/**
 * Seed Hamkar defaultSnapshot from users.json (original registry look).
 * Optionally restore current appearance to that snapshot (--restore).
 *
 * Usage:
 *   npx ts-node --transpile-only prisma/seed-hamkar-default-snapshots.ts
 *   npx ts-node --transpile-only prisma/seed-hamkar-default-snapshots.ts --restore
 *   npx ts-node --transpile-only prisma/seed-hamkar-default-snapshots.ts --restore --domain=montpar.ir
 */
import * as fs from 'fs';
import * as path from 'path';
import { PrismaClient, ProductType } from '@prisma/client';
import { buildHamkarUiFromBrand } from './lib/appearance-builders';

const prisma = new PrismaClient();

type SourceUser = {
  id: number;
  name?: string | null;
  name_fa?: string | null;
  domain?: string | null;
  domains?: string | string[] | null;
  api_origin?: string | null;
  mode?: string | null;
  theme?: string | null;
  color?: string | null;
  secondary_color?: string | null;
  background_color?: string | null;
  deleted_at?: string | null;
};

function parseArgs() {
  const restore = process.argv.includes('--restore');
  const domainArg = process.argv.find((a) => a.startsWith('--domain='));
  const domain = domainArg ? domainArg.slice('--domain='.length).trim().toLowerCase() : null;
  return { restore, domain };
}

function parseDomains(raw: SourceUser['domains']): string[] {
  if (!raw) return [];
  try {
    const value = typeof raw === 'string' ? JSON.parse(raw) : raw;
    if (!Array.isArray(value)) return [];
    return value
      .map((item) => String(item).trim().toLowerCase())
      .filter(Boolean)
      .map((item) => item.replace(/^https?:\/\//, '').split('/')[0]);
  } catch {
    return [];
  }
}

function primaryDomain(row: SourceUser): string | null {
  const fromField = row.domain?.trim().toLowerCase();
  if (fromField) return fromField.replace(/^https?:\/\//, '').split('/')[0];
  const fromOrigin = row.api_origin?.trim().toLowerCase();
  if (fromOrigin) return fromOrigin.replace(/^https?:\/\//, '').split('/')[0];
  const domains = parseDomains(row.domains);
  return domains[0] || null;
}

function emptyToNull(v: string | null | undefined) {
  const s = String(v ?? '').trim();
  if (!s || s === 'null' || s === 'undefined') return null;
  return s;
}

async function main() {
  const { restore, domain: onlyDomain } = parseArgs();
  const file = path.join(__dirname, 'data', 'users.json');
  if (!fs.existsSync(file)) {
    throw new Error(`Missing ${file}`);
  }

  const rows = JSON.parse(fs.readFileSync(file, 'utf8')) as SourceUser[];
  const byDomain = new Map<string, SourceUser>();
  for (const row of rows) {
    if (row.deleted_at) continue;
    const d = primaryDomain(row);
    if (!d) continue;
    if (!byDomain.has(d)) byDomain.set(d, row);
    for (const extra of parseDomains(row.domains)) {
      if (!byDomain.has(extra)) byDomain.set(extra, row);
    }
  }

  const tenants = await prisma.tenant.findMany({
    where: { product: ProductType.hamkar },
  });

  const filtered = onlyDomain
    ? tenants.filter((tenant) => {
        const keys = [
          tenant.domain?.toLowerCase(),
          ...((Array.isArray(tenant.domains) ? tenant.domains : []) as string[]).map((d) =>
            String(d).toLowerCase(),
          ),
        ];
        return keys.includes(onlyDomain);
      })
    : tenants;

  let updated = 0;
  let restored = 0;
  let skipped = 0;

  for (const tenant of filtered) {
    const domainKeys = [
      tenant.domain?.toLowerCase(),
      ...((Array.isArray(tenant.domains) ? tenant.domains : []) as string[]).map((d) =>
        String(d).toLowerCase(),
      ),
    ].filter(Boolean) as string[];

