/**
 * @file Route tests for /api/ai-tools: list shape, enable/disable, default
 * errors, the same-origin guard, /api/run/binary resolving through the
 * catalog, and the A2 install/update jobs, versions and icon routes.
 * @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 http = require("node:http");

const ROOT = fs.mkdtempSync(path.join(os.tmpdir(), "ai-tools-route-"));
process.env.DASHBOARD_DB_PATH = path.join(ROOT, "t.db");
process.env.DASHBOARD_DATA_DIR = path.join(ROOT, "data");
process.env.CLAUDE_HOME = path.join(ROOT, ".claude");
process.env.AGENTHUB_SHELL_PATH = "0";
const BIN = path.join(ROOT, "bin");
fs.mkdirSync(BIN);
for (const name of ["claude", "agy", "npm"]) {
  fs.writeFileSync(path.join(BIN, name), "#!/bin/sh\n");
  fs.chmodSync(path.join(BIN, name), 0o755);
}
const origPath = process.env.PATH;
process.env.PATH = BIN;

const { createApp } = require("../index");
require("../lib/ai-tools").refresh();

let app;
let base;
const request = (method, p, body, headers = {}) =>
  fetch(`${base}${p}`, {
    method,
    headers: { "Content-Type": "application/json", ...headers },
    body: body === undefined ? undefined : JSON.stringify(body),
  }).then(async (r) => ({ status: r.status, body: await r.json().catch(() => null) }));

before(async () => {
  app = http.createServer(createApp());
  await new Promise((r) => app.listen(0, "127.0.0.1", r));
  base = `http://127.0.0.1:${app.address().port}`;
});
after(async () => {
  process.env.PATH = origPath;
  await new Promise((r) => app.close(r));
  fs.rmSync(ROOT, { recursive: true, force: true });
});

describe("/api/ai-tools", () => {
  it("lists the catalog with detection and the default", async () => {
    const { status, body } = await request("GET", "/api/ai-tools");
    assert.equal(status, 200);
    assert.equal(body.default, "claude");
    const agy = body.tools.find((t) => t.id === "antigravity");
    assert.equal(agy.installed, true);
    assert.equal(agy.path, path.join(BIN, "agy"));
    assert.equal(agy.resume, true);
    assert.equal(agy.bypass, true);
    assert.equal(body.tools.find((t) => t.id === "opencode").installed, false);
    assert.equal("args" in agy, false);
  });

  it("disables and re-enables a tool, and sets the default", async () => {
    let r = await request("PUT", "/api/ai-tools/claude", { enabled: false });
    assert.equal(r.status, 200);
    assert.equal(r.body.tools.find((t) => t.id === "claude").enabled, false);
    assert.equal(r.body.default, "antigravity");
    r = await request("PUT", "/api/ai-tools/claude", { enabled: true });
    assert.equal(r.body.default, "claude");
    r = await request("PUT", "/api/ai-tools/antigravity", { default: true });
    assert.equal(r.body.default, "antigravity");
  });

  it("answers ENOTOOL / EBADDEFAULT / EBADFIELD", async () => {
    assert.equal((await request("PUT", "/api/ai-tools/nope", { enabled: false })).status, 404);
    const bad = await request("PUT", "/api/ai-tools/opencode", { default: true });
    assert.equal(bad.status, 400);
    assert.equal(bad.body.error.code, "EBADDEFAULT");
    assert.equal((await request("PUT", "/api/ai-tools/claude", { enabled: "no" })).status, 400);
  });

  it("answers a tool's model choices and keeps its default model", async () => {
    let r = await request("GET", "/api/ai-tools/antigravity/models");
    assert.equal(r.status, 200);
    assert.equal(r.body.flag, true);
    assert.equal(r.body.defaultModel, null);
    r = await request("PUT", "/api/ai-tools/antigravity", { defaultModel: "gemini-3.1-pro" });
    assert.equal(r.status, 200);
    assert.equal(r.body.tools.find((t) => t.id === "antigravity").defaultModel, "gemini-3.1-pro");
    r = await request("GET", "/api/ai-tools/antigravity/models");
    assert.equal(r.body.defaultModel, "gemini-3.1-pro");
    assert.equal(
      (await request("PUT", "/api/ai-tools/antigravity", { defaultModel: "-x" })).status,
      400
    );
    r = await request("PUT", "/api/ai-tools/antigravity", { defaultModel: "" });
    assert.equal(r.body.tools.find((t) => t.id === "antigravity").defaultModel, null);
    assert.equal((await request("GET", "/api/ai-tools/nope/models")).status, 404);
  });

