import { Injectable } from '@nestjs/common';
import { PrismaService } from '../prisma/prisma.service';
import { UpdateSettingsDto } from './dto/settings.dto';

@Injectable()
export class SettingsService {
  constructor(private readonly prisma: PrismaService) {}

  async get() {
    const settings = await this.ensureDefaults();
    return this.map(settings);
  }

  async update(dto: UpdateSettingsDto) {
    await this.ensureDefaults();
    const settings = await this.prisma.systemSettings.update({
      where: { id: 'default' },
      data: {
        maxMeteragePerInvoice: dto.maxMeteragePerInvoice,
        cashInvoiceValidityHours: dto.cashInvoiceValidityHours,
        defaultSettlementCheck: dto.defaultSettlementCheck,
        defaultSettlementCash: dto.defaultSettlementCash,
        smsOrderRegistered: dto.smsOrderRegistered,
        smsPaymentReminder: dto.smsPaymentReminder,
        smsCheckReview: dto.smsCheckReview,
        smsShippingUpdate: dto.smsShippingUpdate,
        supportPhone:
          dto.supportPhone === undefined
            ? undefined
            : dto.supportPhone?.trim() || null,
        supportEmail:
          dto.supportEmail === undefined
            ? undefined
            : dto.supportEmail?.trim() || null,
      },
    });
    return this.map(settings);
  }

  private async ensureDefaults() {
    return this.prisma.systemSettings.upsert({
      where: { id: 'default' },
      create: { id: 'default' },
      update: {},
    });
  }

  private map(settings: {
    id: string;
    maxMeteragePerInvoice: number;
    cashInvoiceValidityHours: number;
    defaultSettlementCheck: boolean;
    defaultSettlementCash: boolean;
    smsOrderRegistered: boolean;
    smsPaymentReminder: boolean;
    smsCheckReview: boolean;
    smsShippingUpdate: boolean;
    supportPhone: string | null;
    supportEmail: string | null;
    updatedAt: Date;
  }) {
    return {
      id: settings.id,
      maxMeteragePerInvoice: settings.maxMeteragePerInvoice,
      cashInvoiceValidityHours: settings.cashInvoiceValidityHours,
      defaultSettlementCheck: settings.defaultSettlementCheck,
      defaultSettlementCash: settings.defaultSettlementCash,
      smsOrderRegistered: settings.smsOrderRegistered,
      smsPaymentReminder: settings.smsPaymentReminder,
      smsCheckReview: settings.smsCheckReview,
      smsShippingUpdate: settings.smsShippingUpdate,
      supportPhone: settings.supportPhone,
      supportEmail: settings.supportEmail,
      updatedAt: settings.updatedAt.toISOString(),
    };
  }
}