package space.luminic.budgerapp.services

import kotlinx.coroutines.reactor.awaitSingle
import org.springframework.cache.annotation.CacheEvict
import org.springframework.stereotype.Service
import reactor.core.publisher.Mono
import space.luminic.budgerapp.models.Token
import space.luminic.budgerapp.models.TokenStatus
import space.luminic.budgerapp.repos.TokenRepo
import java.time.LocalDateTime

@Service
class TokenService(private val tokenRepository: TokenRepo) {

    @CacheEvict("tokens", allEntries = true)
    suspend fun saveToken(token: String, username: String, expiresAt: LocalDateTime): Token {
        val newToken = Token(
            token = token,
            username = username,
            issuedAt = LocalDateTime.now(),
            expiresAt = expiresAt
        )
        return tokenRepository.save(newToken).awaitSingle()
    }

    fun getToken(token: String): Mono<Token> {
        return tokenRepository.findByToken(token)
    }


    fun revokeToken(token: String) {
        val tokenDetail =
            tokenRepository.findByToken(token).block()!!
        val updatedToken = tokenDetail.copy(status = TokenStatus.REVOKED)
        tokenRepository.save(updatedToken).block()
    }


    @CacheEvict("tokens", allEntries = true)
    fun deleteExpiredTokens() {
        tokenRepository.deleteByExpiresAtBefore(LocalDateTime.now())
    }
}