add folder operation and use createQueryRunner

src/Operations/dto/operations.dto.ts

@@ -0,0 +1,18 @@
+import { IsInt, IsNotEmpty, Min } from "class-validator";
+
+export class chargePrintDto {
+
+  @IsInt()
+  @IsNotEmpty()
+  @Min(1)
+  monto:number
+
+  @IsInt()
+  @Min(1)
+  @IsNotEmpty()
+  numero_hojas: number;
+
+  @IsInt()
+  @IsNotEmpty()
+  id_cuenta: number;
+}

src/Operations/operations.controller.ts

@@ -0,0 +1,9 @@
+import { Controller } from "@nestjs/common";
+import { OperationsService } from "./operations.services";
+
+@Controller('operations')
+export class OperationsController{
+    constructor(private readonly operationsService:OperationsService){}
+
+    
+}

src/Operations/operations.module.ts

@@ -0,0 +1,15 @@
+import { Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { Student } from 'src/alumno/entities/student.entity';
+import { DetalleServicio } from 'src/detalle_servicio/entities/detalle_servicio.entity';
+import { OperationsController } from './operations.controller';
+import { OperationsService } from './operations.services';
+
+@Module({
+  imports: [
+    TypeOrmModule.forFeature([Student, DetalleServicio]), // entidades que usarán las transacciones
+  ],
+  controllers: [OperationsController],
+  providers: [OperationsService],
+})
+export class OperationsModule {}

src/Operations/operations.services.ts

@@ -0,0 +1,54 @@
+import { BadRequestException, Injectable } from '@nestjs/common';
+import { StudentService } from 'src/alumno/student.service';
+import { DetalleServicioService } from 'src/detalle_servicio/detalle_servicio.service';
+import { DataSource } from 'typeorm';
+import { chargePrintDto } from './dto/operations.dto';
+import { CreateDetalleServicioDto } from 'src/detalle_servicio/dto/create-detalle_servicio.dto';
+
+@Injectable()
+export class OperationsService {
+  constructor(
+    private readonly dataSource: DataSource,
+    private readonly studentService: StudentService,
+    private readonly detalleServicioService: DetalleServicioService,
+  ) {}
+
+  async chargePrint(data: chargePrintDto, userId: number) {
+    const { monto, id_cuenta } = data;
+
+    const queryRunner = this.dataSource.createQueryRunner();
+    await queryRunner.connect();
+    await queryRunner.startTransaction();
+
+    try {
+      const credit = await this.studentService.GetCredit(id_cuenta);
+
+      if (credit < monto) {
+        throw new BadRequestException('Crédito insuficiente');
+      }
+
+      const detalleData: CreateDetalleServicioDto = {
+        ...data,
+        id_servicio: 1,
+        id_usuario: userId,
+        fecha_operacion: new Date(),
+      };
+
+      await this.detalleServicioService.Create(detalleData, queryRunner.manager);
+
+      await this.studentService.UpdateCredit(
+        id_cuenta,
+        monto,
+        queryRunner.manager,
+      );
+
+      await queryRunner.commitTransaction();
+      return { message: 'correct' };
+    } catch (error) {
+      await queryRunner.rollbackTransaction();
+      return { message: 'error', error: error.message };
+    } finally {
+      await queryRunner.release();
+    }
+  }
+}

src/alumno/dto/create-student.dto.ts

@@ -1,5 +1,5 @@
-import { Type } from 'class-transformer';
-import { IsDate, IsNotEmpty, IsNumber, IsString } from 'class-validator';
+
+import { IsEmail, IsNotEmpty, IsNumber, IsString } from 'class-validator';
 
 export class CreateStudentDto {
   @IsNotEmpty()
@@ -17,6 +17,7 @@ export class CreateStudentDto {
   @IsNumber()
   id_carrera: number;
 
+  @IsEmail()
   @IsString()
   correo: string;
 }

src/alumno/entities/student.entity.ts

@@ -26,7 +26,7 @@ export class Student {
     scale: 2,
     default: 0.0,
   })
-  credito: string;
+  credito: number;
 
   @Column({
     name: 'fecha_actualizacion_credito',

src/alumno/student.controller.ts

@@ -27,17 +27,7 @@ export class StudentController {
   }
 
   @Get(':id')
-  findOne(@Param('id') id: string) {
+  findOne(@Param('id') id: number) {
     return this.studentService.findOne(+id);
   }
-
-  @Patch(':id')
-  update(@Param('id') id: string, @Body() updateStudentDto: UpdateStudentDto) {
-    return this.studentService.update(+id, updateStudentDto);
-  }
-
-  @Delete(':id')
-  remove(@Param('id') id: string) {
-    return this.studentService.remove(+id);
-  }
 }

src/alumno/student.service.ts

@@ -2,7 +2,7 @@ import { Injectable, NotFoundException } from '@nestjs/common';
 import { CreateStudentDto } from './dto/create-student.dto';
 import { UpdateStudentDto } from './dto/update-student.dto';
 import { Student } from './entities/student.entity';
-import { Repository } from 'typeorm';
+import { EntityManager, Repository } from 'typeorm';
 import { InjectRepository } from '@nestjs/typeorm';
 
 @Injectable()
@@ -31,11 +31,22 @@ export class StudentService {
     return student;
   }
 
-  update(id: number, updateStudentDto: UpdateStudentDto) {
-    return `This action updates a #${id} student`;
+  async GetCredit(id_cuenta: number): Promise<Student['credito']> {
+    const student = await this.findOne(id_cuenta);
+    return student.credito;
   }
 
