/**
 * Batch-import SMS wallets for many sold versions from a targets JSON file.
 *
 * Each target is one Khanegi/Hamkar MySQL (one sold version). Never share one
 * DB/env across multiple domains on the same host.
 *
 *   SMS_IMPORT_TARGETS=./prisma/khanegi-sms-targets.example.json \
 *   SMS_IMPORT_DRY_RUN=1 \
 *   npm run prisma:import-sms-batch
 *
 * Target shape:
 * [
 *   {
 *     "domain": "example.ir",
 *     "product": "khanegi",
 *     "pilot": true,
 *     "db": { "host": "127.0.0.1", "port": 3306, "user": "u", "password": "p", "database": "db" }
 *   }
 * ]
 */
import * as fs from 'fs';
import * as path from 'path';
import { spawnSync } from 'child_process';

type DbTarget = {
  host?: string;
  port?: number | string;
  user?: string;
  password?: string;
  database: string;
};

type ImportTarget = {
  domain: string;
  product?: 'khanegi' | 'hamkar';
  pilot?: boolean;
  skip?: boolean;
  db: DbTarget;
};

function env(name: string, fallback = '') {
  return String(process.env[name] ?? fallback).trim();
}

function loadTargets(filePath: string): ImportTarget[] {
  const abs = path.resolve(filePath);
  if (!fs.existsSync(abs)) {
    throw new Error(`Targets file not found: ${abs}`);
  }
  const raw = JSON.parse(fs.readFileSync(abs, 'utf8')) as ImportTarget[];
  if (!Array.isArray(raw)) throw new Error('Targets JSON must be an array');
  return raw;
}

function main() {
  const targetsPath =
    env('SMS_IMPORT_TARGETS') ||
    path.join(__dirname, 'khanegi-sms-targets.example.json');
  const dryRun = env('SMS_IMPORT_DRY_RUN') === '1';
  const onlyPilot = env('SMS_IMPORT_ONLY_PILOT') === '1';
  const onlyDomain = env('SMS_IMPORT_DOMAIN');

  let targets = loadTargets(targetsPath).filter((t) => !t.skip);
  if (onlyPilot) targets = targets.filter((t) => t.pilot);
  if (onlyDomain) {
    targets = targets.filter(
      (t) => t.domain.toLowerCase() === onlyDomain.toLowerCase(),
    );
  }

  if (!targets.length) {
    console.error('No targets to import.');
    process.exitCode = 1;
    return;
  }

  console.log(
    JSON.stringify(
      {
        targetsPath,
        dryRun,
        onlyPilot,
        onlyDomain: onlyDomain || null,
        count: targets.length,
        domains: targets.map((t) => t.domain),
      },
      null,
      2,
    ),
  );

  const script = path.join(__dirname, 'import-sms-from-product.ts');
  let failed = 0;

  for (const target of targets) {
    const product = target.product || 'khanegi';
    const db = target.db || ({} as DbTarget);
    if (!db.database) {
      console.error(`SKIP ${target.domain}: missing db.database`);
      failed += 1;
      continue;
    }

    const childEnv = {
      ...process.env,
      SMS_IMPORT_DOMAIN: target.domain,
      SMS_IMPORT_PRODUCT: product,
      SMS_IMPORT_DRY_RUN: dryRun ? '1' : env('SMS_IMPORT_DRY_RUN'),
      SMS_IMPORT_DB_HOST: String(db.host || '127.0.0.1'),
      SMS_IMPORT_DB_PORT: String(db.port || 3306),
      SMS_IMPORT_DB_USER: String(db.user || 'root'),
      SMS_IMPORT_DB_PASSWORD: String(db.password ?? ''),
      SMS_IMPORT_DB_DATABASE: String(db.database),
    };

    console.log(`\n=== ${dryRun ? 'DRY ' : ''}IMPORT ${target.domain} (${product}) ===`);
    const result = spawnSync(
      process.platform === 'win32' ? 'npx.cmd' : 'npx',
      ['ts-node', '--transpile-only', script],
      {
        env: childEnv,
        cwd: path.join(__dirname, '..'),
        stdio: 'inherit',
        shell: process.platform === 'win32',
      },
    );

    if (result.status !== 0) {
      failed += 1;
      console.error(`FAILED: ${target.domain} (exit ${result.status})`);
    }
  }

  console.log(`\nDone. failed=${failed} / total=${targets.length}`);
  if (failed) process.exitCode = 1;
}

main();