import axios from 'axios';
import { config } from './config';
import { MailSendingError } from './errors/MailErrors';

/**
 * This class is responsible for all things mail sending.
 * This uses axios to communicate with the mailer api (https://git.odit.services/lfk/mailer).
 */
export class Mailer {
    public static base: string = config.mailer_url;
    public static key: string = config.mailer_key;
    public static testing: boolean = config.testing;

    /**
     * Function for sending a password reset mail.
     * @param to_address The address the mail will be sent to. Should always get pulled from a user object.
     * @param token The requested password reset token - will be combined with the app_url to generate a password reset link.
     */
    public static async sendResetMail(to_address: string, token: string, locale: string = "en") {
        try {
            await axios.request({
                method: 'POST',
                url: `${Mailer.base}/api/v1/email`,
                headers: {
                    authorization: `Bearer ${Mailer.key}`,
                    'content-type': 'application/json'
                },
                data: {
                    to: to_address,
                    templateName: 'password-reset',
                    language: locale,
                    data: { token: token }
                }
            });
        } catch (error) {
            if (Mailer.testing) { return true; }
            throw new MailSendingError();
        }
    }

    /**
     * Function for sending a runner selfservice welcome mail.
     * @param to_address The address the mail will be sent to. Should always get pulled from a runner object.
     * @param token The requested selfservice token - will be combined with the app_url to generate a selfservice profile link.
    */
    public static async sendSelfserviceWelcomeMail(to_address: string, runner_id: number, firstname: string, middlename: string, lastname: string, token: string, locale: string = "en") {
        try {
            await axios.request({
                method: 'POST',
                url: `${Mailer.base}/api/v1/email`,
                headers: {
                    authorization: `Bearer ${Mailer.key}`,
                    'content-type': 'application/json'
                },
                data: {
                    to: to_address,
                    templateName: 'welcome',
                    language: locale,
                    data: {
                        name: `${firstname} ${middlename} ${lastname}`,
                        barcode_content: `${runner_id}`,
                        link: `${process.env.SELFSERVICE_URL}/profile/${token}`
                    }
                }
            });
        } catch (error) {
            if (Mailer.testing) { return true; }
            throw new MailSendingError();
        }
    }

    /**
     * Function for sending a runner selfservice link forgotten mail.
     * @param to_address The address the mail will be sent to. Should always get pulled from a runner object.
     * @param token The requested selfservice token - will be combined with the app_url to generate a selfservice profile link.
    */
    public static async sendSelfserviceForgottenMail(to_address: string, runner_id: number, firstname: string, middlename: string, lastname: string, token: string, locale: string = "en") {
        try {
            await axios.request({
                method: 'POST',
                url: `${Mailer.base}/api/v1/email`,
                headers: {
                    authorization: `Bearer ${Mailer.key}`,
                    'content-type': 'application/json'
                },
                data: {
                    to: to_address,
                    templateName: 'welcome',
                    language: locale,
                    data: {
                        name: `${firstname} ${middlename} ${lastname}`,
                        barcode_content: `${runner_id}`,
                        link: `${process.env.SELFSERVICE_URL}/profile/${token}`
                    }
                }
            });
        } catch (error) {
            if (Mailer.testing) { return true; }
            throw new MailSendingError();
        }
    }
}