chore: delete permission for get ticket categories

src/common/enums/message.enum.ts

@@ -353,6 +353,7 @@ export const enum InvoiceMessage {
   INVOICE_IS_OVERDUE = "فاکتور منقضی شده است",
   INVOICE_PAID = "صورت حساب با موفقیت پرداخت شد",
   DISCOUNT_APPLIED = "تخفیف با موفقیت اعمال شد",
+  DISCOUNT_CANCELLED = "تخفیف با موفقیت لغو شد",
 }
 
 export const enum LearningMessage {
@@ -400,6 +401,7 @@ export const enum DiscountMessage {
   DISCOUNT_CODE_STRING = "کد تخفیف باید یک رشته باشد",
   DISCOUNT_NOT_FOUND = "کد تخفیف یافت نشد یا غیرفعال است",
   DISCOUNT_NOT_APPLICABLE = "این کد تخفیف برای هیچ یک از پلن‌های اشتراک در فاکتور قابل اعمال نیست",
+  ALREADY_USED = "این کد تخفیف قبلا استفاده شده است",
 }
 
 export const enum EmailMessage {

src/modules/announcements/announcement.service.ts

@@ -100,7 +100,7 @@ export class AnnouncementService {
 
     const [, count] = await queryBuilder.skip(skip).take(limit).getManyAndCount();
 
-    const transformedResults = rawResults.map((raw) => ({
+    const announcements = rawResults.map((raw) => ({
       id: raw.announcement_id,
       createdAt: raw.announcement_createdAt,
       updatedAt: raw.announcement_updatedAt,
@@ -117,7 +117,7 @@ export class AnnouncementService {
       isRead: raw.userAnnouncements_isRead ? true : false,
     }));
 
-    return { transformedResults, count };
+    return { announcements, count, paginate: true };
   }
 
   async getOneAnnouncement(id: string, userId: string) {

src/modules/discounts/entities/discount.entity.ts

@@ -1,9 +1,11 @@
 // eslint-disable-next-line import/no-named-as-default
 import Decimal from "decimal.js";
-import { Column, Entity, JoinTable, ManyToMany } from "typeorm";
+import { Column, Entity, JoinTable, ManyToMany, OneToMany } from "typeorm";
 
+import { UsageDiscount } from "./usage-discount.entity";
 import { BaseEntity } from "../../../common/entities/base.entity";
 import { DecimalTransformer } from "../../../common/transformers/decimal.transformer";
+import { Invoice } from "../../invoices/entities/invoice.entity";
 import { SubscriptionPlan } from "../../subscriptions/entities/subscription.entity";
 import { User } from "../../users/entities/user.entity";
 import { DiscountCalculationType, DiscountType } from "../enums/discount-type.enum";
@@ -41,4 +43,10 @@ export class Discount extends BaseEntity {
   @ManyToMany(() => User, (user) => user.discounts, { nullable: true })
   @JoinTable()
   users: User[];
+
+  @OneToMany(() => Invoice, (invoice) => invoice.discount)
+  invoice: Invoice;
+
+  @OneToMany(() => UsageDiscount, (usageDiscount) => usageDiscount.discount)
+  usages: UsageDiscount[];
 }

src/modules/discounts/entities/usage-discount.entity.ts

@@ -0,0 +1,18 @@
+import { Column, Entity, JoinTable, ManyToMany, ManyToOne } from "typeorm";
+
+import { Discount } from "./discount.entity";
+import { BaseEntity } from "../../../common/entities/base.entity";
+import { User } from "../../users/entities/user.entity";
+
+@Entity()
+export class UsageDiscount extends BaseEntity {
+  @Column({ type: "timestamptz" })
+  usageDate: Date;
+
+  @ManyToOne(() => Discount, (discount) => discount.usages)
+  discount: Discount;
+
+  @ManyToMany(() => User, (user) => user.usageDiscounts)
+  @JoinTable()
+  users: User[];
+}

