#!/usr/bin/env node
import assert from "node:assert/strict";
import fs from "node:fs/promises";
import os from "node:os";
import path from "node:path";
import { spawn } from "node:child_process";
import { execFile as execFileCallback } from "node:child_process";
import { promisify } from "node:util";
import { fileURLToPath } from "node:url";

const execFile = promisify(execFileCallback);
const rootDir = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
const taskBaseCommit = "3307f7916220b74a8e7d0d8e8b2b12f888d0632a";
const sourceStateFile = path.join(rootDir, "data", "boss-state.json");

async function createSeededRuntime(root, runtimeName) {
  const runtimeDir = await fs.mkdtemp(path.join(os.tmpdir(), runtimeName));
  const stateFile = path.join(runtimeDir, "data", "boss-state.json");
  await fs.mkdir(path.join(runtimeDir, "data", "uploads"), { recursive: true });
  await fs.mkdir(path.join(runtimeDir, "public", "downloads"), { recursive: true });
  const state = JSON.parse(await fs.readFile(sourceStateFile, "utf8"));
  await fs.writeFile(stateFile, JSON.stringify(state, null, 2), "utf8");
  return { runtimeDir, stateFile };
}

function parseCookieValue(setCookieHeader, cookieName) {
  assert.ok(setCookieHeader, "set-cookie header is missing");
  const match = setCookieHeader.match(new RegExp(`${cookieName}=([^;]+)`));
  assert.ok(match, `${cookieName} cookie is missing`);
  return match[1];
}

async function waitForServer(baseUrl, child, getServerLogs) {
  for (let attempt = 0; attempt < 60; attempt += 1) {
    if (child.exitCode !== null) {
      throw new Error(`SERVER_EXITED_EARLY:${child.exitCode}:${getServerLogs()}`);
    }
    try {
      const response = await fetch(`${baseUrl}/api/health`);
      if (response.ok) {
        return;
      }
    } catch {
      // keep waiting
    }
    await new Promise((resolve) => setTimeout(resolve, 500));
  }
  throw new Error(`SERVER_START_TIMEOUT:${getServerLogs()}`);
}

async function startStandaloneServer(appRoot, runtimeDir, port) {
  const baseUrl = `http://127.0.0.1:${port}`;
  let logs = "";
  const child = spawn("node", [".next/standalone/server.js"], {
    cwd: appRoot,
    env: {
      ...process.env,
      PORT: String(port),
      HOSTNAME: "127.0.0.1",
      BOSS_PUBLIC_BASE_URL: baseUrl,
      BOSS_RUNTIME_ROOT: runtimeDir,
      BOSS_STATE_FILE: path.join(runtimeDir, "data", "boss-state.json"),
      BOSS_AUTH_AUTO_LOGIN: "0",
    },
    stdio: ["ignore", "pipe", "pipe"],
  });

  child.stdout.on("data", (chunk) => {
    logs += chunk.toString();
  });
  child.stderr.on("data", (chunk) => {
    logs += chunk.toString();
  });

  await waitForServer(baseUrl, child, () => logs);
  return {
    baseUrl,
    child,
    getLogs: () => logs,
    async stop() {
      if (child.exitCode === null) {
        child.kill("SIGTERM");
        await new Promise((resolve) => setTimeout(resolve, 500));
      }
    },
  };
}

async function loginAsAdmin(baseUrl) {
  const response = await fetch(`${baseUrl}/api/auth/login`, {
    method: "POST",
    headers: {
      "content-type": "application/json",
    },
    body: JSON.stringify({
      account: "17600003315",
      password: "boss123456",
      method: "password",
    }),
  });
  assert.equal(response.status, 200, "login should succeed");
  const payload = await response.json();
  assert.equal(payload.ok, true, "login payload should be ok");
  const cookie = parseCookieValue(response.headers.get("set-cookie"), "boss_session");
  return { cookie, payload };
}

async function uploadAttachment(baseUrl, cookie, projectId, fileName, type, bytes) {
  const form = new FormData();
  form.set("file", new File([bytes], fileName, { type }));

  const response = await fetch(`${baseUrl}/api/v1/projects/${projectId}/attachments`, {
    method: "POST",
    headers: {
      cookie: `boss_session=${cookie}`,
    },
    body: form,
  });
  assert.equal(response.status, 200, `upload ${fileName} should succeed`);
  return response.json();
}

async function analyzeAttachment(baseUrl, cookie, projectId, attachmentId) {
  const response = await fetch(`${baseUrl}/api/v1/projects/${projectId}/attachments/${attachmentId}/analyze`, {
    method: "POST",
    headers: {
      cookie: `boss_session=${cookie}`,
    },
  });
  assert.equal(response.status, 200, "manual analyze should succeed");
  return response.json();
}

