CRUD modulo Requisicion de combustible

backend/src/modules/fuel-requests/fuelRequest.controller.ts

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+import { Request, Response } from "express";
+import { FuelRequestService } from "./fuelRequest.service";
+
+const service = new FuelRequestService();
+
+export class FuelRequestController {
+    //Obtener todas las requisiciones
+
+    async getAll(
+        req:Request,
+        res:Response
+    ){
+
+        try{
+            const requests = await service.getAll();
+            res.json(requests);
+        } catch (error){
+
+            res.status(500).json({
+                message:"Error al obtener requisiciones",
+                error
+            });
+        } 
+        
+    }   
+
+    //Obtener requisición por ID
+
+    async getById(
+        req:Request,
+        res:Response
+    ){
+        try {
+            const request = 
+            await service.getById(
+                req.params.id as string
+            );
+
+            if(!request) {
+                return res.status(404).json({
+                    message:
+                    "Requisición no encontrada"
+                });
+            }
+
+            res.json(request);
+        }
+
+        catch (error) {
+            res.status(500).json({
+                message:"Error al obtener requisicion",
+                error
+            });
+        }
+    }
+
+
+    //Crear requisición
+
+    async create(
+        req:Request,
+        res:Response
+    ){
+        try {
+            const request = 
+            await service.create(
+                req.body
+            );
+
+        res.status(201).json(
+            request
+        );
+
+        }
+        catch (error) {
+            res.status(500).json({
+                message:"Error al crear requisición", 
+                error
+            });
+        }
+    }
+
+
+    async update(
+        req:Request,
+        res:Response
+    ){
+        try {
+
+            const request = await service.update(
+                req.params.id as string,
+                req.body
+            );
+
+            if (!request) {
+                return res.status(404).json({
+                    message:
+                    "Requisición no encontrada"
+                });
+            }
+
+            res.json(request);
+        }catch(error) {
+            res.status(500).json({
+                message:"Error al actualizar requisición",
+                error
+            });
+        }
+    }
+
+    //Eliminar requisición
+
+    async delete(
+        req:Request,
+        res:Response
+    ){
+        try{
+            const request = 
+            await service.delete(
+                req.params.id as string
+            );
+
+            if(!request){
+                return res.status(404).json({
+                    message:
+                    "Requisición no encontrada"
+                });
+            }
+            res.json({
+                message:"Requisición eliminada correctamente"
+            });
+        }
+        catch (error) {
+            res.status(500).json({
+                message: "Error al eliminar requisición",
+                error
+            });
+        }
+    }
+}

backend/src/modules/fuel-requests/fuelRequest.interface.ts

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+import {ObjectId} from "mongoose";
+
+export interface IFuelRequest {
+
+    requestNumber:string;
+    employeeId:number;
+    department:number;
+    vehicleId:number;
+    routeId:number;
+    fuelPumpId?:ObjectId;
+    fuelTypeId:ObjectId;
+    createdBy:ObjectId;
+    authorizedBy?:ObjectId;
+    gallonQuantity:number;
+    pricePerGallon:number;
+    totalAmount?:number;
+    previousMileage:number;
+    currentMileage:number;
+    distanceTraveled?:number;
+    pumpReadingId?:ObjectId;
+    pumpDifference?:number;
+    comments?:string;
+    odometerWorkin:boolean;
+    status:string;
+}

backend/src/modules/fuel-requests/fuelRequest.model.ts

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+import mongoose from "mongoose";
+
+const fuelRequestSchema = new mongoose.Schema({
+
+    requestNumber:{
+        type:Number,
+        required:true,
+        unique:true
+    },
+
+    employeeId:{
+        type:Number,
+        required:true
+    },
+
+    departmentId:{
+        type:Number,
+        required:true
+    },
+
+    routeId:{
+        type:Number,
+        required:true
+    },
+
+    fuelPumpId:{
+        type:mongoose.Schema.Types.ObjectId,
+        ref:"FuelPump"
+    },
+
+    fuelTypeId:{
+        type:mongoose.Schema.Types.ObjectId,
+        ref:"FuelType"
+    },
+
+    createdBy:{
+        type:mongoose.Schema.Types.ObjectId,
+        ref:"User",
+        required:true
+    },
+
+    authorizedBy:{
+        type:mongoose.Schema.Types.ObjectId,
+        ref:"User"
+    },
+
+    gallonQuantity:{
+        type:Number,
+        required:true
+    },
+
+    pricePerGallon:{
+        type:Number,
+        default:0
+    },
+
+    totalAmount:{
+        type:Number,
+        default:0
+    },
+
+    previousMileage:{
+        type:Number,
+        required:true,
+    },
+
+    currentMileage:{
+        type:Number,
+        required:true
+    },
+
+    distanceTraveled:{
+        type:Number,
+        default:0
+    },
+
+    pumpReading:{
+        type:mongoose.Schema.Types.ObjectId,
+        ref:"PumpReading",
+    },
+
+    pumpDifference:{
+        type:Number,
+        default:0
+    },
+
+    comments:{
+        type:String
+    },
+
+    odometerWorking:{
+        type:Boolean,
+        default:true
+
+    },
+
+    status:{
+        type:String,
+        enum:[
+            "PENDIENTE",
+            "APROBADO",
+            "RECHAZADO",
+        ],
+
+        default:"PENDIENTE"
+    }
+},
+
+{
+    timestamps:true
+}
+
+);
+
+export default mongoose.model("FuelRequest", fuelRequestSchema);