    const source =
      domainKeys.map((d) => byDomain.get(d)).find(Boolean) ||
      null;

    const noteMode =
      tenant.notes?.match(/registryMode:([^\s|]+)/)?.[1] ||
      tenant.notes?.match(/(?:^|\|)\s*mode:([^\s|]+)/)?.[1] ||
      null;

    const registryMode =
      (source?.mode && String(source.mode).trim()) ||
      (source?.theme && String(source.theme).trim()) ||
      noteMode ||
      'dynamicMode';

    const brandPrimary = emptyToNull(source?.color) ?? emptyToNull(tenant.primaryColor);
    const brandSecondary =
      emptyToNull(source?.secondary_color) ?? emptyToNull(tenant.secondaryColor);
    const brandBackground =
      emptyToNull(source?.background_color) ?? emptyToNull(tenant.backgroundColor);

    const existing =
      tenant.appUiConfig &&
      typeof tenant.appUiConfig === 'object' &&
      (tenant.appUiConfig as any).kind === 'hamkar'
        ? (tenant.appUiConfig as Record<string, any>)
        : null;

    const defaultSnapshot = {
      registryMode,
      brand: {
        primaryColor: brandPrimary,
        secondaryColor: brandSecondary,
        backgroundColor: brandBackground,
      },
      settings: {
        pricing_box_theme: String(existing?.settings?.pricing_box_theme || '1'),
        price_font_size: String(existing?.settings?.price_font_size || 'بزرگ'),
        orderUI: String(existing?.settings?.orderUI || 'old'),
      },
    };

    // Never overwrite an existing defaultSnapshot (immutable factory look)
    const keepSnapshot =
      existing?.defaultSnapshot && typeof existing.defaultSnapshot === 'object'
        ? existing.defaultSnapshot
        : defaultSnapshot;

    const nextUi = buildHamkarUiFromBrand({
      primaryColor: restore
        ? keepSnapshot.brand?.primaryColor
        : existing?.brand?.primaryColor ?? brandPrimary,
      secondaryColor: restore
        ? keepSnapshot.brand?.secondaryColor
        : existing?.brand?.secondaryColor ?? brandSecondary,
      backgroundColor: restore
        ? keepSnapshot.brand?.backgroundColor
        : existing?.brand?.backgroundColor ?? brandBackground,
      menuIconColor: restore
        ? keepSnapshot.brand?.menuIconColor
        : existing?.brand?.menuIconColor ?? null,
      menuIconActiveColor: restore
        ? keepSnapshot.brand?.menuIconActiveColor
        : existing?.brand?.menuIconActiveColor ?? null,
      settingsManaged: Boolean(existing?.settingsManaged),
      brandManaged: Boolean(existing?.brandManaged),
      registryMode: restore
        ? keepSnapshot.registryMode
        : existing?.registryMode || registryMode,
      settings: restore ? keepSnapshot.settings : existing?.settings,
    });

    const appUiConfig = {
      ...nextUi,
      defaultSnapshot: keepSnapshot,
      settings: nextUi.settings,
    };

    const unchanged =
      JSON.stringify(existing) === JSON.stringify(appUiConfig) && !restore;
    if (unchanged) {
      skipped += 1;
      continue;
    }

    await prisma.tenant.update({
      where: { id: tenant.id },
      data: {
        appUiConfig: appUiConfig as any,
        ...(restore
          ? {
              primaryColor: keepSnapshot.brand?.primaryColor ?? null,
              secondaryColor: keepSnapshot.brand?.secondaryColor ?? null,
              backgroundColor: keepSnapshot.brand?.backgroundColor ?? null,
            }
          : {}),
      },
    });

    updated += 1;
    if (restore) restored += 1;
    console.log(
      `${restore ? 'restored' : 'seeded'}: ${tenant.domain} → default=${keepSnapshot.registryMode}`,
    );
  }

  console.log({
    tenants: filtered.length,
    updated,
    restored,
    skipped,
    restore,
    domain: onlyDomain,
  });
}

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