import Model from "wms-core/db/Model";
import AuthProof from "wms-core/auth/AuthProof";
import UserEmail from "wms-core/auth/models/UserEmail";
import User from "wms-core/auth/models/User";
import Validator from "wms-core/db/Validator";
import {cryptoRandomDictionary} from "wms-core/Utils";

export default class AuthToken extends Model implements AuthProof {
    protected readonly user_id!: number;
    protected readonly secret!: string;
    protected created_at?: Date;
    protected used_at?: Date;
    protected readonly ttl!: number;

    constructor(props: any) {
        super(props);

        if (!this.secret) {
            this.secret = cryptoRandomDictionary(64, 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_');
        }
    }


    protected init() {
        this.addProperty('user_id', new Validator().defined().exists(User, 'id'));
        this.addProperty('secret', new Validator().defined().between(32, 64));
        this.addProperty('created_at', new Validator());
        this.addProperty('used_at', new Validator());
        this.addProperty('ttl', new Validator().defined().min(1).max(5 * 365 * 24 * 3600)); // max 5 years
    }

    public use() {
        this.used_at = new Date();
    }

    public canDelete(user_id: number) {
        return this.user_id === user_id;
    }

    public getExpirationDate(): Date {
        if (!this.created_at) return new Date();

        return new Date(this.created_at.getTime() + this.ttl * 1000);
    }

    public async getEmail(): Promise<string> {
        let userEmail = await UserEmail.select().where('user_id', this.user_id).first();
        if (!userEmail) throw new Error("Cannot find main user email for user " + this.user_id);
        return userEmail.email;
    }

    public async getUser(): Promise<User | null> {
        return await User.getById<User>(this.user_id);
    }

    public async isAuthorized(): Promise<boolean> {
        return true;
    }

    public async isOwnedBy(userId: number): Promise<boolean> {
        return this.user_id === userId;
    }

    public async isValid(): Promise<boolean> {
        return new Date().getTime() < this.getExpirationDate().getTime();
    }

    public async revoke(session: Express.Session): Promise<void> {
        await this.delete();
    }
}