backend/src/modules/fuel-requests/fuelRequest.routes.ts

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+import { Router } from "express";
+import { FuelRequestController } from "./fuelRequest.controller";
+import { authMiddleware } from "../auth/auth.middleware";
+
+const fuelRequestRouter = Router();
+
+const controller = new FuelRequestController();
+
+
+//Obtener todas las requisiciones
+fuelRequestRouter.get(
+    "/",
+    authMiddleware,
+    controller.getAll
+);
+
+
+//Obtener requisición por ID
+
+fuelRequestRouter.get(
+    "/:id",
+    authMiddleware,
+    controller.getById
+);
+
+
+//Crear requisición
+fuelRequestRouter.post(
+    "/",
+    authMiddleware,
+    controller.create
+);
+
+
+//Actualizar requisición
+fuelRequestRouter.put(
+    "/:id",
+    authMiddleware,
+    controller.update
+);
+
+//Eliminar requisició
+fuelRequestRouter.delete(
+    "/:id",
+    authMiddleware,
+    controller.delete
+);
+
+export default fuelRequestRouter;

backend/src/modules/fuel-requests/fuelRequest.service.ts

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+import fuelRequestModel from "./fuelRequest.model";
+import { IFuelRequest } from "./fuelRequest.interface";
+
+import { generateRequestNumber } from "../../utils/requestNumber";
+
+export class FuelRequestService {
+    //Obtener todas las requisiciones
+
+    async getAll() {
+        return await fuelRequestModel
+            .find()
+            .populate("fuelPumpId")
+            .populate("fuelTypeId")
+            .populate("createdBy")
+            .populate("authorizedBy")
+            .sort({ createdAt: -1 });
+    }
+
+    //Obtener reauisición por ID
+
+    async getById(
+        id:string
+    ) {
+
+        return await fuelRequestModel
+            .findById(id)
+            .populate("fuelPumpId")
+            .populate("fuelTypeId")
+            .populate("createdBy")
+            .populate("authorizedBy");
+
+    }
+
+    //Crear una nueva requisición
+
+    async create (
+        data:IFuelRequest
+    ){
+        //Generar número automático
+        data.requestNumber = generateRequestNumber();
+
+        //Calcular distancia recorrida
+        data.distanceTraveled = data.currentMileage - data.previousMileage;
+
+        //Calcular monto total
+        data.totalAmount = data.gallonQuantity * data.pricePerGallon;
+
+        //Estado inicial
+        data.status = "PENDIENTE";
+
+        //Crear documento
+        const request = new fuelRequestModel(data);
+
+        //Guardar en DB
+        return await request.save();
+
+    }
+
+    async update(
+        id:string,
+        data:Partial<IFuelRequest>
+    ){
+        //Recalcular distancia
+        if(data.currentMileage !== undefined &&
+            data.previousMileage !== undefined
+        ){
+            data.distanceTraveled =
+            data.currentMileage -
+            data.previousMileage;
+        }
+
+        //Recalcular monto
+        if(
+            data.gallonQuantity !== undefined &&
+            data.pricePerGallon !== undefined
+        ){
+            data.totalAmount =
+            data.gallonQuantity *
+            data.pricePerGallon;
+        }
+
+        return await fuelRequestModel
+        .findByIdAndUpdate(
+            id,
+            data,
+            {
+                new:true
+            }
+        );
+    }
+
+    //Eliminar requisición
+
+    async delete(
+        id:string
+    ){
+
+        return await fuelRequestModel
+        .findByIdAndDelete(id);
+    }
+}