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| 1 | +package com.runnect.runnect.data.service |
| 2 | + |
| 3 | +import android.content.Context |
| 4 | +import com.runnect.runnect.application.ApplicationClass |
| 5 | +import com.runnect.runnect.data.dto.response.ResponseGetRefreshToken |
| 6 | +import com.runnect.runnect.data.dto.response.base.BaseResponse |
| 7 | +import com.runnect.runnect.util.preference.AuthUtil.getAccessToken |
| 8 | +import com.runnect.runnect.util.preference.AuthUtil.getNewToken |
| 9 | +import com.runnect.runnect.util.preference.AuthUtil.saveToken |
| 10 | +import com.runnect.runnect.util.preference.StatusType.LoginStatus |
| 11 | +import dagger.hilt.android.qualifiers.ApplicationContext |
| 12 | +import kotlinx.serialization.decodeFromString |
| 13 | +import kotlinx.serialization.json.Json |
| 14 | +import okhttp3.Interceptor |
| 15 | +import okhttp3.Request |
| 16 | +import okhttp3.RequestBody.Companion.toRequestBody |
| 17 | +import okhttp3.Response |
| 18 | +import timber.log.Timber |
| 19 | +import javax.inject.Inject |
| 20 | + |
| 21 | +class AuthInterceptor @Inject constructor( |
| 22 | + @ApplicationContext private val context: Context, |
| 23 | + private val json: Json |
| 24 | +) : Interceptor { |
| 25 | + // access Header 에 보내고 이때 401(토큰 만료) 뜨면 액세스 재발급 요청 |
| 26 | + // 재발급 성공 : 저장 |
| 27 | + // 재발급 실패 : 재 로그인 토스트 메시지 띄우고 preference 빈 값 넣고 로그인 화면 이동 |
| 28 | + override fun intercept(chain: Interceptor.Chain): Response { |
| 29 | + val originalRequest = chain.request() |
| 30 | + |
| 31 | + val headerRequest = originalRequest.newAuthTokenBuilder() |
| 32 | + .build() |
| 33 | + |
| 34 | + val response = headerRequest.let { chain.proceed(it) } |
| 35 | + |
| 36 | + return if (response.code == CODE_TOKEN_EXPIRED) { |
| 37 | + try { |
| 38 | + Timber.e("Access Token Expired: getNewAccessToken") |
| 39 | + response.close() |
| 40 | + handleTokenExpired(chain, originalRequest, headerRequest) |
| 41 | + } catch (t: Throwable) { |
| 42 | + Timber.e("Exception: ${t.message}") |
| 43 | + context.saveToken( |
| 44 | + accessToken = LoginStatus.EXPIRED.value, |
| 45 | + refreshToken = LoginStatus.EXPIRED.value |
| 46 | + ) |
| 47 | + response |
| 48 | + } |
| 49 | + } else { |
| 50 | + response |
| 51 | + } |
| 52 | + } |
| 53 | + |
| 54 | + private fun Request.newAuthTokenBuilder(): Request.Builder { |
| 55 | + val accessToken = context.getAccessToken() |
| 56 | + val refreshToken = context.getNewToken() |
| 57 | + return newBuilder().apply { |
| 58 | + addHeader(ACCESS_TOKEN, accessToken) |
| 59 | + addHeader(REFRESH_TOKEN, refreshToken) |
| 60 | + } |
| 61 | + } |
| 62 | + |
| 63 | + |
| 64 | + private fun handleTokenExpired( |
| 65 | + chain: Interceptor.Chain, |
| 66 | + originalRequest: Request, |
| 67 | + headerRequest: Request |
| 68 | + ): Response { |
| 69 | + val refreshTokenResponse = getNewToken(originalRequest, chain) |
| 70 | + return if (refreshTokenResponse.isSuccessful) { |
| 71 | + handleGetRefreshTokenSuccess(refreshTokenResponse, originalRequest, chain) |
| 72 | + } else { |
| 73 | + handleGetNewTokenFailure(refreshTokenResponse, headerRequest, chain) |
| 74 | + } |
| 75 | + } |
| 76 | + |
| 77 | + private fun getNewToken(originalRequest: Request, chain: Interceptor.Chain): Response { |
| 78 | + val baseUrl = ApplicationClass.getBaseUrl() |
| 79 | + val refreshToken = context.getNewToken() |
| 80 | + val refreshTokenRequest = originalRequest.newBuilder().post("".toRequestBody()) |
| 81 | + .url("$baseUrl/api/auth/getNewToken") |
| 82 | + .addHeader(REFRESH_TOKEN, refreshToken) |
| 83 | + .build() |
| 84 | + |
| 85 | + return chain.proceed(refreshTokenRequest) |
| 86 | + } |
| 87 | + |
| 88 | + private fun handleGetRefreshTokenSuccess( |
| 89 | + refreshTokenResponse: Response, |
| 90 | + originalRequest: Request, |
| 91 | + chain: Interceptor.Chain |
| 92 | + ): Response { |
| 93 | + refreshTokenResponse.use { response -> |
| 94 | + val responseToken = json.decodeFromString<BaseResponse<ResponseGetRefreshToken>>( |
| 95 | + response.body?.string().orEmpty() |
| 96 | + ) |
| 97 | + responseToken.data?.data?.let { |
| 98 | + Timber.e("New Refresh Token Success: ${it.refreshToken}") |
| 99 | + context.saveToken(it.accessToken, it.refreshToken) |
| 100 | + } |
| 101 | + } |
| 102 | + |
| 103 | + val newRequest = originalRequest.newAuthTokenBuilder().build() |
| 104 | + return chain.proceed(newRequest) |
| 105 | + } |
| 106 | + |
| 107 | + private fun handleGetNewTokenFailure( |
| 108 | + refreshTokenResponse: Response, |
| 109 | + headerRequest: Request, |
| 110 | + chain: Interceptor.Chain |
| 111 | + ): Response { |
| 112 | + Timber.e("New Refresh Token Failure: ${refreshTokenResponse.code}") |
| 113 | + context.saveToken( |
| 114 | + accessToken = LoginStatus.EXPIRED.value, |
| 115 | + refreshToken = LoginStatus.EXPIRED.value |
| 116 | + ) |
| 117 | + return chain.proceed(headerRequest) |
| 118 | + } |
| 119 | + |
| 120 | + |
| 121 | + companion object { |
| 122 | + private const val ACCESS_TOKEN = "accessToken" |
| 123 | + private const val CODE_TOKEN_EXPIRED = 401 |
| 124 | + private const val REFRESH_TOKEN = "refreshToken" |
| 125 | + } |
| 126 | + |
| 127 | +} |
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