#!/usr/bin/env node
import assert from "node:assert/strict";
import http from "node:http";
import https from "node:https";

import {
  handleCodeAgentChat,
  validateCodeAgentChatSchema
} from "../internal/cloud/code-agent-chat.mjs";
import {
  classifyCodeAgentChatReadiness,
  isHttpNon2xxStatus,
  summarizeCodeAgentPayload
} from "./src/code-agent-response-contract.mjs";

const defaultLiveUrl = "http://74.48.78.17:16666/";
const defaultLiveMessage = "请用一句话回复 HWLAB Code Agent readiness。";

const args = parseArgs(process.argv.slice(2));

if (args.mode === "help") {
  process.stdout.write(`${JSON.stringify(usage(), null, 2)}\n`);
} else if (args.mode === "live") {
  const report = await runLiveReadinessSmoke(args);
  process.stdout.write(`${JSON.stringify(report, null, 2)}\n`);
  process.exitCode = report.status === "pass" ? 0 : 2;
} else {
  await runLocalContractSmoke();
}

function logOk(name) {
  process.stdout.write(`[code-agent-chat-smoke] ok ${name}\n`);
}

async function runLocalContractSmoke() {
  const completed = await handleCodeAgentChat(
    {
      conversationId: "cnv_code-agent-chat-smoke",
      traceId: "trc_code-agent-chat-smoke",
      projectId: "prj_code-agent-chat-smoke",
      message: "请用一句话说明当前 HWLAB 工作台可以做什么。"
    },
    {
      now: () => "2026-05-22T00:00:00.000Z",
      callProvider: async ({ providerPlan }) => ({
        provider: providerPlan.provider,
        model: providerPlan.model,
        backend: providerPlan.backend,
        content: "HWLAB 工作台可以用 Code Agent 对话来整理任务、查看资源并保持硬件变更受控。",
        usage: null,
        providerTrace: {
          source: "schema-smoke-provider"
        }
      })
    }
  );

  validateCodeAgentChatSchema(completed);
  assert.equal(completed.conversationId, "cnv_code-agent-chat-smoke");
  assert.equal(completed.sessionId, "cnv_code-agent-chat-smoke");
  assert.match(completed.messageId, /^msg_/);
  assert.equal(completed.status, "completed");
  assert.equal(completed.createdAt, "2026-05-22T00:00:00.000Z");
  assert.equal(completed.updatedAt, "2026-05-22T00:00:00.000Z");
  assert.equal(completed.traceId, "trc_code-agent-chat-smoke");
  assert.equal(completed.error, undefined);
  assert.match(completed.reply.content, /Code Agent/);
  logOk("completed schema");

  const sourceReadiness = classifyCodeAgentChatReadiness(completed, { realDevLive: false });
  assert.equal(sourceReadiness.status, "blocked");
  assert.equal(sourceReadiness.level, "SOURCE");
  assert.equal(sourceReadiness.devLiveReplyPass, false);
  logOk("local stub completion is not #143 DEV-LIVE pass");

  const echoReadiness = classifyCodeAgentChatReadiness({
    ...completed,
    provider: "echo-mock",
    model: "mock-model",
    backend: "hwlab-cloud-api/echo-mock"
  }, { realDevLive: true, httpStatus: 200 });
  assert.equal(echoReadiness.status, "blocked");
  assert.equal(echoReadiness.level, "BLOCKED/untrusted-completion");
  assert.equal(echoReadiness.blocker, "untrusted-completion");
  assert.equal(echoReadiness.devLiveReplyPass, false);
  assert.match(echoReadiness.reason, /echo\/mock\/stub/u);
  logOk("echo/mock completion is not real DEV-LIVE pass");

  const failed = await handleCodeAgentChat(
    {
      traceId: "trc_code-agent-chat-smoke-failed",
      message: "你好"
    },
    {
      now: () => "2026-05-22T00:01:00.000Z",
      env: {
        PATH: "",
        HWLAB_CODE_AGENT_PROVIDER: "codex-cli",
        HWLAB_CODE_AGENT_MODEL: "gpt-test"
      }
    }
  );