src/modules/discounts/repositories/usage-discount.repository.ts

@@ -0,0 +1,12 @@
+import { Injectable } from "@nestjs/common";
+import { InjectRepository } from "@nestjs/typeorm";
+import { Repository } from "typeorm";
+
+import { UsageDiscount } from "../entities/usage-discount.entity";
+
+@Injectable()
+export class UsageDiscountRepository extends Repository<UsageDiscount> {
+  constructor(@InjectRepository(UsageDiscount) usageDiscountRepository: Repository<UsageDiscount>) {
+    super(usageDiscountRepository.target, usageDiscountRepository.manager, usageDiscountRepository.queryRunner);
+  }
+}

src/modules/invoices/DTO/apply-discount-invoice.dto.ts

@@ -1,12 +1,10 @@
+import { ApiProperty } from "@nestjs/swagger";
 import { IsNotEmpty, IsString } from "class-validator";
 
 import { DiscountMessage } from "../../../common/enums/message.enum";
 
 export class ApplyDiscountDto {
-  @IsString({ message: DiscountMessage.INVOICE_ID_STRING })
-  @IsNotEmpty({ message: DiscountMessage.INVOICE_ID_REQUIRED })
-  invoiceId: string;
-
+  @ApiProperty({ description: "Discount code" })
   @IsString({ message: DiscountMessage.DISCOUNT_CODE_STRING })
   @IsNotEmpty({ message: DiscountMessage.DISCOUNT_CODE_REQUIRED })
   discountCode: string;

src/modules/invoices/invoices.controller.ts

@@ -16,6 +16,8 @@ import { PermissionEnum } from "../users/enums/permission.enum";
 export class InvoicesController {
   constructor(private readonly invoiceService: InvoicesService) {}
 
+  /**************************************** */
+
   @ApiOperation({ summary: "create an invoice ==> admin route" })
   @PermissionsDec(PermissionEnum.INVOICES)
   @AuthGuards()
@@ -24,6 +26,8 @@ export class InvoicesController {
     return this.invoiceService.createInvoiceAdmin(createDto);
   }
 
+  /**************************************** */
+
   @ApiOperation({ summary: "get all invoices ==> admin route" })
   @AuthGuards()
   @PermissionsDec(PermissionEnum.INVOICES)
@@ -33,6 +37,8 @@ export class InvoicesController {
     return this.invoiceService.getInvoices(queryDto);
   }
 
+  /**************************************** */
+
   @ApiOperation({ summary: "get all user invoices" })
   @AuthGuards()
   @Pagination()
@@ -41,6 +47,8 @@ export class InvoicesController {
     return this.invoiceService.getUserInvoices(queryDto, userId);
   }
 
+  /**************************************** */
+
   @ApiOperation({ summary: "get single invoice by Id " })
   @AuthGuards()
   @Get(":id")
@@ -48,6 +56,8 @@ export class InvoicesController {
     return this.invoiceService.getInvoiceById(paramDto.id, isAdmin, userId);
   }
 
+  /**************************************** */
+
   @ApiOperation({ summary: "approve invoice by user" })
   @AuthGuards()
   @Patch(":id/approve")
@@ -55,8 +65,30 @@ export class InvoicesController {
     return this.invoiceService.approveInvoiceByUser(paramDto.id, userId);
   }
 
+  /**************************************** */
+
+  @ApiOperation({ summary: "apply discount on invoice by user" })
+  @AuthGuards()
   @Post(":id/apply-discount")
-  async applyDiscount(@Param() paramDto: ParamDto, @Body() applyDiscountDto: ApplyDiscountDto) {
-    return this.invoiceService.applyDiscount(paramDto.id, applyDiscountDto);
+  async applyDiscount(@Param() paramDto: ParamDto, @Body() applyDiscountDto: ApplyDiscountDto, @UserDec("id") userId: string) {
+    return this.invoiceService.applyDiscount(paramDto.id, applyDiscountDto, userId);
+  }
+
+  /**************************************** */
+
+  @ApiOperation({ summary: "cancel discount by user" })
+  @AuthGuards()
+  @Post(":id/cancel-discount")
+  cancelDiscount(@Param() paramDto: ParamDto, @UserDec("id") userId: string) {
+    return this.invoiceService.cancelDiscount(paramDto.id, userId);
+  }
+
+  /**************************************** */
+
+  @ApiOperation({ summary: "pay invoice by user" })
+  @AuthGuards()
+  @Post(":id/pay")
+  async payInvoice(@Param() paramDto: ParamDto, @UserDec("id") userId: string) {
+    return this.invoiceService.payInvoice(paramDto.id, userId);
   }
 }

