bill generation done

Author: shawon-majid

server/src/controllers/contractorBills.ts

@@ -0,0 +1,100 @@
+import { Request, Response } from "express";
+import errorWrapper from "../middlewares/errorWrapper";
+import { PrismaClient } from "@prisma/client";
+import { adminLog } from "../services/logdata";
+
+const prisma = new PrismaClient();
+
+const generateBillFortheWeek = errorWrapper(
+  async (req: Request, res: Response) => {
+    const { stsId, contractorId } = req.body;
+
+    const sts = await prisma.sTS.findUnique({
+      where: {
+        id: stsId,
+      },
+    });
+
+    if (!sts) {
+      res.status(404).json({ message: "STS not found" });
+    }
+
+    // get the entries for the week
+
+    const contractorEntries = await prisma.sTSContractorEntry.findMany({
+      where: {
+        stsId,
+        contractorId,
+        entryTime: {
+          gte: new Date(new Date().setDate(new Date().getDate() - 7)),
+        },
+      },
+    });
+
+    const totalWasteOfWeek = contractorEntries.reduce(
+      (acc, entry) => acc + Number(entry.wasteWeight),
+      0
+    );
+
+    const requiredWaste = Number(sts?.requiredWastePerWeek);
+    const PaymentPerTon = Number(sts?.paymentPerTon);
+
+    const basicPay = totalWasteOfWeek * PaymentPerTon;
+
+    const deficit = Math.max(0, requiredWaste - totalWasteOfWeek);
+
+    const fine = deficit * PaymentPerTon;
+
+    const paymentAmount = basicPay - fine;
+
+    const contractorBill = await prisma.contractorBill.create({
+      data: {
+        stsId,
+        contractorId,
+        billNo: Math.floor(Math.random() * 1000000),
+        weightCollected: totalWasteOfWeek,
+        weightRequired: requiredWaste,
+        fine: fine,
+        paymentPerTon: PaymentPerTon,
+        deficit: deficit,
+        paymentAmount: paymentAmount,
+      },
+    });
+
+    adminLog(
+      "Bill Generated",
+      `Bill Generated for Contractor ${contractorId} for STS ${sts?.name}`
+    );
+
+    res.status(201).json(contractorBill);
+  },
+  { statusCode: 400, message: "Couldn't generate bill" }
+);
+
+const getAllContractorBills = errorWrapper(
+  async (req: Request, res: Response) => {
+    const contractorBills = await prisma.contractorBill.findMany();
+    res.status(200).json(contractorBills);
+  },
+  { statusCode: 404, message: "Contractor Bills not found" }
+);
+
+const getContractorBillById = errorWrapper(
+  async (req: Request, res: Response) => {
+    const { contractorBillId } = req.params;
+    const contractorBill = await prisma.contractorBill.findUnique({
+      where: {
+        id: contractorBillId,
+      },
+    });
+
+    if (!contractorBill) {
+      res.status(404).json({ message: "Contractor Bill not found" });
+    }
+
+    res.status(200).json(contractorBill);
+  },
+  { statusCode: 404, message: "Contractor Bill not found" }
+);
+
+export { generateBillFortheWeek, getAllContractorBills, getContractorBillById };

server/src/prisma/schema.prisma

@@ -158,6 +158,7 @@ model Contractor {
     createdAt          DateTime             @default(now())
     updatedAt          DateTime             @updatedAt
     STSContractorEntry STSContractorEntry[]
+    ContractorBill     ContractorBill[]
 }
 
 model Vehicle {
@@ -189,14 +190,19 @@ model Vehicle {
 }
 
 model STS {
-    id                String    @id @default(uuid())
+    id                String   @id @default(uuid())
     name              String?
     wardNumber        String?
-    capacity          Decimal?  @db.Decimal(10, 2)
-    currentTotalWaste Decimal?  @db.Decimal(10, 2)
-    latitude          Decimal
-    longitude         Decimal
-    Vehicle           Vehicle[]
+    capacity          Decimal? @db.Decimal(10, 2)
+    currentTotalWaste Decimal? @db.Decimal(10, 2)
+
+    requiredWastePerWeek Decimal? @db.Decimal(10, 2)
+    paymentPerTon        Decimal? @db.Decimal(10, 2)
+    fine                 Decimal? @db.Decimal(10, 2)
+
+    latitude  Decimal
+    longitude Decimal
+    Vehicle   Vehicle[]
 
     STSVehicleEntry STSVehicleEntry[]
     manager         User[]
@@ -211,6 +217,7 @@ model STS {
     Area               Area[]
     CollectionPlan     CollectionPlan[]
     STSContractorEntry STSContractorEntry[]
+    ContractorBill     ContractorBill[]
 }
 
 model Landfill {
@@ -257,9 +264,10 @@ model STSContractorEntry {
     contractor   Contractor @relation(fields: [contractorId], references: [id], onDelete: Cascade)
     contractorId String
 
