import { DataSource, ViewColumn, ViewEntity } from "typeorm";
import { member } from "../entity/club/member/member";
import { DB_TYPE } from "../env.defaults";

@ViewEntity({
  expression: (datasource: DataSource) =>
    datasource
      .getRepository(member)
      .createQueryBuilder("member")
      .select("member.id", "id")
      .addSelect("member.firstname", "firstname")
      .addSelect("member.lastname", "lastname")
      .addSelect("member.nameaffix", "nameaffix")
      .addSelect("member.birthdate", "birthdate")
      .addSelect("salutation.salutation", "salutation")
      .addSelect(
        DB_TYPE == "postgres"
          ? `DATE_PART('year', AGE(CURRENT_DATE, member.birthdate))`
          : "TIMESTAMPDIFF(YEAR, member.birthdate, CURDATE())",
        "todayAge"
      )
      .addSelect(
        DB_TYPE == "postgres"
          ? `EXTRACT(YEAR FROM CURRENT_DATE) - EXTRACT(YEAR FROM member.birthdate)`
          : "YEAR(CURDATE()) - YEAR(member.birthdate)",
        "ageThisYear"
      )
      .addSelect(
        DB_TYPE == "postgres"
          ? `AGE(CURRENT_DATE, member.birthdate)`
          : "CONCAT('_', FROM_DAYS(TIMESTAMPDIFF(DAY, member.birthdate, CURDATE())))",
        "exactAge"
      )
      .leftJoin("member.salutation", "salutation"),
})
export class memberView {
  @ViewColumn()
  id: string;

  @ViewColumn()
  salutation: string;

  @ViewColumn()
  firstname: string;

  @ViewColumn()
  lastname: string;

  @ViewColumn()
  nameaffix: string;

  @ViewColumn()
  birthdate: Date;

  @ViewColumn()
  todayAge: number;

  @ViewColumn()
  ageThisYear: number;

  @ViewColumn()
  exactAge: string;
}