#!/usr/bin/env node

/**
 * OmniRoute CLI entry point.
 *
 * Special bypasses (handled before Commander):
 *   --mcp                     Start MCP server over stdio
 *   reset-encrypted-columns   Recovery tool for broken encrypted credentials
 *
 * All other commands are routed through Commander (bin/cli/program.mjs).
 */

import { existsSync, readFileSync } from "node:fs";
import { join, dirname } from "node:path";
import { fileURLToPath, pathToFileURL } from "node:url";
import { homedir, platform } from "node:os";
import updateNotifier from "update-notifier";

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
const ROOT = join(__dirname, "..");

function loadEnvFile() {
  const envPaths = [];

  if (process.env.DATA_DIR) {
    envPaths.push(join(process.env.DATA_DIR, ".env"));
  }

  const home = homedir();
  if (home) {
    if (platform() === "win32") {
      const appData = process.env.APPDATA || join(home, "AppData", "Roaming");
      envPaths.push(join(appData, "omniroute", ".env"));
    } else {
      envPaths.push(join(home, ".omniroute", ".env"));
    }
  }

  envPaths.push(join(process.cwd(), ".env"));
  envPaths.push(join(ROOT, ".env"));

  for (const envPath of envPaths) {
    try {
      if (existsSync(envPath)) {
        const content = readFileSync(envPath, "utf-8");
        for (const line of content.split("\n")) {
          const trimmed = line.trim();
          if (!trimmed || trimmed.startsWith("#")) continue;
          const eqIdx = trimmed.indexOf("=");
          if (eqIdx > 0) {
            const key = trimmed.slice(0, eqIdx).trim();
            const value = trimmed.slice(eqIdx + 1).trim();
            if (process.env[key] === undefined) {
              process.env[key] = value.replace(/^["']|["']$/g, "");
            }
          }
        }
        console.log(`  \x1b[2m📋 Loaded env from ${envPath}\x1b[0m`);
        return;
      }
    } catch {
      // Ignore errors reading env files.
    }
  }
}

loadEnvFile();

// Generate STORAGE_ENCRYPTION_KEY if not set (persisted to ~/.omniroute/.env)
// This ensures the key survives across upgrades and is not regenerated on each install.
// See: https://github.com/diegosouzapw/OmniRoute/issues/1622
{
  const { randomBytes } = await import("node:crypto");
  const { existsSync, mkdirSync, readFileSync, writeFileSync } = await import("node:fs");
  const { join } = await import("node:path");
  const { homedir } = await import("node:os");

  if (!process.env.STORAGE_ENCRYPTION_KEY) {
    const dataDir = join(homedir(), ".omniroute");
    const envPath = join(dataDir, ".env");

    // Ensure data directory exists
    if (!existsSync(dataDir)) {
      mkdirSync(dataDir, { recursive: true });
    }

    const key = randomBytes(32).toString("hex");

    // Read existing .env content or start fresh
    let content = "";
    if (existsSync(envPath)) {
      content = readFileSync(envPath, "utf-8");
    }

    // Append key if not already present
    if (!content.includes("STORAGE_ENCRYPTION_KEY=")) {
      const separator = content.trim() ? "\n" : "";
      const newContent = content.trimEnd() + separator + `STORAGE_ENCRYPTION_KEY=${key}`;
      writeFileSync(envPath, newContent + "\n", "utf-8");
      console.log(
        "  \x1b[2m✨ Generated STORAGE_ENCRYPTION_KEY in ~/.omniroute/.env\x1b[0m"
      );
    }

    // Set in process.env for immediate use
    process.env.STORAGE_ENCRYPTION_KEY = key;
  }
}

// Apply --lang before Commander parses (program descriptions call t() during setup)
{
  const langIdx = process.argv.findIndex((a) => a === "--lang");
  const langArg = langIdx >= 0 ? process.argv[langIdx + 1] : null;
  const langEnv = process.env.OMNIROUTE_LANG;
  const chosen = langArg || langEnv;
  if (chosen) {
    const { setLocale } = await import(
      pathToFileURL(join(ROOT, "bin", "cli", "i18n.mjs")).href
    );
    setLocale(chosen);
  }
}

// Register update notifier — checks npm once per 24h, notifies on exit via stderr.
const _pkg = JSON.parse(readFileSync(join(ROOT, "package.json"), "utf8"));
const _notifier = updateNotifier({ pkg: _pkg, updateCheckInterval: 1000 * 60 * 60 * 24 });
process.on("exit", () => {
  if (process.env.OMNIROUTE_NO_UPDATE_NOTIFIER) return;
  if (process.env.CI) return;
  if (process.argv.includes("--quiet") || process.argv.includes("-q")) return;
  const outputIdx = process.argv.indexOf("--output");
  const outputVal = outputIdx >= 0 ? process.argv[outputIdx + 1] : null;
  if (outputVal === "json" || outputVal === "jsonl" || outputVal === "csv") return;
  if (process.argv.some((a) => a.startsWith("--output=json") || a.startsWith("--output=jsonl") || a.startsWith("--output=csv"))) return;
  if (_notifier.update) {
    _notifier.notify({
      defer: false,
      isGlobal: true,
      message:
        `Update available: ${_notifier.update.current} → ${_notifier.update.latest}\n` +
        "Run `npm install -g omniroute` or `omniroute update --apply`",
    });
  }
});

if (process.argv.includes("--mcp")) {
  try {
    const { startMcpCli } = await import(pathToFileURL(join(ROOT, "bin", "mcp-server.mjs")).href);
    await startMcpCli(ROOT);
  } catch (err) {
    console.error("\x1b[31m✖ Failed to start MCP server:\x1b[0m", err.message || err);
    process.exit(1);
  }
  process.exit(0);
}

if (process.argv.includes("reset-encrypted-columns")) {
  const { runResetEncryptedColumns } = await import(
    pathToFileURL(join(ROOT, "bin", "cli", "commands", "reset-encrypted-columns.mjs")).href
  );
  const exitCode = await runResetEncryptedColumns(process.argv.slice(2));
  process.exit(exitCode ?? 0);
}

try {
  const { createProgram } = await import(
    pathToFileURL(join(ROOT, "bin", "cli", "program.mjs")).href
  );
  const program = createProgram();
  await program.parseAsync(process.argv);
} catch (err) {
  if (err.exitCode !== undefined) process.exit(err.exitCode);
  console.error("\x1b[31m✖", err.message, "\x1b[0m");
  process.exit(1);
}