#!/usr/bin/env node
import fs from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";

const scriptDir = path.dirname(fileURLToPath(import.meta.url));
const platformRoot = path.resolve(scriptDir, "../..");
const monorepoRoot = path.resolve(platformRoot, "..");

const prodHosts = new Set([
  "ai-hub.nodedc.ru",
  "hub.nodedc.ru",
  "engine.nodedc.ru",
  "ops.nodedc.ru",
  "id.nodedc.ru",
  "ops-agents.nodedc.ru",
]);

const relayKeysAllowedInLocal = new Set([
  "AI_WORKSPACE_HUB_PUBLIC_URL",
  "AI_WORKSPACE_HUB_INTERNAL_URL",
  "NDC_AI_WORKSPACE_HUB_URL",
  "NDC_AI_WORKSPACE_HUB_HTTP_URL",
  "AI_WORKSPACE_ASSISTANT_ACTION_GATEWAY_URL",
  "NDC_AI_WORKSPACE_ASSISTANT_ACTION_GATEWAY_URL",
]);

const localOnlyFiles = [
  {
    file: path.join(platformRoot, "infra", ".env.example"),
    required: true,
    requiredKeys: ["NODEDC_ENV", "NODEDC_INTERNAL_ACCESS_TOKEN", "AI_WORKSPACE_HUB_PUBLIC_URL", "AI_WORKSPACE_HUB_INTERNAL_URL", "AI_WORKSPACE_ASSISTANT_ACTION_RELAY_ENABLED", "AI_WORKSPACE_ASSISTANT_ACTION_RELAY_ID"],
  },
  {
    file: path.join(platformRoot, "infra", ".env"),
    required: false,
    requiredKeys: ["NODEDC_ENV", "NODEDC_INTERNAL_ACCESS_TOKEN", "AI_WORKSPACE_HUB_PUBLIC_URL", "AI_WORKSPACE_HUB_INTERNAL_URL", "AI_WORKSPACE_ASSISTANT_ACTION_RELAY_ENABLED", "AI_WORKSPACE_ASSISTANT_ACTION_RELAY_ID"],
  },
  {
    file: path.join(monorepoRoot, "NODEDC_ENGINE_INFRA", "nodedc-source", "server", ".env.local"),
    required: false,
    requiredKeys: [
      "NODEDC_ENV",
      "NODEDC_LAUNCHER_INTERNAL_URL",
      "NODEDC_LAUNCHER_ORIGIN",
      "AUTHENTIK_PUBLIC_BASE_URL",
      "NODEDC_AI_WORKSPACE_ASSISTANT_URL",
    ],
  },
];

const failures = [];
const warnings = [];
const passes = [];

function parseEnvFile(file) {
  const env = new Map();
  const raw = fs.readFileSync(file, "utf8");
  raw.split(/\r?\n/).forEach((line, index) => {
    const trimmed = line.trim();
    if (!trimmed || trimmed.startsWith("#")) return;
    const match = /^([A-Za-z_][A-Za-z0-9_]*)=(.*)$/.exec(trimmed);
    if (!match) return;
    let value = match[2].trim();
    if (
      (value.startsWith('"') && value.endsWith('"')) ||
      (value.startsWith("'") && value.endsWith("'"))
    ) {
      value = value.slice(1, -1);
    }
    env.set(match[1], { value, line: index + 1 });
  });
  return env;
}

function urlHost(value) {
  try {
    return new URL(value).hostname.toLowerCase();
  } catch {
    return "";
  }
}

function isTunnelOrPrivateRelay(value) {
  const host = urlHost(value);
  return (
    host.endsWith(".ts.net") ||
    host.startsWith("100.") ||
    host.startsWith("172.22.") ||
    host.startsWith("192.168.") ||
    host.startsWith("10.")
  );
}

function checkLocalEnvFile({ file, required, requiredKeys }) {
  if (!fs.existsSync(file)) {
    if (required) failures.push(`${file}: missing required local env file`);
    else warnings.push(`${file}: not present, skipped`);
    return;
  }

  const env = parseEnvFile(file);
  const profile = env.get("NODEDC_ENV")?.value || "local";
  if (profile !== "local" && profile !== "tunnel-local-e2e") {
    failures.push(`${file}: expected NODEDC_ENV=local or tunnel-local-e2e, got ${profile}`);
  }

  requiredKeys.forEach((key) => {
    if (!env.get(key)?.value) failures.push(`${file}: missing required ${key}`);
  });

  for (const [key, entry] of env.entries()) {
    const value = entry.value;
    if (!/^https?:\/\//i.test(value) && !/^wss?:\/\//i.test(value)) continue;
    const host = urlHost(value);
    if (!host) continue;

    if (prodHosts.has(host) && !relayKeysAllowedInLocal.has(key)) {
      failures.push(`${file}:${entry.line}: ${key} points local profile at prod host ${host}`);
    }

    if (isTunnelOrPrivateRelay(value) && profile !== "tunnel-local-e2e") {
      failures.push(`${file}:${entry.line}: ${key} uses tunnel/private host ${host}; set NODEDC_ENV=tunnel-local-e2e explicitly or use a normal local/public-relay URL`);
    }
  }

  const hubInternal = env.get("AI_WORKSPACE_HUB_INTERNAL_URL")?.value || "";
  if (hubInternal && profile === "local") {
    const host = urlHost(hubInternal);
    const allowed = host === "ai-hub.nodedc.ru" || host === "127.0.0.1" || host === "localhost";
    if (!allowed) {
      failures.push(`${file}: AI_WORKSPACE_HUB_INTERNAL_URL must be loopback or deployed relay in local profile, got ${hubInternal}`);
    }
  }

  passes.push(`${file}: checked`);
}

localOnlyFiles.forEach(checkLocalEnvFile);

passes.forEach((item) => console.log(`PASS ${item}`));
warnings.forEach((item) => console.warn(`WARN ${item}`));
failures.forEach((item) => console.error(`FAIL ${item}`));

console.log(`summary: passed=${passes.length} warnings=${warnings.length} failed=${failures.length}`);

if (failures.length) process.exit(1);