-  remove(id: number) {
-    return `This action removes a #${id} student`;
+  async UpdateCredit(
+    id_cuenta: number,
+    credit: number,
+    manager: EntityManager,
+  ) {
+    const repo = manager.getRepository(Student);
+    return await repo
+      .createQueryBuilder()
+      .update()
+      .set({ credito: () => `credito - ${credit}` })
+      .where({ id_cuenta })
+      .execute();
   }
 }

src/detalle_servicio/detalle_servicio.service.ts

@@ -1,26 +1,13 @@
 import { Injectable } from '@nestjs/common';
+import { DetalleServicio } from './entities/detalle_servicio.entity';
+import { EntityManager } from 'typeorm';
 import { CreateDetalleServicioDto } from './dto/create-detalle_servicio.dto';
-import { UpdateDetalleServicioDto } from './dto/update-detalle_servicio.dto';
 
 @Injectable()
 export class DetalleServicioService {
-  create(createDetalleServicioDto: CreateDetalleServicioDto) {
-    return 'This action adds a new detalleServicio';
-  }
-
-  findAll() {
-    return `This action returns all detalleServicio`;
-  }
-
-  findOne(id: number) {
-    return `This action returns a #${id} detalleServicio`;
-  }
-
-  update(id: number, updateDetalleServicioDto: UpdateDetalleServicioDto) {
-    return `This action updates a #${id} detalleServicio`;
-  }
-
-  remove(id: number) {
-    return `This action removes a #${id} detalleServicio`;
+  async Create(data: CreateDetalleServicioDto, manager: EntityManager) {
+    const repo = manager.getRepository(DetalleServicio);
+    const details = repo.create(data);
+    return await repo.save(details);
   }
 }

src/detalle_servicio/dto/create-detalle_servicio.dto.ts

@@ -1,9 +1,15 @@
 import { Type } from 'class-transformer';
-import { IsDate, IsInt, IsNotEmpty, IsOptional, Min } from 'class-validator';
+import { IsDate, IsIn, IsInt, IsNotEmpty, IsOptional, Min } from 'class-validator';
 
 export class CreateDetalleServicioDto {
+
   @IsInt()
-  @Min(0)
+  @IsNotEmpty()
+  @Min(1)
+  monto:number
+
+  @IsInt()
+  @Min(1)
   @IsNotEmpty()
   numero_hojas: number;
 
@@ -23,8 +29,4 @@ export class CreateDetalleServicioDto {
   @IsInt()
   @IsNotEmpty()
   id_usuario: number;
-
-  @IsOptional()
-  @IsInt()
-  id_periodo?: number;
 }

src/detalle_servicio/dto/detalle_servicio.dto.ts

@@ -1,9 +0,0 @@
-export class DetalleServicioDto {
-  id_detalle_servicio: number;
-  numero_hojas: number;
-  fecha_operacion: Date;
-  id_cuenta: number;
-  id_servicio: number;
-  id_usuario: number;
-  id_periodo: number | null;
-}

src/detalle_servicio/entities/detalle_servicio.entity.ts

@@ -15,7 +15,7 @@ export class DetalleServicio {
     scale: 2,
     nullable: false,
   })
-  monto: string;
+  monto: number;
 
   @Column({ name: 'numero_hojas', type: 'int', nullable: false, default: 0 })
   numero_hojas: number;
@@ -39,13 +39,4 @@ export class DetalleServicio {
 
   @Column({ name: 'id_perido', type: 'int', default: null })
   id_periodo: number;
-}
-
-/*   `id_detalle_servicio` int(11) NOT NULL AUTO_INCREMENT,
-  `monto` decimal(10,2) NOT NULL,
-  `numero_hojas` int(11) NOT NULL DEFAULT 0,
-  `fecha_operacion` timestamp NOT NULL DEFAULT current_timestamp(),
-  `id_cuenta` int(9) unsigned zerofill NOT NULL,
-  `id_servicio` int(11) NOT NULL,
-  `id_usuario` int(11) NOT NULL,
-  `id_periodo` int(11) DEFAULT NULL,*/
+}

src/user/entities/user.entity.ts

@@ -49,7 +49,6 @@ export class Perfil {
   @Column({ name: 'perfil', type: 'varchar', length: 45, nullable: false })
   perfil: string;
 
-  // Relación uno a muchos con usuario
   @OneToMany(() => User, (user) => user.perfil)
   usuarios: User[];
 }

src/user/user.controller.ts

@@ -1,4 +1,12 @@
-import { Controller, Get, Post, Body, UseGuards, Request, Res } from '@nestjs/common';
+import {
+  Controller,
+  Get,
+  Post,
+  Body,
+  UseGuards,
+  Request,
+  Res,
+} from '@nestjs/common';
 import type { Response } from 'express';
 import { UserService } from './user.service';
 import { CreateUserDto } from './dto/create-user.dto';
@@ -6,19 +14,17 @@ import { AuthGuard } from '@nestjs/passport';
 
 @Controller('user')
 export class UserController {
-  constructor(private readonly userService: UserService) { }
-
-@Post()
-async Login(@Body() data: CreateUserDto, @Res() res: Response) {
-  return this.userService.Login(data, res);
-}
+  constructor(private readonly userService: UserService) {}
 
+  @Post()
+  async Login(@Body() data: CreateUserDto, @Res() res: Response) {
+    return this.userService.Login(data, res);
+  }
 
   @UseGuards(AuthGuard('jwt'))
   @Get('/validate-token')
   getProfile(@Request() req) {
-    return req.user; 
+    return req.user;
   }
-
 }
-//IO
+//IO

src/user/user.service.ts

@@ -10,7 +10,7 @@ import { JwtService } from '@nestjs/jwt';
 export class UserService {
   constructor(
     @InjectRepository(User)
-    private userRepository: Repository<User>,
+    private readonly userRepository: Repository<User>,
 
     private jwtService: JwtService
   ) { }