/**
 * @file ui-audit-routes.test.js
 * @description Contract tests for the read-route additions the dashboard UI audit
 * needed: batched agents by `session_ids`, exact tool-call totals on session
 * stats, session/agent labels joined onto the events list, and the
 * `awaiting`/`from`/`to` filters on the sessions list.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

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

const TEST_DB = path.join(os.tmpdir(), `ui-audit-test-${Date.now()}-${process.pid}.db`);
process.env.DASHBOARD_DB_PATH = TEST_DB;
process.env.DASHBOARD_LIVENESS_PROBE = "0";

const { createApp, startServer } = require("../index");
const { db } = require("../db");

let server;
let BASE;

async function get(p) {
  const res = await fetch(BASE + p);
  return { status: res.status, body: await res.json() };
}

before(async () => {
  server = await startServer(createApp(), 0);
  BASE = `http://127.0.0.1:${server.address().port}`;
  const s = db.prepare(
    "INSERT INTO sessions (id, name, status, cwd, started_at, awaiting_input_since) VALUES (?, ?, ?, ?, ?, ?)"
  );
  s.run("ua-1", "First", "active", "/tmp/ua", "2026-01-10T10:00:00.000Z", "2026-01-10T10:05:00Z");
  s.run("ua-2", "Second", "completed", "/tmp/ua", "2026-02-10T10:00:00.000Z", null);
  s.run("ua-3", "Third", "active", "/tmp/ua", "2026-03-10T10:00:00.000Z", null);
  const a = db.prepare(
    "INSERT INTO agents (id, session_id, name, type, subagent_type) VALUES (?, ?, ?, ?, ?)"
  );
  a.run("ua-1-main", "ua-1", "Main", "main", null);
  a.run("ua-2-main", "ua-2", "Main", "main", null);
  a.run("ua-2-sub", "ua-2", "Explorer", "subagent", "Explore");
  a.run("ua-3-main", "ua-3", "Main", "main", null);
  const e = db.prepare(
    "INSERT INTO events (session_id, agent_id, event_type, tool_name) VALUES (?, ?, ?, ?)"
  );
  // ua-1: 20 distinct tools, one PreToolUse + one PostToolUse each.
  for (let i = 0; i < 20; i++) {
    e.run("ua-1", "ua-1-main", "PreToolUse", `Tool${i}`);
    e.run("ua-1", "ua-1-main", "PostToolUse", `Tool${i}`);
  }
  // ua-2: imported shape, PostToolUse only.
  e.run("ua-2", "ua-2-sub", "PostToolUse", "Read");
  e.run("ua-2", "ua-2-sub", "PostToolUse", "Read");
});

after(() => {
  if (server) server.close();
  if (db) db.close();
  for (const f of [TEST_DB, TEST_DB + "-wal", TEST_DB + "-shm"]) {
    try {
      fs.unlinkSync(f);
    } catch {
      // ignore
    }
  }
});

describe("GET /api/agents?session_ids=", () => {
  it("returns every agent of the named sessions in one call", async () => {
    const { status, body } = await get("/api/agents?session_ids=ua-1,ua-2");
    assert.equal(status, 200);
    assert.deepEqual(body.agents.map((a) => a.id).sort(), ["ua-1-main", "ua-2-main", "ua-2-sub"]);
  });
  it("an empty list returns no agents", async () => {
    const { body } = await get("/api/agents?session_ids=");
    assert.deepEqual(body.agents, []);
  });
});

describe("GET /api/sessions/:id/stats tool totals", () => {
  it("counts every PreToolUse, not the top-15 list", async () => {
    const { body } = await get("/api/sessions/ua-1/stats");
    assert.equal(body.tools_used.length, 15);
    assert.equal(body.tool_call_count, 20);
    assert.equal(body.distinct_tool_count, 20);
  });
  it("falls back to PostToolUse when a session has no PreToolUse", async () => {
    const { body } = await get("/api/sessions/ua-2/stats");
    assert.equal(body.tool_call_count, 2);
    assert.equal(body.distinct_tool_count, 1);
  });
});

describe("GET /api/events labels", () => {
  it("joins session name/cwd and agent name/type onto each row", async () => {
    const { body } = await get("/api/events?session_id=ua-2");
    assert.equal(body.total, 2);
    const ev = body.events[0];
    assert.equal(ev.session_name, "Second");
    assert.equal(ev.session_cwd, "/tmp/ua");
    assert.equal(ev.agent_name, "Explorer");
    assert.equal(ev.agent_subagent_type, "Explore");
  });
});

describe("GET /api/sessions filters", () => {
  it("awaiting=1 keeps only active sessions waiting on the user", async () => {
    const { body } = await get("/api/sessions?awaiting=1&q=ua-");
    assert.deepEqual(
      body.sessions.map((s) => s.id),
      ["ua-1"]
    );
    assert.equal(body.total, 1);
  });
  it("from/to bound started_at", async () => {
    const { body } = await get(
      "/api/sessions?q=ua-&from=2026-02-01T00:00:00Z&to=2026-02-28T23:59:59Z"
    );
    assert.deepEqual(
      body.sessions.map((s) => s.id),
      ["ua-2"]
    );
  });
});