import type { HttpContext } from '@adonisjs/core/http';
import User from '#models/user';
import BackupCode from '#models/backup_code';
// import Hash from '@ioc:Adonis/Core/Hash';
// import InvalidCredentialException from 'App/Exceptions/InvalidCredentialException';
import { authValidator } from '#validators/auth';
import hash from '@adonisjs/core/services/hash';

import TwoFactorAuthProvider from '#app/services/TwoFactorAuthProvider';
// import { Authenticator } from '@adonisjs/auth';
// import { LoginState } from 'Contracts/enums';
// import { StatusCodes } from 'http-status-codes';

// interface MyHttpsContext extends HttpContext {
//     auth: Authenticator<User>
//   }
export default class AuthController {
    //   login function{ request, auth, response }:HttpContext
    public async login({ request, response, auth, session }: HttpContext) {
        // console.log({
        // 	registerBody: request.body(),
        // });
        // await request.validate(AuthValidator);
        await request.validateUsing(authValidator);

        // const plainPassword = await request.input('password');
        // const email = await request.input('email');
        // grab uid and password values off request body
        const { email, password } = request.only(['email', 'password']);

        try {
            // // attempt to verify credential and login user
            // await auth.use('web').attempt(email, plainPassword);

            // const user = await auth.use('web').verifyCredentials(email, password);
            const user = await User.verifyCredentials(email, password);

            if (user.isTwoFactorEnabled) {
                // session.put("login.id", user.id);
                // return view.render("pages/two-factor-challenge");

                session.flash('user_id', user.id);
                return response.redirect().back();

                // let state = LoginState.STATE_VALIDATED;
                // return response.status(StatusCodes.OK).json({
                //     state: state,
                //     new_user_id: user.id,
                // });
            }

            await auth.use('web').login(user);
        } catch (error) {
            // if login fails, return vague form message and redirect back
            session.flash('message', 'Your username, email, or password is incorrect');
            return response.redirect().back();
        }

        // otherwise, redirect todashboard
        response.redirect('/apps/dashboard');
    }

    public async twoFactorChallenge({ request, session, auth, response }: HttpContext) {
        const { code, backup_code, login_id } = request.only(['code', 'backup_code', 'login_id']);      
        const user = await User.query().where('id', login_id).firstOrFail();

        if (code) {
            const isValid = await TwoFactorAuthProvider.validate(user, code);
            if (isValid) {
                // login user and redirect to dashboard
                await auth.use('web').login(user);
                response.redirect('/apps/dashboard');
            } else {
                session.flash('message', 'Your two-factor code is incorrect');
            return response.redirect().back();
            }
        } else if (backup_code) {
            const codes: BackupCode[] = await user.getBackupCodes();
          
            // const verifiedBackupCodes = await Promise.all(
            //     codes.map(async (backupCode) => {
            //         let isVerified = await hash.verify(backupCode.code, backup_code);
            //         if (isVerified) {
            //             return backupCode;
            //         }
            //     }),
            // );
            // const backupCodeToDelete = verifiedBackupCodes.find(Boolean);

            let backupCodeToDelete = null;
            for (const backupCode of codes) {
                const isVerified = await hash.verify(backupCode.code, backup_code);
                if (isVerified) {
                    backupCodeToDelete = backupCode;
                    break;
                }
            }

            if (backupCodeToDelete) {   
                    if (backupCodeToDelete.used === false) {
                        backupCodeToDelete.used = true;
                        await backupCodeToDelete.save();
                        console.log(`BackupCode with id ${backupCodeToDelete.id} has been marked as used.`);
                        await auth.use('web').login(user);
                        response.redirect('/apps/dashboard');
                    } else {
                        session.flash('message', 'BackupCode already used');
                        return response.redirect().back();
                    }                              
            } else {
                session.flash('message', 'BackupCode not found');
                return response.redirect().back();
            }           
        }
    }

    //   logout function
    public async logout({ auth, response }: HttpContext) {
        // await auth.logout();
        await auth.use('web').logout();
        return response.redirect('/app/login');
        // return response.status(200);
    }
}