import { Injectable, OnModuleInit, Inject, Optional } from '@nestjs/common';
import passport from 'passport';
import type { OAuthModuleOptions } from '../providers/oauth-provider.interface';
export const STRATEGY_NAME = 'oauth-provider';
@Injectable()
export class OAuthStrategyService implements OnModuleInit {
private strategyName: string;
constructor(
@Inject('OAUTH_MODULE_OPTIONS') private options: OAuthModuleOptions,
@Optional() @Inject('OAUTH_MODULE_ID') private authModuleId?: string,
) {
// Use instance-specific strategy name if authModuleId is provided
this.strategyName = authModuleId
? `${STRATEGY_NAME}-${authModuleId}`
: STRATEGY_NAME;
}
onModuleInit() {
this.registerStrategy();
}
private registerStrategy() {
const provider = this.options.provider;
// Use client credentials from resolved options
const clientId = this.options.clientId;
const clientSecret = this.options.clientSecret;
// Use resolved serverUrl (no fallbacks needed)
const serverUrl = this.options.serverUrl;
const strategyOptions = provider.strategyOptions({
serverUrl,
clientId,
clientSecret,
callbackPath: this.options.endpoints.callback,
});
const strategy = new provider.strategy(
strategyOptions,
(accessToken: string, refreshToken: string, profile: any, done: any) => {
try {
const mappedProfile = provider.profileMapper(profile);
return done(null, {
profile: mappedProfile,
accessToken,
provider: provider.name,
});
} catch (error) {
return done(error, null);
}
},
);
passport.use(this.strategyName, strategy);
}
getStrategyName(): string {
return this.strategyName;
}
}
