/**
 * Apply Niazi-style modular brand colors to Khanegi tenants
 * that are NOT locked newTheme (Aygin, new.gholaktala.ir, …).
 *
 * Colors (from app.niazitala.ir):
 *   primary   #0a1b37  (هدر)
 *   secondary #e0be7f  (اکسنت)
 *   background #ffffff (پس‌زمینه)
 *
 * Also forces uiVariant=modular for non-protected Khanegi rows.
 *
 * Dry-run:
 *   KHANEGI_BRAND_DRY_RUN=1 npm run prisma:bulk-khanegi-modular-brand
 *
 * Apply:
 *   npm run prisma:bulk-khanegi-modular-brand
 *
 * Optional source override:
 *   KHANEGI_BRAND_SOURCE_DOMAIN=app.niazitala.ir npm run prisma:bulk-khanegi-modular-brand
 */
import { KhanegiUiVariant, PrismaClient, ProductType } from '@prisma/client';
import { isForcedKhanegiNewTheme } from './khanegi-variant-locks';

const prisma = new PrismaClient();

const FALLBACK_BRAND = {
  primaryColor: '#0a1b37',
  secondaryColor: '#e0be7f',
  backgroundColor: '#ffffff',
};

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

function normalizeHost(value?: string | null) {
  if (!value) return '';
  return String(value)
    .trim()
    .toLowerCase()
    .replace(/^https?:\/\//, '')
    .split('/')[0]
    .split(':')[0];
}

function isProtectedNewThemeTenant(domain: string, domains: unknown, slug: string) {
  // Aygin + explicit locks (e.g. new.gholaktala.ir)
  return isForcedKhanegiNewTheme(domain, domains, slug);
}

function bumpAppVersion(current?: string | null): string {
  const v = String(current || '1').trim() || '1';
  if (/^\d+$/.test(v)) return String(Number(v) + 1);
  const semver = v.match(/^(\d+)\.(\d+)\.(\d+)$/);
  if (semver) return `${semver[1]}.${semver[2]}.${Number(semver[3]) + 1}`;
  return `${Date.now()}`;
}

async function resolveBrand() {
  const sourceDomain =
    env('KHANEGI_BRAND_SOURCE_DOMAIN', 'app.niazitala.ir') || 'app.niazitala.ir';
  const host = normalizeHost(sourceDomain);

  const tenants = await prisma.tenant.findMany({
    where: { product: ProductType.khanegi, isActive: true },
    select: {
      id: true,
      domain: true,
      domains: true,
      primaryColor: true,
      secondaryColor: true,
      backgroundColor: true,
    },
  });

  const source = tenants.find((t) => {
    const candidates = new Set<string>();
    const primary = normalizeHost(t.domain);
    if (primary) candidates.add(primary);
    const extra = Array.isArray(t.domains) ? t.domains : [];
    for (const d of extra) {
      const n = normalizeHost(String(d));
      if (n) candidates.add(n);
    }
    return candidates.has(host);
  });

  if (!source) {
    console.warn(
      `Source tenant not found for ${host}; using hardcoded Niazi palette.`,
    );
    return { ...FALLBACK_BRAND, sourceDomain: host, sourceFound: false };
  }

  return {
    primaryColor: source.primaryColor || FALLBACK_BRAND.primaryColor,
    secondaryColor: source.secondaryColor || FALLBACK_BRAND.secondaryColor,
    backgroundColor: source.backgroundColor || FALLBACK_BRAND.backgroundColor,
    sourceDomain: host,
    sourceFound: true,
    sourceId: source.id,
  };
}

async function main() {
  const dryRun = env('KHANEGI_BRAND_DRY_RUN') === '1';
  const brand = await resolveBrand();

  const tenants = await prisma.tenant.findMany({
    where: { product: ProductType.khanegi, isActive: true },
    select: {
      id: true,
      domain: true,
      domains: true,
      slug: true,
      nameFa: true,
      uiVariant: true,
      primaryColor: true,
      secondaryColor: true,
      backgroundColor: true,
      appVersion: true,
    },
    orderBy: { domain: 'asc' },
  });

  const targets = tenants.filter(
    (t) => !isProtectedNewThemeTenant(t.domain, t.domains, t.slug),
  );
  const skippedNewTheme = tenants.filter((t) =>
    isProtectedNewThemeTenant(t.domain, t.domains, t.slug),
  );

  console.log(
    JSON.stringify(
      {
        dryRun,
        brand: {
          primaryColor: brand.primaryColor,
          secondaryColor: brand.secondaryColor,
          backgroundColor: brand.backgroundColor,
          sourceDomain: brand.sourceDomain,
          sourceFound: brand.sourceFound,
        },
        totalKhanegi: tenants.length,
        targets: targets.length,
        skippedNewTheme: skippedNewTheme.map((t) => ({
          domain: t.domain,
          uiVariant: t.uiVariant,
        })),
      },
      null,
      2,
    ),
  );

  let updated = 0;
  for (const t of targets) {
    const next = {
      uiVariant: KhanegiUiVariant.modular,
      primaryColor: brand.primaryColor,
      secondaryColor: brand.secondaryColor,
      backgroundColor: brand.backgroundColor,
      appVersion: bumpAppVersion(t.appVersion),
    };

    const changed =
      t.uiVariant !== next.uiVariant ||
      t.primaryColor !== next.primaryColor ||
      t.secondaryColor !== next.secondaryColor ||
      t.backgroundColor !== next.backgroundColor;

    console.log(
      JSON.stringify({
        domain: t.domain,
        nameFa: t.nameFa,
        changed,
        before: {
          uiVariant: t.uiVariant,
          primaryColor: t.primaryColor,
          secondaryColor: t.secondaryColor,
          backgroundColor: t.backgroundColor,
          appVersion: t.appVersion,
        },
        after: next,
      }),
    );

    if (!changed || dryRun) continue;

    await prisma.tenant.update({
      where: { id: t.id },
      data: next,
    });
    updated += 1;
  }

  // Ensure locked newTheme tenants stay newTheme
  for (const t of skippedNewTheme) {
    if (t.uiVariant === KhanegiUiVariant.newTheme) continue;
    console.log(
      JSON.stringify({
        domain: t.domain,
        action: dryRun ? 'would_force_newTheme' : 'force_newTheme',
        before: t.uiVariant,
      }),
    );
    if (dryRun) continue;
    await prisma.tenant.update({
      where: { id: t.id },
      data: {
        uiVariant: KhanegiUiVariant.newTheme,
        appVersion: bumpAppVersion(t.appVersion),
      },
    });
  }

  console.log(JSON.stringify({ dryRun, updated, done: true }));
}

main()
  .catch((err) => {
    console.error(err);
    process.exitCode = 1;
  })
  .finally(async () => {
    await prisma.$disconnect();
  });