/**
 * @file GET /api/sessions/:id/transcript for a Codex session: the conversation
 * comes from the session's own rollout journal (`codex_rollouts`, root thread),
 * mapped to the Claude transcript shape — user/assistant text, reasoning
 * summaries as thinking, function and custom tool calls with their outputs,
 * sub-agent messages as system — with the harness's developer messages and
 * injected context (AGENTS.md, environment_context) left out.
 * @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-codex-transcript-"));
process.env.DASHBOARD_DB_PATH = path.join(TMP, "dashboard.db");
process.env.CLAUDE_HOME = path.join(TMP, "claude");
process.env.CODEX_HOME = path.join(TMP, "codex");

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

const ID = "01a10b66-ced6-7f30-af72-18e8a77e11f9";
let server;
let BASE;

const item = (ts, payload) => ({ timestamp: ts, type: "response_item", payload });
const text = (t, kind = "input_text") => ({ type: kind, text: t });

before(async () => {
  const file = path.join(TMP, "codex", "sessions", "2026", "10", "05", `rollout-x-${ID}.jsonl`);
  fs.mkdirSync(path.dirname(file), { recursive: true });
  const lines = [
    { timestamp: "2026-10-05T09:30:49Z", type: "session_meta", payload: { id: ID, cwd: "/w" } },
    item("2026-10-05T09:30:52Z", {
      type: "message",
      role: "developer",
      content: [text("<permissions instructions>…")],
    }),
    item("2026-10-05T09:30:52Z", {
      type: "message",
      role: "user",
      content: [
        text("# AGENTS.md instructions for /w\n…"),
        text("<environment_context>\n  <cwd>/w</cwd>"),
      ],
    }),
    item("2026-10-05T09:30:53Z", { type: "message", role: "user", content: [text("Hi")] }),
    item("2026-10-05T09:30:54Z", {
      type: "reasoning",
      summary: [{ type: "summary_text", text: "Greet back" }],
    }),
    item("2026-10-05T09:30:54Z", { type: "reasoning", summary: [], encrypted_content: "gAAA" }),
    item("2026-10-05T09:30:54Z", {
      type: "function_call",
      name: "exec_command",
      arguments: '{"cmd":"ls"}',
      call_id: "call_1",
    }),
    item("2026-10-05T09:30:55Z", {
      type: "function_call_output",
      call_id: "call_1",
      output: [text("Script completed\n"), text("a.txt\n")],
    }),
    item("2026-10-05T09:30:55Z", {
      type: "custom_tool_call",
      name: "apply_patch",
      input: "*** Begin Patch",
      call_id: "call_2",
    }),
    item("2026-10-05T09:30:55Z", {
      type: "custom_tool_call_output",
      call_id: "call_2",
      output: "Done",
    }),
    item("2026-10-05T09:30:55Z", {
      type: "message",
      role: "assistant",
      content: [text("Hi! What can I help you with?", "output_text")],
    }),
    item("2026-10-05T09:30:56Z", {
      type: "agent_message",
      author: "/root/task1",
      content: [text("Message Type: FINAL_ANSWER\nPayload: ok")],
    }),
  ];
  fs.writeFileSync(file, lines.map((l) => JSON.stringify(l)).join("\n") + "\n");
  db.prepare("INSERT INTO sessions (id, tool, status) VALUES (?, 'codex', 'completed')").run(ID);
  db.prepare("INSERT INTO codex_rollouts (path, session_id, thread_id) VALUES (?, ?, ?)").run(
    file,
    ID,
    ID
  );
  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 });
});

const get = async (q = "") => (await fetch(`${BASE}/api/sessions/${ID}/transcript${q}`)).json();

describe("Codex session transcript", () => {
  it("maps the rollout to the transcript shape, without the harness's injections", async () => {
    const body = await get();
    const shape = body.messages.map((m) => [
      m.type,
      m.sender,
      m.content.map((c) => c.type).join("+"),
    ]);
    assert.deepEqual(shape, [
      ["user", "user", "text"],
      ["assistant", "assistant", "thinking"],
      ["assistant", "assistant", "tool_use"],
      ["user", "tool", "tool_result"],
      ["assistant", "assistant", "tool_use"],
      ["user", "tool", "tool_result"],
      ["assistant", "assistant", "text"],
      ["user", "system", "text"],
    ]);
    const [hi, think, call, out, , patchOut, reply] = body.messages;
    assert.equal(hi.content[0].text, "Hi");
    assert.equal(hi.timestamp, "2026-10-05T09:30:53Z");
    assert.equal(think.content[0].text, "Greet back");
    assert.deepEqual(call.content[0], {
      type: "tool_use",
      name: "exec_command",
      id: "call_1",
      input: { cmd: "ls" },
    });
    assert.deepEqual(out.content[0], {
      type: "tool_result",
      id: "call_1",
      output: "Script completed\na.txt\n",
      is_error: false,
    });
    assert.equal(patchOut.content[0].output, "Done");
    assert.equal(reply.content[0].text, "Hi! What can I help you with?");
    assert.equal(body.total, 8);
  });

  it("pages like a Claude transcript (limit, after, before)", async () => {
    const latest = await get("?limit=2");
    assert.equal(latest.messages.length, 2);
    assert.equal(latest.has_more, true);
    assert.equal(latest.messages[1].content[0].type, "text");
    const after = await get(`?after=${latest.first_line}`);
    assert.equal(after.messages.length, 1);
    const before = await get(`?before=${latest.first_line}&limit=50`);
    assert.equal(before.messages.length, 6);
  });
});