package be.simplenotes.domain.security

import be.simplenotes.domain.model.PersistedUser
import com.auth0.jwt.exceptions.JWTVerificationException

data class JwtPayload(val userId: Int, val username: String) {
    constructor(user: PersistedUser) : this(user.id, user.username)
}

class JwtPayloadExtractor(private val jwt: SimpleJwt) {
    operator fun invoke(token: String): JwtPayload? = try {
        val decodedJWT = jwt.verifier.verify(token)
        val id = decodedJWT.getClaim("id").asInt() ?: null
        val username = decodedJWT.getClaim("username").asString() ?: null
        id?.let { username?.let { JwtPayload(id, username) } }
    } catch (e: JWTVerificationException) {
        null
    } catch (e: IllegalArgumentException) {
        null
    }
}