backend/src/website/website-favicon.service.ts

import { Injectable, NotFoundException } from '@nestjs/common';
import { PrismaService } from '../prisma/prisma.service';
import { TenantService } from '../tenant/tenant.service';

@Injectable()
export class WebsiteFaviconService {
  constructor(
    private readonly prisma: PrismaService,
    private readonly tenant: TenantService,
  ) {}

  async getPublic(host: string) {
    const business = await this.tenant.resolveBusinessByDomain(host);

    const record = await this.prisma.business.findUnique({
      where: { id: business.id },
      select: {
        faviconMediaId: true,
        logoMedia: { select: { publicUrl: true } },
        logoDarkMedia: { select: { publicUrl: true } },
        faviconMedia: { select: { publicUrl: true } },
      },
    });

    if (!record) {
      throw new NotFoundException('Business not found');
    }

    const logoUrl = record.logoMedia?.publicUrl ?? null;
    const logoDarkUrl = record.logoDarkMedia?.publicUrl ?? null;
    const faviconUrl = record.faviconMedia?.publicUrl ?? logoUrl;

    return {
      faviconUrl,
      logoUrl,
      logoDarkUrl,
      hasDedicatedFavicon: record.faviconMediaId != null,
    };
  }
}