import type { HttpContext } from '@adonisjs/core/http';
import User from '#models/user';
import TwoFactorAuthProvider from '#app/services/TwoFactorAuthProvider';
import { StatusCodes } from 'http-status-codes';
import { InvalidArgumentException } from 'node-exceptions';
import { TotpState } from '#contracts/enums';
import BackupCodeStorage, { SecureRandom } from '#services/backup_code_storage';
import BackupCode from '#models/backup_code';

// Here we are generating secret and recovery codes for the user that’s enabling 2FA and storing them to our database.
export default class UserController {
    public async enable({ auth, response, request }: HttpContext) {
        const user = (await User.find(auth.user?.id)) as User;
        // await user.load('totp_secret');
        // if (!user.totp_secret) {
        //     let totpSecret = new TotpSecret();
        //     user.related('totp_secret').save(totpSecret);
        //     await user.load('totp_secret');
        // }

        if (!user) {
            throw new Error('user not available');
        }
        const state: number = request.input('state');

        try {
            switch (state) {
                case TotpState.STATE_DISABLED:
                    // user.twoFactorSecret = null;
                    // user.twoFactorRecoveryCodes = null;
                    await BackupCode.deleteCodes(user);
                    user.twoFactorSecret = '';
                    // user.twoFactorRecoveryCodes = [''];
                    await user.save();

                    user.state = TotpState.STATE_DISABLED;
                    await user.save();

                    let storage = new BackupCodeStorage(new SecureRandom());
                    let backupState = await storage.getBackupCodesState(user);

                    return response.status(StatusCodes.OK).json({
                        state: TotpState.STATE_DISABLED,
                        backupState: backupState,
                    });
                case TotpState.STATE_CREATED:
                    user.twoFactorSecret = TwoFactorAuthProvider.generateSecret(user);
                    user.state = TotpState.STATE_CREATED;
                    await user.save();

                    let qrcode = await TwoFactorAuthProvider.generateQrCode(user);
                    // throw new InvalidArgumentException('code is missing');
                    return response.status(StatusCodes.OK).json({
                        state: user.state,
                        secret: user.twoFactorSecret,
                        url: qrcode.url,
                        svg: qrcode.svg,
                    });
                case TotpState.STATE_ENABLED:
                    let code: string = request.input('code');
                    if (!code) {
                        throw new InvalidArgumentException('code is missing');
                    }
                    const success = await TwoFactorAuthProvider.enable(user, code);

                    return response.status(StatusCodes.OK).json({
                        state: success ? TotpState.STATE_ENABLED : TotpState.STATE_CREATED,
                    });
                default:
                    throw new InvalidArgumentException('Invalid TOTP state');
            }
        } catch (error) {
            return response.status(StatusCodes.INTERNAL_SERVER_ERROR).json({
                message: 'Invalid TOTP state',
            });
        }
    }

    // public async fetchRecoveryCodes({ auth, view }) {
    //     const user = auth?.user;

    //     return view.render('pages/settings', {
    //         twoFactorEnabled: user.isTwoFactorEnabled,
    //         recoveryCodes: user.twoFactorRecoveryCodes,
    //     });
    // }

    /**
     * @NoAdminRequired
     * @PasswordConfirmationRequired
     *
     * @return JSONResponse
     */
    public async createCodes({ auth, response }: HttpContext) {
        // $user = $this->userSession->getUser();
        const user = (await User.find(auth.user?.id)) as User;

        // let codes = TwoFactorAuthProvider.generateRecoveryCodes();
        let storage = new BackupCodeStorage(new SecureRandom());
        // $codes = $this->storage->createCodes($user);
        const codes = await storage.createCodes(user);

        let backupState = await storage.getBackupCodesState(user);
        // return new JSONResponse([
        // 	'codes' => $codes,
        // 	'state' => $this->storage->getBackupCodesState($user),
        // ]);
        return response.status(StatusCodes.OK).json({
            codes: codes,
            // state: success ? TotpState.STATE_ENABLED : TotpState.STATE_CREATED,
            backupState: backupState, //storage.getBackupCodesState(user),
        });
    }
}