/**
 * @file GET /api/sessions/:id/transcript keeps a long conversation turn whole:
 * the chat shows an assistant's answer and a user's prompt as they were, while
 * a tool's output — the part that can be megabytes — is still capped.
 * @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("fs");
const os = require("os");
const path = require("path");

const TMP = fs.mkdtempSync(path.join(os.tmpdir(), "agenthub-long-text-"));
process.env.DASHBOARD_DB_PATH = path.join(TMP, "dashboard.db");
process.env.CLAUDE_HOME = path.join(TMP, "home");
process.env.DASHBOARD_DATA_DIR = path.join(TMP, "data");

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

const ID = "5a1e0c2e-0000-4000-8000-000000000001";
const CWD = "/w/long";
const LONG = "Câu hỏi dài. ".repeat(3000); // ~39K chars, past the old 10 KB cap
let server;
let BASE;

before(async () => {
  const file = path.join(
    process.env.CLAUDE_HOME,
    "projects",
    CWD.replace(/[^a-zA-Z0-9]/g, "-"),
    `${ID}.jsonl`
  );
  fs.mkdirSync(path.dirname(file), { recursive: true });
  const lines = [
    { type: "user", message: { role: "user", content: LONG } },
    {
      type: "assistant",
      message: {
        role: "assistant",
        content: [
          { type: "text", text: LONG },
          { type: "tool_use", id: "t1", name: "Bash", input: { command: "cat big" } },
        ],
      },
    },
    {
      type: "user",
      message: {
        role: "user",
        content: [{ type: "tool_result", tool_use_id: "t1", content: LONG }],
      },
    },
  ];
  fs.writeFileSync(file, lines.map((l) => JSON.stringify(l)).join("\n") + "\n");
  db.prepare("INSERT INTO sessions (id, status, cwd) VALUES (?, 'completed', ?)").run(ID, CWD);
  server = await startServer(createApp(), 0);
  BASE = `http://127.0.0.1:${server.address().port}`;
});

after(() => {
  server?.close();
  try {
    db.close();
  } catch {}
  fs.rmSync(TMP, { recursive: true, force: true });
});

describe("transcript long text", () => {
  it("keeps a long prompt and answer whole and still caps a tool's output", async () => {
    const body = await (await fetch(`${BASE}/api/sessions/${ID}/transcript`)).json();
    const [prompt, answer, result] = body.messages;
    assert.equal(prompt.content[0].text, LONG);
    assert.equal(answer.content[0].text, LONG);
    assert.ok(result.content[0].output.endsWith("[truncated]"));
  });
});