import { Injectable, Inject, Logger, HttpService } from '@nestjs/common';
import jwt from 'jsonwebtoken';
import { ZOOM_OPTIONS } from './constants';
import { ZoomOptions } from './interfaces';
import { IZoomCommand } from './interfaces/command.interface';
/**
* Sample interface for ZoomService
*
* Customize this as needed to describe the ZoomService
*
*/
interface IZoomService {}
@Injectable()
export class ZoomService implements IZoomService {
private readonly logger: Logger;
constructor(@Inject(ZOOM_OPTIONS) private _ZoomOptions: ZoomOptions, private httpService: HttpService) {
this.logger = new Logger('ZoomService');
this.logger.log(`Options: ${JSON.stringify(this._ZoomOptions)}`);
}
/**
* Send a command to the Zoom API
* @param command Command instance to send
* @returns API Data
*/
async send<T>(command: IZoomCommand) {
const token = await this.generateToken();
return this.httpService
.request<T>({
url: this.getURL(command),
headers: {
authorization: `Bearer ${token}`,
},
method: command.method,
data: command.body,
})
.toPromise();
}
/**
* Generate a new API token used to access the Zoom API
* @param expiry Expiration time in `ms` format - default `5s`
* @returns JWT token
*/
private async generateToken(expiry = '5s') {
return jwt.sign({}, this._ZoomOptions.auth.secret, {
expiresIn: expiry,
issuer: this._ZoomOptions.auth.key,
});
}
/**
* Generate the URL for a command request
* @param command Command instancce
* @returns URI encoded string
*/
private getURL(command: IZoomCommand) {
return encodeURI(`https://api.zoom.us/v2/${command.path}${this.getQueryParams(command)}`);
}
/**
* Generate a query parameter string
* @param command Command instance
* @returns Parameters string
*/
private getQueryParams(command: IZoomCommand) {
if (!command.queryParameters || command.queryParameters.length === 0) return '';
return '&' + command.queryParameters?.map((param) => `${param.name}=${param.value}`).join('&');
}
}