  it("refuses a cross-origin write", async () => {
    const r = await request(
      "PUT",
      "/api/ai-tools/claude",
      { enabled: false },
      { Origin: "https://evil.test" }
    );
    assert.equal(r.status, 403);
  });

  it("refresh re-detects", async () => {
    fs.writeFileSync(path.join(BIN, "opencode"), "#!/bin/sh\n");
    fs.chmodSync(path.join(BIN, "opencode"), 0o755);
    const r = await request("POST", "/api/ai-tools/refresh");
    assert.equal(r.body.tools.find((t) => t.id === "opencode").installed, true);
  });

  it("/api/run/binary resolves through the catalog", async () => {
    const r = await request("GET", "/api/run/binary?tool=antigravity");
    assert.deepEqual(r.body, { found: true, path: path.join(BIN, "agy") });
    assert.equal((await request("GET", "/api/run/binary?tool=rm")).status, 400);
  });
});

describe("lanes on catalog tools", () => {
  it("creates a lane for an installed or not-installed tool, refuses unknown/disabled", async () => {
    const dir = (n) => {
      const d = path.join(ROOT, n);
      fs.mkdirSync(d, { recursive: true });
      return d;
    };
    let r = await request("POST", "/api/lanes", { cwd: dir("a"), title: "a", tool: "opencode" });
    assert.equal(r.status, 201);
    assert.equal(r.body.lane.tool, "opencode");
    r = await request("POST", "/api/lanes", { cwd: dir("b"), title: "b", tool: "omp" });
    assert.equal(r.status, 201, "a tool that is not installed may still get a lane");
    r = await request("POST", "/api/lanes", { cwd: dir("c"), title: "c", tool: "nope" });
    assert.equal(r.body.error.code, "EBADTOOL");
    await request("PUT", "/api/ai-tools/omp", { enabled: false });
    r = await request("POST", "/api/lanes", { cwd: dir("d"), title: "d", tool: "omp" });
    assert.equal(r.status, 400);
    assert.equal(r.body.error.code, "EDISABLED");
    r = await request("POST", "/api/lanes/ensure", { cwd: dir("e"), tool: "omp" });
    assert.equal(r.body.error.code, "EDISABLED");
    r = await request("POST", "/api/lanes/ensure", { cwd: dir("b"), tool: "omp" });
    assert.equal(r.status, 200, "an existing lane on a disabled tool is still found");
    r = await request("POST", "/api/lanes/worktree", { sourceRepo: dir("f"), tool: "omp" });
    assert.equal(r.body.error.code, "EDISABLED");
    await request("PUT", "/api/ai-tools/omp", { enabled: true });
  });
});

describe("install / update / icons", () => {
  const { EventEmitter } = require("node:events");
  const jobs = require("../lib/ai-tool-jobs");
  let spawned = [];
  let hang = false;
  before(() => {
    jobs.__setSpawn((file, args) => {
      spawned.push([file, ...args]);
      const child = new EventEmitter();
      child.stdout = new EventEmitter();
      child.stderr = new EventEmitter();
      child.kill = () => setImmediate(() => child.emit("close", null));
      if (!hang) setImmediate(() => child.emit("close", 0));
      return child;
    });
  });
  after(() => jobs.__setSpawn(null));

  const settle = async () => {
    for (let i = 0; i < 200; i++) {
      const r = await request("GET", "/api/ai-tools/job");
      if (r.body?.status !== "running") return r.body;
      await new Promise((res) => setTimeout(res, 5));
    }
  };

  it("lists install/update and the catalog source", async () => {
    const { body } = await request("GET", "/api/ai-tools");
    const codex = body.tools.find((t) => t.id === "codex");
    assert.deepEqual(codex.install, { kind: "npm", package: "@openai/codex" });
    assert.deepEqual(codex.update, { kind: "self", args: ["update"] }); // standalone or npm
    assert.equal(body.catalog.source, "builtin");
  });

