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/*
 * This file is part of ETL-Processor
 *
 * Copyright (c) 2023       Comprehensive Cancer Center Mainfranken
 * Copyright (c) 2024-2026  Paul-Christian Volkmer, Datenintegrationszentrum Philipps-Universität Marburg and Contributors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package dev.dnpm.etl.processor.security

import java.util.*
import java.util.function.Consumer
import org.assertj.core.api.Assertions.assertThat
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.ExtendWith
import org.mockito.ArgumentMatchers.anyLong
import org.mockito.ArgumentMatchers.anyString
import org.mockito.Mock
import org.mockito.junit.jupiter.MockitoExtension
import org.mockito.kotlin.*
import org.springframework.security.crypto.password.PasswordEncoder
import org.springframework.security.provisioning.InMemoryUserDetailsManager

@ExtendWith(MockitoExtension::class)
class TokenServiceTest {

  private lateinit var userDetailsManager: InMemoryUserDetailsManager
  private lateinit var passwordEncoder: PasswordEncoder
  private lateinit var tokenRepository: TokenRepository

  private lateinit var tokenService: TokenService

  @BeforeEach
  fun setup(
      @Mock userDetailsManager: InMemoryUserDetailsManager,
      @Mock passwordEncoder: PasswordEncoder,
      @Mock tokenRepository: TokenRepository,
  ) {
    this.userDetailsManager = userDetailsManager
    this.passwordEncoder = passwordEncoder
    this.tokenRepository = tokenRepository

    this.tokenService = TokenService(userDetailsManager, passwordEncoder, tokenRepository)
  }

  @Test
  fun shouldEncodePasswordForNewToken() {
    doAnswer { "{test}verysecret" }.whenever(passwordEncoder).encode(anyString())

    val actual = this.tokenService.addToken("Test Token")

    assertThat(actual)
        .satisfies(
            Consumer { assertThat(it.isSuccess).isTrue() },
            Consumer { assertThat(it.getOrNull()).matches("testtoken:[A-Za-z0-9]{48}$") },
        )
  }

  @Test
  fun shouldContainAlphanumTokenUserPart() {
    doAnswer { "{test}verysecret" }.whenever(passwordEncoder).encode(anyString())

    val actual = this.tokenService.addToken("Test Token")

    assertThat(actual)
        .satisfies(
            Consumer { assertThat(it.isSuccess).isTrue() },
            Consumer { assertThat(it.getOrDefault("")).startsWith("testtoken:") },
        )
  }

  @Test
  fun shouldNotAllowSameTokenUserPartTwice() {
    doReturn(true).whenever(userDetailsManager).userExists(anyString())

    val actual = this.tokenService.addToken("Test Token")

    assertThat(actual).satisfies(Consumer { assertThat(it.isFailure).isTrue() })
    verify(tokenRepository, never()).save(any())
  }

  @Test
  fun shouldSaveNewToken() {
    doAnswer { "{test}verysecret" }.whenever(passwordEncoder).encode(anyString())

    val actual = this.tokenService.addToken("Test Token")

    val captor = argumentCaptor<Token>()
    verify(tokenRepository, times(1)).save(captor.capture())

    assertThat(actual).satisfies(Consumer { assertThat(it.isSuccess).isTrue() })
    assertThat(captor.firstValue)
        .satisfies(
            Consumer { assertThat(it.name).isEqualTo("Test Token") },
            Consumer { assertThat(it.username).isEqualTo("testtoken") },
            Consumer { assertThat(it.password).isEqualTo("{test}verysecret") },
        )
  }

  @Test
  fun shouldDeleteExistingToken() {
    doAnswer {
          val id = it.arguments[0] as Long
          Optional.of(Token(id, "Test Token", "testtoken", "{test}hsdajfgadskjhfgsdkfjg"))
        }
        .whenever(tokenRepository)
        .findById(anyLong())

    this.tokenService.deleteToken(42)

    val stringCaptor = argumentCaptor<String>()
    verify(userDetailsManager, times(1)).deleteUser(stringCaptor.capture())
    assertThat(stringCaptor.firstValue).isEqualTo("testtoken")

    val tokenCaptor = argumentCaptor<Token>()
    verify(tokenRepository, times(1)).delete(tokenCaptor.capture())
    assertThat(tokenCaptor.firstValue.id).isEqualTo(42)
  }

  @Test
  fun shouldReturnAllTokensFromRepository() {
    val expected =
        listOf(
            Token(1, "Test Token 1", "testtoken1", "{test}hsdajfgadskjhfgsdkfjg"),
            Token(2, "Test Token 2", "testtoken2", "{test}asdasdasdasdasdasdasd"),
        )

    doReturn(expected).whenever(tokenRepository).findAll()

    assertThat(tokenService.findAll()).isEqualTo(expected)
  }

  @Test
  fun shouldAddAllTokensFromRepositoryToUserDataManager() {
    val expected =
        listOf(
            Token(1, "Test Token 1", "testtoken1", "{test}hsdajfgadskjhfgsdkfjg"),
            Token(2, "Test Token 2", "testtoken2", "{test}asdasdasdasdasdasdasd"),
        )

    doReturn(expected).whenever(tokenRepository).findAll()

    tokenService.setup()

    verify(userDetailsManager, times(expected.size)).createUser(any())
  }
}