  validateCodeAgentChatSchema(failed);
  assert.match(failed.conversationId, /^cnv_/);
  assert.match(failed.sessionId, /^cnv_/);
  assert.match(failed.messageId, /^msg_/);
  assert.equal(failed.status, "failed");
  assert.equal(failed.createdAt, "2026-05-22T00:01:00.000Z");
  assert.equal(failed.updatedAt, "2026-05-22T00:01:00.000Z");
  assert.equal(failed.traceId, "trc_code-agent-chat-smoke-failed");
  assert.equal(failed.provider, "codex-cli");
  assert.equal(failed.model, "gpt-test");
  assert.equal(failed.backend, "hwlab-cloud-api/codex-cli");
  assert.equal(failed.error.code, "provider_unavailable");
  assert.match(failed.error.message, /Codex CLI command is not available/);
  assert.deepEqual(failed.error.missingCommands, ["codex"]);
  assert.ok(failed.error.missingEnv.includes("OPENAI_API_KEY"));
  assert.equal(failed.availability.status, "blocked");
  assert.match(failed.availability.blocker, /凭证缺口|OPENAI_API_KEY/u);
  assert.equal(failed.availability.reason, "provider_unavailable");
  assert.match(failed.availability.summary, /真实后端已接入/u);
  assert.match(failed.availability.summary, /hwlab-code-agent-provider\/openai-api-key/u);
  assert.equal(JSON.stringify(failed).includes("sk-"), false);
  assert.equal(Object.hasOwn(failed, "reply"), false);
  logOk("failed provider-gap schema");

  const credentialReadiness = classifyCodeAgentChatReadiness(failed, { realDevLive: true });
  assert.equal(credentialReadiness.status, "blocked");
  assert.equal(credentialReadiness.level, "BLOCKED/credential");
  assert.equal(credentialReadiness.blocker, "credential");
  assert.equal(credentialReadiness.devLiveReplyPass, false);
  logOk("provider credential blocker readiness");

  const upstreamBlocked = classifyCodeAgentChatReadiness({
    ...failed,
    error: {
      code: "provider_unavailable",
      message: "OpenAI Responses returned HTTP 502: request rejected",
      providerStatus: 502,
      missingEnv: []
    },
    availability: {
      status: "available"
    }
  }, { realDevLive: true, httpStatus: 200 });
  assert.equal(upstreamBlocked.status, "blocked");
  assert.equal(upstreamBlocked.level, "BLOCKED/provider");
  assert.equal(upstreamBlocked.blocker, "provider-upstream");
  assert.equal(upstreamBlocked.providerStatus, 502);
  assert.equal(upstreamBlocked.devLiveReplyPass, false);
  logOk("provider 502 blocker readiness");

  const completedLivePayload = {
    ...completed,
    provider: "openai-responses",
    model: "gpt-5.5",
    backend: "hwlab-cloud-api/openai-responses"
  };
  const completedHttp200Readiness = classifyCodeAgentChatReadiness(completedLivePayload, { realDevLive: true, httpStatus: 200 });
  assert.equal(completedHttp200Readiness.status, "pass");
  assert.equal(completedHttp200Readiness.devLiveReplyPass, true);
  logOk("HTTP 200 completion-looking payload can pass");

  for (const status of [400, 401, 403, 429, 500, 502, 503, 504]) {
    const readiness = classifyCodeAgentChatReadiness(completedLivePayload, { realDevLive: true, httpStatus: status });
    assert.equal(readiness.status, "blocked", `HTTP ${status} must block`);
    assert.equal(readiness.blocker, "provider-upstream", `HTTP ${status} blocker`);
    assert.equal(readiness.providerStatus, status, `HTTP ${status} providerStatus`);
    assert.equal(readiness.devLiveReplyPass, false, `HTTP ${status} devLiveReplyPass`);
    assert.match(readiness.reason, /HTTP non-2xx|upstream response/u, `HTTP ${status} reason`);
  }
  logOk("non-2xx completion-looking payloads are blocked");

  process.stdout.write("[code-agent-chat-smoke] passed\n");
}

async function runLiveReadinessSmoke(args) {
  const endpoint = agentChatEndpoint(args.url);
  const traceId = protocolId("trc_code-agent-chat-live");
  const conversationId = protocolId("cnv_code-agent-chat-live");
  let httpStatus = null;
  let payload = null;
  let transportError = null;

  try {
    const response = await postJson(endpoint, {
      headers: {
        "x-trace-id": traceId
      },
      body: {
        conversationId,
        traceId,
        projectId: "prj_hwlab-cloud-workbench",
        message: args.message
      }
    });
    httpStatus = response.status;
    payload = response.json;
  } catch (error) {
    transportError = error instanceof Error ? error.message : String(error);
  }

