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import { forwardRef, HttpException, HttpStatus, Inject, Injectable } from "@nestjs/common";
import { InjectModel } from "@nestjs/sequelize";
import { Invoice } from "./entities/invoice.entity";
import { CartService } from "src/cart/cart.service";
import { User } from "src/users/entities/user.entity";
@Injectable()
export class InvoiceService {
constructor(
@InjectModel(Invoice) private readonly invoiceModel: typeof Invoice,
@Inject(forwardRef(() => CartService))
private cartService: CartService,
) {}
async createInvoiceFromCart(userId: number): Promise<Invoice> {
const user = await User.findByPk(userId);
if (!user) {
throw new HttpException("User not found", HttpStatus.NOT_FOUND);
}
try {
const invoice = await this.invoiceModel.create({
userId,
totalPaymentAmount: 0,
});
if (!invoice) {
throw new HttpException("Failed to create invoice", HttpStatus.INTERNAL_SERVER_ERROR);
}
return invoice;
} catch (error) {
console.error("Error during invoice creation:", error);
throw new HttpException("An error occurred while creating the invoice.", HttpStatus.INTERNAL_SERVER_ERROR);
}
}
async updateTotalPayment(userId: number) {
const user = await User.findByPk(userId);
if (!user) {
throw new HttpException("User not found", HttpStatus.NOT_FOUND);
}
const userCartItems = await this.cartService.getUserOpenCart(userId);
if (!userCartItems || !userCartItems.cartItems || userCartItems.cartItems.length === 0) {
throw new HttpException("Cart is empty", HttpStatus.BAD_REQUEST);
}
let invoice = await this.invoiceModel.findOne({ where: { userId, status: "pending" } });
if (!invoice) {
throw new HttpException("Invoice not found", HttpStatus.NOT_FOUND);
}
invoice.totalPaymentAmount = userCartItems.totalPrice;
await invoice.save();
}
async getInvoicePendingByUser(userId: number): Promise<Invoice> {
try {
if (!userId) {
throw new HttpException("User ID are required.", HttpStatus.BAD_REQUEST);
}
const invoice = await this.invoiceModel.findOne({
where: { userId, status: "pending" },
});
if (!invoice) {
throw new HttpException("Invoice not found for this user and cart.", HttpStatus.NOT_FOUND);
}
return invoice;
} catch (error) {
if (error instanceof HttpException) {
throw error;
}
throw new HttpException("An error occurred while retrieving the invoice.", HttpStatus.INTERNAL_SERVER_ERROR);
}
}
async getInvoiceByUser(userId: number) {
try {
if (!userId) {
throw new HttpException("User ID are required.", HttpStatus.BAD_REQUEST);
}
const invoices = await this.invoiceModel.findAll({
where: { userId },
});
if (!invoices) {
throw new HttpException("Invoice not found for this user and cart.", HttpStatus.NOT_FOUND);
}
return { invoices };
} catch (error) {
if (error instanceof HttpException) {
throw error;
}
throw new HttpException("An error occurred while retrieving the invoice.", HttpStatus.INTERNAL_SERVER_ERROR);
}
}
async getInvoices() {
try {
const invoices = await this.invoiceModel.findAll();
if (!invoices) {
throw new HttpException("Invoice not found for this user and cart.", HttpStatus.NOT_FOUND);
}
return { invoices };
} catch (error) {
if (error instanceof HttpException) {
throw error;
}
throw new HttpException("An error occurred while retrieving the invoice.", HttpStatus.INTERNAL_SERVER_ERROR);
}
}
async getUserInvoices(userId: number) {
try {
if (!userId) {
throw new HttpException("User ID are required.", HttpStatus.BAD_REQUEST);
}
const invoices = await this.invoiceModel.findAll({
where: { userId },
});
if (!invoices) {
throw new HttpException("Invoice not found for this user and cart.", HttpStatus.NOT_FOUND);
}
return { invoices };
} catch (error) {
if (error instanceof HttpException) {
throw error;
}
throw new HttpException("An error occurred while retrieving the invoice.", HttpStatus.INTERNAL_SERVER_ERROR);
}
}
}