src/modules/invoices/invoices.module.ts

@@ -7,11 +7,15 @@ import { InvoicesController } from "./invoices.controller";
 import { InvoicesService } from "./providers/invoices.service";
 import { InvoicesRepository } from "./repositories/invoices.repository";
 import { Discount } from "../discounts/entities/discount.entity";
+import { UsageDiscount } from "../discounts/entities/usage-discount.entity";
 import { DiscountRepository } from "../discounts/repositories/discount.repository";
+import { UsageDiscountRepository } from "../discounts/repositories/usage-discount.repository";
+import { UsersModule } from "../users/users.module";
+import { WalletsModule } from "../wallets/wallets.module";
 
 @Module({
-  imports: [TypeOrmModule.forFeature([Invoice, InvoiceItem, Discount])],
-  providers: [InvoicesService, InvoicesRepository, DiscountRepository],
+  imports: [TypeOrmModule.forFeature([Invoice, InvoiceItem, Discount, UsageDiscount]), UsersModule, WalletsModule],
+  providers: [InvoicesService, InvoicesRepository, DiscountRepository, UsageDiscountRepository],
   controllers: [InvoicesController],
   exports: [InvoicesService],
 })

src/modules/invoices/providers/invoices.service.ts

@@ -1,13 +1,18 @@
 import { BadRequestException, Injectable } from "@nestjs/common";
 // eslint-disable-next-line import/no-named-as-default
 import dayjs from "dayjs";
+// eslint-disable-next-line import/no-named-as-default
 import Decimal from "decimal.js";
-import { QueryRunner } from "typeorm";
+import { DataSource, QueryRunner } from "typeorm";
 
-import { DiscountMessage, InvoiceMessage } from "../../../common/enums/message.enum";
+import { DiscountMessage, InvoiceMessage, WalletMessage } from "../../../common/enums/message.enum";
 import { DiscountRepository } from "../../discounts/repositories/discount.repository";
+import { UsageDiscountRepository } from "../../discounts/repositories/usage-discount.repository";
 import { SubscriptionPlan } from "../../subscriptions/entities/subscription.entity";
+import { UsersService } from "../../users/providers/users.service";
 import { PaginationUtils } from "../../utils/providers/pagination.utils";
+import { Wallet } from "../../wallets/entities/wallet.entity";
+import { WalletsService } from "../../wallets/providers/wallets.service";
 import { ApplyDiscountDto } from "../DTO/apply-discount-invoice.dto";
 import { CreateInvoiceDto } from "../DTO/create-invoice.dto";
 import { InvoicesSearchQueryDto, UserInvoicesSearchQueryDto } from "../DTO/invoices-search-query.dto";
@@ -21,6 +26,10 @@ export class InvoicesService {
   constructor(
     private readonly invoiceRepository: InvoicesRepository,
     private readonly discountRepository: DiscountRepository,
+    private readonly usageDiscountRepository: UsageDiscountRepository,
+    private readonly usersService: UsersService,
+    private readonly walletsService: WalletsService,
+    private readonly dataSource: DataSource,
     // private readonly invoiceItemsRepository: InvoiceItemsRepository,
   ) {}
 