  const readiness = payload || isHttpNon2xxStatus(httpStatus)
    ? classifyCodeAgentChatReadiness(payload, { realDevLive: true, httpStatus })
    : {
        status: "blocked",
        level: "BLOCKED",
        blocker: "transport",
        devLiveReplyPass: false,
        reason: "real DEV /v1/agent/chat did not return a JSON Code Agent payload"
      };

  if (payload && readiness.status === "pass") {
    try {
      validateCodeAgentChatSchema(payload);
    } catch (error) {
      readiness.status = "blocked";
      readiness.level = "BLOCKED";
      readiness.blocker = "schema";
      readiness.devLiveReplyPass = false;
      readiness.reason = error instanceof Error ? error.message : String(error);
    }
  }

  return {
    status: readiness.status,
    mode: "live-readiness",
    url: endpoint.href,
    httpStatus,
    readiness,
    response: summarizePayload(payload, { httpStatus, traceId }),
    ...(transportError ? { transportError } : {}),
    safety: {
      prodTouched: false,
      servicesRestarted: false,
      readsSecretValues: false,
      printsAssistantReply: false,
      statement: "This smoke posts only to the configured DEV Code Agent chat endpoint and prints reply presence, not reply content or secret values."
    }
  };
}

function summarizePayload(payload, options = {}) {
  const responseSummary = summarizeCodeAgentPayload(payload, options);
  const assistantReply = responseSummary?.hasReply === true && typeof payload?.reply?.content === "string"
    ? payload.reply.content.trim()
    : "";
  return {
    status: responseSummary?.status ?? null,
    provider: responseSummary?.provider ?? null,
    model: responseSummary?.model ?? null,
    backend: responseSummary?.backend ?? null,
    assistantReplyNonEmpty: responseSummary?.hasReply === true,
    assistantReplyLength: assistantReply.length,
    error: responseSummary?.error ?? null
  };
}

function parseArgs(argv) {
  const parsed = { mode: "local", url: defaultLiveUrl, message: defaultLiveMessage };
  for (let index = 0; index < argv.length; index += 1) {
    const arg = argv[index];
    if (arg === "--live") {
      parsed.mode = "live";
    } else if (arg === "--url") {
      index += 1;
      if (!argv[index]) throw new Error("--url requires a value");
      parsed.url = argv[index];
    } else if (arg === "--message") {
      index += 1;
      if (!argv[index]) throw new Error("--message requires a value");
      parsed.message = argv[index];
    } else if (arg === "--help") {
      return { mode: "help" };
    } else {
      throw new Error(`unknown argument ${arg}`);
    }
  }
  return parsed;
}

function usage() {
  return {
    status: "usage",
    command: "node scripts/code-agent-chat-smoke.mjs [--live --url http://74.48.78.17:16666/]",
    notes: [
      "Default mode is local schema/readiness contract only and cannot pass #143 DEV-LIVE.",
      "--live posts a minimal chat prompt to real DEV and passes only on completed plus non-empty assistant reply.",
      "provider_unavailable with missing OPENAI_API_KEY or missing/forbidden HWLAB_CODE_AGENT_OPENAI_BASE_URL is reported as BLOCKED/provider-config."
    ]
  };
}

function agentChatEndpoint(value) {
  const url = new URL(value);
  if (url.pathname.endsWith("/v1/agent/chat")) return url;
  return new URL("/v1/agent/chat", url);
}

function postJson(url, { headers = {}, body, timeoutMs = 10000 }) {
  const client = url.protocol === "https:" ? https : http;
  const payload = JSON.stringify(body);
  return new Promise((resolve, reject) => {
    const request = client.request(
      url,
      {
        method: "POST",
        headers: {
          "content-type": "application/json",
          "content-length": Buffer.byteLength(payload),
          ...headers
        },
        insecureHTTPParser: true,
        timeout: timeoutMs
      },
      (response) => {
        const chunks = [];
        response.on("data", (chunk) => chunks.push(chunk));
        response.on("end", () => {
          const text = Buffer.concat(chunks).toString("utf8");
          resolve({
            status: response.statusCode ?? null,
            body: text,
            json: parseJsonOrNull(text)
          });
        });
      }
    );
    request.on("timeout", () => request.destroy(new Error(`request timed out after ${timeoutMs}ms`)));
    request.on("error", reject);
    request.end(payload);
  });
}

function parseJsonOrNull(value) {
  try {
    return JSON.parse(value);
  } catch {
    return null;
  }
}

function protocolId(prefix) {
  return `${prefix}_${Date.now().toString(36)}`;
}