import { Injectable, InternalServerErrorException } from '@nestjs/common';
import { Connection, Request } from 'mssql';
import { MssqlDBService } from 'src/db/db.service';
import { InsertRegionsDto, UpdateRegionDto } from 'src/dto/uscib-managed-sp/region/region.dto';
import * as mssql from 'mssql';
import { InternalServerException } from 'src/exceptions/internalServerError.exception';

@Injectable()
export class RegionService {

    constructor(private readonly mssqlDBService: MssqlDBService) { }

    async getRegions() {
        let connection: mssql.ConnectionPool;
        try {
            connection = await this.mssqlDBService.getConnection();
            const request = new Request(connection);
            const result = await request.execute('carnetsys.GETREGIONS');
            return result.recordset;
        } catch (error) {
            throw new InternalServerException();
        } 
    }

    async insetNewRegions(body: InsertRegionsDto) {

        let connection: mssql.ConnectionPool;
        try {
            connection = await this.mssqlDBService.getConnection();
            const request = new Request(connection);
            request.input('P_REGION', mssql.VarChar(mssql.MAX), body.P_REGION);
            request.input('P_NAME', mssql.VarChar(mssql.MAX), body.P_NAME);
            const result = await request.execute('carnetsys.INSERTNEWREGION');
            return { statusCode: 201, message: "Created Successfully", ...result.recordset[0] };

        } catch (error) { 
            throw new InternalServerException(); 
        } 
    }

    async updateRegions(body: UpdateRegionDto){
        let connection: mssql.ConnectionPool;
        try {
            connection = await this.mssqlDBService.getConnection();
            const request = new Request(connection);
            request.input('p_regionID', mssql.Int, body.P_REGIONID);
            request.input('P_NAME', mssql.VarChar(mssql.MAX), body.P_NAME);
            const result = await request.execute('carnetsys.UpdateRegion');
            return { statusCode: 200, message: "Updated Successfully", ...result.recordset[0] };

        } catch (error) {
            throw new InternalServerException(); 
        } 
    }
}