import * as AWS from 'aws-sdk';
import {IResponse, response} from './tools';

AWS.config.update({region: 'us-east-1'}); // Virginia

const SES = new AWS.SES(); //{apiVersion: '2010-12-01'}
const SNS = new AWS.SNS();

export interface INotify {
    htmlContent?: string;
    textContent: string;
    from?: string;
    replyTo?: Array<string>;
    emailAddresses?: Array<string>;
    subject: string;
    phoneNumber?: string;
    values: any; // values to parse
}

function parseValues(content: string, values: any): string {
    const keys = Object.keys(values);

    for(let i = 0; i < keys.length; i++) {
        const reg = new RegExp('{{' + keys[i] + '}}', 'g');
        content = content.toString().replace(reg, values[keys[i]]);
    }

    return content;
}

export class Notify {

    /**
     *
     * @param {INotify} body
     * @returns {Promise<>}
     */
    async sendEmail(body: INotify): Promise<IResponse> {

        // Create sendEmail params
        let params = {
            Destination: {
                CcAddresses: [],
                ToAddresses: body.emailAddresses
            },
            Message: {
                Body: {
                    Html: {
                        Charset: 'UTF-8',
                        Data: body.values ? parseValues(body.htmlContent, body.values) : body.htmlContent
                    },
                    Text: {
                        Charset: 'UTF-8',
                        Data: body.values ? parseValues(body.textContent, body.values) : body.textContent
                    }
                },
                Subject: {
                    Charset: 'UTF-8',
                    Data: body.values ? parseValues(body.subject, body.values) : body.subject
                }
            },
            Source: body.from,
            ReplyToAddresses: body.replyTo
        };

        try {
            const data = await SES.sendEmail(params).promise();
            params['messageId'] = data;

            return response(true, null, params);

        } catch (error) {
            console.log(60, error);
            return response(false, error.message);
        }
    }

    /**
     *
     * @param {INotify} body
     * @returns {Promise<>}
     */
    async sendSms(body: INotify): Promise<IResponse> {
        const params = {
            Message: body.values ? parseValues(body.textContent, body.values) : body.textContent,
            PhoneNumber: body.phoneNumber,
            Subject: body.values ? parseValues(body.subject, body.values) : body.subject
        };

        try {
            const data = await SNS.publish(params).promise();
            params['messageId'] = data;

            return response(true, null, params);
        } catch (error) {
            console.log(77, error);
            return response(false, error.message);
        }
    }
}