@@ -198,8 +207,56 @@ export class InvoicesService {
 
   //*********************************** */
 
-  async applyDiscount(invoiceId: string, applyDiscountDto: ApplyDiscountDto) {
-    const invoice = await this.invoiceRepository.findOneBy({ id: invoiceId });
+  async payInvoice(invoiceId: string, userId: string) {
+    const queryRunner = this.dataSource.createQueryRunner();
+    await queryRunner.connect();
+    await queryRunner.startTransaction();
+    try {
+      const user = await this.usersService.findOneByIdWithQueryRunner(userId, queryRunner);
+
+      const invoice = await this.getPendingInvoiceByIdWithQueryRunner(invoiceId, user.id, queryRunner);
+
+      const userWallet = await this.walletsService.getWalletByUserId(user.id, queryRunner);
+
+      if (new Decimal(userWallet.balance).lessThan(invoice.totalPrice)) throw new BadRequestException(WalletMessage.INSUFFICIENT_BALANCE);
+
+      userWallet.balance = new Decimal(userWallet.balance).sub(invoice.totalPrice);
+
+      await queryRunner.manager.save(Wallet, userWallet);
+
+      await this.walletsService.createInvoiceTransaction(invoice.totalPrice, userWallet.id, queryRunner);
+
+      invoice.status = InvoiceStatus.PAID;
+      invoice.paidAt = new Date();
+
+      await queryRunner.manager.save(Invoice, invoice);
+      console.log(invoice);
+      await queryRunner.commitTransaction();
+      return {
+        message: InvoiceMessage.INVOICE_PAID,
+        invoice,
+      };
+    } catch (error) {
+      await queryRunner.rollbackTransaction();
+      throw error;
+    } finally {
+      await queryRunner.release();
+    }
+  }
+
+  //*********************************** */
+
+  async getPendingInvoiceByIdWithQueryRunner(invoiceId: string, userId: string, queryRunner: QueryRunner) {
+    const invoice = await queryRunner.manager.findOneBy(Invoice, { user: { id: userId }, status: InvoiceStatus.PENDING, id: invoiceId });
+    console.log(invoice, invoiceId, userId);
+    if (!invoice) throw new BadRequestException(InvoiceMessage.NOT_FOUND_BY_ID);
+    return invoice;
+  }
+
+  //*********************************** */
+
+  async applyDiscount(invoiceId: string, applyDiscountDto: ApplyDiscountDto, userId: string) {
+    const invoice = await this.invoiceRepository.findOneBy({ id: invoiceId, status: InvoiceStatus.PENDING });
     if (!invoice) throw new BadRequestException(InvoiceMessage.NOT_FOUND_BY_ID);
 
     const discount = await this.discountRepository.findOne({
@@ -210,6 +267,9 @@ export class InvoicesService {
       throw new BadRequestException(DiscountMessage.NOT_FOUND);
     }
 
+    const hasUsedDiscount = await this.hasUserUsedDiscount(userId, discount.id);
+    if (hasUsedDiscount) throw new BadRequestException(DiscountMessage.ALREADY_USED);
+
     if (discount.subscriptionPlans && discount.subscriptionPlans.length > 0) {
       const isApplicable = invoice.items.some((item) => {
         const subscriptionPlan = item.subscriptionPlan;
@@ -222,15 +282,82 @@ export class InvoicesService {
     }
 
     if (discount.users && discount.users.length > 0) {
-      if (!invoice.user || !discount.users.some((user) => user.id === invoice.user.id)) {
-        throw new BadRequestException("This discount is not applicable for this user.");
+      if (!discount.users.some((user) => user.id === userId)) {
+        throw new BadRequestException(DiscountMessage.CAN_NOT_APPLICABLE);
       }
     }
 
-    invoice.discount = discount;
+    const discountAmount =
+      discount.calculationType === "PERCENTAGE"
+        ? new Decimal(invoice.totalPrice).mul(discount.amount).div(100)
+        : new Decimal(discount.amount);
+
+    invoice.totalPrice = new Decimal(invoice.totalPrice).minus(discountAmount);
     await this.invoiceRepository.save(invoice);
 
