saved = { ...process.env };
Object.assign(process.env, {
  HOME,
  CLAUDE_HOME: CH,
  CODEX_HOME: path.join(HOME, ".codex"),
  AGENTHUB_GEMINI_DIR: path.join(HOME, ".gemini"),
  LANES_ROOT: path.join(CH, "agenthub-lanes"),
  AGENTHUB_SETTINGS_FILE: path.join(HOME, ".config", "agenthub", "settings.env"),
  TMPDIR: path.join(HOME, "tmp"),
});
delete process.env.DASHBOARD_DATA_DIR;
delete process.env.DASHBOARD_DB_PATH;
delete process.env.AGENTHUB_RUN_ID;

const uninstall = require("../../scripts/uninstall");
const codexHooks = require("../lib/codex-hooks");
const agyHooks = require("../lib/antigravity-hooks");

const p = (...parts) => path.join(HOME, ...parts);
const write = (file, body) => {
  fs.mkdirSync(path.dirname(file), { recursive: true });
  fs.writeFileSync(file, typeof body === "string" ? body : JSON.stringify(body, null, 2));
};
const json = (file) => JSON.parse(fs.readFileSync(file, "utf8"));
const cmd = (c) => ({ hooks: [{ type: "command", command: c }] });

function fakeIo() {
  const calls = [];
  let sessions = ["agenthub-lane-1", "agenthub-lane-1-2", "work"];
  let pids = [111];
  const installed = path.join(CH, "plugins", "installed_plugins.json");
  const known = path.join(CH, "plugins", "known_marketplaces.json");
  return {
    calls,
    svc: {
      label: "systemd --user service",
      systemctlAvailable: () => true,
      unitIsOurs: () => true,
      unitPath: () => "/fake/agenthub.service",
      uninstallUserService: () => (calls.push("service"), "removed"),
    },
    tmux: {
      listSessions: (prefix) => sessions.filter((s) => s.startsWith(prefix)),
      killSession: (n) => {
        calls.push(`kill ${n}`);
        sessions = sessions.filter((s) => s !== n);
      },
    },
    livePids: () => pids,
    stopDashboard: () => (calls.push("stop"), (pids = [])),
    liveTray: () => null,
    stopTray: () => {},
    claude: () => "claude",
    // Plays Claude Code: drops the record it was asked to drop.
    run: (_c, args) => {
      calls.push(args.join(" "));
      if (args[1] === "uninstall") {
        const d = json(installed);
        delete d.plugins[args[2]];
        write(installed, d);
      } else {
        const d = json(known);
        delete d[args[3]];
        write(known, d);
      }
      return { status: 0 };
    },
    kill: (pid) => {
      if (pid !== 4242) throw new Error("ESRCH");
    },
    sleep: () => {},
  };
}

before(() => {
  fs.mkdirSync(p("tmp"), { recursive: true });
  write(p(".claude", "settings.json"), {
    hooks: {
      PreToolUse: [cmd('node "/x/agenthub/scripts/hook-handler.js" PreToolUse'), cmd("their-hook")],
      SessionStart: [cmd('node "/c/agenthub/v1/scripts/plugin-bootstrap.js"')],
    },
    statusLine: { type: "command", command: 'node "/x/agenthub/statusline/statusline.js"' },
    theme: "dark",
  });
  write(p(".claude", "settings.json.agenthub-bak"), "{}");
  write(p(".claude", "plugins", "installed_plugins.json"), {
    plugins: {
      "agenthub@sg": [{ scope: "user", installPath: p(".claude/plugins/cache/sg/agenthub/v1") }],
      "agenthub-analytics@agenthub": [{ scope: "user" }],
      "sg-all@sg": [{ scope: "user" }],
    },
  });
  write(p(".claude", "plugins", "known_marketplaces.json"), { sg: {}, agenthub: {} });
  write(p(".claude", "plugins", "cache", "sg", "agenthub", "v1", "package.json"), "{}");
  write(p(".claude", "plugins", "cache", "sg", "sg-all", "v1", "package.json"), "{}");
  write(p(".claude", "projects", "repo", "session.jsonl"), "{}\n");
  write(p(".claude", ".agenthub.json"), "{}");
  write(p(".claude", "agenthub-proxies", "a.json"), "{}");
  write(p(".claude", "agenthub-git-credentials", "credentials.json"), "{}");
  write(p(".claude", "agenthub", "dashboard.db"), "db");
  write(p(".claude", "agenthub", "runtime", "state.json"), "{}");
  write(p(".claude", "agenthub-lanes", ".state", "lane1", "run", "web.pid"), "4242");
  write(p(".claude", "agenthub-lanes", "repo__feature", "README.md"), "user code");
  write(p(".codex", "hooks.json"), { hooks: { Stop: [cmd("their-codex-hook")] } });
  codexHooks.install();
  write(p(".codex", "work.config.toml"), "# Written by AgentHub — AI Proxy profile work.\n");
  write(p(".codex", "mine.config.toml"), "model = 'x'\n");
  write(p(".codex", "sessions", "rollout-1.jsonl"), "{}\n");
  agyHooks.install();
  write(p(".local", "bin", "agenthub"), "#!/bin/sh\n# agenthub-plugin-launcher\n");
  write(p(".config", "agenthub", "settings.env"), "CODEX_HOME=x\n");
});

