import React, { useState } from 'react';
import Form from 'react-bootstrap/Form';
import FormControl from 'react-bootstrap/FormControl';
import constants from 'utils/strings/constants';
import { Formik, FormikHelpers } from 'formik';
import * as Yup from 'yup';
import { getOtt } from 'services/userService';
import Card from 'react-bootstrap/Card';
import { setData, LS_KEYS } from 'utils/storage/localStorage';
import { useRouter } from 'next/router';
import SubmitButton from 'components/SubmitButton';
import { Button } from 'react-bootstrap';
import {
    generateAndSaveIntermediateKeyAttributes,
    generateKeyAttributes,
    SaveKeyInSessionStore,
} from 'utils/crypto';
import { setJustSignedUp } from 'utils/storage';
import LogoImg from './LogoImg';
import { logError } from 'utils/sentry';
import { SESSION_KEYS } from 'utils/storage/sessionStorage';
import { PAGES } from 'types';

interface FormValues {
    email: string;
    passphrase: string;
    confirm: string;
}

interface SignUpProps {
    login: () => void;
}

export default function SignUp(props: SignUpProps) {
    const router = useRouter();
    const [acceptTerms, setAcceptTerms] = useState(false);
    const [loading, setLoading] = useState(false);

    const registerUser = async (
        { email, passphrase, confirm }: FormValues,
        { setFieldError }: FormikHelpers<FormValues>
    ) => {
        setLoading(true);
        try {
            try {
                setData(LS_KEYS.USER, { email });
                await getOtt(email);
            } catch (e) {
                setFieldError(
                    'confirm',
                    `${constants.UNKNOWN_ERROR} ${e.message}`
                );
                throw e;
            }
            try {
                if (passphrase === confirm) {
                    const { keyAttributes, masterKey } =
                        await generateKeyAttributes(passphrase);
                    setData(LS_KEYS.ORIGINAL_KEY_ATTRIBUTES, keyAttributes);
                    await generateAndSaveIntermediateKeyAttributes(
                        passphrase,
                        keyAttributes,
                        masterKey
                    );

                    await SaveKeyInSessionStore(
                        SESSION_KEYS.ENCRYPTION_KEY,
                        masterKey
                    );
                    setJustSignedUp(true);
                    router.push(PAGES.VERIFY);
                } else {
                    setFieldError('confirm', constants.PASSPHRASE_MATCH_ERROR);
                }
            } catch (e) {
                setFieldError(
                    'passphrase',
                    constants.PASSWORD_GENERATION_FAILED
                );
                throw e;
            }
        } catch (err) {
            logError(err, 'signup failed');
        }
        setLoading(false);
    };

    return (
        <>
            <Card.Title style={{ marginBottom: '32px' }}>
                <LogoImg src="/icon.svg" />
                {constants.SIGN_UP}
            </Card.Title>
            <Formik<FormValues>
                initialValues={{
                    email: '',
                    passphrase: '',
                    confirm: '',
                }}
                validationSchema={Yup.object().shape({
                    email: Yup.string()
                        .email(constants.EMAIL_ERROR)
                        .required(constants.REQUIRED),
                    passphrase: Yup.string().required(constants.REQUIRED),
                    confirm: Yup.string().required(constants.REQUIRED),
                })}
                validateOnChange={false}
                validateOnBlur={false}
                onSubmit={registerUser}>
                {({
                    values,
                    errors,
                    touched,
                    handleChange,
                    handleSubmit,
                }): JSX.Element => (
                    <Form noValidate onSubmit={handleSubmit}>
                        <Form.Group controlId="registrationForm.email">
                            <Form.Control
                                type="email"
                                placeholder={constants.ENTER_EMAIL}
                                value={values.email}
                                onChange={handleChange('email')}
                                isInvalid={Boolean(
                                    touched.email && errors.email
                                )}
                                autoFocus
                                disabled={loading}
                            />
                            <FormControl.Feedback type="invalid">
                                {errors.email}
                            </FormControl.Feedback>
                        </Form.Group>
                        <Form.Group>
                            <Form.Control
                                type="password"
                                placeholder={constants.PASSPHRASE_HINT}
                                value={values.passphrase}
                                onChange={handleChange('passphrase')}
                                isInvalid={Boolean(
                                    touched.passphrase && errors.passphrase
                                )}
                                disabled={loading}
                            />
                            <Form.Control.Feedback type="invalid">
                                {errors.passphrase}
                            </Form.Control.Feedback>
                        </Form.Group>
                        <Form.Group>
                            <Form.Control
                                type="password"
                                placeholder={constants.RE_ENTER_PASSPHRASE}
                                value={values.confirm}
                                onChange={handleChange('confirm')}
                                isInvalid={Boolean(
                                    touched.confirm && errors.confirm
                                )}
                                disabled={loading}
                            />
                            <Form.Control.Feedback type="invalid">
                                {errors.confirm}
                            </Form.Control.Feedback>
                        </Form.Group>
                        <Form.Group
                            style={{
                                marginBottom: '0',
                                textAlign: 'left',
                            }}
                            controlId="formBasicCheckbox-1">
                            <Form.Check
                                checked={acceptTerms}
                                onChange={(e) =>
                                    setAcceptTerms(e.target.checked)
                                }
                                type="checkbox"
                                label={constants.TERMS_AND_CONDITIONS()}
                            />
                        </Form.Group>
                        <br />
                        <SubmitButton
                            buttonText={constants.SUBMIT}
                            loading={loading}
                            disabled={!acceptTerms}
                        />
                        <br />
                        <Button block variant="link" onClick={props.login}>
                            {constants.ACCOUNT_EXISTS}
                        </Button>
                    </Form>
                )}
            </Formik>
        </>
    );
}