-    return { invoice };
+    const usageDiscount = this.usageDiscountRepository.create({
+      discount,
+      users: [{ id: userId }],
+      usageDate: new Date(),
+    });
+
+    await this.usageDiscountRepository.save(usageDiscount);
+
+    return {
+      message: InvoiceMessage.DISCOUNT_APPLIED,
+      invoice,
+    };
+  }
+
+  async cancelDiscount(invoiceId: string, userId: string) {
+    const invoice = await this.invoiceRepository.findOneBy({ id: invoiceId, status: InvoiceStatus.PENDING });
+    if (!invoice) throw new BadRequestException(InvoiceMessage.NOT_FOUND_BY_ID);
+
+    const usage = await this.usageDiscountRepository.findOne({
+      where: {
+        users: {
+          id: userId,
+        },
+      },
+      relations: {
+        discount: true,
+      },
+    });
+
+    console.log(usage);
+    if (!usage) throw new BadRequestException(DiscountMessage.NOT_FOUND);
+
+    const discount = await this.discountRepository.findOneBy({ id: usage.discount.id });
+    if (!discount) throw new BadRequestException(DiscountMessage.NOT_FOUND);
+
+    const discountAmount =
+      discount.calculationType === "PERCENTAGE"
+        ? new Decimal(invoice.totalPrice).mul(discount.amount).div(100)
+        : new Decimal(discount.amount);
+
+    invoice.totalPrice = new Decimal(invoice.totalPrice).add(discountAmount);
+    await this.invoiceRepository.save(invoice);
+
+    await this.usageDiscountRepository.delete(usage.id);
+
+    return {
+      message: InvoiceMessage.DISCOUNT_CANCELLED,
+      invoice,
+    };
+  }
+
+  private async hasUserUsedDiscount(userId: string, discountId: string): Promise<boolean> {
+    const usage = await this.usageDiscountRepository.findOne({
+      where: {
+        users: {
+          id: userId,
+        },
+        discount: {
+          id: discountId,
+        },
+      },
+    });
+    return !!usage;
   }
 
   // async calculateFinalPrice(invoiceId: string): Promise<Decimal> {

src/modules/users/entities/user.entity.ts

@@ -11,6 +11,7 @@ import { UserAnnouncement } from "../../announcements/entities/user-announcement
 import { Criticism } from "../../criticisms/entities/criticism.entity";
 import { DanakServiceReview } from "../../danak-services/entities/danak-service-review.entity";
 import { Discount } from "../../discounts/entities/discount.entity";
+import { UsageDiscount } from "../../discounts/entities/usage-discount.entity";
 import { Invoice } from "../../invoices/entities/invoice.entity";
 import { LearningProgress } from "../../learnings/entities/learning-progress.entity";
 import { Notification } from "../../notifications/entities/notification.entity";
@@ -114,6 +115,9 @@ export class User extends BaseEntity {
   @OneToOne(() => Address, (address) => address.user, { cascade: true, nullable: true })
   @JoinColumn()
   address: Address;
+
+  @ManyToMany(() => UsageDiscount, (usageDiscount) => usageDiscount.users)
+  usageDiscounts: UsageDiscount[];
 }
 
 // @ManyToMany(() => DanakService, (danakService) => danakService.users)

src/modules/wallets/providers/wallets.service.ts

@@ -184,4 +184,19 @@ export class WalletsService {
     if (!wallet) throw new BadRequestException(WalletMessage.WALLET_NOT_FOUND);
     return wallet;
   }
+
+  //*********************************** */
+
+  async createInvoiceTransaction(amount: Decimal, walletId: string, queryRunner: QueryRunner) {
+    const transaction = queryRunner.manager.create(WalletTransaction, {
+      amount,
+      wallet: { id: walletId },
+      type: TransactionType.DEBIT,
+      description: WalletMessage.INVOICE_WALLET_TRANSFER,
+    });
+
+    await queryRunner.manager.save(WalletTransaction, transaction);
+
+    return transaction;
+  }
 }