import { dataSource } from "../data-source";
import { template } from "../entity/template";
import InternalException from "../exceptions/internalException";
import { CreateTemplateCommand, DeleteTemplateCommand, UpdateTemplateCommand } from "./templateCommand";

export default abstract class TemplateCommandHandler {
  /**
   * @description create template
   * @param CreateTemplateCommand
   * @returns {Promise<number>}
   */
  static async create(createTemplate: CreateTemplateCommand): Promise<number> {
    return await dataSource
      .createQueryBuilder()
      .insert()
      .into(template)
      .values({
        template: createTemplate.template,
        description: createTemplate.description,
      })
      .execute()
      .then((result) => {
        return result.identifiers[0].id;
      })
      .catch((err) => {
        throw new InternalException("Failed creating template", err);
      });
  }

  /**
   * @description update template
   * @param UpdateTemplateCommand
   * @returns {Promise<void>}
   */
  static async update(updateTemplate: UpdateTemplateCommand): Promise<void> {
    return await dataSource
      .createQueryBuilder()
      .update(template)
      .set({
        template: updateTemplate.template,
        description: updateTemplate.description,
        design: updateTemplate.design,
        headerHTML: updateTemplate.headerHTML,
        bodyHTML: updateTemplate.bodyHTML,
        footerHTML: updateTemplate.footerHTML,
      })
      .where("id = :id", { id: updateTemplate.id })
      .execute()
      .then(() => {})
      .catch((err) => {
        throw new InternalException("Failed updating template", err);
      });
  }

  /**
   * @description delete template
   * @param DeleteTemplateCommand
   * @returns {Promise<void>}
   */
  static async delete(deletTemplate: DeleteTemplateCommand): Promise<void> {
    return await dataSource
      .createQueryBuilder()
      .delete()
      .from(template)
      .where("id = :id", { id: deletTemplate.id })
      .execute()
      .then(() => {})
      .catch((err) => {
        throw new InternalException("Failed deleting template", err);
      });
  }
}