const {
  getAllNotificationDb,
  getNotificationByIdDb,
  InsertNotificationErrorDb,
  getUsersNotificationErrorDb,
  updateNotificationErrorDb,
} = require("../db/notification_error.db");

const { getErrorCodeByIdDb } = require("../db/brand_code.db");

const { getSolutionsByErrorCodeIdDb } = require("../db/brand_code_solution.db");

const {
  getAllNotificationErrorLogDb,
  getNotificationErrorLogByNotificationErrorIdDb,
} = require("../db/notification_error_log.db");

const { getSparepartsByErrorCodeIdDb } = require("../db/brand_sparepart.db");

const {
  getNotificationErrorByIdDb,
} = require("../db/notification_error_user.db");

const { getFileUploadByPathDb } = require("../db/file_uploads.db");

const {
  generateTokenRedirect,
  shortUrltiny,
  sendNotifikasi,
} = require("../db/notification_wa.db");

const { ErrorHandler } = require("../helpers/error");

class NotificationService {
  static async getAllNotification(param) {
    try {
      const results = await getAllNotificationDb(param);

      if (results && Array.isArray(results.data)) {
        results.data = await Promise.all(
          results.data.map(async (notification) => {
            const usersNotification =
              (await getUsersNotificationErrorDb(
                notification.notification_error_id
              )) || [];
            return {
              ...notification,
              users: usersNotification,
            };
          })
        );
      }
      return results;
    } catch (error) {
      throw new ErrorHandler(error.statusCode, error.message);
    }
  }

  static async createNotificationError(data) {
    try {
      if (!data || typeof data !== "object") data = {};

      const result = await InsertNotificationErrorDb(data);

      return result;
    } catch (error) {
      return error;
    }
  }

  static async getNotificationById(id) {
    try {
      const notification = await getNotificationByIdDb(id);

      if (
        !notification ||
        (Array.isArray(notification) && notification.length < 1)
      ) {
        throw new ErrorHandler(404, "Notification not found");
      }

      const usersNotification = (await getUsersNotificationErrorDb(id)) || [];

      // Get error code details if error_code_id exists
      if (notification.error_code_id) {
        const errorCode = await getErrorCodeByIdDb(notification.error_code_id);

        if (errorCode) {
          // Get solutions for this error code
          const solutions =
            (await getSolutionsByErrorCodeIdDb(errorCode.error_code_id)) || [];

          const spareparts =
            (await getSparepartsByErrorCodeIdDb(errorCode.error_code_id)) || [];

          const solutionsWithDetails = await Promise.all(
            solutions.map(async (solution) => {
              let fileData = null;
              if (
                solution.path_solution &&
                solution.type_solution &&
                solution.type_solution !== "text"
              ) {
                try {
                  fileData = await getFileUploadByPathDb(
                    solution.path_solution
                  );
                } catch (e) {
                  fileData = null;
                }
              }
              return {
                ...solution,
                file_upload_name: fileData?.file_upload_name || null,
                path_document: fileData?.path_document || null,
              };
            })
          );

          notification.error_code = {
            ...errorCode,
            solution: solutionsWithDetails,
            spareparts: spareparts,
          };
        }
      }

      // Get activity logs for this notification
      const notificationLogs =
        (await getNotificationErrorLogByNotificationErrorIdDb(id)) || [];

      notification.users = usersNotification;

      notification.activity_logs = notificationLogs;

      return notification;
    } catch (error) {
      throw new ErrorHandler(error.statusCode, error.message);
    }
  }

  static async updateNotificationError(notification_error_id, data) {
    try {
      const dataExist = await getNotificationErrorByIdDb(notification_error_id);

      if (!dataExist || (Array.isArray(dataExist) && dataExist.length < 1)) {
        throw new ErrorHandler(404, "Notification Error User not found");
      }

      const notification = Array.isArray(dataExist) ? dataExist[0] : dataExist;

      if (notification.is_read === true) {
        return { success: true, message: "Notification has already been read" };
      }

      if (!notification.is_read) {
        const updateStatus = await updateNotificationErrorDb(
          notification_error_id,
          { is_read: true }
        );

        if (!updateStatus) {
          throw new ErrorHandler(500, "Failed to update notification");
        }
      }

      return { success: true, message: "Notification marked as read" };
    } catch (error) {
      throw new ErrorHandler(error.statusCode || 500, error.message);
    }
  }

  static async resendNotification(id) {
    const deviceNotification = await getNotificationByIdDb(id);
    if (!deviceNotification) throw new ErrorHandler(404, "Data not found");

    const errorCode = await getErrorCodeByIdDb(deviceNotification.error_code_id);
    const dataExist = await getUsersNotificationErrorDb(id);
    const activeUsers = dataExist?.filter((user) => user.is_active === true) || [];

    if (activeUsers.length < 1) throw new ErrorHandler(404, "No active contacts");

    this._executeResendInBackground(id, activeUsers, deviceNotification, errorCode)
        .catch(err => console.log("error:", err));

    return {
        status: "success",
        message: "Pesan sedang diproses di background",
        count: activeUsers.length
    };
}

static async _executeResendInBackground(id, activeUsers, deviceNotification, errorCode) {
    console.log(`Background process untuk ID: ${id}`);

    for (const user of activeUsers) {
        try {
            console.log(`Mengirim ke: ${user.contact_phone}`);

            const tokenRedirect = await generateTokenRedirect(user.contact_phone, user.contact_name, id);
            const encodedToken = encodeURIComponent(tokenRedirect);
            
            const shortUrl = await shortUrltiny(encodedToken);
            console.log(`Link: ${shortUrl}`);

            const bodyWithUrl = `Hai ${user.contact_name || "-"}\n` +
                `Terjadi peringatan dengan kode ${errorCode?.error_code || "-"} - ${errorCode?.error_code_name}  pada device ${deviceNotification.device_name || "-"}.\n` +
                `silahkan cek detail pada link berikut:\n ${shortUrl}`;

            const resultSend = await sendNotifikasi(user.contact_phone, bodyWithUrl);
            
            console.log(`WHATSAPP API Respon:`, JSON.stringify(resultSend));

            const isSuccess = !resultSend?.error;

            await updateNotificationErrorDb(user.notification_error_id, {
                is_send: isSuccess,
                is_delivered: isSuccess,
            });

        } catch (err) {
            console.log(`error pada ${user.contact_phone}:`, err.message);
        }
    }
    console.log(` pesan untuk ID: ${id} selesai diproses.`);
}
}

module.exports = NotificationService;