  it("starts an install job and reports it", async () => {
    jobs.__reset();
    assert.equal((await request("GET", "/api/ai-tools/job")).body, null);
    const r = await request("POST", "/api/ai-tools/copilot/install");
    assert.equal(r.status, 202);
    assert.equal(r.body.job.tool, "copilot");
    const done = await settle();
    assert.equal(done.status, "ok");
    assert.deepEqual(spawned.at(-1), [
      path.join(BIN, "npm"),
      "install",
      "-g",
      "@github/copilot@latest",
    ]);
  });

  it("maps refusals to statuses", async () => {
    jobs.__reset();
    assert.equal((await request("POST", "/api/ai-tools/nope/install")).status, 404);
    const noInstall = await request("POST", "/api/ai-tools/antigravity/install");
    assert.equal(noInstall.status, 400);
    assert.equal(noInstall.body.error.code, "ENOINSTALL");
    const notInstalled = await request("POST", "/api/ai-tools/codex/update");
    assert.equal(notInstalled.status, 409);
    assert.equal(notInstalled.body.error.code, "ENOTINSTALLED");
    // opencode was put on PATH by the refresh test, outside any npm prefix.
    const notNpm = await request("POST", "/api/ai-tools/opencode/update");
    assert.equal(notNpm.status, 409);
    assert.equal(notNpm.body.error.code, "ENOTNPM");
    const cross = await request("POST", "/api/ai-tools/copilot/install", undefined, {
      Origin: "https://evil.test",
    });
    assert.equal(cross.status, 403);
  });

  it("answers EBUSY while a job runs", async () => {
    jobs.__reset({ timeoutMs: 50 });
    hang = true;
    assert.equal((await request("POST", "/api/ai-tools/copilot/install")).status, 202);
    const busy = await request("POST", "/api/ai-tools/amp/install");
    assert.equal(busy.status, 409);
    assert.equal(busy.body.error.code, "EBUSY");
    await settle();
    hang = false;
  });

  it("update-all runs claude's own updater; versions lists npm tools", async () => {
    jobs.__reset();
    const r = await request("POST", "/api/ai-tools/update-all");
    assert.equal(r.status, 202);
    await settle();
    assert.deepEqual(spawned.at(-1), [path.join(BIN, "claude"), "update"]);
    const v = await request("GET", "/api/ai-tools/versions");
    assert.equal(v.status, 200);
    assert.equal(v.body.opencode.npmManaged, false);
  });

  it("update-all answers ENOTHING when nothing has an update", async () => {
    jobs.__reset();
    await request("PUT", "/api/ai-tools/claude", { enabled: true });
    fs.renameSync(path.join(BIN, "claude"), path.join(BIN, "claude.off"));
    try {
      await request("POST", "/api/ai-tools/refresh");
      const r = await request("POST", "/api/ai-tools/update-all");
      assert.equal(r.status, 400);
      assert.equal(r.body.error.code, "ENOTHING");
    } finally {
      fs.renameSync(path.join(BIN, "claude.off"), path.join(BIN, "claude"));
      await request("POST", "/api/ai-tools/refresh");
    }
  });

  it("refresh drops the cached versions", async () => {
    const versions = require("../lib/ai-tool-versions");
    let calls = 0;
    versions.__setExec(async () => {
      calls++;
      return { stdout: "" };
    });
    try {
      await request("GET", "/api/ai-tools/versions");
      const before = calls;
      await request("GET", "/api/ai-tools/versions");
      assert.equal(calls, before, "second read is cached");
      await request("POST", "/api/ai-tools/refresh");
      await request("GET", "/api/ai-tools/versions");
      assert.ok(calls > before, "a read after Refresh recomputes");
    } finally {
      versions.__setExec(null);
    }
  });

  it("answers 204 for a tool without an icon and 404 for an unknown id", async () => {
    const origFetch = globalThis.fetch;
    globalThis.fetch = async () => {
      throw new Error("offline");
    };
    try {
      const r = await origFetch(`${base}/api/ai-tools/claude/icon`);
      assert.equal(r.status, 204);
      assert.equal((await origFetch(`${base}/api/ai-tools/nope/icon`)).status, 404);
    } finally {
      globalThis.fetch = origFetch;
    }
  });
});