import { Injectable, InternalServerErrorException, Logger } from "@nestjs/common";
import { MailerService } from "@nestjs-modules/mailer";
import { SentMessageInfo } from "nodemailer";

import { dateFormat, numberFormat } from "./international.utils";
import { EmailMessage } from "../../../common/enums/message.enum";
import {
  IAnnouncementNotificationData,
  IInvoiceNotificationData,
  IPaymentNotificationData,
  ITicketNotificationData,
  IWalletNotificationData,
} from "../../notifications/interfaces/ISendNotificationData";
import { IBaseNotificationData } from "../../notifications/interfaces/ISendNotificationData";

@Injectable()
export class EmailService {
  private readonly logger = new Logger(EmailService.name);
  constructor(private readonly mailerService: MailerService) { }

  async sendVerificationEmail(to: string, link: string, fullName: string): Promise<SentMessageInfo> {
    try {
      const emailInfo = await this.mailerService.sendMail({
        to: to,

        subject: EmailMessage.EMAIL_VERIFICATION,
        template: "email-verify",
        context: {
          title: EmailMessage.EMAIL_VERIFICATION,
          link,
          fullName,
        },
      });
      console.log(emailInfo);
      return emailInfo;
    } catch (error) {
      this.logger.error("Email sending failed:", error);
      throw new InternalServerErrorException(EmailMessage.EMAIL_SENDING_FAILED);
    }
  }

  async sendLoginEmail(data: IBaseNotificationData) {
    try {
      await this.mailerService.sendMail({
        to: data.userEmail,
        subject: EmailMessage.LOGIN,
        template: "login",
        context: {
          date: dateFormat(new Date()),
        },
      });
    } catch (error) {
      this.logger.error("error in sending login email", error);
    }
  }

  async sendInvoiceEmail(data: IInvoiceNotificationData) {
    try {
      await this.mailerService.sendMail({
        to: data.userEmail,
        subject: EmailMessage.INVOICE,
        template: "invoice",
        context: {
          price: numberFormat(data.price),
          createDate: dateFormat(data.createDate),
          dueDate: dateFormat(data.dueDate),
          invoiceId: data.invoiceId,
        },
      });
    } catch (error) {
      this.logger.error("error in sending invoice email", error);
    }
  }

  async sendWalletEmail(data: IWalletNotificationData) {
    try {
      await this.mailerService.sendMail({
        to: data.userEmail,
        subject: EmailMessage.WALLET,
        template: "wallet",
        context: {
          amount: numberFormat(data.amount),
          balance: numberFormat(data.balance),
          date: dateFormat(data.date),
          reason: data.reason,
        },
      });
    } catch (error) {
      this.logger.error("error in sending wallet email", error);
    }
  }

  async sendTicketEmail(data: ITicketNotificationData) {
    try {
      await this.mailerService.sendMail({
        to: data.userEmail,
        subject: EmailMessage.TICKET,
        template: "ticket",
        context: {
          ticketId: data.ticketId,
          subject: data.subject,
          date: data.date ? dateFormat(data.date) : dateFormat(new Date()),
          user: data.user,
        },
      });
    } catch (error) {
      this.logger.error("error in sending ticket email", error);
    }
  }

  async sendAnnouncementEmail(data: IAnnouncementNotificationData) {
    try {
      await this.mailerService.sendMail({
        to: data.userEmail,
        subject: EmailMessage.ANNOUNCEMENT,
        template: "announcement",
        context: {
          title: data.title,
          description: data.description,
          date: dateFormat(data.date),
        },
      });
    } catch (error) {
      this.logger.error("error in sending announcement email", error);
    }
  }

  async sendPaymentReminderEmail(data: IPaymentNotificationData) {
    try {
      await this.mailerService.sendMail({
        to: data.userEmail,
        subject: EmailMessage.PAYMENT_REMINDER,
        template: "payment-reminder",
        context: {
          amount: numberFormat(data.amount),
        },
      });
    } catch (error) {
      this.logger.error("error in sending payment reminder email", error);
    }
  }

  async sendPaymentCancellationEmail(data: IPaymentNotificationData) {
    try {
      await this.mailerService.sendMail({
        to: data.userEmail,
        subject: EmailMessage.PAYMENT_CANCELLATION,
        template: "payment-cancellation",
        context: {
          amount: numberFormat(data.amount),
        },
      });
    } catch (error) {
      this.logger.error("error in sending payment cancellation email", error);
    }
  }

  async sendAdminNotificationEmail(data: { userEmail: string; title: string; message: string; fullName?: string }) {
    const emailData = {
      to: data.userEmail,
      subject: data.title,
      template: "admin-notification",
      context: {
        title: data.title,
        message: data.message,
        fullName: data.fullName,
      },
    };

    try {
      await this.mailerService.sendMail(emailData);
    } catch (error) {
      this.logger.error("error in sending admin notification email", error);
      // throw new InternalServerErrorException("error in sending admin notification email");
    }
  }

  async sendOtpEmail({ userEmail, otp }: { userEmail: string, otp: string }) {
    try {
      await this.mailerService.sendMail({
        to: userEmail,
        subject: EmailMessage.VERIFY_OTP,
        template: "otp",
        context: {
          otp,
        },
      });
    } catch (error) {
      this.logger.error("error in sending otp email", error);
    }
  }
}