Fix Shikimori authToken refreshing

app/src/main/java/org/koitharu/kotatsu/scrobbling/shikimori/data/ShikimoriInterceptor.kt

@@ -10,10 +10,13 @@ private const val USER_AGENT_SHIKIMORI = "Kotatsu"
 class ShikimoriInterceptor(private val storage: ShikimoriStorage) : Interceptor {
 
 	override fun intercept(chain: Interceptor.Chain): Response {
-		val request = chain.request().newBuilder()
+		val sourceRequest = chain.request()
+		val request = sourceRequest.newBuilder()
 		request.header(CommonHeaders.USER_AGENT, USER_AGENT_SHIKIMORI)
-		storage.accessToken?.let {
+		if (!sourceRequest.url.pathSegments.contains("oauth")) {
-			request.header(CommonHeaders.AUTHORIZATION, "Bearer $it")
+			storage.accessToken?.let {
+				request.header(CommonHeaders.AUTHORIZATION, "Bearer $it")
+			}
 		}
 		val response = chain.proceed(request.build())
 		if (!response.isSuccessful && !response.isRedirect) {

app/src/main/java/org/koitharu/kotatsu/scrobbling/shikimori/data/ShikimoriRepository.kt

@@ -40,13 +40,14 @@ class ShikimoriRepository(
 
 	suspend fun authorize(code: String?) {
 		val body = FormBody.Builder()
-		body.add("grant_type", "authorization_code")
 		body.add("client_id", BuildConfig.SHIKIMORI_CLIENT_ID)
 		body.add("client_secret", BuildConfig.SHIKIMORI_CLIENT_SECRET)
 		if (code != null) {
+			body.add("grant_type", "authorization_code")
 			body.add("redirect_uri", REDIRECT_URI)
 			body.add("code", code)
 		} else {
+			body.add("grant_type", "refresh_token")
 			body.add("refresh_token", checkNotNull(storage.refreshToken))
 		}
 		val request = Request.Builder()