import redis from "../connection/redis";
import tokenModel from "../model/tokenModel";
import nodemailer from "nodemailer";
import userModel from "../model/userModel";
import { hashGenerate, hashValidator } from "../utils/hashing";
import { tokenGenerator, tokenRefreshGenerator } from "../utils/token";
import userDataModel from "../model/userDataModel";

interface Iresponse {
  status: string;
  data?: any;
}
interface Isignup {
  userName: string;
  email: string;
  password: string;
  confirmPassword: string;
}
interface Isignin {
  email: string;
  password: string;
}
interface IforGotPassword {
  email: string;
}

export async function existingUserData(email: string, organization: string) {
  const existingData = await userModel(organization).findOne({
    email: email,
    isArchive: false,
  });
  return existingData;
}
export const signupService = async (data: Isignup): Promise<Iresponse> => {
  const { userName, email, password, confirmPassword } = data;
  try {
    const mailCaseChange = email.toLocaleLowerCase();
    const organization = email.split("@")[1].split(".")[0];
    const mailExistance = await existingUserData(mailCaseChange, organization);
    if (mailExistance !== null) return { status: "User Already exists" };
    if (password !== confirmPassword) {
      return { status: "Passwords do not match" };
    }
    let role;
    const passwordHashed = await hashGenerate(password);
    const userCount = await userModel(organization).countDocuments({});
    role = userCount === 0 ? "Admin" : "Viewer";
    const newUser = await userModel(organization).create({
      userName,
      email: mailCaseChange,
      password: passwordHashed,
      role,
    });
    if (!newUser) return { status: "Signup unsuccessfull" };
    return { status: "Success" };
  } catch (error: unknown) {
    if (error instanceof Error) {
      return {
        status: error.message,
      };
    } else {
      return {
        status: "An unexpected error occurred",
      };
    }
  }
};

export const signinService = async (data: Isignin): Promise<Iresponse> => {
  const { email, password } = data;
  try {
    const mailCaseChange = email.toLocaleLowerCase();
    const organization = email.split("@")[1].split(".")[0];
    const mailExistance = await existingUserData(mailCaseChange, organization);
    if (mailExistance == null)
      return { status: "User not found!!! Kindly Signup" };
    const comparePassword = await hashValidator(
      password,
      mailExistance.password
    );
    if (!comparePassword)
      return { status: "Password is invalid...Check the credentials" };
    const userDataExistence = await userDataModel(organization).findOne({
      userId: mailExistance._id,
      isArchive: false,
    });
    if (!userDataExistence) {
      const userDatacreation = await userDataModel(organization).create({
        userId: mailExistance._id,
      });
    }
    const tokenValidation = tokenGenerator(
      mailExistance.email,
      mailExistance.role,
      mailExistance._id,
      organization
    );
    const refreshTokenvalidation = tokenRefreshGenerator(
      mailExistance.email,
      mailExistance.role,
      mailExistance._id,
      organization
    );
    const existingToken = await tokenModel(organization).findOne({
      userId: mailExistance._id,
      isArchive: false,
    });
    let finalResult;
    if (!existingToken) {
      const tokenSave = await tokenModel(organization).create({
        userId: mailExistance._id,
        isArchive: false,
        refreshToken: refreshTokenvalidation,
      });
      // await redis.setex(
      //   `user:${mailExistance.Email}`,
      //   3600,
      //   JSON.stringify(tokenSave)
      // );
      finalResult = {
        message: "login successfull",
        email: mailExistance.email,
        name: mailExistance.userName,
        userId: mailExistance._id,
        token: tokenValidation,
        refreshToken: refreshTokenvalidation,
      };
    } else {
      finalResult = {
        message: "login successfull",
        email: mailExistance.email,
        name: mailExistance.userName,
        userId: mailExistance._id,
        token: tokenValidation,
        refreshToken: existingToken.refreshToken,
      };
    }
    return { status: "Success", data: finalResult };
  } catch (error: unknown) {
    if (error instanceof Error) {
      return {
        status: error.message,
      };
    } else {
      return {
        status: "An unexpected error occurred",
      };
    }
  }
};

export const forgetPassword = async ({
  email,
}: IforGotPassword): Promise<{ status: string }> => {
  try {
    const mailCaseChange = email.toLocaleLowerCase();
    const organization = email.split("@")[1].split(".")[0];
    const Existing_User = await existingUserData(mailCaseChange, organization);
    if (Existing_User) {
      // if (Existing_User.lastPasswordReset) {
      //   console.log("if2");
      //   const lastPasswordReset = Existing_User.lastPasswordReset;
      //   const now = Date.now();
      //   const timeDiff = now - lastPasswordReset;
      //   const diffInHours = Math.floor(timeDiff / (1000 * 60 * 60));
      //   if (diffInHours < 24)
      //     return {
      //       status: "You can only reset your password once every 24 hours.",
      //     };
      // }
      const transport = nodemailer.createTransport({
        service: "gmail",
        secure: true,
        auth: {
          user: process.env.EMAIL_USER,
          pass: process.env.EMAIL_PASS,
        },
      });
      // const resetToken = tokenGenerator(
      //   email,
      //   Existing_User.Role as string,
      //   Existing_User._id as string,
      //   organization
      // );
      // const userTokenData = await tokenModel(organization).findOne({
      //   userId: Existing_User._id,
      //   isArchive: false,
      // });
      // if (!userTokenData) {
      //   await tokenModel(organization).create({
      //     // Email: Existing_User.Email,
      //     userId: Existing_User._id,
      //     resetToken: resetToken,
      //     resetTokenExpiry: Date.now(),
      //   });
      // } else {
      //   userTokenData.resetToken = resetToken;
      //   userTokenData.resetTokenExpiry = new Date();
      //   await userTokenData.save();
      // }
      const Receiver = {
        from: process.env.EMAIL_USER,
        to: email,
        subject: "Password Reset Request",
        // text: "test mail",
        text: `Click the below link to generate the new password \n ${
          process.env.CLIENT_URL
        }/reset-password/${tokenGenerator(
          email,
          Existing_User.Role as string,
          Existing_User._id as string,
          organization
        )}`,
      };
      await transport.sendMail(Receiver);

      return { status: "Success" };
    } else {
      return { status: "Email not found" };
    }
  } catch (error: unknown) {
    if (error instanceof Error) {
      return {
        status: error.message,
      };
    } else {
      return {
        status: "An unexpected error occurred",
      };
    }
  }
};