/**
 * Normalize stored Khanegi appUiConfig so userTheme Zod schema accepts it.
 *
 * Fixes common backfill issues:
 *   navigation.type: "sidebar+bottom" → "both"
 *   header.variant missing → "default"
 *   route "products" → "buyProduct"
 *
 * Dry-run:
 *   KHANEGI_UI_REPAIR_DRY_RUN=1 npm run prisma:repair-khanegi-ui-config
 *
 * Apply:
 *   npm run prisma:repair-khanegi-ui-config
 */
import { Prisma, PrismaClient, ProductType } from '@prisma/client';

const prisma = new PrismaClient();

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

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()}`;
}

function mapNavType(value: unknown): string | undefined {
  if (typeof value !== 'string') return undefined;
  if (value === 'sidebar+bottom' || value === 'both') return 'both';
  if (value === 'bottom-navigation' || value === 'sidebar') return value;
  return value;
}

function mapRoute(value: unknown): unknown {
  if (value === 'products') return 'buyProduct';
  return value;
}

function mapNavItems(items: unknown): unknown {
  if (!Array.isArray(items)) return items;
  return items.map((item) => {
    if (!item || typeof item !== 'object' || Array.isArray(item)) return item;
    const row = { ...(item as Record<string, unknown>) };
    if ('route' in row) row.route = mapRoute(row.route);
    return row;
  });
}

function normalizeUiConfig(raw: unknown): {
  next: Record<string, unknown> | null;
  changed: boolean;
  fixes: string[];
} {
  if (!raw || typeof raw !== 'object' || Array.isArray(raw)) {
    return { next: null, changed: false, fixes: [] };
  }

  const root = JSON.parse(JSON.stringify(raw)) as Record<string, unknown>;
  const fixes: string[] = [];
  const app =
    root.app && typeof root.app === 'object' && !Array.isArray(root.app)
      ? (root.app as Record<string, unknown>)
      : null;

  if (!app) {
    return { next: root, changed: false, fixes };
  }

  const navigation =
    app.navigation && typeof app.navigation === 'object' && !Array.isArray(app.navigation)
      ? (app.navigation as Record<string, unknown>)
      : null;

  if (navigation) {
    const mapped = mapNavType(navigation.type);
    if (mapped && mapped !== navigation.type) {
      fixes.push(`navigation.type:${String(navigation.type)}→${mapped}`);
      navigation.type = mapped;
    }
    if ('sidebar' in navigation) {
      const before = JSON.stringify(navigation.sidebar);
      navigation.sidebar = mapNavItems(navigation.sidebar);
      if (JSON.stringify(navigation.sidebar) !== before) {
        fixes.push('navigation.sidebar.routes');
      }
    }
    if ('bottom' in navigation) {
      const before = JSON.stringify(navigation.bottom);
      navigation.bottom = mapNavItems(navigation.bottom);
      if (JSON.stringify(navigation.bottom) !== before) {
        fixes.push('navigation.bottom.routes');
      }
    }
    const referral =
      navigation.sidebarReferral &&
      typeof navigation.sidebarReferral === 'object' &&
      !Array.isArray(navigation.sidebarReferral)
        ? (navigation.sidebarReferral as Record<string, unknown>)
        : null;
    if (referral && 'route' in referral) {
      const mappedRoute = mapRoute(referral.route);
      if (mappedRoute !== referral.route) {
        fixes.push('navigation.sidebarReferral.route');
        referral.route = mappedRoute;
      }
    }
  }

  const header =
    app.header && typeof app.header === 'object' && !Array.isArray(app.header)
      ? (app.header as Record<string, unknown>)
      : null;
  if (header && header.variant !== 'default') {
    fixes.push('header.variant→default');
    header.variant = 'default';
  }

  if (app.startRoute === 'products') {
    fixes.push('startRoute:products→buyProduct');
    app.startRoute = 'buyProduct';
  }

  // Keep factory snapshot consistent if present
  const snap =
    root.defaultSnapshot &&
    typeof root.defaultSnapshot === 'object' &&
    !Array.isArray(root.defaultSnapshot)
      ? (root.defaultSnapshot as Record<string, unknown>)
      : null;
  if (snap?.app && typeof snap.app === 'object' && !Array.isArray(snap.app)) {
    const nested = normalizeUiConfig({
      schemaId: 'ui-config',
      version: '1.0.0',
      app: snap.app,
      pages: snap.pages || {},
    });
    if (nested.next?.app) {
      snap.app = nested.next.app;
      if (nested.fixes.length) fixes.push(...nested.fixes.map((f) => `snapshot.${f}`));
    }
  }

  return { next: root, changed: fixes.length > 0, fixes };
}

async function main() {
  const dryRun = env('KHANEGI_UI_REPAIR_DRY_RUN') === '1';
  const tenants = await prisma.tenant.findMany({
    where: { product: ProductType.khanegi, isActive: true },
    select: {
      id: true,
      domain: true,
      nameFa: true,
      uiVariant: true,
      appUiConfig: true,
      appVersion: true,
    },
    orderBy: { domain: 'asc' },
  });

  let updated = 0;
  for (const t of tenants) {
    if (!t.appUiConfig) continue;
    const { next, changed, fixes } = normalizeUiConfig(t.appUiConfig);
    if (!changed || !next) continue;

    const nextVersion = bumpAppVersion(t.appVersion);
    console.log(
      JSON.stringify({
        domain: t.domain,
        nameFa: t.nameFa,
        uiVariant: t.uiVariant,
        fixes,
        appVersion: { from: t.appVersion, to: nextVersion },
        dryRun,
      }),
    );

    if (dryRun) continue;

    await prisma.tenant.update({
      where: { id: t.id },
      data: {
        appUiConfig: next as Prisma.InputJsonValue,
        appVersion: nextVersion,
      },
    });
    updated += 1;
  }

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

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