import Controller from "wms-core/Controller";
import {RequireAuthMiddleware} from "wms-core/auth/AuthComponent";
import {Request, Response} from "express";
import {ADD_RECOVERY_EMAIL_MAIL_TEMPLATE} from "../Mails";
import Validator, {EMAIL_REGEX, InvalidFormatValidationError, ValidationBag} from "wms-core/db/Validator";
import MagicLinkController from "./MagicLinkController";
import {MagicLinkActionType} from "./MagicLinkActionType";
import UserEmail from "wms-core/auth/models/UserEmail";
import {BadRequestError, ForbiddenHttpError, NotFoundHttpError, ServerError} from "wms-core/HttpError";
import MailDomain from "../models/MailDomain";
import UserMailIdentityComponent from "../models/UserMailIdentityComponent";
import MailIdentity from "../models/MailIdentity";
import UserNameComponent from "../models/UserNameComponent";
import {WhereOperator, WhereTest} from "wms-core/db/ModelQuery";

export default class AccountController extends Controller {
    public getRoutesPrefix(): string {
        return '/account';
    }

    public routes(): void {
        this.get('/', this.getAccount, 'account', RequireAuthMiddleware);
        this.post('/add-recovery-email', this.addRecoveryEmail, 'add-recovery-email', RequireAuthMiddleware);
        this.post('/set-main-email', this.postSetMainRecoveryEmail, 'set-main-recovery-email', RequireAuthMiddleware);
        this.post('/remove-email', this.postRemoveRecoveryEmail, 'remove-recovery-email', RequireAuthMiddleware);

        this.post('/create-mail-identity', this.postCreateMailIdentity, 'create-mail-identity', RequireAuthMiddleware);
        this.post('/delete-mail-identity', this.postDeleteMailIdentity, 'delete-mail-identity', RequireAuthMiddleware);
    }

    protected async getAccount(req: Request, res: Response): Promise<void> {
        const user = req.as(RequireAuthMiddleware).getUser();
        const userMailIdentity = user.as(UserMailIdentityComponent);

        res.render('account', {
            emails: await user.emails.get(),
            mailboxIdentity: await (await userMailIdentity.mainMailIdentity.get())?.toEmail(),
            identities: await Promise.all((await userMailIdentity.mailIdentities.get()).map(async identity => ({
                id: identity.id,
                email: await identity.toEmail(),
            }))),
            domains: (await MailDomain.select()
                .where('user_id', user.id)
                .where('user_id', null, WhereTest.EQ, WhereOperator.OR)
                .sortBy('user_id', 'DESC')
                .get())
                .map(d => ({
                    value: d.id,
                    display: d.name,
                })),
        });
    }

    protected async addRecoveryEmail(req: Request, res: Response): Promise<void> {
        await this.validate({
            email: new Validator().defined().regexp(EMAIL_REGEX),
        }, req.body);

        const email = req.body.email;

        // Existing email
        if (await UserEmail.select().where('email', email).first()) {
            const bag = new ValidationBag();
            const error = new InvalidFormatValidationError('You already have this email.');
            error.thingName = 'email';
            bag.addMessage(error);
            throw bag;
        }

        if (!req.sessionID) throw new ServerError('Session not initialized.');

        await MagicLinkController.sendMagicLink(
            req.sessionID,
            MagicLinkActionType.ADD_RECOVERY_EMAIL,
            Controller.route('account'),
            email,
            ADD_RECOVERY_EMAIL_MAIL_TEMPLATE,
            {},
        );

        res.redirect(Controller.route('magic_link_lobby', undefined, {
            redirect_uri: Controller.route('account'),
        }));
    }

    protected async postSetMainRecoveryEmail(req: Request, res: Response): Promise<void> {
        if (!req.body.id)
            throw new BadRequestError('Missing id field', 'Check form parameters.', req.url);

        const user = req.as(RequireAuthMiddleware).getUser();

        const userEmail = await UserEmail.getById(req.body.id);
        if (!userEmail)
            throw new NotFoundHttpError('email', req.url);
        if (userEmail.user_id !== user.id)
            throw new ForbiddenHttpError('email', req.url);
        if (userEmail.id === user.main_email_id)
            throw new BadRequestError('This address is already your main address', 'Try refreshing the account page.', req.url);

        user.main_email_id = userEmail.id;
        await user.save();

        req.flash('success', 'This email was successfully set as your main address.');
        res.redirectBack();
    }

    protected async postRemoveRecoveryEmail(req: Request, res: Response): Promise<void> {
        if (!req.body.id)
            throw new BadRequestError('Missing id field', 'Check form parameters.', req.url);

        const user = req.as(RequireAuthMiddleware).getUser();

        const userEmail = await UserEmail.getById(req.body.id);
        if (!userEmail)
            throw new NotFoundHttpError('email', req.url);
        if (userEmail.user_id !== user.id)
            throw new ForbiddenHttpError('email', req.url);
        if (userEmail.id === user.main_email_id)
            throw new BadRequestError('Cannot remove main email address', 'Try refreshing the account page.', req.url);

        await userEmail.delete();

        req.flash('success', 'This email was successfully removed from your account.');
        res.redirectBack();
    }

    protected async postCreateMailIdentity(req: Request, res: Response): Promise<void> {
        const domain = await MailDomain.getById(req.body.mail_domain_id);
        if (!domain) throw new NotFoundHttpError('domain', req.url);

        const user = req.as(RequireAuthMiddleware).getUser();
        const mailIdentityComponent = user.as(UserMailIdentityComponent);

        const identity = MailIdentity.create({
            user_id: user.id,
            name: req.body.name,
            mail_domain_id: req.body.mail_domain_id,
        });

        // Check whether this identity can be created by this user
        if (domain.isPublic()) {
            await this.validate({
                name: new Validator<string>().defined().equals(user.as(UserNameComponent).name),
            }, req.body);
            const actualPublicAddressesCount = await mailIdentityComponent.getPublicAddressesCount();
            const maxPublicAddressesCount = mailIdentityComponent.getMaxPublicAddressesCount();
            if (actualPublicAddressesCount >= maxPublicAddressesCount) {
                req.flash('error', 'You have reached maximum public email addresses.');
                res.redirectBack();
                return;
            }
        } else {
            if (!domain.canCreateAddresses(user)) {
                throw new ForbiddenHttpError('domain', req.url);
            }
        }

        // Save identity
        await identity.save();

        // Set main mail identity if not already set
        if (!mailIdentityComponent.main_mail_identity_id) {
            mailIdentityComponent.main_mail_identity_id = identity.id;
            await user.save();
            req.flash('info', 'Congratulations! You just created your mailbox.');
        }

        req.flash('success', 'Mail identity ' + await identity.toEmail() + ' successfully created.');
        res.redirectBack();
    }

    protected async postDeleteMailIdentity(req: Request, res: Response): Promise<void> {
        const user = req.as(RequireAuthMiddleware).getUser();

        const identity = await MailIdentity.getById(req.body.id);
        if (!identity) throw new NotFoundHttpError('Mail identity', req.url);
        if (identity.user_id !== user.id) throw new ForbiddenHttpError('mail identity', req.url);
        if (user.as(UserMailIdentityComponent).main_mail_identity_id === identity.id) {
            req.flash('error', 'Cannot delete your mailbox identity.');
            res.redirectBack();
            return;
        }

        await identity.delete();
        req.flash('success', 'Identity ' + await identity.toEmail() + ' successfully deleted.');
        res.redirectBack();
    }
}