after(() => {
  process.env = saved;
  fs.rmSync(HOME, { recursive: true, force: true });
});

describe("uninstall", () => {
  it("plans every footprint and leaves the machine untouched", () => {
    const io = fakeIo();
    const keys = uninstall.plan(io).map((s) => s.key);
    assert.deepEqual(keys, [
      "panes",
      "service",
      "servers",
      "stacks",
      "claude-hooks",
      "statusline",
      "codex-hooks",
      "antigravity-hooks",
      "codex-proxies",
      "plugin",
      "files",
      "data",
    ]);
    assert.deepEqual(io.calls, []);
    assert.ok(fs.existsSync(p(".claude", "agenthub", "dashboard.db")));
  });

  it("removes AgentHub's and keeps everything else", () => {
    const io = fakeIo();
    const r = uninstall.run({ io });
    assert.equal(r.ok, true, JSON.stringify(r.steps));

    // Order: panes before the unit before the server; plugin via the CLI.
    assert.deepEqual(io.calls, [
      "kill agenthub-lane-1",
      "kill agenthub-lane-1-2",
      "service",
      "stop",
      "plugin uninstall agenthub@sg -s user -y",
      "plugin uninstall agenthub-analytics@agenthub -s user -y",
      "plugin marketplace remove agenthub",
    ]);

    const settings = json(p(".claude", "settings.json"));
    assert.deepEqual(settings.hooks, { PreToolUse: [cmd("their-hook")] });
    assert.equal(settings.statusLine, undefined);
    assert.equal(settings.theme, "dark");

    const codex = json(p(".codex", "hooks.json"));
    assert.deepEqual(Object.keys(codex.hooks), ["Stop"]);
    assert.ok(!fs.existsSync(p(".codex", "agenthub-hook.sh")));
    assert.ok(!fs.existsSync(p(".codex", "work.config.toml")));
    assert.ok(!fs.existsSync(p(".gemini", "config", "agenthub-hook.sh")));

    for (const gone of [
      ".claude/agenthub",
      ".claude/agenthub-proxies",
      ".claude/agenthub-git-credentials",
      ".claude/.agenthub.json",
      ".claude/settings.json.agenthub-bak",
      ".claude/agenthub-lanes/.state",
      ".claude/plugins/cache/sg/agenthub",
      ".local/bin/agenthub",
      ".config/agenthub",
    ]) {
      assert.ok(!fs.existsSync(p(gone)), `${gone} should be gone`);
    }
    for (const kept of [
      ".claude/projects/repo/session.jsonl",
      ".claude/agenthub-lanes/repo__feature/README.md",
      ".claude/plugins/cache/sg/sg-all",
      ".codex/mine.config.toml",
      ".codex/sessions/rollout-1.jsonl",
    ]) {
      assert.ok(fs.existsSync(p(kept)), `${kept} should be kept`);
    }
    assert.deepEqual(Object.keys(json(p(".claude/plugins/known_marketplaces.json"))), ["sg"]);
    assert.ok(fs.readFileSync(r.log, "utf8").includes("AgentHub uninstalled."));
  });

  it("finds nothing left on disk on a second run", () => {
    const live = ["panes", "service", "servers"]; // the fakes' own processes
    assert.deepEqual(
      uninstall.plan(fakeIo()).filter((s) => !live.includes(s.key)),
      []
    );
  });

  it("keeps the cache when Claude Code still records the plugin", () => {
    write(p(".claude", "plugins", "installed_plugins.json"), {
      plugins: { "agenthub@sg": [{ scope: "user" }] },
    });
    write(p(".claude", "plugins", "cache", "sg", "agenthub", "v2", "package.json"), "{}");
    const io = { ...fakeIo(), run: () => ({ status: 1, stderr: "boom" }) };
    const r = uninstall.run({ io });
    assert.equal(r.ok, false);
    assert.equal(r.steps.find((s) => s.key === "plugin").status, "failed");
    assert.ok(fs.existsSync(p(".claude", "plugins", "cache", "sg", "agenthub", "v2")));
  });
});

describe("isSafeDataDir", () => {
  it("never deletes the home, CLAUDE_HOME, their parents or a stranger's folder", () => {
    assert.equal(uninstall.isSafeDataDir(HOME), false);
    assert.equal(uninstall.isSafeDataDir(CH), false);
    assert.equal(uninstall.isSafeDataDir(path.dirname(HOME)), false);
    assert.equal(uninstall.isSafeDataDir("/"), false);
    assert.equal(uninstall.isSafeDataDir(p("Documents")), false);
    assert.equal(uninstall.isSafeDataDir(p(".claude", "agenthub")), true);
  });
});

describe("Claude hook matching", () => {
  it("is AgentHub's handler or bootstrap only", () => {
    assert.equal(uninstall.isOurHook(cmd('node "/a/scripts/hook-handler.js" Stop')), true);
    assert.equal(uninstall.isOurHook(cmd('node "/a/scripts/plugin-bootstrap.js"')), true);
    assert.equal(uninstall.isOurHook(cmd("their-hook")), false);
  });
});