async function verifyHistoricalPrecheck() {
  const worktreePath = await fs.mkdtemp(path.join(os.tmpdir(), "boss-attachment-precheck-"));
  let server;
  try {
    await execFile("git", ["worktree", "add", "--detach", worktreePath, taskBaseCommit], {
      cwd: rootDir,
      maxBuffer: 32 * 1024 * 1024,
    });
    await execFile("npm", ["ci", "--ignore-scripts", "--no-audit", "--no-fund"], {
      cwd: worktreePath,
      env: process.env,
      maxBuffer: 32 * 1024 * 1024,
    });
    await execFile("npm", ["run", "build"], {
      cwd: worktreePath,
      env: process.env,
      maxBuffer: 32 * 1024 * 1024,
    });

    const { runtimeDir } = await createSeededRuntime(worktreePath, "boss-attachment-precheck-");
    server = await startStandaloneServer(worktreePath, runtimeDir, 3115);
    const { cookie } = await loginAsAdmin(server.baseUrl);
    const response = await fetch(`${server.baseUrl}/api/v1/projects/master-agent/attachments/att-missing/analyze`, {
      method: "POST",
      headers: {
        cookie: `boss_session=${cookie}`,
      },
    });
    assert.notEqual(response.status, 200, "pre-implementation analyze route should not succeed");
  } finally {
    await server?.stop();
    await execFile("git", ["worktree", "remove", "--force", worktreePath], {
      cwd: rootDir,
      maxBuffer: 32 * 1024 * 1024,
    }).catch(() => undefined);
    await fs.rm(worktreePath, { recursive: true, force: true });
  }
}

await verifyHistoricalPrecheck();

const { runtimeDir } = await createSeededRuntime(rootDir, "boss-attachment-current-");
const currentServer = await startStandaloneServer(rootDir, runtimeDir, 3116);

try {
  const { cookie } = await loginAsAdmin(currentServer.baseUrl);

  const textUpload = await uploadAttachment(
    currentServer.baseUrl,
    cookie,
    "master-agent",
    "analysis-note.txt",
    "text/plain",
    Buffer.from("text attachment for automatic analysis"),
  );
  assert.equal(textUpload.attachment.analysisState, "queued_auto", "text attachment should queue automatically");
  assert.ok(textUpload.analysisTask, "queued auto attachment should create a master agent task");
  assert.equal(
    textUpload.analysisTask.taskType,
    "attachment_analysis",
    "queued task type should be attachment_analysis",
  );
  assert.equal(
    textUpload.analysisTask.attachmentFileName,
    "analysis-note.txt",
    "queued task should carry attachment file name",
  );
  assert.ok(textUpload.analysisTask.attachmentDownloadUrl, "queued task should expose attachment download url");
  const promptDownloadUrlMatch = textUpload.analysisTask.executionPrompt.match(/downloadUrl:\s+(http[^\s]+)/);
  assert.ok(promptDownloadUrlMatch, "execution prompt should include attachment download url");
  const unauthDownloadResponse = await fetch(textUpload.analysisTask.attachmentDownloadUrl);
  assert.equal(unauthDownloadResponse.status, 200, "attachment download url should be readable with task token");
  assert.equal(
    await unauthDownloadResponse.text(),
    "text attachment for automatic analysis",
    "downloaded attachment content should match the uploaded text",
  );

  const manualUpload = await uploadAttachment(
    currentServer.baseUrl,
    cookie,
    "master-agent",
    "manual-binary.bin",
    "application/octet-stream",
    Buffer.from([0, 1, 2, 3]),
  );
  assert.equal(
    manualUpload.attachment.analysisState,
    "ready_manual",
    "binary attachment should be manually analyzable",
  );

  const analyzePayload = await analyzeAttachment(
    currentServer.baseUrl,
    cookie,
    "master-agent",
    manualUpload.attachment.attachmentId,
  );
  assert.ok(analyzePayload.taskId, "manual analyze should return a taskId");
  assert.ok(analyzePayload.task, "manual analyze should return a task payload");
  assert.equal(
    analyzePayload.task.taskType,
    "attachment_analysis",
    "manual analyze task should be attachment_analysis",
  );
  assert.equal(
    analyzePayload.task.attachmentId,
    manualUpload.attachment.attachmentId,
    "manual task should link the attachment",
  );

  console.log("attachment analysis validation passed");
} finally {
  await currentServer.stop();
  await fs.rm(runtimeDir, { recursive: true, force: true });
}