import {isOAuth2RedemptionCode, OAuth2Client, OAuth2RedemptionCode, RedemptionCodeRepository} from '../types'
import {Inject, Injectable} from '../../../di'
import {Cache, Maybe, uuid4} from '../../../util'
import {Authenticatable} from '../../types'

@Injectable()
export class CacheRedemptionCodeRepository extends RedemptionCodeRepository {
    @Inject()
    protected readonly cache!: Cache

    async find(codeString: string): Promise<Maybe<OAuth2RedemptionCode>> {
        const cacheKey = `@extollo:oauth2:redemption:${codeString}`
        if ( await this.cache.has(cacheKey) ) {
            const code = await this.cache.safe(cacheKey).then(x => x.json())
            if ( isOAuth2RedemptionCode(code) ) {
                return code
            }
        }
    }

    async issue(user: Authenticatable, client: OAuth2Client, scope?: string): Promise<OAuth2RedemptionCode> {
        const code = {
            scope,
            clientId: client.id,
            userId: user.getUniqueIdentifier(),
            code: uuid4(),
        }

        const cacheKey = `@extollo:oauth2:redemption:${code.code}`
        await this.cache.put(cacheKey, JSON.stringify(code))
        return code
    }
}