import { Inject, Injectable, Scope } from '@nestjs/common';
import { BaseReportService } from '../shared/services/base-report.service';
import { UserProvider } from 'src/core/sessions';
import { InjectDataSource } from '@nestjs/typeorm';
import { DataSource } from 'typeorm';
import { CONNECTION_NAME } from 'src/core/strings/constants/base.constants';
import { GetSummaryReportDto } from '../shared/dto/summary-report.get.dto';

@Injectable({ scope: Scope.REQUEST })
export class ReportSummaryService extends BaseReportService {
  @Inject()
  protected userProvider: UserProvider;

  constructor(
    @InjectDataSource(CONNECTION_NAME.DEFAULT)
    private dataSource: DataSource,
  ) {
    super();
  }

  async getReportItem(query: GetSummaryReportDto) {
    return this.dataSource.query(`
    select
        to_char(main.payment_date, 'DD-MM-YYYY') AS main__payment_date,
        CASE WHEN tenant.name is not null THEN tenant.name ELSE 'Company' END AS item_owner,
        tr_item.item_name AS tr_item__item_name,
        SUM(tr_item.qty) AS tr_item__qty,
        SUM(tr_item.total_net_price) AS tr_item__total_net_price
    from transactions main
        LEFT JOIN transaction_items tr_item ON tr_item.transaction_id = main.id
        LEFT JOIN items item ON item.id::text = tr_item.item_id::text
        LEFT JOIN users tenant ON tenant.id::text = item.tenant_id::text
    where
        main.status = 'settled'
        and tr_item.item_name is not null
        and main.is_recap_transaction = false
        and to_char(main.payment_date, 'DD-MM-YYYY') = '${query.date}'
    group by
        to_char(main.payment_date, 'DD-MM-YYYY'),
        CASE WHEN tenant.name is not null THEN tenant.name ELSE 'Company' END,
        tr_item.item_name
    `);
  }

  async getReportItemMaster(query: GetSummaryReportDto) {
    return this.dataSource.query(`
        select
        to_char(main.payment_date, 'DD-MM-YYYY') AS main__payment_date,
        CASE WHEN tenant.name is not null THEN tenant.name ELSE 'Company' END AS item_owner,
        CASE WHEN tr_item.item_type = 'bundling' THEN tr_item.item_name ELSE tr_item_bundling.item_name END AS tr_item_bundling__item_name,
        CASE WHEN tr_item.item_type = 'bundling' THEN tr_item_bundling.item_name ELSE tr_item.item_name END AS tr_item__item_name,
        SUM(tr_item.qty) AS tr_item__qty,
        SUM(CASE WHEN tr_item.item_type != 'bundling' THEN tr_item.total_net_price ELSE tr_item_bundling.total_net_price END) AS tr_item_bundling__total_net_price
    from transactions main
        LEFT JOIN transaction_items tr_item ON tr_item.transaction_id = main.id
        LEFT JOIN transaction_item_breakdowns tr_item_bundling ON tr_item_bundling.transaction_item_id = tr_item.id
        LEFT JOIN items item ON item.id::text = tr_item.item_id::text
        LEFT JOIN users tenant ON tenant.id::text = item.tenant_id::text
    where
        main.status = 'settled'
        and tr_item.item_name is not null
        and main.is_recap_transaction = false
        and to_char(main.payment_date, 'DD-MM-YYYY') = '${query.date}'
    group by
        to_char(main.payment_date, 'DD-MM-YYYY'),
        CASE WHEN tenant.name is not null THEN tenant.name ELSE 'Company' END,
        CASE WHEN tr_item.item_type = 'bundling' THEN tr_item.item_name ELSE tr_item_bundling.item_name END,
        CASE WHEN tr_item.item_type = 'bundling' THEN tr_item_bundling.item_name ELSE tr_item.item_name END
    `);
  }
}