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src/modules/site-setting/siteSetting.service.ts

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+import { inject, injectable } from "inversify";
+
+import { CreateSiteSettingDTO, UpdateSiteSettingDTO } from "./DTO/siteSetting.dto";
+import { SiteSettingRepo } from "./siteSetting.repository";
+import { CommonMessage } from "../../common/enums/message.enum";
+import { BadRequestError } from "../../core/app/app.errors";
+import { IOCTYPES } from "../../IOC/ioc.types";
+
+@injectable()
+export class SiteSettingService {
+  @inject(IOCTYPES.SiteSettingRepo) siteSettingRepo: SiteSettingRepo;
+
+  async createSiteSetting(createDto: CreateSiteSettingDTO) {
+    const existSiteSetting = await this.siteSettingRepo.findAll();
+    if (existSiteSetting.length > 0) throw new BadRequestError(CommonMessage.SettingExists);
+    const siteSetting = await this.siteSettingRepo.model.create(createDto);
+    return { siteSetting };
+  }
+
+  async getSiteSetting(name?: string) {
+    const projection = name ? { [name]: 1 } : {};
+    const siteSetting = await this.siteSettingRepo.model.findOne({}, projection);
+    return { siteSetting };
+  }
+
+  async updateSiteSetting(updateDto: UpdateSiteSettingDTO) {
+    const siteSetting = await this.siteSettingRepo.model.findOneAndUpdate({}, updateDto, { new: true });
+    return { siteSetting };
+  }
+}