-    wasteType   String?
+    wasteType String?
+
     wasteWeight Decimal?  @db.Decimal(10, 2)
-    entryTime   DateTime?
+    entryTime   DateTime? @default(now())
     exitTime    DateTime?
 
     vehicleNumber String?
@@ -268,6 +276,25 @@ model STSContractorEntry {
     updatedAt DateTime @updatedAt
 }
 
+model ContractorBill {
+    id            String     @id @default(uuid())
+    contractor    Contractor @relation(fields: [contractorId], references: [id], onDelete: Cascade)
+    contractorId  String
+    sts           STS        @relation(fields: [stsId], references: [id], onDelete: Cascade)
+    stsId         String
+    billNo        Int        @unique @default(autoincrement())
+    paymentPerTon Decimal?   @db.Decimal(10, 2)
+    deficit       Decimal?   @db.Decimal(10, 2)
+
+    weightRequired  Decimal? @db.Decimal(10, 2)
+    weightCollected Decimal? @db.Decimal(10, 2)
+    paymentAmount   Decimal? @db.Decimal(10, 2)
+    fine            Decimal? @db.Decimal(10, 2)
+
+    createdAt DateTime @default(now())
+    updatedAt DateTime @updatedAt
+}
+
 model LandfillVehicleEntry {
     id            String    @id @default(uuid())
     landfill      Landfill  @relation(fields: [landfillId], references: [id], onDelete: Cascade)

server/src/prisma/seed.ts

@@ -485,7 +485,10 @@ const stsData: Prisma.STSCreateInput[] = [
     name: "Mohakhali STS",
     wardNumber: "13",
     capacity: 1000,
+    fine: 10.5,
+    paymentPerTon: 10.5,
     currentTotalWaste: 220,
+    requiredWastePerWeek: 500,
     latitude: 23.777742178642388,
     longitude: 90.40575221162331,
   },
@@ -494,6 +497,9 @@ const stsData: Prisma.STSCreateInput[] = [
     name: "Gulshan STS",
     wardNumber: "2",
     capacity: 2000,
+    paymentPerTon: 10.5,
+    fine: 10.5,
+    requiredWastePerWeek: 500,
     currentTotalWaste: 225,
     latitude: 23.792464932754005,
     longitude: 90.40782465254337,
@@ -504,15 +510,21 @@ const stsData: Prisma.STSCreateInput[] = [
     name: "Bonani STS",
     wardNumber: "4",
     capacity: 1500,
+    fine: 10.5,
+    requiredWastePerWeek: 500,
     currentTotalWaste: 240,
+    paymentPerTon: 10.5,
     latitude: 23.793630794902622,
     longitude: 90.40660514416635,
   },
   {
     id: "sts4",
     name: "Badda STS",
+    paymentPerTon: 10.5,
     wardNumber: "4",
+    fine: 10.5,
     capacity: 1500,
+    requiredWastePerWeek: 500,
     currentTotalWaste: 275,
     latitude: 23.78042151306244,
     longitude: 90.42669427037866,
@@ -521,8 +533,11 @@ const stsData: Prisma.STSCreateInput[] = [
     id: "sts5",
     name: "Jatrabari STS",
     wardNumber: "4",
+    fine: 10.5,
+    paymentPerTon: 10.5,
     capacity: 1500,
     currentTotalWaste: 290,
+    requiredWastePerWeek: 500,
     latitude: 23.710484797357275,
     longitude: 90.43479693063576,
   },

server/src/routes/contractor-bills.ts

@@ -0,0 +1,14 @@
+import express from "express";
+const router = express.Router();
+
+import {
+  generateBillFortheWeek,
+  getAllContractorBills,
+  getContractorBillById,
+} from "../controllers/contractorBills";
+
+router.route("/generate").post(generateBillFortheWeek);
+router.route("/").get(getAllContractorBills);
+router.route("/:contractorBillId").get(getContractorBillById);
+
+export default router;

server/src/routes/index.ts

@@ -21,6 +21,7 @@ import employeeRoute from "./employee";
 import collectionPlanRoute from "./collectionPlans";
 import issueRoute from "./issue";
 import stsContractorRoute from "./stsContractor";
+import contractorBillRoute from "./contractor-bills";
 
 router.use("/auth", authRoute);
 router.use("/users", userRoute);
@@ -43,5 +44,6 @@ router.use("/employees", employeeRoute);
 router.use("/collection-plans", collectionPlanRoute);
 router.use("/issues", issueRoute);
 router.use("/sts-contractor-entry", stsContractorRoute);
+router.use("/contractor-bills", contractorBillRoute);
 
 export default router;